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Overview
Comment: | 1.0.55.0 |
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Downloads: | Tarball | ZIP archive | SQL archive |
Timelines: | family | ancestors | descendants | both | sourceforge |
Files: | files | file ages | folders |
SHA1: |
24425920c86f90fa36074d5f3dc0d302 |
User & Date: | rmsimpson 2008-08-06 21:40:17 |
Context
2008-08-06
| ||
21:48 | 3.6.1 debug sources check-in: add0673a62 user: rmsimpson tags: sourceforge | |
21:40 | 1.0.55.0 check-in: 24425920c8 user: rmsimpson tags: sourceforge | |
2008-07-26
| ||
04:34 | 1.0.54.0 check-in: 41d8f0f895 user: rmsimpson tags: sourceforge | |
Changes
Changes to SQLite.Interop/SQLite.Interop.rc.
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///////////////////////////////////////////////////////////////////////////// // // Version // VS_VERSION_INFO VERSIONINFO FILEVERSION 1,0,54,0 PRODUCTVERSION 1,0,0,0 FILEFLAGSMASK 0x17L #ifdef _DEBUG FILEFLAGS 0x1L #else FILEFLAGS 0x0L #endif ................................................................................ BEGIN BLOCK "StringFileInfo" BEGIN BLOCK "040904b0" BEGIN VALUE "Comments", "http://sqlite.phxsoftware.com" VALUE "FileDescription", "System.Data.SQLite Interop Library" VALUE "FileVersion", "1.0.54.0" VALUE "InternalName", "SQLite.Interop.DLL" VALUE "LegalCopyright", "Released to the public domain" VALUE "OriginalFilename", "SQLite3.DLL 3.6.0" VALUE "ProductName", "System.Data.SQLite" VALUE "ProductVersion", "1.0" END END BLOCK "VarFileInfo" BEGIN VALUE "Translation", 0x409, 1200 |
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///////////////////////////////////////////////////////////////////////////// // // Version // VS_VERSION_INFO VERSIONINFO FILEVERSION 1,0,55,0 PRODUCTVERSION 1,0,0,0 FILEFLAGSMASK 0x17L #ifdef _DEBUG FILEFLAGS 0x1L #else FILEFLAGS 0x0L #endif ................................................................................ BEGIN BLOCK "StringFileInfo" BEGIN BLOCK "040904b0" BEGIN VALUE "Comments", "http://sqlite.phxsoftware.com" VALUE "FileDescription", "System.Data.SQLite Interop Library" VALUE "FileVersion", "1.0.55.0" VALUE "InternalName", "SQLite.Interop.DLL" VALUE "LegalCopyright", "Released to the public domain" VALUE "OriginalFilename", "SQLite3.DLL 3.6.1" VALUE "ProductName", "System.Data.SQLite" VALUE "ProductVersion", "1.0" END END BLOCK "VarFileInfo" BEGIN VALUE "Translation", 0x409, 1200 |
Changes to SQLite.Interop/SQLite.Interop.vcproj.
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<Configuration Name="Release|Win32" OutputDirectory="$(ConfigurationName)" IntermediateDirectory="$(ConfigurationName)" ConfigurationType="2" CharacterSet="2" ManagedExtensions="0" WholeProgramOptimization="1" > <Tool Name="VCPreBuildEventTool" CommandLine="" /> <Tool Name="VCCustomBuildTool" ................................................................................ Name="VCMIDLTool" /> <Tool Name="VCCLCompilerTool" AdditionalOptions="/GS-" Optimization="2" FavorSizeOrSpeed="1" PreprocessorDefinitions="WIN32;NDEBUG;_WINDOWS;_USRDLL;_CRT_SECURE_NO_DEPRECATE;NO_TCL;THREADSAFE=1;SQLITE_HAS_CODEC;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_FTS3;SQLITE_OMIT_TRACE;SQLITE_ENABLE_RTREE" StringPooling="true" ExceptionHandling="0" /> <Tool Name="VCManagedResourceCompilerTool" /> <Tool ................................................................................ Name="VCMIDLTool" /> <Tool Name="VCCLCompilerTool" ExecutionBucket="7" Optimization="1" FavorSizeOrSpeed="2" PreprocessorDefinitions="_WIN32_WCE=$(CEVER);UNDER_CE=$(CEVER);WINCE;$(PLATFORMDEFINES);NDEBUG;_WINDOWS;_USRDLL;CPPSMART_EXPORTS;$(ARCHFAM);$(_ARCHFAM_);UNICODE;_UNICODE;SQLITE_HAS_CODEC;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_FTS3;SQLITE_OMIT_TRACE;SQLITE_ENABLE_RTREE" StringPooling="true" ExceptionHandling="0" BufferSecurityCheck="false" EnableFunctionLevelLinking="true" /> <Tool Name="VCManagedResourceCompilerTool" ................................................................................ TargetEnvironment="2" /> <Tool Name="VCCLCompilerTool" AdditionalOptions="/GS-" Optimization="2" FavorSizeOrSpeed="1" PreprocessorDefinitions="NDEBUG;_WINDOWS;_USRDLL;_CRT_SECURE_NO_DEPRECATE;NO_TCL;THREADSAFE=1;WIN64;SQLITE_HAS_CODEC;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_FTS3;SQLITE_OMIT_TRACE;SQLITE_ENABLE_RTREE" StringPooling="true" ExceptionHandling="0" BufferSecurityCheck="false" EnableFunctionLevelLinking="true" RuntimeTypeInfo="false" /> <Tool ................................................................................ TargetEnvironment="3" /> <Tool Name="VCCLCompilerTool" AdditionalOptions="/GS-" Optimization="2" FavorSizeOrSpeed="1" PreprocessorDefinitions="NDEBUG;_WINDOWS;_USRDLL;_CRT_SECURE_NO_DEPRECATE;NO_TCL;THREADSAFE=1;WIN64;SQLITE_HAS_CODEC;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_FTS3;SQLITE_OMIT_TRACE;SQLITE_ENABLE_RTREE" StringPooling="true" ExceptionHandling="0" BufferSecurityCheck="false" EnableFunctionLevelLinking="true" RuntimeTypeInfo="false" /> <Tool ................................................................................ <Tool Name="VCMIDLTool" /> <Tool Name="VCCLCompilerTool" AdditionalOptions="/GS-" Optimization="0" PreprocessorDefinitions="WIN32;_DEBUG;_WINDOWS;_USRDLL;_CRT_SECURE_NO_DEPRECATE;NO_TCL;THREADSAFE=1;SQLITE_HAS_CODEC;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_FTS3;SQLITE_OMIT_TRACE;SQLITE_ENABLE_RTREE" RuntimeLibrary="3" RuntimeTypeInfo="false" DebugInformationFormat="3" /> <Tool Name="VCManagedResourceCompilerTool" /> ................................................................................ TargetEnvironment="1" /> <Tool Name="VCCLCompilerTool" ExecutionBucket="7" AdditionalOptions="/GS-" Optimization="0" PreprocessorDefinitions="_WIN32_WCE=$(CEVER);UNDER_CE=$(CEVER);WINCE;$(PLATFORMDEFINES);_DEBUG;_WINDOWS;_USRDLL;CPPSMART_EXPORTS;$(ARCHFAM);$(_ARCHFAM_);UNICODE;_UNICODE;SQLITE_HAS_CODEC;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_FTS3;SQLITE_OMIT_TRACE;SQLITE_ENABLE_RTREE" DebugInformationFormat="3" /> <Tool Name="VCManagedResourceCompilerTool" /> <Tool Name="VCResourceCompilerTool" ................................................................................ Name="VCMIDLTool" TargetEnvironment="2" /> <Tool Name="VCCLCompilerTool" AdditionalOptions="/GS-" Optimization="0" PreprocessorDefinitions="_DEBUG;_WINDOWS;_USRDLL;_CRT_SECURE_NO_DEPRECATE;NO_TCL;THREADSAFE=1;WIN64;SQLITE_HAS_CODEC;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_FTS3;SQLITE_OMIT_TRACE;SQLITE_ENABLE_RTREE" RuntimeLibrary="3" RuntimeTypeInfo="false" DebugInformationFormat="3" /> <Tool Name="VCManagedResourceCompilerTool" /> ................................................................................ Name="VCMIDLTool" TargetEnvironment="3" /> <Tool Name="VCCLCompilerTool" AdditionalOptions="/GS-" Optimization="0" PreprocessorDefinitions="_DEBUG;_WINDOWS;_USRDLL;_CRT_SECURE_NO_DEPRECATE;NO_TCL;THREADSAFE=1;WIN64;SQLITE_HAS_CODEC;SQLITE_ENABLE_COLUMN_METADATA;SQLITE_ENABLE_FTS3;SQLITE_OMIT_TRACE;SQLITE_ENABLE_RTREE" RuntimeLibrary="3" RuntimeTypeInfo="false" DebugInformationFormat="3" /> <Tool Name="VCManagedResourceCompilerTool" /> ................................................................................ Name="Extras" > <File RelativePath=".\interop.c" > </File> </Filter> <File RelativePath=".\SQLite.Interop.rc" > </File> </Files> <Globals> </Globals> </VisualStudioProject> |
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(ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\mem2.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\mem3.c" > <FileConfiguration Name="Release|Win32" 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</FileConfiguration> </File> <File RelativePath=".\splitsource\mem5.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\mutex.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\mutex_w32.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\opcodes.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\os.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\os_win.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\pager.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Debug|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Debug|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Debug|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Debug|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\parse.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\pragma.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\prepare.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\printf.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\random.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\rtree.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\select.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\status.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\table.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\tokenize.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\trigger.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\update.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\utf.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\util.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\vacuum.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\vdbe.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\vdbeapi.c" > <FileConfiguration Name="Release|Win32" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Pocket PC 2003 (ARMV4)" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> <File RelativePath=".\splitsource\vdbeaux.c" > 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ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|Itanium" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> <FileConfiguration Name="Release|x64" ExcludedFromBuild="true" > <Tool Name="VCCLCompilerTool" /> </FileConfiguration> </File> </Filter> <File RelativePath=".\SQLite.Interop.rc" > </File> </Files> <Globals> </Globals> </VisualStudioProject> |
Changes to SQLite.Interop/crypt.c.
1 2 3 4 5 6 7 8 9 .. 51 52 53 54 55 56 57 58 59 60 61 62 63 64 .. 74 75 76 77 78 79 80 81 82 83 84 85 86 87 ... 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 ... 299 300 301 302 303 304 305 306 307 308 309 310 311 312 ... 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 |
#ifndef SQLITE_OMIT_DISKIO #ifdef SQLITE_HAS_CODEC #include <windows.h> #include <wincrypt.h> // Extra padding before and after the cryptographic buffer #define CRYPT_OFFSET 8 ................................................................................ static LPCRYPTBLOCK CreateCryptBlock(HCRYPTKEY hKey, Pager *pager, LPCRYPTBLOCK pExisting) { LPCRYPTBLOCK pBlock; if (!pExisting) // Creating a new cryptblock { pBlock = sqlite3_malloc(sizeof(CRYPTBLOCK)); ZeroMemory(pBlock, sizeof(CRYPTBLOCK)); pBlock->hReadKey = hKey; pBlock->hWriteKey = hKey; } else // Updating an existing cryptblock { pBlock = pExisting; ................................................................................ sqlite3_free(pBlock->pvCrypt); pBlock->pvCrypt = NULL; } // Figure out how big to make our spare crypt block CryptEncrypt(hKey, 0, TRUE, 0, NULL, &pBlock->dwCryptSize, pBlock->dwCryptSize * 2); pBlock->pvCrypt = sqlite3_malloc(pBlock->dwCryptSize + (CRYPT_OFFSET * 2)); return pBlock; } // Destroy a cryptographic context and any buffers and keys allocated therein static void DestroyCryptBlock(LPCRYPTBLOCK pBlock) { ................................................................................ LPCRYPTBLOCK pBlock = (LPCRYPTBLOCK)sqlite3pager_get_codecarg(p); if (ppKey) *ppKey = 0; if (pnKeyLen && pBlock) *pnKeyLen = 1; } // We do not attach this key to the temp store, only the main database. __declspec(dllexport) int WINAPI sqlite3_key_interop(sqlite3 *db, const void *pKey, int nKeySize) { return sqlite3CodecAttach(db, 0, pKey, nKeySize); } // Changes the encryption key for an existing database. __declspec(dllexport) int WINAPI sqlite3_rekey_interop(sqlite3 *db, const void *pKey, int nKeySize) { Btree *pbt = db->aDb[0].pBt; Pager *p = sqlite3BtreePager(pbt); LPCRYPTBLOCK pBlock = (LPCRYPTBLOCK)sqlite3pager_get_codecarg(p); HCRYPTKEY hKey = DeriveKey(pKey, nKeySize); int rc = SQLITE_ERROR; ................................................................................ if (!pBlock && !hKey) return SQLITE_OK; // Wasn't encrypted to begin with // To rekey a database, we change the writekey for the pager. The readkey remains // the same if (!pBlock) // Encrypt an unencrypted database { pBlock = CreateCryptBlock(hKey, p, NULL); pBlock->hReadKey = 0; // Original database is not encrypted sqlite3PagerSetCodec(sqlite3BtreePager(pbt), sqlite3Codec, pBlock); db->aDb[0].pAux = pBlock; db->aDb[0].xFreeAux = DestroyCryptBlock; } else // Change the writekey for an already-encrypted database { ................................................................................ db->aDb[0].xFreeAux = NULL; DestroyCryptBlock(pBlock); } return rc; } int sqlite3_key(sqlite3 *db, const void *pKey, int nKey) { return sqlite3_key_interop(db, pKey, nKey); } int sqlite3_rekey(sqlite3 *db, const void *pKey, int nKey) { return sqlite3_rekey_interop(db, pKey, nKey); } #endif // SQLITE_HAS_CODEC #endif // SQLITE_OMIT_DISKIO |
> > > > > > > > > > > | | > > > < < < < < < < < < < |
1 2 3 4 5 6 7 8 9 10 11 12 13 .. 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 .. 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 ... 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 ... 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 ... 394 395 396 397 398 399 400 401 402 403 |
#ifndef SQLITE_OMIT_DISKIO #ifdef SQLITE_HAS_CODEC #if _DEBUG #include "splitsource\pager.c" #endif #include <windows.h> #include <wincrypt.h> // Extra padding before and after the cryptographic buffer #define CRYPT_OFFSET 8 ................................................................................ static LPCRYPTBLOCK CreateCryptBlock(HCRYPTKEY hKey, Pager *pager, LPCRYPTBLOCK pExisting) { LPCRYPTBLOCK pBlock; if (!pExisting) // Creating a new cryptblock { pBlock = sqlite3_malloc(sizeof(CRYPTBLOCK)); if (!pBlock) return NULL; ZeroMemory(pBlock, sizeof(CRYPTBLOCK)); pBlock->hReadKey = hKey; pBlock->hWriteKey = hKey; } else // Updating an existing cryptblock { pBlock = pExisting; ................................................................................ sqlite3_free(pBlock->pvCrypt); pBlock->pvCrypt = NULL; } // Figure out how big to make our spare crypt block CryptEncrypt(hKey, 0, TRUE, 0, NULL, &pBlock->dwCryptSize, pBlock->dwCryptSize * 2); pBlock->pvCrypt = sqlite3_malloc(pBlock->dwCryptSize + (CRYPT_OFFSET * 2)); if (!pBlock->pvCrypt) { sqlite3_free(pBlock); return NULL; } return pBlock; } // Destroy a cryptographic context and any buffers and keys allocated therein static void DestroyCryptBlock(LPCRYPTBLOCK pBlock) { ................................................................................ LPCRYPTBLOCK pBlock = (LPCRYPTBLOCK)sqlite3pager_get_codecarg(p); if (ppKey) *ppKey = 0; if (pnKeyLen && pBlock) *pnKeyLen = 1; } // We do not attach this key to the temp store, only the main database. int sqlite3_key(sqlite3 *db, const void *pKey, int nKeySize) { return sqlite3CodecAttach(db, 0, pKey, nKeySize); } // Changes the encryption key for an existing database. int sqlite3_rekey(sqlite3 *db, const void *pKey, int nKeySize) { Btree *pbt = db->aDb[0].pBt; Pager *p = sqlite3BtreePager(pbt); LPCRYPTBLOCK pBlock = (LPCRYPTBLOCK)sqlite3pager_get_codecarg(p); HCRYPTKEY hKey = DeriveKey(pKey, nKeySize); int rc = SQLITE_ERROR; ................................................................................ if (!pBlock && !hKey) return SQLITE_OK; // Wasn't encrypted to begin with // To rekey a database, we change the writekey for the pager. The readkey remains // the same if (!pBlock) // Encrypt an unencrypted database { pBlock = CreateCryptBlock(hKey, p, NULL); if (!pBlock) return SQLITE_NOMEM; pBlock->hReadKey = 0; // Original database is not encrypted sqlite3PagerSetCodec(sqlite3BtreePager(pbt), sqlite3Codec, pBlock); db->aDb[0].pAux = pBlock; db->aDb[0].xFreeAux = DestroyCryptBlock; } else // Change the writekey for an already-encrypted database { ................................................................................ db->aDb[0].xFreeAux = NULL; DestroyCryptBlock(pBlock); } return rc; } #endif // SQLITE_HAS_CODEC #endif // SQLITE_OMIT_DISKIO |
Added SQLite.Interop/extension-functions.c.
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/* This library will provide common mathematical and string functions in SQL queries using the operating system math library. It includes the following functions: Math: acos, asin, atan, atn2, atan2, acosh, asinh, atanh, difference, degrees, radians, cos, sin, tan, cot, cosh, sinh, tanh, coth, exp, log, log10, power, sign, sqrt, square, ceil, floor, pi. String: replicate, charindex, leftstr, rightstr, ltrim, rtrim, trim, replace, reverse, proper, padl, padr, padc, strfilter. Aggregate: stdev, variance, mode, median, lower_quartile, upper_quartile. The string functions ltrim, rtrim, trim, replace are included in recent versions of SQLite and so by default do not build. Instructions: 1) Compile with Linux: gcc -fPIC -lm -shared extension-functions.c -o libsqlitefunctions.so Mac OS X: gcc -fno-common -dynamiclib extension-functions.c -o libsqlitefunctions.dylib (You may need to add flags -I /opt/local/include/ -L/opt/local/lib -lsqlite3 if your sqlite3 is installed from Mac ports, or -I /sw/include/ -L/sw/lib -lsqlite3 if installed with Fink.) 2) In your application, call sqlite3_enable_load_extension(db,1) to allow loading external libraries. Then load the library libsqlitefunctions using sqlite3_load_extension; the third argument should be 0. See http://www.sqlite.org/cvstrac/wiki?p=LoadableExtensions. 3) Use, for example: SELECT cos(radians(inclination)) FROM satsum WHERE satnum = 25544; Note: Loading extensions is by default prohibited as a security measure; see "Security Considerations" in http://www.sqlite.org/cvstrac/wiki?p=LoadableExtensions. If the sqlite3 program and library are built this way, you cannot use these functions from the program, you must write your own program using the sqlite3 API, and call sqlite3_enable_load_extension as described above. If the program is built so that loading extensions is permitted, the following will work: sqlite> SELECT load_extension('./libsqlitefunctions.so'); sqlite> select cos(radians(45)); 0.707106781186548 Alterations: The instructions are for Linux or Mac OS X; users of other OSes may need to modify this procedure. In particular, if your math library lacks one or more of the needed trig or log functions, comment out the appropriate HAVE_ #define at the top of file. If you do not wish to make a loadable module, comment out the define for COMPILE_SQLITE_EXTENSIONS_AS_LOADABLE_MODULE. If you are using a version of SQLite without the trim functions and replace, comment out the HAVE_TRIM #define. Liam Healy History: 2008-06-13 Change to instructions to indicate use of the math library and that program might work. 2007-10-01 Minor clarification to instructions. 2007-09-29 Compilation as loadable module is optional with COMPILE_SQLITE_EXTENSIONS_AS_LOADABLE_MODULE. 2007-09-28 Use sqlite3_extension_init and macros SQLITE_EXTENSION_INIT1, SQLITE_EXTENSION_INIT2, so that it works with sqlite3_load_extension. Thanks to Eric Higashino and Joe Wilson. New instructions for Mac compilation. 2007-09-17 With help from Joe Wilson and Nuno Luca, made use of external interfaces so that compilation is no longer dependent on SQLite source code. Merged source, header, and README into a single file. Added casts so that Mac will compile without warnings (unsigned and signed char). 2007-09-05 Included some definitions from sqlite 3.3.13 so that this will continue to work in newer versions of sqlite. Completed description of functions available. 2007-03-27 Revised description. 2007-03-23 Small cleanup and a bug fix on the code. This was mainly letting errno flag errors encountered in the math library and checking the result, rather than pre-checking. This fixes a bug in power that would cause an error if any non-positive number was raised to any power. 2007-02-07 posted by Mikey C to sqlite mailing list. Original code 2006 June 05 by relicoder. */ //#include "config.h" #include <windows.h> // #define COMPILE_SQLITE_EXTENSIONS_AS_LOADABLE_MODULE //#define HAVE_ACOSH 1 //#define HAVE_ASINH 1 //#define HAVE_ATANH 1 #define HAVE_SINH 1 #define HAVE_COSH 1 #define HAVE_TANH 1 #define HAVE_LOG10 1 //#define HAVE_ISBLANK 1 #define SQLITE_SOUNDEX 1 #define HAVE_TRIM 1 /* LMH 2007-03-25 if sqlite has trim functions */ #ifdef COMPILE_SQLITE_EXTENSIONS_AS_LOADABLE_MODULE #include "sqlite3ext.h" SQLITE_EXTENSION_INIT1 #else #include "src/sqlite3.h" #endif #include <ctype.h> /* relicoder */ #include <math.h> #include <string.h> #include <stdio.h> #ifndef _WIN32_WCE #include <errno.h> /* LMH 2007-03-25 */ #else int errno; #define strerror(x) "" #endif #include <stdlib.h> #include <assert.h> #ifndef _MAP_H_ #define _MAP_H_ //#include <stdint.h> typedef signed char int8_t; typedef unsigned char uint8_t; typedef signed int int16_t; typedef unsigned int uint16_t; typedef signed long int int32_t; typedef unsigned long int uint32_t; typedef signed long long int int64_t; typedef unsigned long long int uint64_t; /* ** Simple binary tree implementation to use in median, mode and quartile calculations ** Tree is not necessarily balanced. That would require something like red&black trees of AVL */ typedef int(*cmp_func)(const void *, const void *); typedef void(*map_iterator)(void*, int64_t, void*); typedef struct node{ struct node *l; struct node *r; void* data; int64_t count; } node; typedef struct map{ node *base; cmp_func cmp; short free; } map; /* ** creates a map given a comparison function */ map map_make(cmp_func cmp); /* ** inserts the element e into map m */ void map_insert(map *m, void *e); /* ** executes function iter over all elements in the map, in key increasing order */ void map_iterate(map *m, map_iterator iter, void* p); /* ** frees all memory used by a map */ void map_destroy(map *m); /* ** compares 2 integers ** to use with map_make */ int int_cmp(const void *a, const void *b); /* ** compares 2 doubles ** to use with map_make */ int double_cmp(const void *a, const void *b); #endif /* _MAP_H_ */ typedef uint8_t u8; //typedef uint16_t u16; typedef int64_t i64; static char *sqlite3StrDup( const char *z ) { char *res = sqlite3_malloc( strlen(z)+1 ); return strcpy( res, z ); } /* ** These are copied verbatim from fun.c so as to not have the names exported */ /* LMH from sqlite3 3.3.13 */ /* ** This table maps from the first byte of a UTF-8 character to the number ** of trailing bytes expected. A value '4' indicates that the table key ** is not a legal first byte for a UTF-8 character. */ static const u8 xtra_utf8_bytes[256] = { /* 0xxxxxxx */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 10wwwwww */ 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, /* 110yyyyy */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 1110zzzz */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* 11110yyy */ 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, }; /* ** This table maps from the number of trailing bytes in a UTF-8 character ** to an integer constant that is effectively calculated for each character ** read by a naive implementation of a UTF-8 character reader. The code ** in the READ_UTF8 macro explains things best. */ static const int xtra_utf8_bits[] = { 0, 12416, /* (0xC0 << 6) + (0x80) */ 925824, /* (0xE0 << 12) + (0x80 << 6) + (0x80) */ 63447168 /* (0xF0 << 18) + (0x80 << 12) + (0x80 << 6) + 0x80 */ }; /* ** If a UTF-8 character contains N bytes extra bytes (N bytes follow ** the initial byte so that the total character length is N+1) then ** masking the character with utf8_mask[N] must produce a non-zero ** result. Otherwise, we have an (illegal) overlong encoding. */ static const int utf_mask[] = { 0x00000000, 0xffffff80, 0xfffff800, 0xffff0000, }; /* LMH salvaged from sqlite3 3.3.13 source code src/utf.c */ #define OLD_READ_UTF8(zIn, c) { \ int xtra; \ c = *(zIn)++; \ xtra = xtra_utf8_bytes[c]; \ switch( xtra ){ \ case 4: c = (int)0xFFFD; break; \ case 3: c = (c<<6) + *(zIn)++; \ case 2: c = (c<<6) + *(zIn)++; \ case 1: c = (c<<6) + *(zIn)++; \ c -= xtra_utf8_bits[xtra]; \ if( (utf_mask[xtra]&c)==0 \ || (c&0xFFFFF800)==0xD800 \ || (c&0xFFFFFFFE)==0xFFFE ){ c = 0xFFFD; } \ } \ } static int sqlite3ReadUtf8(const unsigned char *z){ int c; OLD_READ_UTF8(z, c); return c; } #define SKIP_UTF8(zIn) { \ zIn += (xtra_utf8_bytes[*(u8 *)zIn] + 1); \ } /* ** X is a pointer to the first byte of a UTF-8 character. Increment ** X so that it points to the next character. This only works right ** if X points to a well-formed UTF-8 string. */ #define sqliteNextChar(X) while( (0xc0&*++(X))==0x80 ){} #define sqliteCharVal(X) sqlite3ReadUtf8(X) /* ** This is a macro that facilitates writting wrappers for math.h functions ** it creates code for a function to use in SQlite that gets one numeric input ** and returns a floating point value. ** ** Could have been implemented using pointers to functions but this way it's inline ** and thus more efficient. Lower * ranking though... ** ** Parameters: ** name: function name to de defined (eg: sinFunc) ** function: function defined in math.h to wrap (eg: sin) ** domain: boolean condition that CAN'T happen in terms of the input parameter rVal ** (eg: rval<0 for sqrt) */ /* LMH 2007-03-25 Changed to use errno and remove domain; no pre-checking for errors. */ #define GEN_MATH_WRAP_DOUBLE_1(name, function) \ static void name(sqlite3_context *context, int argc, sqlite3_value **argv){\ double rVal = 0.0, val;\ assert( argc==1 );\ switch( sqlite3_value_type(argv[0]) ){\ case SQLITE_NULL: {\ sqlite3_result_null(context);\ break;\ }\ default: {\ rVal = sqlite3_value_double(argv[0]);\ errno = 0;\ val = function(rVal);\ if (errno == 0) {\ sqlite3_result_double(context, val);\ } else {\ sqlite3_result_error(context, strerror(errno), errno);\ }\ break;\ }\ }\ }\ /* ** Example of GEN_MATH_WRAP_DOUBLE_1 usage ** this creates function sqrtFunc to wrap the math.h standard function sqrt(x)=x^0.5 */ GEN_MATH_WRAP_DOUBLE_1(sqrtFunc, sqrt) /* trignometric functions */ GEN_MATH_WRAP_DOUBLE_1(acosFunc, acos) GEN_MATH_WRAP_DOUBLE_1(asinFunc, asin) GEN_MATH_WRAP_DOUBLE_1(atanFunc, atan) /* ** Many of systems don't have inverse hyperbolic trig functions so this will emulate ** them on those systems in terms of log and sqrt (formulas are too trivial to demand ** written proof here) */ #ifndef HAVE_ACOSH static double acosh(double x){ return log(x + sqrt(x*x - 1.0)); } #endif GEN_MATH_WRAP_DOUBLE_1(acoshFunc, acosh) #ifndef HAVE_ASINH static double asinh(double x){ return log(x + sqrt(x*x + 1.0)); } #endif GEN_MATH_WRAP_DOUBLE_1(asinhFunc, asinh) #ifndef HAVE_ATANH static double atanh(double x){ return (1.0/2.0)*log((1+x)/(1-x)) ; } #endif GEN_MATH_WRAP_DOUBLE_1(atanhFunc, atanh) /* ** math.h doesn't require cot (cotangent) so it's defined here */ static double cot(double x){ return 1.0/tan(x); } GEN_MATH_WRAP_DOUBLE_1(sinFunc, sin) GEN_MATH_WRAP_DOUBLE_1(cosFunc, cos) GEN_MATH_WRAP_DOUBLE_1(tanFunc, tan) GEN_MATH_WRAP_DOUBLE_1(cotFunc, cot) static double coth(double x){ return 1.0/tanh(x); } /* ** Many systems don't have hyperbolic trigonometric functions so this will emulate ** them on those systems directly from the definition in terms of exp */ #ifndef HAVE_SINH static double sinh(double x){ return (exp(x)-exp(-x))/2.0; } #endif GEN_MATH_WRAP_DOUBLE_1(sinhFunc, sinh) #ifndef HAVE_COSH static double cosh(double x){ return (exp(x)+exp(-x))/2.0; } #endif GEN_MATH_WRAP_DOUBLE_1(coshFunc, cosh) #ifndef HAVE_TANH static double tanh(double x){ return sinh(x)/cosh(x); } #endif GEN_MATH_WRAP_DOUBLE_1(tanhFunc, tanh) GEN_MATH_WRAP_DOUBLE_1(cothFunc, coth) /* ** Some systems lack log in base 10. This will emulate it */ #ifndef HAVE_LOG10 static double log10(double x){ static double l10 = -1.0; if( l10<0.0 ){ l10 = log(10.0); } return log(x)/l10; } #endif GEN_MATH_WRAP_DOUBLE_1(logFunc, log) GEN_MATH_WRAP_DOUBLE_1(log10Func, log10) GEN_MATH_WRAP_DOUBLE_1(expFunc, exp) /* ** Fallback for systems where math.h doesn't define M_PI */ #undef M_PI #ifndef M_PI /* ** static double PI = acos(-1.0); ** #define M_PI (PI) */ #define M_PI 3.14159265358979323846 #endif /* Convert Degrees into Radians */ static double deg2rad(double x){ return x*M_PI/180.0; } /* Convert Radians into Degrees */ static double rad2deg(double x){ return 180.0*x/M_PI; } GEN_MATH_WRAP_DOUBLE_1(rad2degFunc, rad2deg) GEN_MATH_WRAP_DOUBLE_1(deg2radFunc, deg2rad) /* constant function that returns the value of PI=3.1415... */ static void piFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ sqlite3_result_double(context, M_PI); } /* ** Implements the sqrt function, it has the peculiarity of returning an integer when the ** the argument is an integer. ** Since SQLite isn't strongly typed (almost untyped actually) this is a bit pedantic */ static void squareFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ i64 iVal = 0; double rVal = 0.0; assert( argc==2 ); switch( sqlite3_value_type(argv[0]) ){ case SQLITE_INTEGER: { iVal = sqlite3_value_int64(argv[0]); sqlite3_result_int64(context, iVal*iVal); break; } case SQLITE_NULL: { sqlite3_result_null(context); break; } default: { rVal = sqlite3_value_double(argv[0]); sqlite3_result_double(context, rVal*rVal); break; } } } /* ** Wraps the pow math.h function ** When both the base and the exponent are integers the result should be integer ** (see sqrt just before this). Here the result is always double */ /* LMH 2007-03-25 Changed to use errno; no pre-checking for errors. Also removes but that was present in the pre-checking that called sqlite3_result_error on a non-positive first argument, which is not always an error. */ static void powerFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ double r1 = 0.0; double r2 = 0.0; double val; assert( argc==2 ); if( sqlite3_value_type(argv[0]) == SQLITE_NULL || sqlite3_value_type(argv[1]) == SQLITE_NULL ){ sqlite3_result_null(context); }else{ r1 = sqlite3_value_double(argv[0]); r2 = sqlite3_value_double(argv[1]); errno = 0; val = pow(r1,r2); if (errno == 0) { sqlite3_result_double(context, val); } else { sqlite3_result_error(context, strerror(errno), errno); } } } /* ** atan2 wrapper */ static void atn2Func(sqlite3_context *context, int argc, sqlite3_value **argv){ double r1 = 0.0; double r2 = 0.0; assert( argc==2 ); if( sqlite3_value_type(argv[0]) == SQLITE_NULL || sqlite3_value_type(argv[1]) == SQLITE_NULL ){ sqlite3_result_null(context); }else{ r1 = sqlite3_value_double(argv[0]); r2 = sqlite3_value_double(argv[1]); sqlite3_result_double(context, atan2(r1,r2)); } } /* ** Implementation of the sign() function ** return one of 3 possibilities +1,0 or -1 when the argument is respectively ** positive, 0 or negative. ** When the argument is NULL the result is also NULL (completly conventional) */ static void signFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ double rVal=0.0; i64 iVal=0; assert( argc==1 ); switch( sqlite3_value_type(argv[0]) ){ case SQLITE_INTEGER: { iVal = sqlite3_value_int64(argv[0]); iVal = ( iVal > 0) ? 1: ( iVal < 0 ) ? -1: 0; sqlite3_result_int64(context, iVal); break; } case SQLITE_NULL: { sqlite3_result_null(context); break; } default: { /* 2nd change below. Line for abs was: if( rVal<0 ) rVal = rVal * -1.0; */ rVal = sqlite3_value_double(argv[0]); rVal = ( rVal > 0) ? 1: ( rVal < 0 ) ? -1: 0; sqlite3_result_double(context, rVal); break; } } } /* ** smallest integer value not less than argument */ static void ceilFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ double rVal=0.0; i64 iVal=0; assert( argc==1 ); switch( sqlite3_value_type(argv[0]) ){ case SQLITE_INTEGER: { i64 iVal = sqlite3_value_int64(argv[0]); sqlite3_result_int64(context, iVal); break; } case SQLITE_NULL: { sqlite3_result_null(context); break; } default: { rVal = sqlite3_value_double(argv[0]); sqlite3_result_int64(context, (i64) ceil(rVal)); break; } } } /* ** largest integer value not greater than argument */ static void floorFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ double rVal=0.0; i64 iVal=0; assert( argc==1 ); switch( sqlite3_value_type(argv[0]) ){ case SQLITE_INTEGER: { i64 iVal = sqlite3_value_int64(argv[0]); sqlite3_result_int64(context, iVal); break; } case SQLITE_NULL: { sqlite3_result_null(context); break; } default: { rVal = sqlite3_value_double(argv[0]); sqlite3_result_int64(context, (i64) floor(rVal)); break; } } } /* ** Given a string (s) in the first argument and an integer (n) in the second returns the ** string that constains s contatenated n times */ static void replicateFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ unsigned char *z; /* input string */ unsigned char *zo; /* result string */ i64 iCount; /* times to repeat */ i64 nLen; /* length of the input string (no multibyte considerations) */ i64 nTLen; /* length of the result string (no multibyte considerations) */ i64 i=0; if( argc!=2 || SQLITE_NULL==sqlite3_value_type(argv[0]) ) return; iCount = sqlite3_value_int64(argv[1]); if( iCount<0 ){ sqlite3_result_error(context, "domain error", -1); }else{ nLen = sqlite3_value_bytes(argv[0]); nTLen = nLen*iCount; z=sqlite3_malloc(nTLen+1); zo=sqlite3_malloc(nLen+1); if (!z || !zo){ sqlite3_result_error_nomem(context); if (z) sqlite3_free(z); if (zo) sqlite3_free(zo); return; } strcpy((char*)zo, (char*)sqlite3_value_text(argv[0])); for(i=0; i<iCount; ++i){ strcpy((char*)(z+i*nLen), (char*)zo); } sqlite3_result_text(context, (char*)z, -1, SQLITE_TRANSIENT); sqlite3_free(z); sqlite3_free(zo); } } /* ** Some systems (win32 among others) don't have an isblank function, this will emulate it. ** This function is not UFT-8 safe since it only analyses a byte character. */ #ifndef HAVE_ISBLANK int isblank(char c){ return( ' '==c || '\t'==c ); } #endif static void properFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ const unsigned char *z; /* input string */ unsigned char *zo; /* output string */ unsigned char *zt; /* iterator */ char r; int c=1; assert( argc!=1); if( SQLITE_NULL==sqlite3_value_type(argv[0]) ){ sqlite3_result_null(context); return; } z = sqlite3_value_text(argv[0]); zo = (unsigned char *)sqlite3StrDup((char *) z); if (!zo) { sqlite3_result_error_nomem(context); return; } zt = zo; while( (r = *(z++))!=0 ){ if( isblank(r) ){ c=1; }else{ if( c==1 ){ r = toupper(r); }else{ r = tolower(r); } c=0; } *(zt++) = r; } *zt = '\0'; sqlite3_result_text(context, (char*)zo, -1, SQLITE_TRANSIENT); sqlite3_free(zo); } /* ** given an input string (s) and an integer (n) adds spaces at the begining of s ** until it has a length of n characters. ** When s has a length >=n it's a NOP ** padl(NULL) = NULL */ static void padlFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ i64 ilen; /* length to pad to */ i64 zl; /* length of the input string (UTF-8 chars) */ int i = 0; const char *zi; /* input string */ char *zo; /* output string */ char *zt; assert( argc==2 ); if( sqlite3_value_type(argv[0]) == SQLITE_NULL ){ sqlite3_result_null(context); }else{ zi = (char *)sqlite3_value_text(argv[0]); ilen = sqlite3_value_int64(argv[1]); /* check domain */ if(ilen<0){ sqlite3_result_error(context, "domain error", -1); return; } zl = sqlite3Utf8CharLen(zi, -1); if( zl>=ilen ){ /* string is longer than the requested pad length, return the same string (dup it) */ zo = sqlite3StrDup(zi); if (!zo){ sqlite3_result_error_nomem(context); return; } sqlite3_result_text(context, zo, -1, SQLITE_TRANSIENT); }else{ zo = sqlite3_malloc(strlen(zi)+ilen-zl+1); if (!zo){ sqlite3_result_error_nomem(context); return; } zt = zo; for(i=1; i+zl<=ilen; ++i){ *(zt++)=' '; } /* no need to take UTF-8 into consideration here */ strcpy(zt,zi); } sqlite3_result_text(context, zo, -1, SQLITE_TRANSIENT); sqlite3_free(zo); } } /* ** given an input string (s) and an integer (n) appends spaces at the end of s ** until it has a length of n characters. ** When s has a length >=n it's a NOP ** padl(NULL) = NULL */ static void padrFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ i64 ilen; /* length to pad to */ i64 zl; /* length of the input string (UTF-8 chars) */ i64 zll; /* length of the input string (bytes) */ int i = 0; const char *zi; /* input string */ char *zo; /* output string */ char *zt; assert( argc==2 ); if( sqlite3_value_type(argv[0]) == SQLITE_NULL ){ sqlite3_result_null(context); }else{ zi = (char *)sqlite3_value_text(argv[0]); ilen = sqlite3_value_int64(argv[1]); /* check domain */ if(ilen<0){ sqlite3_result_error(context, "domain error", -1); return; } zl = sqlite3Utf8CharLen(zi, -1); if( zl>=ilen ){ /* string is longer than the requested pad length, return the same string (dup it) */ zo = sqlite3StrDup(zi); if (!zo){ sqlite3_result_error_nomem(context); return; } sqlite3_result_text(context, zo, -1, SQLITE_TRANSIENT); }else{ zll = strlen(zi); zo = sqlite3_malloc(zll+ilen-zl+1); if (!zo){ sqlite3_result_error_nomem(context); return; } zt = strcpy(zo,zi)+zll; for(i=1; i+zl<=ilen; ++i){ *(zt++) = ' '; } *zt = '\0'; } sqlite3_result_text(context, zo, -1, SQLITE_TRANSIENT); sqlite3_free(zo); } } /* ** given an input string (s) and an integer (n) appends spaces at the end of s ** and adds spaces at the begining of s until it has a length of n characters. ** Tries to add has many characters at the left as at the right. ** When s has a length >=n it's a NOP ** padl(NULL) = NULL */ static void padcFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ i64 ilen; /* length to pad to */ i64 zl; /* length of the input string (UTF-8 chars) */ i64 zll; /* length of the input string (bytes) */ int i = 0; const char *zi; /* input string */ char *zo; /* output string */ char *zt; assert( argc==2 ); if( sqlite3_value_type(argv[0]) == SQLITE_NULL ){ sqlite3_result_null(context); }else{ zi = (char *)sqlite3_value_text(argv[0]); ilen = sqlite3_value_int64(argv[1]); /* check domain */ if(ilen<0){ sqlite3_result_error(context, "domain error", -1); return; } zl = sqlite3Utf8CharLen(zi, -1); if( zl>=ilen ){ /* string is longer than the requested pad length, return the same string (dup it) */ zo = sqlite3StrDup(zi); if (!zo){ sqlite3_result_error_nomem(context); return; } sqlite3_result_text(context, zo, -1, SQLITE_TRANSIENT); }else{ zll = strlen(zi); zo = sqlite3_malloc(zll+ilen-zl+1); if (!zo){ sqlite3_result_error_nomem(context); return; } zt = zo; for(i=1; 2*i+zl<=ilen; ++i){ *(zt++) = ' '; } strcpy(zt, zi); zt+=zll; for(; i+zl<=ilen; ++i){ *(zt++) = ' '; } *zt = '\0'; } sqlite3_result_text(context, zo, -1, SQLITE_TRANSIENT); sqlite3_free(zo); } } /* ** given 2 string (s1,s2) returns the string s1 with the characters NOT in s2 removed ** assumes strings are UTF-8 encoded */ static void strfilterFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ const char *zi1; /* first parameter string (searched string) */ const char *zi2; /* second parameter string (vcontains valid characters) */ const char *z1; const char *z21; const char *z22; char *zo; /* output string */ char *zot; int c1 = 0; int c2 = 0; assert( argc==2 ); if( sqlite3_value_type(argv[0]) == SQLITE_NULL || sqlite3_value_type(argv[1]) == SQLITE_NULL ){ sqlite3_result_null(context); }else{ zi1 = (char *)sqlite3_value_text(argv[0]); zi2 = (char *)sqlite3_value_text(argv[1]); /* ** maybe I could allocate less, but that would imply 2 passes, rather waste ** (possibly) some memory */ zo = sqlite3_malloc(strlen(zi1)+1); if (!zo){ sqlite3_result_error_nomem(context); return; } zot = zo; z1 = zi1; while( (c1=sqliteCharVal((unsigned char *)z1))!=0 ){ z21=zi2; while( (c2=sqliteCharVal((unsigned char *)z21))!=0 && c2!=c1 ){ sqliteNextChar(z21); } if( c2!=0){ z22=z21; sqliteNextChar(z22); strncpy(zot, z21, z22-z21); zot+=z22-z21; } sqliteNextChar(z1); } *zot = '\0'; sqlite3_result_text(context, zo, -1, SQLITE_TRANSIENT); sqlite3_free(zo); } } /* ** Given a string z1, retutns the (0 based) index of it's first occurence ** in z2 after the first s characters. ** Returns -1 when there isn't a match. ** updates p to point to the character where the match occured. ** This is an auxiliary function. */ static int _substr(const char* z1, const char* z2, int s, CollSeq *pColl, const char** p){ int c = 0; int rVal=-1; const char* zt1; const char* zt2; int c1,c2; if( '\0'==*z1 ){ return -1; } while( (sqliteCharVal((unsigned char *)z2) != 0) && (c++)<s){ sqliteNextChar(z2); } c = 0; while( (sqliteCharVal((unsigned char *)z2)) != 0 ){ zt1 = z1; zt2 = z2; do{ c1 = sqliteCharVal((unsigned char *)zt1); c2 = sqliteCharVal((unsigned char *)zt2); if (pColl->enc == SQLITE_UTF8){ if (pColl->xCmp(pColl->pUser, 1, zt1, 1, zt2) == 0) { c1 = c2; } else { c1 = (c1) ? 1 : 0; c2 = (c2) ? 2 : 0; } } // TODO: Maybe try and convert the chars to UTF16 and run them thru the collating sequence? sqliteNextChar(zt1); sqliteNextChar(zt2); }while( c1 == c2 && c1 != 0 && c2 != 0 ); if( c1 == 0 ){ rVal = c; break; } sqliteNextChar(z2); ++c; } if(p){ *p=z2; } return rVal >=0 ? rVal+s : rVal; } /* ** given 2 input strings (s1,s2) and an integer (n) searches from the nth character ** for the string s1. Returns the position where the match occured. ** Characters are counted from 1. ** 0 is returned when no match occurs. */ static void charindexFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ const u8 *z1; /* s1 string */ u8 *z2; /* s2 string */ int s=0; int rVal=0; CollSeq *pColl = context->pColl; assert( argc==3 ||argc==2); if( SQLITE_NULL==sqlite3_value_type(argv[0]) || SQLITE_NULL==sqlite3_value_type(argv[1])){ sqlite3_result_null(context); return; } z1 = sqlite3_value_text(argv[0]); if( z1==0 ) return; z2 = (u8*) sqlite3_value_text(argv[1]); if(argc==3){ s = sqlite3_value_int(argv[2])-1; if(s<0){ s=0; } }else{ s = 0; } rVal = _substr((char *)z1,(char *)z2,s,pColl,NULL); sqlite3_result_int(context, rVal+1); } /* ** given a string (s) and an integer (n) returns the n leftmost (UTF-8) characters ** if the string has a length<=n or is NULL this function is NOP */ static void leftFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ int c=0; int cc=0; int l=0; const unsigned char *z; /* input string */ const unsigned char *zt; unsigned char *rz; /* output string */ assert( argc==2); if( SQLITE_NULL==sqlite3_value_type(argv[0]) || SQLITE_NULL==sqlite3_value_type(argv[1])){ sqlite3_result_null(context); return; } z = sqlite3_value_text(argv[0]); l = sqlite3_value_int(argv[1]); zt = z; while( sqliteCharVal(zt) && c++<l) sqliteNextChar(zt); cc=zt-z; rz = sqlite3_malloc(zt-z+1); if (!rz){ sqlite3_result_error_nomem(context); return; } strncpy((char*) rz, (char*) z, zt-z); *(rz+cc) = '\0'; sqlite3_result_text(context, (char*)rz, -1, SQLITE_TRANSIENT); sqlite3_free(rz); } /* ** given a string (s) and an integer (n) returns the n rightmost (UTF-8) characters ** if the string has a length<=n or is NULL this function is NOP */ static void rightFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ int l=0; int c=0; int cc=0; const char *z; const char *zt; const char *ze; char *rz; assert( argc==2); if( SQLITE_NULL == sqlite3_value_type(argv[0]) || SQLITE_NULL == sqlite3_value_type(argv[1])){ sqlite3_result_null(context); return; } z = (char *)sqlite3_value_text(argv[0]); l = sqlite3_value_int(argv[1]); zt = z; while( sqliteCharVal((unsigned char *)zt)!=0){ sqliteNextChar(zt); ++c; } ze = zt; zt = z; cc=c-l; if(cc<0) cc=0; while( cc-- > 0 ){ sqliteNextChar(zt); } rz = sqlite3_malloc(ze-zt+1); if (!rz){ sqlite3_result_error_nomem(context); return; } strcpy((char*) rz, (char*) (zt)); sqlite3_result_text(context, (char*)rz, -1, SQLITE_TRANSIENT); sqlite3_free(rz); } #ifndef HAVE_TRIM /* ** removes the whitespaces at the begining of a string. */ const char* ltrim(const char* s){ while( *s==' ' ) ++s; return s; } /* ** removes the whitespaces at the end of a string. ** !mutates the input string! */ void rtrim(char* s){ char* ss = s+strlen(s)-1; while( ss>=s && *ss==' ' ) --ss; *(ss+1)='\0'; } /* ** Removes the whitespace at the begining of a string */ static void ltrimFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ const char *z; assert( argc==1); if( SQLITE_NULL==sqlite3_value_type(argv[0]) ){ sqlite3_result_null(context); return; } z = sqlite3_value_text(argv[0]); sqlite3_result_text(context, ltrim(z), -1, SQLITE_TRANSIENT); } /* ** Removes the whitespace at the end of a string */ static void rtrimFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ const char *z; char *rz; /* try not to change data in argv */ assert( argc==1); if( SQLITE_NULL==sqlite3_value_type(argv[0]) ){ sqlite3_result_null(context); return; } z = sqlite3_value_text(argv[0]); rz = sqlite3StrDup(z); rtrim(rz); sqlite3_result_text(context, rz, -1, SQLITE_TRANSIENT); sqlite3_free(rz); } /* ** Removes the whitespace at the begining and end of a string */ static void trimFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ const char *z; char *rz; /* try not to change data in argv */ assert( argc==1); if( SQLITE_NULL==sqlite3_value_type(argv[0]) ){ sqlite3_result_null(context); return; } z = sqlite3_value_text(argv[0]); rz = sqlite3StrDup(z); rtrim(rz); sqlite3_result_text(context, ltrim(rz), -1, SQLITE_TRANSIENT); sqlite3_free(rz); } #endif /* ** given a pointer to a string s1, the length of that string (l1), a new string (s2) ** and it's length (l2) appends s2 to s1. ** All lengths in bytes. ** This is just an auxiliary function */ // static void _append(char **s1, int l1, const char *s2, int l2){ // *s1 = realloc(*s1, (l1+l2+1)*sizeof(char)); // strncpy((*s1)+l1, s2, l2); // *(*(s1)+l1+l2) = '\0'; // } #ifndef HAVE_TRIM /* ** given strings s, s1 and s2 replaces occurrences of s1 in s by s2 */ static void replaceFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ const char *z1; /* string s (first parameter) */ const char *z2; /* string s1 (second parameter) string to look for */ const char *z3; /* string s2 (third parameter) string to replace occurrences of s1 with */ int lz1; int lz2; int lz3; int lzo=0; char *zo=0; int ret=0; const char *zt1; const char *zt2; assert( 3==argc ); if( SQLITE_NULL==sqlite3_value_type(argv[0]) ){ sqlite3_result_null(context); return; } z1 = sqlite3_value_text(argv[0]); z2 = sqlite3_value_text(argv[1]); z3 = sqlite3_value_text(argv[2]); /* handle possible null values */ if( 0==z2 ){ z2=""; } if( 0==z3 ){ z3=""; } lz1 = strlen(z1); lz2 = strlen(z2); lz3 = strlen(z3); #if 0 /* special case when z2 is empty (or null) nothing will be changed */ if( 0==lz2 ){ sqlite3_result_text(context, z1, -1, SQLITE_TRANSIENT); return; } #endif zt1=z1; zt2=z1; while(1){ ret=_substr(z2,zt1 , 0, &zt2); if( ret<0 ) break; _append(&zo, lzo, zt1, zt2-zt1); lzo+=zt2-zt1; _append(&zo, lzo, z3, lz3); lzo+=lz3; zt1=zt2+lz2; } _append(&zo, lzo, zt1, lz1-(zt1-z1)); sqlite3_result_text(context, zo, -1, SQLITE_TRANSIENT); sqlite3_free(zo); } #endif /* ** given a string returns the same string but with the characters in reverse order */ static void reverseFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ const char *z; const char *zt; char *rz; char *rzt; int l = 0; int i = 0; assert( 1==argc ); if( SQLITE_NULL==sqlite3_value_type(argv[0]) ){ sqlite3_result_null(context); return; } z = (char *)sqlite3_value_text(argv[0]); l = strlen(z); rz = sqlite3_malloc(l+1); if (!rz){ sqlite3_result_error_nomem(context); return; } rzt = rz+l; *(rzt--) = '\0'; zt=z; while( sqliteCharVal((unsigned char *)zt)!=0 ){ z=zt; sqliteNextChar(zt); for(i=1; zt-i>=z; ++i){ *(rzt--)=*(zt-i); } } sqlite3_result_text(context, rz, -1, SQLITE_TRANSIENT); sqlite3_free(rz); } /* ** An instance of the following structure holds the context of a ** stdev() or variance() aggregate computation. ** implementaion of http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance#Algorithm_II ** less prone to rounding errors */ typedef struct StdevCtx StdevCtx; struct StdevCtx { double rM; double rS; i64 cnt; /* number of elements */ }; /* ** An instance of the following structure holds the context of a ** mode() or median() aggregate computation. ** Depends on structures defined in map.c (see map & map) ** These aggregate functions only work for integers and floats although ** they could be made to work for strings. This is usually considered meaningless. ** Only usuall order (for median), no use of collation functions (would this even make sense?) */ typedef struct ModeCtx ModeCtx; struct ModeCtx { i64 riM; /* integer value found so far */ double rdM; /* double value found so far */ i64 cnt; /* number of elements so far */ double pcnt; /* number of elements smaller than a percentile */ i64 mcnt; /* maximum number of occurrences (for mode) */ i64 mn; /* number of occurrences (for mode and percentiles) */ i64 is_double; /* whether the computation is being done for doubles (>0) or integers (=0) */ map* m; /* map structure used for the computation */ int done; /* whether the answer has been found */ }; /* ** called for each value received during a calculation of stdev or variance */ static void varianceStep(sqlite3_context *context, int argc, sqlite3_value **argv){ StdevCtx *p; double delta; double x; assert( argc==1 ); p = sqlite3_aggregate_context(context, sizeof(*p)); /* only consider non-null values */ if( SQLITE_NULL != sqlite3_value_numeric_type(argv[0]) ){ p->cnt++; x = sqlite3_value_double(argv[0]); delta = (x-p->rM); p->rM += delta/p->cnt; p->rS += delta*(x-p->rM); } } /* ** called for each value received during a calculation of mode of median */ static void modeStep(sqlite3_context *context, int argc, sqlite3_value **argv){ ModeCtx *p; i64 xi=0; double xd=0.0; i64 *iptr; double *dptr; int type; assert( argc==1 ); type = sqlite3_value_numeric_type(argv[0]); if( type == SQLITE_NULL) return; p = sqlite3_aggregate_context(context, sizeof(*p)); if( 0==(p->m) ){ p->m = calloc(1, sizeof(map)); if( type==SQLITE_INTEGER ){ /* map will be used for integers */ *(p->m) = map_make(int_cmp); p->is_double = 0; }else{ p->is_double = 1; /* map will be used for doubles */ *(p->m) = map_make(double_cmp); } } ++(p->cnt); if( 0==p->is_double ){ xi = sqlite3_value_int64(argv[0]); iptr = (i64*)calloc(1,sizeof(i64)); *iptr = xi; map_insert(p->m, iptr); }else{ xd = sqlite3_value_double(argv[0]); dptr = (double*)calloc(1,sizeof(double)); *dptr = xd; map_insert(p->m, dptr); } } /* ** Auxiliary function that iterates all elements in a map and finds the mode ** (most frequent value) */ static void modeIterate(void* e, i64 c, void* pp){ i64 ei; double ed; ModeCtx *p = (ModeCtx*)pp; if( 0==p->is_double ){ ei = *(int*)(e); if( p->mcnt==c ){ ++p->mn; }else if( p->mcnt<c ){ p->riM = ei; p->mcnt = c; p->mn=1; } }else{ ed = *(double*)(e); if( p->mcnt==c ){ ++p->mn; }else if(p->mcnt<c){ p->rdM = ed; p->mcnt = c; p->mn=1; } } } /* ** Auxiliary function that iterates all elements in a map and finds the median ** (the value such that the number of elements smaller is equal the the number of ** elements larger) */ static void medianIterate(void* e, i64 c, void* pp){ i64 ei; double ed; double iL; double iR; int il; int ir; ModeCtx *p = (ModeCtx*)pp; if(p->done>0) return; iL = p->pcnt; iR = p->cnt - p->pcnt; il = p->mcnt + c; ir = p->cnt - p->mcnt; if( il >= iL ){ if( ir >= iR ){ ++p->mn; if( 0==p->is_double ){ ei = *(int*)(e); p->riM += ei; }else{ ed = *(double*)(e); p->rdM += ed; } }else{ p->done=1; } } p->mcnt+=c; } /* ** Returns the mode value */ static void modeFinalize(sqlite3_context *context){ ModeCtx *p; p = sqlite3_aggregate_context(context, 0); if( p && p->m ){ map_iterate(p->m, modeIterate, p); map_destroy(p->m); free(p->m); if( 1==p->mn ){ if( 0==p->is_double ) sqlite3_result_int64(context, p->riM); else sqlite3_result_double(context, p->rdM); } } } /* ** auxiliary function for percentiles */ static void _medianFinalize(sqlite3_context *context){ ModeCtx *p; p = (ModeCtx*) sqlite3_aggregate_context(context, 0); if( p && p->m ){ p->done=0; map_iterate(p->m, medianIterate, p); map_destroy(p->m); free(p->m); if( 0==p->is_double ) if( 1==p->mn ) sqlite3_result_int64(context, p->riM); else sqlite3_result_double(context, p->riM*1.0/p->mn); else sqlite3_result_double(context, p->rdM/p->mn); } } /* ** Returns the median value */ static void medianFinalize(sqlite3_context *context){ ModeCtx *p; p = (ModeCtx*) sqlite3_aggregate_context(context, 0); if( p!=0 ){ p->pcnt = (p->cnt)/2.0; _medianFinalize(context); } } /* ** Returns the lower_quartile value */ static void lower_quartileFinalize(sqlite3_context *context){ ModeCtx *p; p = (ModeCtx*) sqlite3_aggregate_context(context, 0); if( p!=0 ){ p->pcnt = (p->cnt)/4.0; _medianFinalize(context); } } /* ** Returns the upper_quartile value */ static void upper_quartileFinalize(sqlite3_context *context){ ModeCtx *p; p = (ModeCtx*) sqlite3_aggregate_context(context, 0); if( p!=0 ){ p->pcnt = (p->cnt)*3/4.0; _medianFinalize(context); } } /* ** Returns the stdev value */ static void stdevFinalize(sqlite3_context *context){ StdevCtx *p; p = sqlite3_aggregate_context(context, 0); if( p && p->cnt>1 ){ sqlite3_result_double(context, sqrt(p->rS/(p->cnt-1))); }else{ sqlite3_result_double(context, 0.0); } } /* ** Returns the variance value */ static void varianceFinalize(sqlite3_context *context){ StdevCtx *p; p = sqlite3_aggregate_context(context, 0); if( p && p->cnt>1 ){ sqlite3_result_double(context, p->rS/(p->cnt-1)); }else{ sqlite3_result_double(context, 0.0); } } #ifdef SQLITE_SOUNDEX /* relicoder factored code */ /* ** Calculates the soundex value of a string */ static void soundex(const u8 *zIn, char *zResult){ int i, j; static const unsigned char iCode[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 0, 1, 2, 0, 0, 2, 2, 4, 5, 5, 0, 1, 2, 6, 2, 3, 0, 1, 0, 2, 0, 2, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 0, 1, 2, 0, 0, 2, 2, 4, 5, 5, 0, 1, 2, 6, 2, 3, 0, 1, 0, 2, 0, 2, 0, 0, 0, 0, 0, }; for(i=0; zIn[i] && !isalpha(zIn[i]); i++){} if( zIn[i] ){ zResult[0] = toupper(zIn[i]); for(j=1; j<4 && zIn[i]; i++){ int code = iCode[zIn[i]&0x7f]; if( code>0 ){ zResult[j++] = code + '0'; } } while( j<4 ){ zResult[j++] = '0'; } zResult[j] = 0; }else{ strcpy(zResult, "?000"); } } /* ** computes the number of different characters between the soundex value fo 2 strings */ static void differenceFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ char zResult1[8]; char zResult2[8]; char *zR1 = zResult1; char *zR2 = zResult2; int rVal = 0; int i = 0; const u8 *zIn1; const u8 *zIn2; assert( argc==2 ); if( sqlite3_value_type(argv[0])==SQLITE_NULL || sqlite3_value_type(argv[1])==SQLITE_NULL ){ sqlite3_result_null(context); return; } zIn1 = (u8*)sqlite3_value_text(argv[0]); zIn2 = (u8*)sqlite3_value_text(argv[1]); soundex(zIn1, zR1); soundex(zIn2, zR2); for(i=0; i<4; ++i){ if( sqliteCharVal((unsigned char *)zR1)==sqliteCharVal((unsigned char *)zR2) ) ++rVal; sqliteNextChar(zR1); sqliteNextChar(zR2); } sqlite3_result_int(context, rVal); } #endif static void lastRowsFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ sqlite3 *db = sqlite3_context_db_handle(context); sqlite3_result_int64(context, sqlite3_changes(db)); } /* ** This function registered all of the above C functions as SQL ** functions. This should be the only routine in this file with ** external linkage. */ int RegisterExtensionFunctions(sqlite3 *db){ static const struct FuncDefs { char *zName; signed char nArg; u8 argType; /* 0: none. 1: db 2: (-1) */ u8 eTextRep; /* 1: UTF-16. 0: UTF-8 */ u8 needCollSeq; void (*xFunc)(sqlite3_context*,int,sqlite3_value **); } aFuncs[] = { /* math.h */ { "acos", 1, 0, SQLITE_UTF8, 0, acosFunc }, { "asin", 1, 0, SQLITE_UTF8, 0, asinFunc }, { "atan", 1, 0, SQLITE_UTF8, 0, atanFunc }, { "atn2", 2, 0, SQLITE_UTF8, 0, atn2Func }, /* XXX alias */ { "atan2", 2, 0, SQLITE_UTF8, 0, atn2Func }, { "acosh", 1, 0, SQLITE_UTF8, 0, acoshFunc }, { "asinh", 1, 0, SQLITE_UTF8, 0, asinhFunc }, { "atanh", 1, 0, SQLITE_UTF8, 0, atanhFunc }, { "difference", 2, 0, SQLITE_UTF8, 0, differenceFunc}, { "degrees", 1, 0, SQLITE_UTF8, 0, rad2degFunc }, { "radians", 1, 0, SQLITE_UTF8, 0, deg2radFunc }, { "cos", 1, 0, SQLITE_UTF8, 0, cosFunc }, { "sin", 1, 0, SQLITE_UTF8, 0, sinFunc }, { "tan", 1, 0, SQLITE_UTF8, 0, tanFunc }, { "cot", 1, 0, SQLITE_UTF8, 0, cotFunc }, { "cosh", 1, 0, SQLITE_UTF8, 0, coshFunc }, { "sinh", 1, 0, SQLITE_UTF8, 0, sinhFunc }, { "tanh", 1, 0, SQLITE_UTF8, 0, tanhFunc }, { "coth", 1, 0, SQLITE_UTF8, 0, cothFunc }, { "exp", 1, 0, SQLITE_UTF8, 0, expFunc }, { "log", 1, 0, SQLITE_UTF8, 0, logFunc }, { "log10", 1, 0, SQLITE_UTF8, 0, log10Func }, { "power", 2, 0, SQLITE_UTF8, 0, powerFunc }, { "sign", 1, 0, SQLITE_UTF8, 0, signFunc }, { "sqrt", 1, 0, SQLITE_UTF8, 0, sqrtFunc }, { "square", 1, 0, SQLITE_UTF8, 0, squareFunc }, { "ceil", 1, 0, SQLITE_UTF8, 0, ceilFunc }, { "ceiling", 1, 0, SQLITE_UTF8, 0, ceilFunc }, { "floor", 1, 0, SQLITE_UTF8, 0, floorFunc }, { "pi", 0, 0, SQLITE_UTF8, 0, piFunc }, { "last_rows_affected", 0, 0, SQLITE_UTF8, 0, lastRowsFunc }, /* string */ { "replicate", 2, 0, SQLITE_UTF8, 0, replicateFunc }, { "charindex", 2, 0, SQLITE_UTF8, 1, charindexFunc }, { "charindex", 3, 0, SQLITE_UTF8, 1, charindexFunc }, { "leftstr", 2, 0, SQLITE_UTF8, 0, leftFunc }, { "rightstr", 2, 0, SQLITE_UTF8, 0, rightFunc }, #ifndef HAVE_TRIM { "ltrim", 1, 0, SQLITE_UTF8, 0, ltrimFunc }, { "rtrim", 1, 0, SQLITE_UTF8, 0, rtrimFunc }, { "trim", 1, 0, SQLITE_UTF8, 0, trimFunc }, { "replace", 3, 0, SQLITE_UTF8, 0, replaceFunc }, #endif { "reverse", 1, 0, SQLITE_UTF8, 0, reverseFunc }, { "proper", 1, 0, SQLITE_UTF8, 0, properFunc }, { "padl", 2, 0, SQLITE_UTF8, 0, padlFunc }, { "padr", 2, 0, SQLITE_UTF8, 0, padrFunc }, { "padc", 2, 0, SQLITE_UTF8, 0, padcFunc }, { "strfilter", 2, 0, SQLITE_UTF8, 0, strfilterFunc }, }; /* Aggregate functions */ static const struct FuncDefAgg { char *zName; signed char nArg; u8 argType; u8 needCollSeq; void (*xStep)(sqlite3_context*,int,sqlite3_value**); void (*xFinalize)(sqlite3_context*); } aAggs[] = { { "stdev", 1, 0, 0, varianceStep, stdevFinalize }, { "variance", 1, 0, 0, varianceStep, varianceFinalize }, { "mode", 1, 0, 0, modeStep, modeFinalize }, { "median", 1, 0, 0, modeStep, medianFinalize }, { "lower_quartile", 1, 0, 0, modeStep, lower_quartileFinalize }, { "upper_quartile", 1, 0, 0, modeStep, upper_quartileFinalize }, }; int i; for(i=0; i<sizeof(aFuncs)/sizeof(aFuncs[0]); i++){ void *pArg = 0; switch( aFuncs[i].argType ){ case 1: pArg = db; break; case 2: pArg = (void *)(-1); break; } //sqlite3CreateFunc /* LMH no error checking */ sqlite3_create_function(db, aFuncs[i].zName, aFuncs[i].nArg, aFuncs[i].eTextRep, pArg, aFuncs[i].xFunc, 0, 0); #if 1 if( aFuncs[i].needCollSeq ){ struct FuncDef *pFunc = sqlite3FindFunction(db, aFuncs[i].zName, strlen(aFuncs[i].zName), aFuncs[i].nArg, aFuncs[i].eTextRep, 0); if( pFunc && aFuncs[i].needCollSeq ){ pFunc->needCollSeq = 1; } } #endif } for(i=0; i<sizeof(aAggs)/sizeof(aAggs[0]); i++){ void *pArg = 0; switch( aAggs[i].argType ){ case 1: pArg = db; break; case 2: pArg = (void *)(-1); break; } //sqlite3CreateFunc /* LMH no error checking */ sqlite3_create_function(db, aAggs[i].zName, aAggs[i].nArg, SQLITE_UTF8, pArg, 0, aAggs[i].xStep, aAggs[i].xFinalize); #if 0 if( aAggs[i].needCollSeq ){ struct FuncDefAgg *pFunc = sqlite3FindFunction( db, aAggs[i].zName, strlen(aAggs[i].zName), aAggs[i].nArg, SQLITE_UTF8, 0); if( pFunc && aAggs[i].needCollSeq ){ pFunc->needCollSeq = 1; } } #endif } return 0; } #ifdef COMPILE_SQLITE_EXTENSIONS_AS_LOADABLE_MODULE int sqlite3_extension_init( sqlite3 *db, char **pzErrMsg, const sqlite3_api_routines *pApi){ SQLITE_EXTENSION_INIT2(pApi); RegisterExtensionFunctions(db); return 0; } #endif /* COMPILE_SQLITE_EXTENSIONS_AS_LOADABLE_MODULE */ map map_make(cmp_func cmp){ map r; r.cmp=cmp; r.base = 0; return r; } void* xcalloc(size_t nmemb, size_t size, char* s){ void* ret = calloc(nmemb, size); return ret; } void xfree(void* p){ free(p); } void node_insert(node** n, cmp_func cmp, void *e){ int c; node* nn; if(*n==0){ nn = (node*)xcalloc(1,sizeof(node), "for node"); nn->data = e; nn->count = 1; *n=nn; }else{ c=cmp((*n)->data,e); if(0==c){ ++((*n)->count); xfree(e); }else if(c>0){ /* put it right here */ node_insert(&((*n)->l), cmp, e); }else{ node_insert(&((*n)->r), cmp, e); } } } void map_insert(map *m, void *e){ node_insert(&(m->base), m->cmp, e); } void node_iterate(node *n, map_iterator iter, void* p){ if(n){ if(n->l) node_iterate(n->l, iter, p); iter(n->data, n->count, p); if(n->r) node_iterate(n->r, iter, p); } } void map_iterate(map *m, map_iterator iter, void* p){ node_iterate(m->base, iter, p); } void node_destroy(node *n){ if(0!=n){ xfree(n->data); if(n->l) node_destroy(n->l); if(n->r) node_destroy(n->r); xfree(n); } } void map_destroy(map *m){ node_destroy(m->base); } int int_cmp(const void *a, const void *b){ int64_t aa = *(int64_t *)(a); int64_t bb = *(int64_t *)(b); /* printf("cmp %d <=> %d\n",aa,bb); */ if(aa==bb) return 0; else if(aa<bb) return -1; else return 1; } int double_cmp(const void *a, const void *b){ double aa = *(double *)(a); double bb = *(double *)(b); /* printf("cmp %d <=> %d\n",aa,bb); */ if(aa==bb) return 0; else if(aa<bb) return -1; else return 1; } void print_elem(void *e, int64_t c, void* p){ int ee = *(int*)(e); printf("%d => %lld\n", ee,c); } |
Changes to SQLite.Interop/interop.c.
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#include "src/sqlite3.c" #include "crypt.c" #include <tchar.h> #if NDEBUG #if _WIN32_WCE #include "merge.h" #else #include "merge_full.h" #endif // _WIN32_WCE #endif // NDEBUG #ifdef SQLITE_OS_WIN // Additional flag for sqlite3.flags, we use it as a reference counter #define SQLITE_WantClose 0x10000000 typedef void (WINAPI *SQLITEUSERFUNC)(void *, int, void **); typedef int (WINAPI *SQLITECOLLATION)(int, const void *, int, const void*); typedef void (WINAPI *SQLITEUPDATEHOOK)(int, const char *, int, const char *, int, sqlite_int64); typedef int (WINAPI *SQLITECOMMITHOOK)(); typedef void (WINAPI *SQLITEROLLBACKHOOK)(); typedef HANDLE (WINAPI *CREATEFILEW)( LPCWSTR, DWORD, DWORD, LPSECURITY_ATTRIBUTES, DWORD, DWORD, HANDLE); // Callback wrappers int sqlite3_interop_collationfunc(void *pv, int len1, const void *pv1, int len2, const void *pv2) { SQLITECOLLATION *p = (SQLITECOLLATION *)pv; return p[0](len1, pv1, len2, pv2); } void sqlite3_interop_func(sqlite3_context *pctx, int n, sqlite3_value **pv) { SQLITEUSERFUNC *pf = (SQLITEUSERFUNC *)sqlite3_user_data(pctx); pf[0](pctx, n, (void **)pv); } void sqlite3_interop_step(sqlite3_context *pctx, int n, sqlite3_value **pv) { SQLITEUSERFUNC *pf = (SQLITEUSERFUNC *)sqlite3_user_data(pctx); pf[1](pctx, n, (void **)pv); } void sqlite3_interop_final(sqlite3_context *pctx) { SQLITEUSERFUNC *pf = (SQLITEUSERFUNC *)sqlite3_user_data(pctx); pf[2](pctx, 0, 0); } __declspec(dllexport) void WINAPI sqlite3_sleep_interop(int milliseconds) { Sleep(milliseconds); } static CRITICAL_SECTION g_cs; static LONG g_dwcsInit = 0; //void InitializeDbMutex(sqlite3 *pdb) //{ // //pdb->pTraceArg = (CRITICAL_SECTION *)sqlite3_malloc(sizeof(CRITICAL_SECTION)); // //InitializeCriticalSection(pdb->pTraceArg); //} // void EnterGlobalMutex() { if (InterlockedCompareExchange(&g_dwcsInit, 1, 0) == 0) InitializeCriticalSection(&g_cs); EnterCriticalSection(&g_cs); } void LeaveGlobalMutex() { LeaveCriticalSection(&g_cs); } // //int sqlite3_closeAndFreeMutex(sqlite3 *db) //{ // //CRITICAL_SECTION *pcrit = db->pTraceArg; // int ret; // //EnterDbMutex(db); // // ret = sqlite3_close(db); // //if (ret == SQLITE_OK) // //{ // // if (pcrit) // // { // // LeaveCriticalSection(pcrit); // // DeleteCriticalSection(pcrit); // // sqlite3_free(pcrit); // // } // //} // //else // // LeaveDbMutex(db); // // return ret; //} int SetCompression(const wchar_t *pwszFilename, unsigned short ufLevel) { #ifdef FSCTL_SET_COMPRESSION HMODULE hMod = GetModuleHandle(_T("KERNEL32")); CREATEFILEW pfunc; HANDLE hFile; ................................................................................ } __declspec(dllexport) int WINAPI sqlite3_decompressfile(const wchar_t *pwszFilename) { return SetCompression(pwszFilename, COMPRESSION_FORMAT_NONE); } __declspec(dllexport) void WINAPI sqlite3_function_free_callbackcookie(void *pCookie) { if (pCookie) free(pCookie); } // sqlite3 wrappers __declspec(dllexport) const char * WINAPI sqlite3_libversion_interop(int *plen) { const char *val = sqlite3_libversion(); *plen = (val != 0) ? strlen(val) : 0; return val; } __declspec(dllexport) int WINAPI sqlite3_libversion_number_interop(void) { return sqlite3_libversion_number(); } /* The goal of this version of close is different than that of sqlite3_close(), and is designed to lend itself better to .NET's non-deterministic finalizers and the GC thread. SQLite will not close a database if statements are open on it -- but for our purposes, we'd rather finalize all active statements and forcibly close the database. The reason is simple -- a lot of people don't Dispose() of their objects correctly and let the garbage collector do it. This leads to unexpected behavior when a user thinks they've closed a database, but it's still open because not all the statements have hit the GC yet. ................................................................................ } LeaveGlobalMutex(); return ret; } // Returns the number of databases attached to this one __declspec(dllexport) void WINAPI sqlite3_detach_all_interop(sqlite3 *db) { } __declspec(dllexport) int WINAPI sqlite3_exec_interop(sqlite3 *db, const char *sql, sqlite3_callback cb, void *pv, char **errmsg, int *plen) { int n; n = sqlite3_exec(db, sql, cb, pv, errmsg); *plen = (*errmsg != 0) ? strlen(*errmsg) : 0; return n; } __declspec(dllexport) sqlite_int64 WINAPI sqlite3_last_insert_rowid_interop(sqlite3 *db) { return sqlite3_last_insert_rowid(db); } __declspec(dllexport) int WINAPI sqlite3_changes_interop(sqlite3 *db) { return sqlite3_changes(db); } __declspec(dllexport) int WINAPI sqlite3_total_changes_interop(sqlite3 *db) { return sqlite3_total_changes(db); } __declspec(dllexport) void WINAPI sqlite3_interrupt_interop(sqlite3 *db) { sqlite3_interrupt(db); } __declspec(dllexport) int WINAPI sqlite3_complete_interop(const char *sql) { return sqlite3_complete(sql); } __declspec(dllexport) int WINAPI sqlite3_complete16_interop(const void *sql) { return sqlite3_complete16(sql); } __declspec(dllexport) int WINAPI sqlite3_busy_handler_interop(sqlite3 *db, int(*cb)(void *, int), void *pv) { return sqlite3_busy_handler(db, cb, pv); } __declspec(dllexport) int WINAPI sqlite3_busy_timeout_interop(sqlite3 *db, int ms) { return sqlite3_busy_timeout(db, ms); } __declspec(dllexport) int WINAPI sqlite3_get_table_interop(sqlite3 *db, const char *sql, char ***resultp, int *nrow, int *ncolumn, char **errmsg, int *plen) { int n = sqlite3_get_table(db, sql, resultp, nrow, ncolumn, errmsg); *plen = (*errmsg != 0) ? strlen((char *)*errmsg) : 0; return n; } __declspec(dllexport) void WINAPI sqlite3_free_table_interop(char **result) { sqlite3_free_table(result); } __declspec(dllexport) void WINAPI sqlite3_free_interop(char *z) { sqlite3_free(z); } __declspec(dllexport) int WINAPI sqlite3_open_interop(const char*filename, sqlite3 **ppdb) { int ret = sqlite3_open(filename, ppdb); if (!ret) sqlite3_enable_load_extension(*ppdb, 1); return ret; } __declspec(dllexport) int WINAPI sqlite3_open16_interop(const void *filename, sqlite3 **ppdb) { int ret = sqlite3_open16(filename, ppdb); if (!ret) sqlite3_enable_load_extension(*ppdb, 1); return ret; } __declspec(dllexport) int WINAPI sqlite3_errcode_interop(sqlite3 *db) { return sqlite3_errcode(db); } __declspec(dllexport) const char * WINAPI sqlite3_errmsg_interop(sqlite3 *db, int *plen) { const char *pval = sqlite3_errmsg(db); *plen = (pval != 0) ? strlen(pval) : 0; return pval; } __declspec(dllexport) const char * WINAPI sqlite3_errmsg_stmt_interop(sqlite3_stmt *stmt, int *plen) { Vdbe *p = (Vdbe *)stmt; return sqlite3_errmsg_interop(p->db, plen); } __declspec(dllexport) int WINAPI sqlite3_prepare_interop(sqlite3 *db, const char *sql, int nbytes, sqlite3_stmt **ppstmt, const char **pztail, int *plen) { int n; n = sqlite3_prepare(db, sql, nbytes, ppstmt, pztail); *plen = (*pztail != 0) ? strlen(*pztail) : 0; ................................................................................ n = sqlite3_prepare16(db, sql, nchars * sizeof(wchar_t), ppstmt, pztail); *plen = (*pztail != 0) ? wcslen((wchar_t *)*pztail) * sizeof(wchar_t) : 0; return n; } __declspec(dllexport) int WINAPI sqlite3_bind_blob_interop(sqlite3_stmt *stmt, int iCol, const void *pv, int n, void(*cb)(void*)) { return sqlite3_bind_blob(stmt, iCol, pv, n, cb); } __declspec(dllexport) int WINAPI sqlite3_bind_double_interop(sqlite3_stmt *stmt, int iCol, double *val) { return sqlite3_bind_double(stmt,iCol,*val); } __declspec(dllexport) int WINAPI sqlite3_bind_int_interop(sqlite3_stmt *stmt, int iCol, int val) { return sqlite3_bind_int(stmt, iCol, val); } __declspec(dllexport) int WINAPI sqlite3_bind_int64_interop(sqlite3_stmt *stmt, int iCol, sqlite_int64 *val) { return sqlite3_bind_int64(stmt,iCol,*val); } __declspec(dllexport) int WINAPI sqlite3_bind_null_interop(sqlite3_stmt *stmt, int iCol) { return sqlite3_bind_null(stmt, iCol); } __declspec(dllexport) int WINAPI sqlite3_bind_text_interop(sqlite3_stmt *stmt, int iCol, const char *val, int n, void(*cb)(void *)) { return sqlite3_bind_text(stmt, iCol, val, n, cb); } __declspec(dllexport) int WINAPI sqlite3_bind_text16_interop(sqlite3_stmt *stmt, int iCol, const void *val, int n, void(*cb)(void *)) { return sqlite3_bind_text16(stmt, iCol, val, n, cb); } __declspec(dllexport) int WINAPI sqlite3_bind_parameter_count_interop(sqlite3_stmt *stmt) { return sqlite3_bind_parameter_count(stmt); } __declspec(dllexport) const char * WINAPI sqlite3_bind_parameter_name_interop(sqlite3_stmt *stmt, int iCol, int *plen) { const char *pval = sqlite3_bind_parameter_name(stmt, iCol); *plen = (pval != 0) ? strlen(pval) : 0; return pval; } __declspec(dllexport) int WINAPI sqlite3_bind_parameter_index_interop(sqlite3_stmt *stmt, const char *zName) { return sqlite3_bind_parameter_index(stmt, zName); } __declspec(dllexport) int WINAPI sqlite3_column_count_interop(sqlite3_stmt *stmt) { return sqlite3_column_count(stmt); } __declspec(dllexport) const char * WINAPI sqlite3_column_name_interop(sqlite3_stmt *stmt, int iCol, int *plen) { const char *pval = sqlite3_column_name(stmt, iCol); *plen = (pval != 0) ? strlen(pval) : 0; return pval; } ................................................................................ __declspec(dllexport) const void * WINAPI sqlite3_column_decltype16_interop(sqlite3_stmt *stmt, int iCol, int *plen) { const void *pval = sqlite3_column_decltype16(stmt, iCol); *plen = (pval != 0) ? wcslen((wchar_t *)pval) * sizeof(wchar_t) : 0; return pval; } __declspec(dllexport) int WINAPI sqlite3_step_interop(sqlite3_stmt *stmt) { int ret; if (((Vdbe *)stmt)->magic == VDBE_MAGIC_DEAD) return SQLITE_ERROR; ret = sqlite3_step(stmt); return ret; } __declspec(dllexport) int WINAPI sqlite3_data_count_interop(sqlite3_stmt *stmt) { return sqlite3_data_count(stmt); } __declspec(dllexport) const void * WINAPI sqlite3_column_blob_interop(sqlite3_stmt *stmt, int iCol) { return sqlite3_column_blob(stmt, iCol); } __declspec(dllexport) int WINAPI sqlite3_column_bytes_interop(sqlite3_stmt *stmt, int iCol) { return sqlite3_column_bytes(stmt, iCol); } __declspec(dllexport) int WINAPI sqlite3_column_bytes16_interop(sqlite3_stmt *stmt, int iCol) { return sqlite3_column_bytes16(stmt, iCol); } __declspec(dllexport) void WINAPI sqlite3_column_double_interop(sqlite3_stmt *stmt, int iCol, double *val) { *val = sqlite3_column_double(stmt,iCol); } __declspec(dllexport) int WINAPI sqlite3_column_int_interop(sqlite3_stmt *stmt, int iCol) { return sqlite3_column_int(stmt, iCol); } __declspec(dllexport) void WINAPI sqlite3_column_int64_interop(sqlite3_stmt *stmt, int iCol, sqlite_int64 *val) { *val = sqlite3_column_int64(stmt,iCol); } __declspec(dllexport) const unsigned char * WINAPI sqlite3_column_text_interop(sqlite3_stmt *stmt, int iCol, int *plen) { ................................................................................ __declspec(dllexport) const void * WINAPI sqlite3_column_text16_interop(sqlite3_stmt *stmt, int iCol, int *plen) { const void *pval = sqlite3_column_text16(stmt, iCol); *plen = (pval != 0) ? wcslen((wchar_t *)pval) * sizeof(wchar_t): 0; return pval; } __declspec(dllexport) int WINAPI sqlite3_column_type_interop(sqlite3_stmt *stmt, int iCol) { return sqlite3_column_type(stmt, iCol); } __declspec(dllexport) int WINAPI sqlite3_finalize_interop(sqlite3_stmt *stmt) { // Try and finalize a statement, and close the database it belonged to if the database was marked for closing Vdbe *p; sqlite3 *db; int ret; ................................................................................ int ret; if (((Vdbe *)stmt)->magic == VDBE_MAGIC_DEAD) return SQLITE_SCHEMA; ret = sqlite3_reset(stmt); return ret; } __declspec(dllexport) int WINAPI sqlite3_create_function_interop(sqlite3 *psql, const char *zFunctionName, int nArg, int eTextRep, SQLITEUSERFUNC func, SQLITEUSERFUNC funcstep, SQLITEUSERFUNC funcfinal, void **ppCookie) { int n; SQLITEUSERFUNC *p = (SQLITEUSERFUNC *)malloc(sizeof(SQLITEUSERFUNC) * 3); p[0] = func; p[1] = funcstep; p[2] = funcfinal; *ppCookie = 0; n = sqlite3_create_function(psql, zFunctionName, nArg, eTextRep, p, (func != 0) ? sqlite3_interop_func : 0, (funcstep != 0) ? sqlite3_interop_step : 0, (funcfinal != 0) ? sqlite3_interop_final : 0); if (n != 0) free(p); else *ppCookie = p; return n; } __declspec(dllexport) int WINAPI sqlite3_create_function16_interop(sqlite3 *psql, void *zFunctionName, int nArg, int eTextRep, SQLITEUSERFUNC func, SQLITEUSERFUNC funcstep, SQLITEUSERFUNC funcfinal, void **ppCookie) { int n; SQLITEUSERFUNC *p = (SQLITEUSERFUNC *)malloc(sizeof(SQLITEUSERFUNC) * 3); p[0] = func; p[1] = funcstep; p[2] = funcfinal; *ppCookie = 0; n = sqlite3_create_function16(psql, zFunctionName, nArg, eTextRep, p, (func != 0) ? sqlite3_interop_func : 0, (funcstep != 0) ? sqlite3_interop_step : 0, (funcfinal != 0) ? sqlite3_interop_final : 0); if (n != 0) free(p); else *ppCookie = p; return n; } __declspec(dllexport) int WINAPI sqlite3_create_collation_interop(sqlite3* db, const char *zName, int eTextRep, void* pvUser, SQLITECOLLATION func, void **ppCookie) { int n; SQLITECOLLATION *p = (SQLITECOLLATION *)malloc(sizeof(SQLITECOLLATION)); p[0] = func; *ppCookie = 0; n = sqlite3_create_collation(db, zName, eTextRep, p, sqlite3_interop_collationfunc); if (n != 0) free(p); else *ppCookie = p; return n; } __declspec(dllexport) int WINAPI sqlite3_create_collation16_interop(sqlite3* db, const void *zName, int eTextRep, void* pvUser, SQLITECOLLATION func, void **ppCookie) { int n; SQLITECOLLATION *p = (SQLITECOLLATION *)malloc(sizeof(SQLITECOLLATION)); p[0] = func; *ppCookie = 0; n = sqlite3_create_collation16(db, (const char *)zName, eTextRep, p, sqlite3_interop_collationfunc); if (n != 0) free(p); else *ppCookie = p; return n; } __declspec(dllexport) int WINAPI sqlite3_aggregate_count_interop(sqlite3_context *pctx) { return sqlite3_aggregate_count(pctx); } __declspec(dllexport) const void * WINAPI sqlite3_value_blob_interop(sqlite3_value *val) { return sqlite3_value_blob(val); } __declspec(dllexport) int WINAPI sqlite3_value_bytes_interop(sqlite3_value *val) { return sqlite3_value_bytes(val); } __declspec(dllexport) int WINAPI sqlite3_value_bytes16_interop(sqlite3_value *val) { return sqlite3_value_bytes16(val); } __declspec(dllexport) void WINAPI sqlite3_value_double_interop(sqlite3_value *pval, double *val) { *val = sqlite3_value_double(pval); } __declspec(dllexport) int WINAPI sqlite3_value_int_interop(sqlite3_value *val) { return sqlite3_value_int(val); } __declspec(dllexport) void WINAPI sqlite3_value_int64_interop(sqlite3_value *pval, sqlite_int64 *val) { *val = sqlite3_value_int64(pval); } __declspec(dllexport) const unsigned char * WINAPI sqlite3_value_text_interop(sqlite3_value *val, int *plen) { ................................................................................ __declspec(dllexport) const void * WINAPI sqlite3_value_text16_interop(sqlite3_value *val, int *plen) { const void *pval = sqlite3_value_text16(val); *plen = (pval != 0) ? wcslen((wchar_t *)pval) * sizeof(wchar_t) : 0; return pval; } __declspec(dllexport) int WINAPI sqlite3_value_type_interop(sqlite3_value *val) { return sqlite3_value_type(val); } __declspec(dllexport) void * WINAPI sqlite3_aggregate_context_interop(sqlite3_context *pctx, int n) { return sqlite3_aggregate_context(pctx, n); } __declspec(dllexport) void WINAPI sqlite3_result_blob_interop(sqlite3_context *ctx, const void *pv, int n, void(*cb)(void *)) { sqlite3_result_blob(ctx, pv, n, cb); } __declspec(dllexport) void WINAPI sqlite3_result_double_interop(sqlite3_context *pctx, double *val) { sqlite3_result_double(pctx, *val); } __declspec(dllexport) void WINAPI sqlite3_result_int_interop(sqlite3_context *pctx, int val) { sqlite3_result_int(pctx, val); } __declspec(dllexport) void WINAPI sqlite3_result_int64_interop(sqlite3_context *pctx, sqlite_int64 *val) { sqlite3_result_int64(pctx, *val); } __declspec(dllexport) void WINAPI sqlite3_result_null_interop(sqlite3_context *pctx) { sqlite3_result_null(pctx); } __declspec(dllexport) void WINAPI sqlite3_result_error_interop(sqlite3_context *ctx, const char *pv, int n) { sqlite3_result_error(ctx, pv, n); } __declspec(dllexport) void WINAPI sqlite3_result_error16_interop(sqlite3_context *ctx, const void *pv, int n) { sqlite3_result_error16(ctx, pv, n); } __declspec(dllexport) void WINAPI sqlite3_result_text_interop(sqlite3_context *ctx, const char *pv, int n, void(*cb)(void *)) { sqlite3_result_text(ctx, pv, n, cb); } __declspec(dllexport) void WINAPI sqlite3_result_text16_interop(sqlite3_context *ctx, const void *pv, int n, void(*cb)(void *)) { sqlite3_result_text16(ctx, pv, n, cb); } __declspec(dllexport) const char * WINAPI sqlite3_column_database_name_interop(sqlite3_stmt *stmt, int iCol, int *plen) { const char *pval = sqlite3_column_database_name(stmt, iCol); *plen = (pval != 0) ? strlen(pval) : 0; return pval; ................................................................................ n = sqlite3_table_column_metadata(db, zDbName, zTableName, zColumnName, pzDataType, pzCollSeq, pNotNull, pPrimaryKey, pAutoinc); *pdtLen = (*pzDataType != 0) ? strlen(*pzDataType) : 0; *pcsLen = (*pzCollSeq != 0) ? strlen(*pzCollSeq) : 0; return n; } __declspec(dllexport) int WINAPI sqlite3_table_hascheckconstraints(sqlite3 *db, const char *zDbName, const char *zTableName, int *result) { int rc; char *zErrMsg = 0; Table *pTab = 0; *result = 0; /* Ensure the database schema has been loaded */ sqlite3_mutex_enter(db->mutex); (void)sqlite3SafetyOn(db); sqlite3BtreeEnterAll(db); rc = sqlite3Init(db, &zErrMsg); sqlite3BtreeLeaveAll(db); if( SQLITE_OK!=rc ){ goto error_out; } /* Locate the table in question */ pTab = sqlite3FindTable(db, zTableName, zDbName); if( !pTab || pTab->pSelect ){ pTab = 0; goto error_out; } if (pTab->pCheck) *result = 1; error_out: (void)sqlite3SafetyOff(db); if( !pTab ){ sqlite3SetString(&zErrMsg, db, "no such table : ", zTableName, 0); rc = SQLITE_ERROR; } sqlite3Error(db, rc, (zErrMsg?"%s":0), zErrMsg); sqlite3_free(zErrMsg); rc = sqlite3ApiExit(db, rc); sqlite3_mutex_leave(db->mutex); return rc; } __declspec(dllexport) int WINAPI sqlite3_index_column_info_interop(sqlite3 *db, const char *zDb, const char *zIndexName, const char *zColumnName, int *sortOrder, int *onError, char **pzColl, int *plen) { Index *pIdx; Table *pTab; char *zErrMsg = 0; int n; pIdx = sqlite3FindIndex(db, zIndexName, zDb); ................................................................................ return SQLITE_OK; } } return SQLITE_ERROR; } void sqlite3_update_callback(void *pArg, int type, const char *pDatabase, const char *pTable, sqlite_int64 rowid) { SQLITEUPDATEHOOK func = (SQLITEUPDATEHOOK)pArg; func(type, pDatabase, strlen(pDatabase), pTable, strlen(pTable), rowid); } int sqlite3_commit_callback(void *pArg) { return ((SQLITECOMMITHOOK)pArg)(); } void sqlite3_rollback_callback(void *pArg) { ((SQLITEROLLBACKHOOK)pArg)(); } __declspec(dllexport) void * WINAPI sqlite3_update_hook_interop(sqlite3 *pDb, SQLITEUPDATEHOOK func) { return sqlite3_update_hook(pDb, sqlite3_update_callback, func); } __declspec(dllexport) void * WINAPI sqlite3_commit_hook_interop(sqlite3 *pDb, SQLITECOMMITHOOK func) { return sqlite3_commit_hook(pDb, sqlite3_commit_callback, func); } __declspec(dllexport) void * WINAPI sqlite3_rollback_hook_interop(sqlite3 *pDb, SQLITEROLLBACKHOOK func) { return sqlite3_rollback_hook(pDb, sqlite3_rollback_callback, func); } __declspec(dllexport) int WINAPI sqlite3_table_cursor(sqlite3_stmt *pstmt, int iDb, Pgno tableRootPage) { Vdbe *p = (Vdbe *)pstmt; sqlite3 *db = (p == NULL) ? NULL : p->db; int n; int ret = -1; ................................................................................ break; } sqlite3_mutex_leave(db->mutex); return ret; } // IMPORTANT: This placeholder is here for a reason!!! // On the Compact Framework the .data section of the DLL must have its RawDataSize larger than the VirtualSize! // If its not, strong name validation will fail and other bad things will happen. //#if _WIN32_WCE //__int64 _ph[17] = {1}; //#endif // _WIN32_WCE #endif // SQLITE_OS_WIN |
> > > > > > > > | > > | | | | < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < | < > > > | > < < < < > | | | > | < | | | | | < > | | < < > | < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < | < > | < < < < | | < < < | < < < < < < < < < < < < < < < | < < < | < < > > | < < < < > | < | < | < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < | | > < > < < < > > | > | < > | < | | | > > | > | < < < > < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < |
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#ifdef NDEBUG #include "src/sqlite3.c" #else #include "splitsource\btreeint.h" #include "splitsource\vdbeint.h" #include "splitsource\sqliteInt.h" #endif #include "extension-functions.c" #include "crypt.c" #include <tchar.h> #ifdef NDEBUG #if _WIN32_WCE #include "merge.h" #else #include "merge_full.h" #endif // _WIN32_WCE #endif // NDEBUG extern int RegisterExtensionFunctions(sqlite3 *db); #ifdef SQLITE_OS_WIN // Additional flag for sqlite3.flags, we use it as a reference counter #define SQLITE_WantClose 0x10000000 // Additional open flags, we use this one privately //#define SQLITE_OPEN_SHAREDCACHE 0x01000000 typedef void (*SQLITEUSERFUNC)(sqlite3_context *, int, sqlite3_value **); typedef void (*SQLITEFUNCFINAL)(sqlite3_context *); typedef HANDLE (WINAPI *CREATEFILEW)( LPCWSTR, DWORD, DWORD, LPSECURITY_ATTRIBUTES, DWORD, DWORD, HANDLE); static CRITICAL_SECTION g_cs; static LONG g_dwcsInit = 0; void EnterGlobalMutex() { if (InterlockedCompareExchange(&g_dwcsInit, 1, 0) == 0) InitializeCriticalSection(&g_cs); EnterCriticalSection(&g_cs); } void LeaveGlobalMutex() { LeaveCriticalSection(&g_cs); } int SetCompression(const wchar_t *pwszFilename, unsigned short ufLevel) { #ifdef FSCTL_SET_COMPRESSION HMODULE hMod = GetModuleHandle(_T("KERNEL32")); CREATEFILEW pfunc; HANDLE hFile; ................................................................................ } __declspec(dllexport) int WINAPI sqlite3_decompressfile(const wchar_t *pwszFilename) { return SetCompression(pwszFilename, COMPRESSION_FORMAT_NONE); } /* The goal of this version of close is different than that of sqlite3_close(), and is designed to lend itself better to .NET's non-deterministic finalizers and the GC thread. SQLite will not close a database if statements are open on it -- but for our purposes, we'd rather finalize all active statements and forcibly close the database. The reason is simple -- a lot of people don't Dispose() of their objects correctly and let the garbage collector do it. This leads to unexpected behavior when a user thinks they've closed a database, but it's still open because not all the statements have hit the GC yet. ................................................................................ } LeaveGlobalMutex(); return ret; } __declspec(dllexport) int WINAPI sqlite3_open_interop(const char*filename, int flags, sqlite3 **ppdb) { int ret; //int sharedcache = ((flags & SQLITE_OPEN_SHAREDCACHE) != 0); //flags &= ~SQLITE_OPEN_SHAREDCACHE; //EnterGlobalMutex(); //sqlite3_enable_shared_cache(sharedcache); ret = sqlite3_open_v2(filename, ppdb, flags, NULL); //sqlite3_enable_shared_cache(0); if (ret == 0) RegisterExtensionFunctions(*ppdb); //LeaveGlobalMutex(); return ret; } __declspec(dllexport) int WINAPI sqlite3_open16_interop(const char *filename, int flags, sqlite3 **ppdb) { int ret = sqlite3_open_interop(filename, flags, ppdb); if (!ret) { if(!DbHasProperty(*ppdb, 0, DB_SchemaLoaded)) ENC(*ppdb) = SQLITE_UTF16NATIVE; } return ret; } __declspec(dllexport) const char * WINAPI sqlite3_errmsg_interop(sqlite3 *db, int *plen) { const char *pval = sqlite3_errmsg(db); *plen = (pval != 0) ? strlen(pval) : 0; return pval; } __declspec(dllexport) int WINAPI sqlite3_prepare_interop(sqlite3 *db, const char *sql, int nbytes, sqlite3_stmt **ppstmt, const char **pztail, int *plen) { int n; n = sqlite3_prepare(db, sql, nbytes, ppstmt, pztail); *plen = (*pztail != 0) ? strlen(*pztail) : 0; ................................................................................ n = sqlite3_prepare16(db, sql, nchars * sizeof(wchar_t), ppstmt, pztail); *plen = (*pztail != 0) ? wcslen((wchar_t *)*pztail) * sizeof(wchar_t) : 0; return n; } __declspec(dllexport) int WINAPI sqlite3_bind_double_interop(sqlite3_stmt *stmt, int iCol, double *val) { return sqlite3_bind_double(stmt,iCol,*val); } __declspec(dllexport) int WINAPI sqlite3_bind_int64_interop(sqlite3_stmt *stmt, int iCol, sqlite_int64 *val) { return sqlite3_bind_int64(stmt,iCol,*val); } __declspec(dllexport) const char * WINAPI sqlite3_bind_parameter_name_interop(sqlite3_stmt *stmt, int iCol, int *plen) { const char *pval = sqlite3_bind_parameter_name(stmt, iCol); *plen = (pval != 0) ? strlen(pval) : 0; return pval; } __declspec(dllexport) const char * WINAPI sqlite3_column_name_interop(sqlite3_stmt *stmt, int iCol, int *plen) { const char *pval = sqlite3_column_name(stmt, iCol); *plen = (pval != 0) ? strlen(pval) : 0; return pval; } ................................................................................ __declspec(dllexport) const void * WINAPI sqlite3_column_decltype16_interop(sqlite3_stmt *stmt, int iCol, int *plen) { const void *pval = sqlite3_column_decltype16(stmt, iCol); *plen = (pval != 0) ? wcslen((wchar_t *)pval) * sizeof(wchar_t) : 0; return pval; } __declspec(dllexport) void WINAPI sqlite3_column_double_interop(sqlite3_stmt *stmt, int iCol, double *val) { *val = sqlite3_column_double(stmt,iCol); } __declspec(dllexport) void WINAPI sqlite3_column_int64_interop(sqlite3_stmt *stmt, int iCol, sqlite_int64 *val) { *val = sqlite3_column_int64(stmt,iCol); } __declspec(dllexport) const unsigned char * WINAPI sqlite3_column_text_interop(sqlite3_stmt *stmt, int iCol, int *plen) { ................................................................................ __declspec(dllexport) const void * WINAPI sqlite3_column_text16_interop(sqlite3_stmt *stmt, int iCol, int *plen) { const void *pval = sqlite3_column_text16(stmt, iCol); *plen = (pval != 0) ? wcslen((wchar_t *)pval) * sizeof(wchar_t): 0; return pval; } __declspec(dllexport) int WINAPI sqlite3_finalize_interop(sqlite3_stmt *stmt) { // Try and finalize a statement, and close the database it belonged to if the database was marked for closing Vdbe *p; sqlite3 *db; int ret; ................................................................................ int ret; if (((Vdbe *)stmt)->magic == VDBE_MAGIC_DEAD) return SQLITE_SCHEMA; ret = sqlite3_reset(stmt); return ret; } __declspec(dllexport) int WINAPI sqlite3_create_function_interop(sqlite3 *psql, const char *zFunctionName, int nArg, int eTextRep, void *pvUser, SQLITEUSERFUNC func, SQLITEUSERFUNC funcstep, SQLITEFUNCFINAL funcfinal, int needCollSeq) { int n; if (eTextRep == SQLITE_UTF16) eTextRep = SQLITE_UTF16NATIVE; n = sqlite3_create_function(psql, zFunctionName, nArg, eTextRep, 0, func, funcstep, funcfinal); if (n == 0) { if (needCollSeq) { FuncDef *pFunc = sqlite3FindFunction(psql, zFunctionName, strlen(zFunctionName), nArg, eTextRep, 0); if( pFunc ) { pFunc->needCollSeq = 1; } } } return n; } __declspec(dllexport) void WINAPI sqlite3_value_double_interop(sqlite3_value *pval, double *val) { *val = sqlite3_value_double(pval); } __declspec(dllexport) void WINAPI sqlite3_value_int64_interop(sqlite3_value *pval, sqlite_int64 *val) { *val = sqlite3_value_int64(pval); } __declspec(dllexport) const unsigned char * WINAPI sqlite3_value_text_interop(sqlite3_value *val, int *plen) { ................................................................................ __declspec(dllexport) const void * WINAPI sqlite3_value_text16_interop(sqlite3_value *val, int *plen) { const void *pval = sqlite3_value_text16(val); *plen = (pval != 0) ? wcslen((wchar_t *)pval) * sizeof(wchar_t) : 0; return pval; } __declspec(dllexport) void WINAPI sqlite3_result_double_interop(sqlite3_context *pctx, double *val) { sqlite3_result_double(pctx, *val); } __declspec(dllexport) void WINAPI sqlite3_result_int64_interop(sqlite3_context *pctx, sqlite_int64 *val) { sqlite3_result_int64(pctx, *val); } __declspec(dllexport) int WINAPI sqlite3_context_collcompare(sqlite3_context *ctx, const void *p1, int p1len, const void *p2, int p2len) { if (ctx->pFunc->needCollSeq == 0) return 2; return ctx->pColl->xCmp(ctx->pColl->pUser, p1len, p1, p2len, p2); } __declspec(dllexport) const char * WINAPI sqlite3_context_collseq(sqlite3_context *ctx, int *ptype, int *enc, int *plen) { CollSeq *pColl = ctx->pColl; *ptype = 0; *plen = 0; *enc = 0; if (ctx->pFunc->needCollSeq == 0) return NULL; if (pColl) { *enc = pColl->enc; *ptype = pColl->type; *plen = (pColl->zName != 0) ? strlen(pColl->zName) : 0; return pColl->zName; } return NULL; } __declspec(dllexport) const char * WINAPI sqlite3_column_database_name_interop(sqlite3_stmt *stmt, int iCol, int *plen) { const char *pval = sqlite3_column_database_name(stmt, iCol); *plen = (pval != 0) ? strlen(pval) : 0; return pval; ................................................................................ n = sqlite3_table_column_metadata(db, zDbName, zTableName, zColumnName, pzDataType, pzCollSeq, pNotNull, pPrimaryKey, pAutoinc); *pdtLen = (*pzDataType != 0) ? strlen(*pzDataType) : 0; *pcsLen = (*pzCollSeq != 0) ? strlen(*pzCollSeq) : 0; return n; } __declspec(dllexport) int WINAPI sqlite3_index_column_info_interop(sqlite3 *db, const char *zDb, const char *zIndexName, const char *zColumnName, int *sortOrder, int *onError, char **pzColl, int *plen) { Index *pIdx; Table *pTab; char *zErrMsg = 0; int n; pIdx = sqlite3FindIndex(db, zIndexName, zDb); ................................................................................ return SQLITE_OK; } } return SQLITE_ERROR; } __declspec(dllexport) int WINAPI sqlite3_table_cursor(sqlite3_stmt *pstmt, int iDb, Pgno tableRootPage) { Vdbe *p = (Vdbe *)pstmt; sqlite3 *db = (p == NULL) ? NULL : p->db; int n; int ret = -1; ................................................................................ break; } sqlite3_mutex_leave(db->mutex); return ret; } #endif // SQLITE_OS_WIN |
Changes to SQLite.Interop/merge.h.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 |
// This code was automatically generated from assembly
// C:\Src\SQLite.NET\System.Data.SQLite\bin\CompactFramework\System.Data.SQLite.dll
#include <windef.h>
#pragma data_seg(push,clrseg,".clr")
#pragma comment(linker, "/SECTION:.clr,ER")
char __ph[138928] = {0}; // The number of bytes to reserve
#pragma data_seg(pop,clrseg)
typedef BOOL (WINAPI *DLLMAIN)(HANDLE, DWORD, LPVOID);
typedef struct EXTRA_STUFF
{
DWORD dwNativeEntryPoint;
} EXTRA_STUFF, *LPEXTRA_STUFF;
|
| |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 |
// This code was automatically generated from assembly
// C:\Src\SQLite.NET\System.Data.SQLite\bin\CompactFramework\System.Data.SQLite.dll
#include <windef.h>
#pragma data_seg(push,clrseg,".clr")
#pragma comment(linker, "/SECTION:.clr,ER")
char __ph[143492] = {0}; // The number of bytes to reserve
#pragma data_seg(pop,clrseg)
typedef BOOL (WINAPI *DLLMAIN)(HANDLE, DWORD, LPVOID);
typedef struct EXTRA_STUFF
{
DWORD dwNativeEntryPoint;
} EXTRA_STUFF, *LPEXTRA_STUFF;
|
Changes to SQLite.Interop/merge_full.h.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 |
// This code was automatically generated from assembly
// C:\Src\SQLite.NET\System.Data.SQLite\bin\System.Data.SQLite.dll
#include <windef.h>
#pragma data_seg(push,clrseg,".clr")
#pragma comment(linker, "/SECTION:.clr,ER")
char __ph[151584] = {0}; // The number of bytes to reserve
#pragma data_seg(pop,clrseg)
typedef BOOL (WINAPI *DLLMAIN)(HANDLE, DWORD, LPVOID);
typedef struct EXTRA_STUFF
{
DWORD dwNativeEntryPoint;
} EXTRA_STUFF, *LPEXTRA_STUFF;
|
| |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 |
// This code was automatically generated from assembly
// C:\Src\SQLite.NET\System.Data.SQLite\bin\System.Data.SQLite.dll
#include <windef.h>
#pragma data_seg(push,clrseg,".clr")
#pragma comment(linker, "/SECTION:.clr,ER")
char __ph[157228] = {0}; // The number of bytes to reserve
#pragma data_seg(pop,clrseg)
typedef BOOL (WINAPI *DLLMAIN)(HANDLE, DWORD, LPVOID);
typedef struct EXTRA_STUFF
{
DWORD dwNativeEntryPoint;
} EXTRA_STUFF, *LPEXTRA_STUFF;
|
Changes to SQLite.Interop/src/sqlite3.c.
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6451 .... 6456 6457 6458 6459 6460 6461 6462 6463 6464 6465 6466 6467 6468 6469 6470 .... 6474 6475 6476 6477 6478 6479 6480 6481 6482 6483 6484 6485 6486 6487 6488 .... 6500 6501 6502 6503 6504 6505 6506 6507 6508 6509 6510 6511 6512 6513 6514 6515 6516 6517 6518 6519 6520 .... 6522 6523 6524 6525 6526 6527 6528 6529 6530 6531 6532 6533 6534 6535 6536 6537 6538 6539 6540 6541 6542 6543 6544 6545 6546 6547 6548 6549 6550 6551 6552 6553 6554 6555 6556 6557 6558 6559 6560 6561 6562 6563 6564 6565 6566 6567 6568 6569 6570 6571 6572 6573 6574 6575 .... 6594 6595 6596 6597 6598 6599 6600 6601 6602 6603 6604 6605 6606 6607 6608 .... 7056 7057 7058 7059 7060 7061 7062 7063 7064 7065 7066 7067 7068 7069 .... 7074 7075 7076 7077 7078 7079 7080 7081 7082 7083 7084 7085 7086 7087 .... 7111 7112 7113 7114 7115 7116 7117 7118 7119 7120 7121 7122 7123 7124 7125 .... 7337 7338 7339 7340 7341 7342 7343 7344 7345 7346 7347 7348 7349 7350 7351 .... 7679 7680 7681 7682 7683 7684 7685 7686 7687 7688 7689 7690 7691 7692 7693 .... 7726 7727 7728 7729 7730 7731 7732 7733 7734 7735 7736 7737 7738 7739 7740 .... 7818 7819 7820 7821 7822 7823 7824 7825 7826 7827 7828 7829 7830 7831 7832 .... 7880 7881 7882 7883 7884 7885 7886 7887 7888 7889 7890 7891 7892 7893 7894 .... 8162 8163 8164 8165 8166 8167 8168 8169 8170 8171 8172 8173 8174 8175 8176 .... 8304 8305 8306 8307 8308 8309 8310 8311 8312 8313 8314 8315 8316 8317 .... 8383 8384 8385 8386 8387 8388 8389 8390 8391 8392 8393 8394 8395 8396 .... 8622 8623 8624 8625 8626 8627 8628 8629 8630 8631 8632 8633 8634 8635 .... 9499 9500 9501 9502 9503 9504 9505 9506 9507 9508 9509 9510 9511 9512 9513 9514 9515 9516 .... 9530 9531 9532 9533 9534 9535 9536 9537 9538 9539 9540 9541 9542 9543 .... 9544 9545 9546 9547 9548 9549 9550 9551 9552 9553 9554 9555 9556 9557 .... 9583 9584 9585 9586 9587 9588 9589 9590 9591 9592 9593 9594 9595 9596 9597 9598 9599 9600 9601 9602 9603 9604 9605 9606 9607 9608 9609 9610 9611 .... 9617 9618 9619 9620 9621 9622 9623 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11792 11793 11794 11795 11796 11797 11798 11799 11800 11801 11802 11803 11804 11805 11806 11807 11808 11809 11810 11811 11812 11813 ..... 11827 11828 11829 11830 11831 11832 11833 11834 11835 11836 11837 11838 11839 11840 11841 ..... 11919 11920 11921 11922 11923 11924 11925 11926 11927 11928 11929 11930 11931 11932 11933 11934 11935 11936 11937 11938 11939 11940 ..... 12004 12005 12006 12007 12008 12009 12010 12011 12012 12013 12014 12015 12016 12017 12018 12019 12020 12021 12022 ..... 12041 12042 12043 12044 12045 12046 12047 12048 12049 12050 12051 12052 12053 12054 ..... 12078 12079 12080 12081 12082 12083 12084 12085 12086 12087 12088 12089 12090 12091 ..... 12110 12111 12112 12113 12114 12115 12116 12117 12118 12119 12120 12121 12122 12123 12124 12125 12126 12127 12128 12129 12130 12131 12132 12133 12134 12135 12136 12137 12138 12139 ..... 12196 12197 12198 12199 12200 12201 12202 12203 12204 12205 12206 12207 12208 12209 12210 12211 12212 12213 12214 12215 12216 12217 12218 12219 12220 12221 12222 12223 12224 12225 12226 12227 ..... 12248 12249 12250 12251 12252 12253 12254 12255 12256 12257 12258 12259 12260 12261 12262 ..... 12362 12363 12364 12365 12366 12367 12368 12369 12370 12371 12372 12373 12374 12375 12376 ..... 12693 12694 12695 12696 12697 12698 12699 12700 12701 12702 12703 12704 12705 12706 ..... 12716 12717 12718 12719 12720 12721 12722 12723 12724 12725 12726 12727 12728 12729 12730 12731 12732 12733 12734 12735 12736 12737 12738 12739 12740 12741 12742 ..... 12760 12761 12762 12763 12764 12765 12766 12767 12768 12769 12770 12771 12772 12773 12774 12775 12776 12777 12778 12779 12780 ..... 12929 12930 12931 12932 12933 12934 12935 12936 12937 12938 12939 12940 12941 12942 12943 ..... 13420 13421 13422 13423 13424 13425 13426 13427 13428 13429 13430 13431 13432 13433 ..... 13442 13443 13444 13445 13446 13447 13448 13449 13450 13451 13452 13453 13454 13455 13456 ..... 13709 13710 13711 13712 13713 13714 13715 13716 13717 13718 13719 13720 13721 13722 13723 ..... 13984 13985 13986 13987 13988 13989 13990 13991 13992 13993 13994 13995 13996 13997 13998 ..... 14311 14312 14313 14314 14315 14316 14317 14318 14319 14320 14321 14322 14323 14324 14325 ..... 14558 14559 14560 14561 14562 14563 14564 14565 14566 14567 14568 14569 14570 14571 14572 ..... 14655 14656 14657 14658 14659 14660 14661 14662 14663 14664 14665 14666 14667 14668 14669 14670 14671 14672 14673 14674 14675 14676 14677 14678 14679 14680 14681 14682 ..... 14767 14768 14769 14770 14771 14772 14773 14774 14775 14776 14777 14778 14779 14780 14781 ..... 14846 14847 14848 14849 14850 14851 14852 14853 14854 14855 14856 14857 14858 14859 14860 14861 14862 14863 14864 14865 14866 14867 14868 14869 14870 14871 ..... 14932 14933 14934 14935 14936 14937 14938 14939 14940 14941 14942 14943 14944 14945 14946 14947 14948 14949 14950 14951 14952 14953 14954 ..... 14983 14984 14985 14986 14987 14988 14989 14990 14991 14992 14993 14994 14995 14996 14997 14998 14999 15000 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15970 15971 15972 15973 15974 15975 15976 15977 15978 15979 15980 15981 15982 15983 15984 ..... 15995 15996 15997 15998 15999 16000 16001 16002 16003 16004 16005 16006 16007 16008 16009 ..... 16011 16012 16013 16014 16015 16016 16017 16018 16019 16020 16021 16022 16023 16024 16025 16026 16027 16028 16029 16030 16031 16032 16033 16034 ..... 16039 16040 16041 16042 16043 16044 16045 16046 16047 16048 16049 16050 16051 16052 ..... 16059 16060 16061 16062 16063 16064 16065 16066 16067 16068 16069 16070 16071 16072 ..... 16156 16157 16158 16159 16160 16161 16162 16163 16164 16165 16166 16167 16168 16169 16170 ..... 16277 16278 16279 16280 16281 16282 16283 16284 16285 16286 16287 16288 16289 16290 16291 ..... 16319 16320 16321 16322 16323 16324 16325 16326 16327 16328 16329 16330 16331 16332 16333 ..... 16549 16550 16551 16552 16553 16554 16555 16556 16557 16558 16559 16560 16561 16562 ..... 16621 16622 16623 16624 16625 16626 16627 16628 16629 16630 16631 16632 16633 16634 16635 ..... 16694 16695 16696 16697 16698 16699 16700 16701 16702 16703 16704 16705 16706 16707 16708 ..... 16710 16711 16712 16713 16714 16715 16716 16717 16718 16719 16720 16721 16722 16723 16724 ..... 16738 16739 16740 16741 16742 16743 16744 16745 16746 16747 16748 16749 16750 16751 16752 ..... 16869 16870 16871 16872 16873 16874 16875 16876 16877 16878 16879 16880 16881 16882 16883 16884 16885 16886 16887 16888 16889 16890 16891 16892 16893 16894 16895 16896 16897 16898 16899 16900 ..... 16983 16984 16985 16986 16987 16988 16989 16990 16991 16992 16993 16994 16995 16996 16997 16998 16999 17000 17001 17002 17003 17004 ..... 17256 17257 17258 17259 17260 17261 17262 17263 17264 17265 17266 17267 17268 17269 17270 17271 17272 17273 17274 17275 17276 17277 17278 17279 17280 17281 17282 17283 17284 17285 ..... 17287 17288 17289 17290 17291 17292 17293 17294 17295 17296 17297 17298 17299 17300 17301 17302 17303 17304 17305 ..... 17325 17326 17327 17328 17329 17330 17331 17332 17333 17334 17335 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24450 24451 24452 24453 24454 24455 24456 ..... 24489 24490 24491 24492 24493 24494 24495 24496 24497 24498 24499 24500 24501 24502 24503 24504 24505 24506 24507 24508 24509 24510 24511 24512 24513 24514 24515 24516 24517 24518 24519 24520 24521 24522 24523 24524 24525 24526 24527 24528 24529 24530 24531 24532 24533 24534 24535 24536 24537 24538 24539 ..... 24546 24547 24548 24549 24550 24551 24552 24553 24554 24555 24556 24557 24558 24559 24560 24561 24562 24563 24564 24565 24566 24567 24568 24569 24570 ..... 24650 24651 24652 24653 24654 24655 24656 24657 24658 24659 24660 24661 24662 24663 24664 24665 24666 24667 24668 24669 24670 24671 24672 24673 24674 24675 24676 24677 24678 24679 24680 24681 24682 24683 24684 24685 24686 24687 24688 24689 24690 24691 ..... 24761 24762 24763 24764 24765 24766 24767 24768 24769 24770 24771 24772 24773 24774 24775 24776 24777 24778 24779 24780 24781 24782 24783 24784 24785 24786 24787 24788 24789 24790 ..... 24849 24850 24851 24852 24853 24854 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/****************************************************************************** ** This file is an amalgamation of many separate C source files from SQLite ** version 3.6.0. By combining all the individual C code files into this ** single large file, the entire code can be compiled as a one translation ** unit. This allows many compilers to do optimizations that would not be ** possible if the files were compiled separately. Performance improvements ** of 5% are more are commonly seen when SQLite is compiled as a single ** translation unit. ** ** This file is all you need to compile SQLite. To use SQLite in other ** programs, you need this file and the "sqlite3.h" header file that defines ** the programming interface to the SQLite library. (If you do not have ** the "sqlite3.h" header file at hand, you will find a copy in the first ** 6139 lines past this header comment.) Additional code files may be ** needed if you want a wrapper to interface SQLite with your choice of ** programming language. The code for the "sqlite3" command-line shell ** is also in a separate file. This file contains only code for the core ** SQLite library. ** ** This amalgamation was generated on 2008-07-16 14:52:32 UTC. */ #define SQLITE_CORE 1 #define SQLITE_AMALGAMATION 1 #ifndef SQLITE_PRIVATE # define SQLITE_PRIVATE static #endif #ifndef SQLITE_API ................................................................................ ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** Internal interface definitions for SQLite. ** ** @(#) $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef _SQLITEINT_H_ #define _SQLITEINT_H_ /* ** Include the configuration header output by 'configure' if we're using the ** autoconf-based build ................................................................................ ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** ** This file defines various limits of what SQLite can process. ** ** @(#) $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** The maximum length of a TEXT or BLOB in bytes. This also ** limits the size of a row in a table or index. ** ** The hard limit is the ability of a 32-bit signed integer ................................................................................ #pragma warn -ccc /* Condition is always true or false */ #pragma warn -aus /* Assigned value is never used */ #pragma warn -csu /* Comparing signed and unsigned */ #pragma warn -spa /* Suspicous pointer arithmetic */ #endif /* Needed for various definitions... */ #define _GNU_SOURCE /* ** Include standard header files as necessary */ #ifdef HAVE_STDINT_H #include <stdint.h> #endif ................................................................................ ** on how SQLite interfaces are suppose to operate. ** ** The name of this file under configuration management is "sqlite.h.in". ** The makefile makes some minor changes to this file (such as inserting ** the version number) and changes its name to "sqlite3.h" as ** part of the build process. ** ** @(#) $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef _SQLITE3_H_ #define _SQLITE3_H_ #include <stdarg.h> /* Needed for the definition of va_list */ /* ** Make sure we can call this stuff from C++. ................................................................................ # undef SQLITE_VERSION #endif #ifdef SQLITE_VERSION_NUMBER # undef SQLITE_VERSION_NUMBER #endif /* ** CAPI3REF: Compile-Time Library Version Numbers {F10010} ** ** The SQLITE_VERSION and SQLITE_VERSION_NUMBER #defines in ** the sqlite3.h file specify the version of SQLite with which ** that header file is associated. ** ** The "version" of SQLite is a string of the form "X.Y.Z". ** The phrase "alpha" or "beta" might be appended after the Z. ................................................................................ ** The Z value is the release number and is incremented with ** each release but resets back to 0 whenever Y is incremented. ** ** See also: [sqlite3_libversion()] and [sqlite3_libversion_number()]. ** ** INVARIANTS: ** ** {F10011} The SQLITE_VERSION #define in the sqlite3.h header file shall ** evaluate to a string literal that is the SQLite version ** with which the header file is associated. ** ** {F10014} The SQLITE_VERSION_NUMBER #define shall resolve to an integer ** with the value (X*1000000 + Y*1000 + Z) where X, Y, and Z ** are the major version, minor version, and release number. */ #define SQLITE_VERSION "3.6.0" #define SQLITE_VERSION_NUMBER 3006000 /* ** CAPI3REF: Run-Time Library Version Numbers {F10020} ** KEYWORDS: sqlite3_version ** ** These features provide the same information as the [SQLITE_VERSION] ** and [SQLITE_VERSION_NUMBER] #defines in the header, but are associated ** with the library instead of the header file. Cautious programmers might ** include a check in their application to verify that ** sqlite3_libversion_number() always returns the value ................................................................................ ** The sqlite3_libversion() function returns the same information as is ** in the sqlite3_version[] string constant. The function is provided ** for use in DLLs since DLL users usually do not have direct access to string ** constants within the DLL. ** ** INVARIANTS: ** ** {F10021} The [sqlite3_libversion_number()] interface shall return ** an integer equal to [SQLITE_VERSION_NUMBER]. ** ** {F10022} The [sqlite3_version] string constant shall contain ** the text of the [SQLITE_VERSION] string. ** ** {F10023} The [sqlite3_libversion()] function shall return ** a pointer to the [sqlite3_version] string constant. */ SQLITE_API const char sqlite3_version[]; SQLITE_API const char *sqlite3_libversion(void); SQLITE_API int sqlite3_libversion_number(void); /* ** CAPI3REF: Test To See If The Library Is Threadsafe {F10100} ** ** SQLite can be compiled with or without mutexes. When ** the [SQLITE_THREADSAFE] C preprocessor macro is true, mutexes ** are enabled and SQLite is threadsafe. When that macro is false, ** the mutexes are omitted. Without the mutexes, it is not safe ** to use SQLite concurrently from more than one thread. ** ................................................................................ ** with the verbs [SQLITE_CONFIG_SINGLETHREAD], [SQLITE_CONFIG_MULTITHREAD], ** or [SQLITE_CONFIG_MUTEX]. The return value of this function shows ** only the default compile-time setting, not any run-time changes ** to that setting. ** ** INVARIANTS: ** ** {F10101} The [sqlite3_threadsafe()] function shall return nonzero if ** SQLite was compiled with the its mutexes enabled by default ** or zero if SQLite was compiled such that mutexes are ** permanently disabled. ** ** {F10102} The value returned by the [sqlite3_threadsafe()] function ** shall not change when mutex setting are modified at ** runtime using the [sqlite3_config()] interface and ** especially the [SQLITE_CONFIG_SINGLETHREAD], ** [SQLITE_CONFIG_MULTITHREAD], [SQLITE_CONFIG_SERIALIZED], ** and [SQLITE_CONFIG_MUTEX] verbs. */ SQLITE_API int sqlite3_threadsafe(void); /* ** CAPI3REF: Database Connection Handle {F12000} ** KEYWORDS: {database connection} {database connections} ** ** Each open SQLite database is represented by a pointer to an instance of ** the opaque structure named "sqlite3". It is useful to think of an sqlite3 ** pointer as an object. The [sqlite3_open()], [sqlite3_open16()], and ** [sqlite3_open_v2()] interfaces are its constructors, and [sqlite3_close()] ** is its destructor. There are many other interfaces (such as ................................................................................ ** [sqlite3_prepare_v2()], [sqlite3_create_function()], and ** [sqlite3_busy_timeout()] to name but three) that are methods on an ** sqlite3 object. */ typedef struct sqlite3 sqlite3; /* ** CAPI3REF: 64-Bit Integer Types {F10200} ** KEYWORDS: sqlite_int64 sqlite_uint64 ** ** Because there is no cross-platform way to specify 64-bit integer types ** SQLite includes typedefs for 64-bit signed and unsigned integers. ** ** The sqlite3_int64 and sqlite3_uint64 are the preferred type definitions. ** The sqlite_int64 and sqlite_uint64 types are supported for backwards ** compatibility only. ** ** INVARIANTS: ** ** {F10201} The [sqlite_int64] and [sqlite3_int64] type shall specify ** a 64-bit signed integer. ** ** {F10202} The [sqlite_uint64] and [sqlite3_uint64] type shall specify ** a 64-bit unsigned integer. */ #ifdef SQLITE_INT64_TYPE typedef SQLITE_INT64_TYPE sqlite_int64; typedef unsigned SQLITE_INT64_TYPE sqlite_uint64; #elif defined(_MSC_VER) || defined(__BORLANDC__) typedef __int64 sqlite_int64; ................................................................................ ** substitute integer for floating-point. */ #ifdef SQLITE_OMIT_FLOATING_POINT # define double sqlite3_int64 #endif /* ** CAPI3REF: Closing A Database Connection {F12010} ** ** This routine is the destructor for the [sqlite3] object. ** ** Applications should [sqlite3_finalize | finalize] all [prepared statements] ** and [sqlite3_blob_close | close] all [BLOB handles] associated with ** the [sqlite3] object prior to attempting to close the object. ** The [sqlite3_next_stmt()] interface can be used to locate all ................................................................................ ** </pre></blockquote> ** ** If [sqlite3_close()] is invoked while a transaction is open, ** the transaction is automatically rolled back. ** ** INVARIANTS: ** ** {F12011} A successful call to [sqlite3_close(C)] shall destroy the ** [database connection] object C. ** ** {F12012} A successful call to [sqlite3_close(C)] shall return SQLITE_OK. ** ** {F12013} A successful call to [sqlite3_close(C)] shall release all ** memory and system resources associated with [database connection] ** C. ** ** {F12014} A call to [sqlite3_close(C)] on a [database connection] C that ** has one or more open [prepared statements] shall fail with ** an [SQLITE_BUSY] error code. ** ** {F12015} A call to [sqlite3_close(C)] where C is a NULL pointer shall ** return SQLITE_OK. ** ** {F12019} When [sqlite3_close(C)] is invoked on a [database connection] C ** that has a pending transaction, the transaction shall be ** rolled back. ** ** LIMITATIONS: ** ** {A12016} The C parameter to [sqlite3_close(C)] must be either a NULL ** pointer or an [sqlite3] object pointer previously obtained ** from [sqlite3_open()], [sqlite3_open16()], or ** [sqlite3_open_v2()], and not previously closed. */ SQLITE_API int sqlite3_close(sqlite3 *); /* ** The type for a callback function. ** This is legacy and deprecated. It is included for historical ** compatibility and is not documented. */ typedef int (*sqlite3_callback)(void*,int,char**, char**); /* ** CAPI3REF: One-Step Query Execution Interface {F12100} ** ** The sqlite3_exec() interface is a convenient way of running one or more ** SQL statements without having to write a lot of C code. The UTF-8 encoded ** SQL statements are passed in as the second parameter to sqlite3_exec(). ** The statements are evaluated one by one until either an error or ** an interrupt is encountered, or until they are all done. The 3rd parameter ** is an optional callback that is invoked once for each row of any query ................................................................................ ** The sqlite3_exec() interface is implemented in terms of ** [sqlite3_prepare_v2()], [sqlite3_step()], and [sqlite3_finalize()]. ** The sqlite3_exec() routine does nothing to the database that cannot be done ** by [sqlite3_prepare_v2()], [sqlite3_step()], and [sqlite3_finalize()]. ** ** INVARIANTS: ** ** {F12101} A successful invocation of [sqlite3_exec(D,S,C,A,E)] ** shall sequentially evaluate all of the UTF-8 encoded, ** semicolon-separated SQL statements in the zero-terminated ** string S within the context of the [database connection] D. ** ** {F12102} If the S parameter to [sqlite3_exec(D,S,C,A,E)] is NULL then ** the actions of the interface shall be the same as if the ** S parameter were an empty string. ** ** {F12104} The return value of [sqlite3_exec()] shall be [SQLITE_OK] if all ** SQL statements run successfully and to completion. ** ** {F12105} The return value of [sqlite3_exec()] shall be an appropriate ** non-zero [error code] if any SQL statement fails. ** ** {F12107} If one or more of the SQL statements handed to [sqlite3_exec()] ** return results and the 3rd parameter is not NULL, then ** the callback function specified by the 3rd parameter shall be ** invoked once for each row of result. ** ** {F12110} If the callback returns a non-zero value then [sqlite3_exec()] ** shall abort the SQL statement it is currently evaluating, ** skip all subsequent SQL statements, and return [SQLITE_ABORT]. ** ** {F12113} The [sqlite3_exec()] routine shall pass its 4th parameter through ** as the 1st parameter of the callback. ** ** {F12116} The [sqlite3_exec()] routine shall set the 2nd parameter of its ** callback to be the number of columns in the current row of ** result. ** ** {F12119} The [sqlite3_exec()] routine shall set the 3rd parameter of its ** callback to be an array of pointers to strings holding the ** values for each column in the current result set row as ** obtained from [sqlite3_column_text()]. ** ** {F12122} The [sqlite3_exec()] routine shall set the 4th parameter of its ** callback to be an array of pointers to strings holding the ** names of result columns as obtained from [sqlite3_column_name()]. ** ** {F12125} If the 3rd parameter to [sqlite3_exec()] is NULL then ** [sqlite3_exec()] shall silently discard query results. ** ** {F12131} If an error occurs while parsing or evaluating any of the SQL ** statements in the S parameter of [sqlite3_exec(D,S,C,A,E)] and if ** the E parameter is not NULL, then [sqlite3_exec()] shall store ** in *E an appropriate error message written into memory obtained ** from [sqlite3_malloc()]. ** ** {F12134} The [sqlite3_exec(D,S,C,A,E)] routine shall set the value of ** *E to NULL if E is not NULL and there are no errors. ** ** {F12137} The [sqlite3_exec(D,S,C,A,E)] function shall set the [error code] ** and message accessible via [sqlite3_errcode()], ** [sqlite3_errmsg()], and [sqlite3_errmsg16()]. ** ** {F12138} If the S parameter to [sqlite3_exec(D,S,C,A,E)] is NULL or an ** empty string or contains nothing other than whitespace, comments, ** and/or semicolons, then results of [sqlite3_errcode()], ** [sqlite3_errmsg()], and [sqlite3_errmsg16()] ** shall reset to indicate no errors. ** ** LIMITATIONS: ** ** {A12141} The first parameter to [sqlite3_exec()] must be an valid and open ** [database connection]. ** ** {A12142} The database connection must not be closed while ** [sqlite3_exec()] is running. ** ................................................................................ const char *sql, /* SQL to be evaluated */ int (*callback)(void*,int,char**,char**), /* Callback function */ void *, /* 1st argument to callback */ char **errmsg /* Error msg written here */ ); /* ** CAPI3REF: Result Codes {F10210} ** KEYWORDS: SQLITE_OK {error code} {error codes} ** KEYWORDS: {result code} {result codes} ** ** Many SQLite functions return an integer result code from the set shown ** here in order to indicates success or failure. ** ** New error codes may be added in future versions of SQLite. ................................................................................ #define SQLITE_RANGE 25 /* 2nd parameter to sqlite3_bind out of range */ #define SQLITE_NOTADB 26 /* File opened that is not a database file */ #define SQLITE_ROW 100 /* sqlite3_step() has another row ready */ #define SQLITE_DONE 101 /* sqlite3_step() has finished executing */ /* end-of-error-codes */ /* ** CAPI3REF: Extended Result Codes {F10220} ** KEYWORDS: {extended error code} {extended error codes} ** KEYWORDS: {extended result code} {extended result codes} ** ** In its default configuration, SQLite API routines return one of 26 integer ** [SQLITE_OK | result codes]. However, experience has shown that many of ** these result codes are too coarse-grained. They do not provide as ** much information about problems as programmers might like. In an effort to ................................................................................ ** to see new result codes in future releases of SQLite. ** ** The SQLITE_OK result code will never be extended. It will always ** be exactly zero. ** ** INVARIANTS: ** ** {F10223} The symbolic name for an extended result code shall contains ** a related primary result code as a prefix. ** ** {F10224} Primary result code names shall contain a single "_" character. ** ** {F10225} Extended result code names shall contain two or more "_" characters. ** ** {F10226} The numeric value of an extended result code shall contain the ** numeric value of its corresponding primary result code in ** its least significant 8 bits. */ #define SQLITE_IOERR_READ (SQLITE_IOERR | (1<<8)) #define SQLITE_IOERR_SHORT_READ (SQLITE_IOERR | (2<<8)) #define SQLITE_IOERR_WRITE (SQLITE_IOERR | (3<<8)) #define SQLITE_IOERR_FSYNC (SQLITE_IOERR | (4<<8)) ................................................................................ #define SQLITE_IOERR_DELETE (SQLITE_IOERR | (10<<8)) #define SQLITE_IOERR_BLOCKED (SQLITE_IOERR | (11<<8)) #define SQLITE_IOERR_NOMEM (SQLITE_IOERR | (12<<8)) #define SQLITE_IOERR_ACCESS (SQLITE_IOERR | (13<<8)) #define SQLITE_IOERR_CHECKRESERVEDLOCK (SQLITE_IOERR | (14<<8)) /* ** CAPI3REF: Flags For File Open Operations {F10230} ** ** These bit values are intended for use in the ** 3rd parameter to the [sqlite3_open_v2()] interface and ** in the 4th parameter to the xOpen method of the ** [sqlite3_vfs] object. */ #define SQLITE_OPEN_READONLY 0x00000001 ................................................................................ #define SQLITE_OPEN_MAIN_JOURNAL 0x00000800 #define SQLITE_OPEN_TEMP_JOURNAL 0x00001000 #define SQLITE_OPEN_SUBJOURNAL 0x00002000 #define SQLITE_OPEN_MASTER_JOURNAL 0x00004000 #define SQLITE_OPEN_NOMUTEX 0x00008000 /* ** CAPI3REF: Device Characteristics {F10240} ** ** The xDeviceCapabilities method of the [sqlite3_io_methods] ** object returns an integer which is a vector of the these ** bit values expressing I/O characteristics of the mass storage ** device that holds the file that the [sqlite3_io_methods] ** refers to. ** ................................................................................ #define SQLITE_IOCAP_ATOMIC16K 0x00000040 #define SQLITE_IOCAP_ATOMIC32K 0x00000080 #define SQLITE_IOCAP_ATOMIC64K 0x00000100 #define SQLITE_IOCAP_SAFE_APPEND 0x00000200 #define SQLITE_IOCAP_SEQUENTIAL 0x00000400 /* ** CAPI3REF: File Locking Levels {F10250} ** ** SQLite uses one of these integer values as the second ** argument to calls it makes to the xLock() and xUnlock() methods ** of an [sqlite3_io_methods] object. */ #define SQLITE_LOCK_NONE 0 #define SQLITE_LOCK_SHARED 1 #define SQLITE_LOCK_RESERVED 2 #define SQLITE_LOCK_PENDING 3 #define SQLITE_LOCK_EXCLUSIVE 4 /* ** CAPI3REF: Synchronization Type Flags {F10260} ** ** When SQLite invokes the xSync() method of an ** [sqlite3_io_methods] object it uses a combination of ** these integer values as the second argument. ** ** When the SQLITE_SYNC_DATAONLY flag is used, it means that the ** sync operation only needs to flush data to mass storage. Inode ................................................................................ ** to use Mac OS-X style fullsync instead of fsync(). */ #define SQLITE_SYNC_NORMAL 0x00002 #define SQLITE_SYNC_FULL 0x00003 #define SQLITE_SYNC_DATAONLY 0x00010 /* ** CAPI3REF: OS Interface Open File Handle {F11110} ** ** An [sqlite3_file] object represents an open file in the OS ** interface layer. Individual OS interface implementations will ** want to subclass this object by appending additional fields ** for their own use. The pMethods entry is a pointer to an ** [sqlite3_io_methods] object that defines methods for performing ** I/O operations on the open file. ................................................................................ */ typedef struct sqlite3_file sqlite3_file; struct sqlite3_file { const struct sqlite3_io_methods *pMethods; /* Methods for an open file */ }; /* ** CAPI3REF: OS Interface File Virtual Methods Object {F11120} ** ** Every file opened by the [sqlite3_vfs] xOpen method populates an ** [sqlite3_file] object (or, more commonly, a subclass of the ** [sqlite3_file] object) with a pointer to an instance of this object. ** This object defines the methods used to perform various operations ** against the open file represented by the [sqlite3_file] object. ** ................................................................................ int (*xFileControl)(sqlite3_file*, int op, void *pArg); int (*xSectorSize)(sqlite3_file*); int (*xDeviceCharacteristics)(sqlite3_file*); /* Additional methods may be added in future releases */ }; /* ** CAPI3REF: Standard File Control Opcodes {F11310} ** ** These integer constants are opcodes for the xFileControl method ** of the [sqlite3_io_methods] object and for the [sqlite3_file_control()] ** interface. ** ** The [SQLITE_FCNTL_LOCKSTATE] opcode is used for debugging. This ** opcode causes the xFileControl method to write the current state of ................................................................................ ** into an integer that the pArg argument points to. This capability ** is used during testing and only needs to be supported when SQLITE_TEST ** is defined. */ #define SQLITE_FCNTL_LOCKSTATE 1 /* ** CAPI3REF: Mutex Handle {F17110} ** ** The mutex module within SQLite defines [sqlite3_mutex] to be an ** abstract type for a mutex object. The SQLite core never looks ** at the internal representation of an [sqlite3_mutex]. It only ** deals with pointers to the [sqlite3_mutex] object. ** ** Mutexes are created using [sqlite3_mutex_alloc()]. */ typedef struct sqlite3_mutex sqlite3_mutex; /* ** CAPI3REF: OS Interface Object {F11140} ** ** An instance of the sqlite3_vfs object defines the interface between ** the SQLite core and the underlying operating system. The "vfs" ** in the name of the object stands for "virtual file system". ** ** The value of the iVersion field is initially 1 but may be larger in ** future versions of SQLite. Additional fields may be appended to this ................................................................................ ** or modify this field while holding a particular static mutex. ** The application should never modify anything within the sqlite3_vfs ** object once the object has been registered. ** ** The zName field holds the name of the VFS module. The name must ** be unique across all VFS modules. ** ** {F11141} SQLite will guarantee that the zFilename parameter to xOpen ** is either a NULL pointer or string obtained ** from xFullPathname(). SQLite further guarantees that ** the string will be valid and unchanged until xClose() is ** called. {END} Becasue of the previous sentense, ** the [sqlite3_file] can safely store a pointer to the ** filename if it needs to remember the filename for some reason. ** If the zFilename parameter is xOpen is a NULL pointer then xOpen ** must invite its own temporary name for the file. Whenever the ** xFilename parameter is NULL it will also be the case that the ** flags parameter will include [SQLITE_OPEN_DELETEONCLOSE]. ** ** {F11142} The flags argument to xOpen() includes all bits set in ** the flags argument to [sqlite3_open_v2()]. Or if [sqlite3_open()] ** or [sqlite3_open16()] is used, then flags includes at least ** [SQLITE_OPEN_READWRITE] | [SQLITE_OPEN_CREATE]. {END} ** If xOpen() opens a file read-only then it sets *pOutFlags to ** include [SQLITE_OPEN_READONLY]. Other bits in *pOutFlags may be set. ** ** {F11143} SQLite will also add one of the following flags to the xOpen() ** call, depending on the object being opened: ** ** <ul> ** <li> [SQLITE_OPEN_MAIN_DB] ** <li> [SQLITE_OPEN_MAIN_JOURNAL] ** <li> [SQLITE_OPEN_TEMP_DB] ** <li> [SQLITE_OPEN_TEMP_JOURNAL] ................................................................................ ** SQLite might also add one of the following flags to the xOpen method: ** ** <ul> ** <li> [SQLITE_OPEN_DELETEONCLOSE] ** <li> [SQLITE_OPEN_EXCLUSIVE] ** </ul> ** ** {F11145} The [SQLITE_OPEN_DELETEONCLOSE] flag means the file should be ** deleted when it is closed. {F11146} The [SQLITE_OPEN_DELETEONCLOSE] ** will be set for TEMP databases, journals and for subjournals. ** ** {F11147} The [SQLITE_OPEN_EXCLUSIVE] flag means the file should be opened ** for exclusive access. This flag is set for all files except ** for the main database file. ** ** {F11148} At least szOsFile bytes of memory are allocated by SQLite ** to hold the [sqlite3_file] structure passed as the third ** argument to xOpen. {END} The xOpen method does not have to ** allocate the structure; it should just fill it in. ** ** {F11149} The flags argument to xAccess() may be [SQLITE_ACCESS_EXISTS] ** to test for the existence of a file, or [SQLITE_ACCESS_READWRITE] to ** test whether a file is readable and writable, or [SQLITE_ACCESS_READ] ** to test whether a file is at least readable. {END} The file can be a ** directory. ** ** {F11150} SQLite will always allocate at least mxPathname+1 bytes for the ** output buffer xFullPathname. {F11151} The exact size of the output buffer ** is also passed as a parameter to both methods. {END} If the output buffer ** is not large enough, [SQLITE_CANTOPEN] should be returned. Since this is ** handled as a fatal error by SQLite, vfs implementations should endeavor ** to prevent this by setting mxPathname to a sufficiently large value. ** ** The xRandomness(), xSleep(), and xCurrentTime() interfaces ** are not strictly a part of the filesystem, but they are ................................................................................ int (*xCurrentTime)(sqlite3_vfs*, double*); int (*xGetLastError)(sqlite3_vfs*, int, char *); /* New fields may be appended in figure versions. The iVersion ** value will increment whenever this happens. */ }; /* ** CAPI3REF: Flags for the xAccess VFS method {F11190} ** ** {F11191} These integer constants can be used as the third parameter to ** the xAccess method of an [sqlite3_vfs] object. {END} They determine ** what kind of permissions the xAccess method is looking for. ** {F11192} With SQLITE_ACCESS_EXISTS, the xAccess method ** simply checks whether the file exists. ** {F11193} With SQLITE_ACCESS_READWRITE, the xAccess method ** checks whether the file is both readable and writable. ** {F11194} With SQLITE_ACCESS_READ, the xAccess method ** checks whether the file is readable. */ #define SQLITE_ACCESS_EXISTS 0 #define SQLITE_ACCESS_READWRITE 1 #define SQLITE_ACCESS_READ 2 /* ** CAPI3REF: Initialize The SQLite Library {F10130} ** ** The sqlite3_initialize() routine initializes the ** SQLite library. The sqlite3_shutdown() routine ** deallocates any resources that were allocated by sqlite3_initialize(). ** ** A call to sqlite3_initialize() is an "effective" call if it is ** the first time sqlite3_initialize() is invoked during the lifetime of ................................................................................ */ SQLITE_API int sqlite3_initialize(void); SQLITE_API int sqlite3_shutdown(void); SQLITE_API int sqlite3_os_init(void); SQLITE_API int sqlite3_os_end(void); /* ** CAPI3REF: Configuring The SQLite Library {F10145} ** ** The sqlite3_config() interface is used to make global configuration ** changes to SQLite in order to tune SQLite to the specific needs of ** the application. The default configuration is recommended for most ** applications and so this routine is usually not necessary. It is ** provided to support rare applications with unusual needs. ** ................................................................................ ** what property of SQLite is to be configured. Subsequent arguments ** vary depending on the [SQLITE_CONFIG_SINGLETHREAD | configuration option] ** in the first argument. ** ** When a configuration option is set, sqlite3_config() returns SQLITE_OK. ** If the option is unknown or SQLite is unable to set the option ** then this routine returns a non-zero [error code]. ** ** The sqlite3_config() interface is considered experimental in that ** new configuration options may be added in future releases and existing ** configuration options may be discontinued or modified. */ SQLITE_API int sqlite3_config(int, ...); /* ** CAPI3REF: Memory Allocation Routines {F10155} ** ** An instance of this object defines the interface between SQLite ** and low-level memory allocation routines. ** ** This object is used in only one place in the SQLite interface. ** A pointer to an instance of this object is the argument to ** [sqlite3_config()] when the configuration option is ................................................................................ int (*xRoundup)(int); /* Round up request size to allocation size */ int (*xInit)(void*); /* Initialize the memory allocator */ void (*xShutdown)(void*); /* Deinitialize the memory allocator */ void *pAppData; /* Argument to xInit() and xShutdown() */ }; /* ** CAPI3REF: Configuration Options {F10160} ** ** These constants are the available integer configuration options that ** can be passed as the first argument to the [sqlite3_config()] interface. ** ** New configuration options may be added in future releases of SQLite. ** Existing configuration options might be discontinued. Applications ** should check the return code from [sqlite3_config()] to make sure that ................................................................................ ** instance of the [sqlite3_mem_methods] structure. The [sqlite3_mem_methods] ** structure is filled with the currently defined memory allocation routines. ** This option can be used to overload the default memory allocation ** routines with a wrapper that simulations memory allocation failure or ** tracks memory usage, for example.</dd> ** ** <dt>SQLITE_CONFIG_MEMSTATUS</dt> ** <dd>This option takes single boolean argument which enables or disables ** the collection of memory allocation statistics. When disabled, the ** following SQLite interfaces become non-operational: ** <ul> ** <li> [sqlite3_memory_used()] ** <li> [sqlite3_memory_highwater()] ** <li> [sqlite3_soft_heap_limit()] ** <li> sqlite3_memory_status() ** </ul> ** </dd> ** ** <dt>SQLITE_CONFIG_SCRATCH</dt> ** <dd>This option specifies a static memory buffer that SQLite can use for ** scratch memory. There are three arguments: A pointer to the memory, the ** size of each scratch buffer (sz), and the number of buffers (N). The sz ** argument must be a multiple of 16. The first ** argument should point to an allocation of at least (sz+4)*N bytes of memory. ** SQLite will use no more than one scratch buffer at once per thread, so ** N should be set to the expected maximum number of threads. The sz ** parameter should be 6 times the size of the largest database page size. ** Scratch buffers are used as part of the btree balance operation. If ** The btree balancer needs additional memory beyond what is provided by ** scratch buffers or if no scratch buffer space is specified, then SQLite ** goes to [sqlite3_malloc()] to obtain the memory it needs.</dd> ** ** <dt>SQLITE_CONFIG_PAGECACHE</dt> ** <dd>This option specifies a static memory buffer that SQLite can use for ** the database page cache. There are three arguments: A pointer to the ** memory, the size of each page buffer (sz), and the number of pages (N). ** The sz argument must be a power of two between 512 and 32768. The first ** argument should point to an allocation of at least (sz+4)*N bytes of memory. ** SQLite will use the memory provided by the first argument to satisfy its ** memory needs for the first N pages that it adds to cache. If additional ** page cache memory is needed beyond what is provided by this option, then ** SQLite goes to [sqlite3_malloc()] for the additional storage space.</dd> ** ** <dt>SQLITE_CONFIG_HEAP</dt> ** <dd>This option specifies a static memory buffer that SQLite will use ** for all of its dynamic memory allocation needs beyond those provided ** for by [SQLITE_CONFIG_SCRATCH] and [SQLITE_CONFIG_PAGECACHE]. ** There are three arguments: A pointer to the memory, the number of ** bytes in the memory buffer, and the minimum allocation size. If ................................................................................ ** <dd>This option takes a single argument which is a pointer to an ** instance of the [sqlite3_mutex_methods] structure. The ** [sqlite3_mutex_methods] ** structure is filled with the currently defined mutex routines. ** This option can be used to overload the default mutex allocation ** routines with a wrapper used to track mutex usage for performance ** profiling or testing, for example.</dd> */ #define SQLITE_CONFIG_SINGLETHREAD 1 /* nil */ #define SQLITE_CONFIG_MULTITHREAD 2 /* nil */ #define SQLITE_CONFIG_SERIALIZED 3 /* nil */ #define SQLITE_CONFIG_MALLOC 4 /* sqlite3_mem_methods* */ #define SQLITE_CONFIG_GETMALLOC 5 /* sqlite3_mem_methods* */ #define SQLITE_CONFIG_SCRATCH 6 /* void*, int sz, int N */ #define SQLITE_CONFIG_PAGECACHE 7 /* void*, int sz, int N */ #define SQLITE_CONFIG_HEAP 8 /* void*, int nByte, int min */ #define SQLITE_CONFIG_MEMSTATUS 9 /* boolean */ #define SQLITE_CONFIG_MUTEX 10 /* sqlite3_mutex_methods* */ #define SQLITE_CONFIG_GETMUTEX 11 /* sqlite3_mutex_methods* */ /* ** CAPI3REF: Enable Or Disable Extended Result Codes {F12200} ** ** The sqlite3_extended_result_codes() routine enables or disables the ** [extended result codes] feature of SQLite. The extended result ** codes are disabled by default for historical compatibility considerations. ** ** INVARIANTS: ** ** {F12201} Each new [database connection] shall have the ** [extended result codes] feature disabled by default. ** ** {F12202} The [sqlite3_extended_result_codes(D,F)] interface shall enable ** [extended result codes] for the [database connection] D ** if the F parameter is true, or disable them if F is false. */ SQLITE_API int sqlite3_extended_result_codes(sqlite3*, int onoff); /* ** CAPI3REF: Last Insert Rowid {F12220} ** ** Each entry in an SQLite table has a unique 64-bit signed ** integer key called the "rowid". The rowid is always available ** as an undeclared column named ROWID, OID, or _ROWID_ as long as those ** names are not also used by explicitly declared columns. If ** the table has a column of type INTEGER PRIMARY KEY then that column ** is another alias for the rowid. ................................................................................ ** the return value of this interface. ** ** For the purposes of this routine, an INSERT is considered to ** be successful even if it is subsequently rolled back. ** ** INVARIANTS: ** ** {F12221} The [sqlite3_last_insert_rowid()] function returns the rowid ** of the most recent successful INSERT performed on the same ** [database connection] and within the same or higher level ** trigger context, or zero if there have been no qualifying inserts. ** ** {F12223} The [sqlite3_last_insert_rowid()] function returns the ** same value when called from the same trigger context ** immediately before and after a ROLLBACK. ** ** LIMITATIONS: ** ** {A12232} If a separate thread performs a new INSERT on the same ** database connection while the [sqlite3_last_insert_rowid()] ** function is running and thus changes the last insert rowid, ** then the value returned by [sqlite3_last_insert_rowid()] is ** unpredictable and might not equal either the old or the new ** last insert rowid. */ SQLITE_API sqlite3_int64 sqlite3_last_insert_rowid(sqlite3*); /* ** CAPI3REF: Count The Number Of Rows Modified {F12240} ** ** This function returns the number of database rows that were changed ** or inserted or deleted by the most recently completed SQL statement ** on the [database connection] specified by the first parameter. ** Only changes that are directly specified by the INSERT, UPDATE, ** or DELETE statement are counted. Auxiliary changes caused by ** triggers are not counted. Use the [sqlite3_total_changes()] function ................................................................................ ** will not be counted by the sqlite3_changes() or [sqlite3_total_changes()] ** functions, regardless of the number of elements that were originally ** in the table. To get an accurate count of the number of rows deleted, use ** "DELETE FROM table WHERE 1" instead. ** ** INVARIANTS: ** ** {F12241} The [sqlite3_changes()] function shall return the number of ** row changes caused by the most recent INSERT, UPDATE, ** or DELETE statement on the same database connection and ** within the same or higher trigger context, or zero if there have ** not been any qualifying row changes. ** ** {F12243} Statements of the form "DELETE FROM tablename" with no ** WHERE clause shall cause subsequent calls to ** [sqlite3_changes()] to return zero, regardless of the ** number of rows originally in the table. ** ** LIMITATIONS: ** ** {A12252} If a separate thread makes changes on the same database connection ** while [sqlite3_changes()] is running then the value returned ** is unpredictable and not meaningful. */ SQLITE_API int sqlite3_changes(sqlite3*); /* ** CAPI3REF: Total Number Of Rows Modified {F12260} ** ** This function returns the number of row changes caused by INSERT, ** UPDATE or DELETE statements since the [database connection] was opened. ** The count includes all changes from all trigger contexts. However, ** the count does not include changes used to implement REPLACE constraints, ** do rollbacks or ABORT processing, or DROP table processing. ** The changes are counted as soon as the statement that makes them is ................................................................................ ** in the table. To get an accurate count of the number of rows deleted, use ** "DELETE FROM table WHERE 1" instead. ** ** See also the [sqlite3_changes()] interface. ** ** INVARIANTS: ** ** {F12261} The [sqlite3_total_changes()] returns the total number ** of row changes caused by INSERT, UPDATE, and/or DELETE ** statements on the same [database connection], in any ** trigger context, since the database connection was created. ** ** {F12263} Statements of the form "DELETE FROM tablename" with no ** WHERE clause shall not change the value returned ** by [sqlite3_total_changes()]. ** ** LIMITATIONS: ** ** {A12264} If a separate thread makes changes on the same database connection ** while [sqlite3_total_changes()] is running then the value ** returned is unpredictable and not meaningful. */ SQLITE_API int sqlite3_total_changes(sqlite3*); /* ** CAPI3REF: Interrupt A Long-Running Query {F12270} ** ** This function causes any pending database operation to abort and ** return at its earliest opportunity. This routine is typically ** called in response to a user action such as pressing "Cancel" ** or Ctrl-C where the user wants a long query operation to halt ** immediately. ** ................................................................................ ** will be rolled back automatically. ** ** A call to sqlite3_interrupt() has no effect on SQL statements ** that are started after sqlite3_interrupt() returns. ** ** INVARIANTS: ** ** {F12271} The [sqlite3_interrupt()] interface will force all running ** SQL statements associated with the same database connection ** to halt after processing at most one additional row of data. ** ** {F12272} Any SQL statement that is interrupted by [sqlite3_interrupt()] ** will return [SQLITE_INTERRUPT]. ** ** LIMITATIONS: ** ** {A12279} If the database connection closes while [sqlite3_interrupt()] ** is running then bad things will likely happen. */ SQLITE_API void sqlite3_interrupt(sqlite3*); /* ** CAPI3REF: Determine If An SQL Statement Is Complete {F10510} ** ** These routines are useful for command-line input to determine if the ** currently entered text seems to form complete a SQL statement or ** if additional input is needed before sending the text into ** SQLite for parsing. These routines return true if the input string ** appears to be a complete SQL statement. A statement is judged to be ** complete if it ends with a semicolon token and is not a fragment of a ................................................................................ ** embedded) and thus do not count as a statement terminator. ** ** These routines do not parse the SQL statements thus ** will not detect syntactically incorrect SQL. ** ** INVARIANTS: ** ** {F10511} A successful evaluation of [sqlite3_complete()] or ** [sqlite3_complete16()] functions shall ** return a numeric 1 if and only if the last non-whitespace ** token in their input is a semicolon that is not in between ** the BEGIN and END of a CREATE TRIGGER statement. ** ** {F10512} If a memory allocation error occurs during an invocation ** of [sqlite3_complete()] or [sqlite3_complete16()] then the ** routine shall return [SQLITE_NOMEM]. ** ** LIMITATIONS: ** ** {A10512} The input to [sqlite3_complete()] must be a zero-terminated ** UTF-8 string. ** ** {A10513} The input to [sqlite3_complete16()] must be a zero-terminated ** UTF-16 string in native byte order. */ SQLITE_API int sqlite3_complete(const char *sql); SQLITE_API int sqlite3_complete16(const void *sql); /* ** CAPI3REF: Register A Callback To Handle SQLITE_BUSY Errors {F12310} ** ** This routine sets a callback function that might be invoked whenever ** an attempt is made to open a database table that another thread ** or process has locked. ** ** If the busy callback is NULL, then [SQLITE_BUSY] or [SQLITE_IOERR_BLOCKED] ** is returned immediately upon encountering the lock. If the busy callback ................................................................................ ** There can only be a single busy handler defined for each ** [database connection]. Setting a new busy handler clears any ** previously set handler. Note that calling [sqlite3_busy_timeout()] ** will also set or clear the busy handler. ** ** INVARIANTS: ** ** {F12311} The [sqlite3_busy_handler(D,C,A)] function shall replace ** busy callback in the [database connection] D with a new ** a new busy handler C and application data pointer A. ** ** {F12312} Newly created [database connections] shall have a busy ** handler of NULL. ** ** {F12314} When two or more [database connections] share a ** [sqlite3_enable_shared_cache | common cache], ** the busy handler for the database connection currently using ** the cache shall be invoked when the cache encounters a lock. ** ** {F12316} If a busy handler callback returns zero, then the SQLite interface ** that provoked the locking event shall return [SQLITE_BUSY]. ** ** {F12318} SQLite shall invokes the busy handler with two arguments which ** are a copy of the pointer supplied by the 3rd parameter to ** [sqlite3_busy_handler()] and a count of the number of prior ** invocations of the busy handler for the same locking event. ** ** LIMITATIONS: ** ** {A12319} A busy handler must not close the database connection ** or [prepared statement] that invoked the busy handler. */ SQLITE_API int sqlite3_busy_handler(sqlite3*, int(*)(void*,int), void*); /* ** CAPI3REF: Set A Busy Timeout {F12340} ** ** This routine sets a [sqlite3_busy_handler | busy handler] that sleeps ** for a specified amount of time when a table is locked. The handler ** will sleep multiple times until at least "ms" milliseconds of sleeping ** have accumulated. {F12343} After "ms" milliseconds of sleeping, ** the handler returns 0 which causes [sqlite3_step()] to return ** [SQLITE_BUSY] or [SQLITE_IOERR_BLOCKED]. ** ** Calling this routine with an argument less than or equal to zero ** turns off all busy handlers. ** ** There can only be a single busy handler for a particular ** [database connection] any any given moment. If another busy handler ** was defined (using [sqlite3_busy_handler()]) prior to calling ** this routine, that other busy handler is cleared. ** ** INVARIANTS: ** ** {F12341} The [sqlite3_busy_timeout()] function shall override any prior ** [sqlite3_busy_timeout()] or [sqlite3_busy_handler()] setting ** on the same [database connection]. ** ** {F12343} If the 2nd parameter to [sqlite3_busy_timeout()] is less than ** or equal to zero, then the busy handler shall be cleared so that ** all subsequent locking events immediately return [SQLITE_BUSY]. ** ** {F12344} If the 2nd parameter to [sqlite3_busy_timeout()] is a positive ** number N, then a busy handler shall be set that repeatedly calls ** the xSleep() method in the [sqlite3_vfs | VFS interface] until ** either the lock clears or until the cumulative sleep time ** reported back by xSleep() exceeds N milliseconds. */ SQLITE_API int sqlite3_busy_timeout(sqlite3*, int ms); /* ** CAPI3REF: Convenience Routines For Running Queries {F12370} ** ** Definition: A <b>result table</b> is memory data structure created by the ** [sqlite3_get_table()] interface. A result table records the ** complete query results from one or more queries. ** ** The table conceptually has a number of rows and columns. But ** these numbers are not part of the result table itself. These ................................................................................ ** to any internal data structures of SQLite. It uses only the public ** interface defined here. As a consequence, errors that occur in the ** wrapper layer outside of the internal [sqlite3_exec()] call are not ** reflected in subsequent calls to [sqlite3_errcode()] or [sqlite3_errmsg()]. ** ** INVARIANTS: ** ** {F12371} If a [sqlite3_get_table()] fails a memory allocation, then ** it shall free the result table under construction, abort the ** query in process, skip any subsequent queries, set the ** *pazResult output pointer to NULL and return [SQLITE_NOMEM]. ** ** {F12373} If the pnColumn parameter to [sqlite3_get_table()] is not NULL ** then a successful invocation of [sqlite3_get_table()] shall ** write the number of columns in the ** result set of the query into *pnColumn. ** ** {F12374} If the pnRow parameter to [sqlite3_get_table()] is not NULL ** then a successful invocation of [sqlite3_get_table()] shall ** writes the number of rows in the ** result set of the query into *pnRow. ** ** {F12376} A successful invocation of [sqlite3_get_table()] that computes ** N rows of result with C columns per row shall make *pazResult ** point to an array of pointers to (N+1)*C strings where the first ** C strings are column names as obtained from ** [sqlite3_column_name()] and the rest are column result values ** obtained from [sqlite3_column_text()]. ** ** {F12379} The values in the pazResult array returned by [sqlite3_get_table()] ** shall remain valid until cleared by [sqlite3_free_table()]. ** ** {F12382} When an error occurs during evaluation of [sqlite3_get_table()] ** the function shall set *pazResult to NULL, write an error message ** into memory obtained from [sqlite3_malloc()], make ** **pzErrmsg point to that error message, and return a ** appropriate [error code]. */ SQLITE_API int sqlite3_get_table( sqlite3 *db, /* An open database */ ................................................................................ int *pnRow, /* Number of result rows written here */ int *pnColumn, /* Number of result columns written here */ char **pzErrmsg /* Error msg written here */ ); SQLITE_API void sqlite3_free_table(char **result); /* ** CAPI3REF: Formatted String Printing Functions {F17400} ** ** These routines are workalikes of the "printf()" family of functions ** from the standard C library. ** ** The sqlite3_mprintf() and sqlite3_vmprintf() routines write their ** results into memory obtained from [sqlite3_malloc()]. ** The strings returned by these two routines should be ................................................................................ ** ** The "%z" formatting option works exactly like "%s" with the ** addition that after the string has been read and copied into ** the result, [sqlite3_free()] is called on the input string. {END} ** ** INVARIANTS: ** ** {F17403} The [sqlite3_mprintf()] and [sqlite3_vmprintf()] interfaces ** return either pointers to zero-terminated UTF-8 strings held in ** memory obtained from [sqlite3_malloc()] or NULL pointers if ** a call to [sqlite3_malloc()] fails. ** ** {F17406} The [sqlite3_snprintf()] interface writes a zero-terminated ** UTF-8 string into the buffer pointed to by the second parameter ** provided that the first parameter is greater than zero. ** ** {F17407} The [sqlite3_snprintf()] interface does not write slots of ** its output buffer (the second parameter) outside the range ** of 0 through N-1 (where N is the first parameter) ** regardless of the length of the string ** requested by the format specification. */ SQLITE_API char *sqlite3_mprintf(const char*,...); SQLITE_API char *sqlite3_vmprintf(const char*, va_list); SQLITE_API char *sqlite3_snprintf(int,char*,const char*, ...); /* ** CAPI3REF: Memory Allocation Subsystem {F17300} ** ** The SQLite core uses these three routines for all of its own ** internal memory allocation needs. "Core" in the previous sentence ** does not include operating-system specific VFS implementation. The ** Windows VFS uses native malloc() and free() for some operations. ** ** The sqlite3_malloc() routine returns a pointer to a block ................................................................................ ** is not freed. ** ** The memory returned by sqlite3_malloc() and sqlite3_realloc() ** is always aligned to at least an 8 byte boundary. {END} ** ** The default implementation of the memory allocation subsystem uses ** the malloc(), realloc() and free() provided by the standard C library. ** {F17382} However, if SQLite is compiled with the ** SQLITE_MEMORY_SIZE=<i>NNN</i> C preprocessor macro (where <i>NNN</i> ** is an integer), then SQLite create a static array of at least ** <i>NNN</i> bytes in size and uses that array for all of its dynamic ** memory allocation needs. {END} Additional memory allocator options ** may be added in future releases. ** ** In SQLite version 3.5.0 and 3.5.1, it was possible to define ................................................................................ ** and whatever filename encoding is used by the particular Windows ** installation. Memory allocation errors are detected, but ** they are reported back as [SQLITE_CANTOPEN] or ** [SQLITE_IOERR] rather than [SQLITE_NOMEM]. ** ** INVARIANTS: ** ** {F17303} The [sqlite3_malloc(N)] interface returns either a pointer to ** a newly checked-out block of at least N bytes of memory ** that is 8-byte aligned, or it returns NULL if it is unable ** to fulfill the request. ** ** {F17304} The [sqlite3_malloc(N)] interface returns a NULL pointer if ** N is less than or equal to zero. ** ** {F17305} The [sqlite3_free(P)] interface releases memory previously ** returned from [sqlite3_malloc()] or [sqlite3_realloc()], ** making it available for reuse. ** ** {F17306} A call to [sqlite3_free(NULL)] is a harmless no-op. ** ** {F17310} A call to [sqlite3_realloc(0,N)] is equivalent to a call ** to [sqlite3_malloc(N)]. ** ** {F17312} A call to [sqlite3_realloc(P,0)] is equivalent to a call ** to [sqlite3_free(P)]. ** ** {F17315} The SQLite core uses [sqlite3_malloc()], [sqlite3_realloc()], ** and [sqlite3_free()] for all of its memory allocation and ** deallocation needs. ** ** {F17318} The [sqlite3_realloc(P,N)] interface returns either a pointer ** to a block of checked-out memory of at least N bytes in size ** that is 8-byte aligned, or a NULL pointer. ** ** {F17321} When [sqlite3_realloc(P,N)] returns a non-NULL pointer, it first ** copies the first K bytes of content from P into the newly ** allocated block, where K is the lesser of N and the size of ** the buffer P. ** ** {F17322} When [sqlite3_realloc(P,N)] returns a non-NULL pointer, it first ** releases the buffer P. ** ** {F17323} When [sqlite3_realloc(P,N)] returns NULL, the buffer P is ** not modified or released. ** ** LIMITATIONS: ** ** {A17350} The pointer arguments to [sqlite3_free()] and [sqlite3_realloc()] ** must be either NULL or else pointers obtained from a prior ** invocation of [sqlite3_malloc()] or [sqlite3_realloc()] that have ** not yet been released. ** ** {A17351} The application must not read or write any part of ................................................................................ ** [sqlite3_free()] or [sqlite3_realloc()]. */ SQLITE_API void *sqlite3_malloc(int); SQLITE_API void *sqlite3_realloc(void*, int); SQLITE_API void sqlite3_free(void*); /* ** CAPI3REF: Memory Allocator Statistics {F17370} ** ** SQLite provides these two interfaces for reporting on the status ** of the [sqlite3_malloc()], [sqlite3_free()], and [sqlite3_realloc()] ** routines, which form the built-in memory allocation subsystem. ** ** INVARIANTS: ** ** {F17371} The [sqlite3_memory_used()] routine returns the number of bytes ** of memory currently outstanding (malloced but not freed). ** ** {F17373} The [sqlite3_memory_highwater()] routine returns the maximum ** value of [sqlite3_memory_used()] since the high-water mark ** was last reset. ** ** {F17374} The values returned by [sqlite3_memory_used()] and ** [sqlite3_memory_highwater()] include any overhead ** added by SQLite in its implementation of [sqlite3_malloc()], ** but not overhead added by the any underlying system library ** routines that [sqlite3_malloc()] may call. ** ** {F17375} The memory high-water mark is reset to the current value of ** [sqlite3_memory_used()] if and only if the parameter to ** [sqlite3_memory_highwater()] is true. The value returned ** by [sqlite3_memory_highwater(1)] is the high-water mark ** prior to the reset. */ SQLITE_API sqlite3_int64 sqlite3_memory_used(void); SQLITE_API sqlite3_int64 sqlite3_memory_highwater(int resetFlag); /* ** CAPI3REF: Pseudo-Random Number Generator {F17390} ** ** SQLite contains a high-quality pseudo-random number generator (PRNG) used to ** select random ROWIDs when inserting new records into a table that ** already uses the largest possible ROWID. The PRNG is also used for ** the build-in random() and randomblob() SQL functions. This interface allows ** applications to access the same PRNG for other purposes. ** ................................................................................ ** from the xRandomness method of the default [sqlite3_vfs] object. ** On all subsequent invocations, the pseudo-randomness is generated ** internally and without recourse to the [sqlite3_vfs] xRandomness ** method. ** ** INVARIANTS: ** ** {F17392} The [sqlite3_randomness(N,P)] interface writes N bytes of ** high-quality pseudo-randomness into buffer P. */ SQLITE_API void sqlite3_randomness(int N, void *P); /* ** CAPI3REF: Compile-Time Authorization Callbacks {F12500} ** ** This routine registers a authorizer callback with a particular ** [database connection], supplied in the first argument. ** The authorizer callback is invoked as SQL statements are being compiled ** by [sqlite3_prepare()] or its variants [sqlite3_prepare_v2()], ** [sqlite3_prepare16()] and [sqlite3_prepare16_v2()]. At various ** points during the compilation process, as logic is being created ................................................................................ ** ** Note that the authorizer callback is invoked only during ** [sqlite3_prepare()] or its variants. Authorization is not ** performed during statement evaluation in [sqlite3_step()]. ** ** INVARIANTS: ** ** {F12501} The [sqlite3_set_authorizer(D,...)] interface registers a ** authorizer callback with database connection D. ** ** {F12502} The authorizer callback is invoked as SQL statements are ** being compiled. ** ** {F12503} If the authorizer callback returns any value other than ** [SQLITE_IGNORE], [SQLITE_OK], or [SQLITE_DENY], then ** the [sqlite3_prepare_v2()] or equivalent call that caused ** the authorizer callback to run shall fail with an ** [SQLITE_ERROR] error code and an appropriate error message. ** ** {F12504} When the authorizer callback returns [SQLITE_OK], the operation ** described is processed normally. ** ** {F12505} When the authorizer callback returns [SQLITE_DENY], the ** [sqlite3_prepare_v2()] or equivalent call that caused the ** authorizer callback to run shall fail ** with an [SQLITE_ERROR] error code and an error message ** explaining that access is denied. ** ** {F12506} If the authorizer code (the 2nd parameter to the authorizer ** callback) is [SQLITE_READ] and the authorizer callback returns ** [SQLITE_IGNORE], then the prepared statement is constructed to ** insert a NULL value in place of the table column that would have ** been read if [SQLITE_OK] had been returned. ** ** {F12507} If the authorizer code (the 2nd parameter to the authorizer ** callback) is anything other than [SQLITE_READ], then ** a return of [SQLITE_IGNORE] has the same effect as [SQLITE_DENY]. ** ** {F12510} The first parameter to the authorizer callback is a copy of ** the third parameter to the [sqlite3_set_authorizer()] interface. ** ** {F12511} The second parameter to the callback is an integer ** [SQLITE_COPY | action code] that specifies the particular action ** to be authorized. ** ** {F12512} The third through sixth parameters to the callback are ** zero-terminated strings that contain ** additional details about the action to be authorized. ** ** {F12520} Each call to [sqlite3_set_authorizer()] overrides ** any previously installed authorizer. ** ** {F12521} A NULL authorizer means that no authorization ** callback is invoked. ** ** {F12522} The default authorizer is NULL. */ SQLITE_API int sqlite3_set_authorizer( sqlite3*, int (*xAuth)(void*,int,const char*,const char*,const char*,const char*), void *pUserData ); /* ** CAPI3REF: Authorizer Return Codes {F12590} ** ** The [sqlite3_set_authorizer | authorizer callback function] must ** return either [SQLITE_OK] or one of these two constants in order ** to signal SQLite whether or not the action is permitted. See the ** [sqlite3_set_authorizer | authorizer documentation] for additional ** information. */ #define SQLITE_DENY 1 /* Abort the SQL statement with an error */ #define SQLITE_IGNORE 2 /* Don't allow access, but don't generate an error */ /* ** CAPI3REF: Authorizer Action Codes {F12550} ** ** The [sqlite3_set_authorizer()] interface registers a callback function ** that is invoked to authorize certain SQL statement actions. The ** second parameter to the callback is an integer code that specifies ** what action is being authorized. These are the integer action codes that ** the authorizer callback may be passed. ** ................................................................................ ** etc.) if applicable. The 6th parameter to the authorizer callback ** is the name of the inner-most trigger or view that is responsible for ** the access attempt or NULL if this access attempt is directly from ** top-level SQL code. ** ** INVARIANTS: ** ** {F12551} The second parameter to an ** [sqlite3_set_authorizer | authorizer callback] is always an integer ** [SQLITE_COPY | authorizer code] that specifies what action ** is being authorized. ** ** {F12552} The 3rd and 4th parameters to the ** [sqlite3_set_authorizer | authorization callback] ** will be parameters or NULL depending on which ** [SQLITE_COPY | authorizer code] is used as the second parameter. ** ** {F12553} The 5th parameter to the ** [sqlite3_set_authorizer | authorizer callback] is the name ** of the database (example: "main", "temp", etc.) if applicable. ** ** {F12554} The 6th parameter to the ** [sqlite3_set_authorizer | authorizer callback] is the name ** of the inner-most trigger or view that is responsible for ** the access attempt or NULL if this access attempt is directly from ** top-level SQL code. */ /******************************************* 3rd ************ 4th ***********/ #define SQLITE_CREATE_INDEX 1 /* Index Name Table Name */ ................................................................................ #define SQLITE_ANALYZE 28 /* Table Name NULL */ #define SQLITE_CREATE_VTABLE 29 /* Table Name Module Name */ #define SQLITE_DROP_VTABLE 30 /* Table Name Module Name */ #define SQLITE_FUNCTION 31 /* Function Name NULL */ #define SQLITE_COPY 0 /* No longer used */ /* ** CAPI3REF: Tracing And Profiling Functions {F12280} ** ** These routines register callback functions that can be used for ** tracing and profiling the execution of SQL statements. ** ** The callback function registered by sqlite3_trace() is invoked at ** various times when an SQL statement is being run by [sqlite3_step()]. ** The callback returns a UTF-8 rendering of the SQL statement text ................................................................................ ** contain a UTF-8 SQL comment that identifies the trigger. ** ** The callback function registered by sqlite3_profile() is invoked ** as each SQL statement finishes. The profile callback contains ** the original statement text and an estimate of wall-clock time ** of how long that statement took to run. ** ** The sqlite3_profile() API is currently considered experimental and ** is subject to change or removal in a future release. ** ** The trigger reporting feature of the trace callback is considered ** experimental and is subject to change or removal in future releases. ** Future versions of SQLite might also add new trace callback ** invocations. ** ** INVARIANTS: ** ** {F12281} The callback function registered by [sqlite3_trace()] is ** whenever an SQL statement first begins to execute and ** whenever a trigger subprogram first begins to run. ** ** {F12282} Each call to [sqlite3_trace()] overrides the previously ** registered trace callback. ** ** {F12283} A NULL trace callback disables tracing. ** ** {F12284} The first argument to the trace callback is a copy of ** the pointer which was the 3rd argument to [sqlite3_trace()]. ** ** {F12285} The second argument to the trace callback is a ** zero-terminated UTF-8 string containing the original text ** of the SQL statement as it was passed into [sqlite3_prepare_v2()] ** or the equivalent, or an SQL comment indicating the beginning ** of a trigger subprogram. ** ** {F12287} The callback function registered by [sqlite3_profile()] is invoked ** as each SQL statement finishes. ** ** {F12288} The first parameter to the profile callback is a copy of ** the 3rd parameter to [sqlite3_profile()]. ** ** {F12289} The second parameter to the profile callback is a ** zero-terminated UTF-8 string that contains the complete text of ** the SQL statement as it was processed by [sqlite3_prepare_v2()] ** or the equivalent. ** ** {F12290} The third parameter to the profile callback is an estimate ** of the number of nanoseconds of wall-clock time required to ** run the SQL statement from start to finish. */ SQLITE_API void *sqlite3_trace(sqlite3*, void(*xTrace)(void*,const char*), void*); SQLITE_API void *sqlite3_profile(sqlite3*, void(*xProfile)(void*,const char*,sqlite3_uint64), void*); /* ** CAPI3REF: Query Progress Callbacks {F12910} ** ** This routine configures a callback function - the ** progress callback - that is invoked periodically during long ** running calls to [sqlite3_exec()], [sqlite3_step()] and ** [sqlite3_get_table()]. An example use for this ** interface is to keep a GUI updated during a large query. ** ** If the progress callback returns non-zero, the operation is ** interrupted. This feature can be used to implement a ** "Cancel" button on a GUI dialog box. ** ** INVARIANTS: ** ** {F12911} The callback function registered by sqlite3_progress_handler() ** is invoked periodically during long running calls to ** [sqlite3_step()]. ** ** {F12912} The progress callback is invoked once for every N virtual ** machine opcodes, where N is the second argument to ** the [sqlite3_progress_handler()] call that registered ** the callback. If N is less than 1, sqlite3_progress_handler() ** acts as if a NULL progress handler had been specified. ** ** {F12913} The progress callback itself is identified by the third ** argument to sqlite3_progress_handler(). ** ** {F12914} The fourth argument to sqlite3_progress_handler() is a ** void pointer passed to the progress callback ** function each time it is invoked. ** ** {F12915} If a call to [sqlite3_step()] results in fewer than N opcodes ** being executed, then the progress callback is never invoked. ** ** {F12916} Every call to [sqlite3_progress_handler()] ** overwrites any previously registered progress handler. ** ** {F12917} If the progress handler callback is NULL then no progress ** handler is invoked. ** ** {F12918} If the progress callback returns a result other than 0, then ** the behavior is a if [sqlite3_interrupt()] had been called. */ SQLITE_API void sqlite3_progress_handler(sqlite3*, int, int(*)(void*), void*); /* ** CAPI3REF: Opening A New Database Connection {F12700} ** ** These routines open an SQLite database file whose name is given by the ** filename argument. The filename argument is interpreted as UTF-8 for ** sqlite3_open() and sqlite3_open_v2() and as UTF-16 in the native byte ** order for sqlite3_open16(). A [database connection] handle is usually ** returned in *ppDb, even if an error occurs. The only exception is that ** if SQLite is unable to allocate memory to hold the [sqlite3] object, ................................................................................ ** of sqlite3_open() and sqlite3_open_v2() must be UTF-8, not whatever ** codepage is currently defined. Filenames containing international ** characters must be converted to UTF-8 prior to passing them into ** sqlite3_open() or sqlite3_open_v2(). ** ** INVARIANTS: ** ** {F12701} The [sqlite3_open()], [sqlite3_open16()], and ** [sqlite3_open_v2()] interfaces create a new ** [database connection] associated with ** the database file given in their first parameter. ** ** {F12702} The filename argument is interpreted as UTF-8 ** for [sqlite3_open()] and [sqlite3_open_v2()] and as UTF-16 ** in the native byte order for [sqlite3_open16()]. ** ** {F12703} A successful invocation of [sqlite3_open()], [sqlite3_open16()], ** or [sqlite3_open_v2()] writes a pointer to a new ** [database connection] into *ppDb. ** ** {F12704} The [sqlite3_open()], [sqlite3_open16()], and ** [sqlite3_open_v2()] interfaces return [SQLITE_OK] upon success, ** or an appropriate [error code] on failure. ** ** {F12706} The default text encoding for a new database created using ** [sqlite3_open()] or [sqlite3_open_v2()] will be UTF-8. ** ** {F12707} The default text encoding for a new database created using ** [sqlite3_open16()] will be UTF-16. ** ** {F12709} The [sqlite3_open(F,D)] interface is equivalent to ** [sqlite3_open_v2(F,D,G,0)] where the G parameter is ** [SQLITE_OPEN_READWRITE]|[SQLITE_OPEN_CREATE]. ** ** {F12711} If the G parameter to [sqlite3_open_v2(F,D,G,V)] contains the ** bit value [SQLITE_OPEN_READONLY] then the database is opened ** for reading only. ** ** {F12712} If the G parameter to [sqlite3_open_v2(F,D,G,V)] contains the ** bit value [SQLITE_OPEN_READWRITE] then the database is opened ** reading and writing if possible, or for reading only if the ** file is write protected by the operating system. ** ** {F12713} If the G parameter to [sqlite3_open(v2(F,D,G,V)] omits the ** bit value [SQLITE_OPEN_CREATE] and the database does not ** previously exist, an error is returned. ** ** {F12714} If the G parameter to [sqlite3_open(v2(F,D,G,V)] contains the ** bit value [SQLITE_OPEN_CREATE] and the database does not ** previously exist, then an attempt is made to create and ** initialize the database. ** ** {F12717} If the filename argument to [sqlite3_open()], [sqlite3_open16()], ** or [sqlite3_open_v2()] is ":memory:", then an private, ** ephemeral, in-memory database is created for the connection. ** <todo>Is SQLITE_OPEN_CREATE|SQLITE_OPEN_READWRITE required ** in sqlite3_open_v2()?</todo> ** ** {F12719} If the filename is NULL or an empty string, then a private, ** ephemeral on-disk database will be created. ** <todo>Is SQLITE_OPEN_CREATE|SQLITE_OPEN_READWRITE required ** in sqlite3_open_v2()?</todo> ** ** {F12721} The [database connection] created by [sqlite3_open_v2(F,D,G,V)] ** will use the [sqlite3_vfs] object identified by the V parameter, ** or the default [sqlite3_vfs] object if V is a NULL pointer. ** ** {F12723} Two [database connections] will share a common cache if both were ** opened with the same VFS while [shared cache mode] was enabled and ** if both filenames compare equal using memcmp() after having been ** processed by the [sqlite3_vfs | xFullPathname] method of the VFS. */ SQLITE_API int sqlite3_open( const char *filename, /* Database filename (UTF-8) */ sqlite3 **ppDb /* OUT: SQLite db handle */ ................................................................................ const char *filename, /* Database filename (UTF-8) */ sqlite3 **ppDb, /* OUT: SQLite db handle */ int flags, /* Flags */ const char *zVfs /* Name of VFS module to use */ ); /* ** CAPI3REF: Error Codes And Messages {F12800} ** ** The sqlite3_errcode() interface returns the numeric [result code] or ** [extended result code] for the most recent failed sqlite3_* API call ** associated with a [database connection]. If a prior API call failed ** but the most recent API call succeeded, the return value from ** sqlite3_errcode() is undefined. ** ................................................................................ ** ** If an interface fails with SQLITE_MISUSE, that means the interface ** was invoked incorrectly by the application. In that case, the ** error code and message may or may not be set. ** ** INVARIANTS: ** ** {F12801} The [sqlite3_errcode(D)] interface returns the numeric ** [result code] or [extended result code] for the most recently ** failed interface call associated with the [database connection] D. ** ** {F12803} The [sqlite3_errmsg(D)] and [sqlite3_errmsg16(D)] ** interfaces return English-language text that describes ** the error in the mostly recently failed interface call, ** encoded as either UTF-8 or UTF-16 respectively. ** ** {F12807} The strings returned by [sqlite3_errmsg()] and [sqlite3_errmsg16()] ** are valid until the next SQLite interface call. ** ** {F12808} Calls to API routines that do not return an error code ** (example: [sqlite3_data_count()]) do not ** change the error code or message returned by ** [sqlite3_errcode()], [sqlite3_errmsg()], or [sqlite3_errmsg16()]. ** ** {F12809} Interfaces that are not associated with a specific ** [database connection] (examples: ** [sqlite3_mprintf()] or [sqlite3_enable_shared_cache()] ** do not change the values returned by ** [sqlite3_errcode()], [sqlite3_errmsg()], or [sqlite3_errmsg16()]. */ SQLITE_API int sqlite3_errcode(sqlite3 *db); SQLITE_API const char *sqlite3_errmsg(sqlite3*); SQLITE_API const void *sqlite3_errmsg16(sqlite3*); /* ** CAPI3REF: SQL Statement Object {F13000} ** KEYWORDS: {prepared statement} {prepared statements} ** ** An instance of this object represents a single SQL statement. ** This object is variously known as a "prepared statement" or a ** "compiled SQL statement" or simply as a "statement". ** ** The life of a statement object goes something like this: ................................................................................ ** ** Refer to documentation on individual methods above for additional ** information. */ typedef struct sqlite3_stmt sqlite3_stmt; /* ** CAPI3REF: Run-time Limits {F12760} ** ** This interface allows the size of various constructs to be limited ** on a connection by connection basis. The first parameter is the ** [database connection] whose limit is to be set or queried. The ** second parameter is one of the [limit categories] that define a ** class of constructs to be size limited. The third parameter is the ** new limit for that construct. The function returns the old limit. ................................................................................ ** created by an untrusted script can be contained using the ** [max_page_count] [PRAGMA]. ** ** New run-time limit categories may be added in future releases. ** ** INVARIANTS: ** ** {F12762} A successful call to [sqlite3_limit(D,C,V)] where V is ** positive changes the limit on the size of construct C in the ** [database connection] D to the lesser of V and the hard upper ** bound on the size of C that is set at compile-time. ** ** {F12766} A successful call to [sqlite3_limit(D,C,V)] where V is negative ** leaves the state of the [database connection] D unchanged. ** ** {F12769} A successful call to [sqlite3_limit(D,C,V)] returns the ** value of the limit on the size of construct C in the ** [database connection] D as it was prior to the call. */ SQLITE_API int sqlite3_limit(sqlite3*, int id, int newVal); /* ** CAPI3REF: Run-Time Limit Categories {F12790} ** KEYWORDS: {limit category} {limit categories} ** ** These constants define various aspects of a [database connection] ** that can be limited in size by calls to [sqlite3_limit()]. ** The meanings of the various limits are as follows: ** ** <dl> ................................................................................ #define SQLITE_LIMIT_VDBE_OP 5 #define SQLITE_LIMIT_FUNCTION_ARG 6 #define SQLITE_LIMIT_ATTACHED 7 #define SQLITE_LIMIT_LIKE_PATTERN_LENGTH 8 #define SQLITE_LIMIT_VARIABLE_NUMBER 9 /* ** CAPI3REF: Compiling An SQL Statement {F13010} ** KEYWORDS: {SQL statement compiler} ** ** To execute an SQL query, it must first be compiled into a byte-code ** program using one of these routines. ** ** The first argument, "db", is a [database connection] obtained from a ** prior call to [sqlite3_open()], [sqlite3_open_v2()] or [sqlite3_open16()]. ................................................................................ ** to find the underlying cause of the problem. With the "v2" prepare ** interfaces, the underlying reason for the error is returned immediately. ** </li> ** </ol> ** ** INVARIANTS: ** ** {F13011} The [sqlite3_prepare(db,zSql,...)] and ** [sqlite3_prepare_v2(db,zSql,...)] interfaces interpret the ** text in their zSql parameter as UTF-8. ** ** {F13012} The [sqlite3_prepare16(db,zSql,...)] and ** [sqlite3_prepare16_v2(db,zSql,...)] interfaces interpret the ** text in their zSql parameter as UTF-16 in the native byte order. ** ** {F13013} If the nByte argument to [sqlite3_prepare_v2(db,zSql,nByte,...)] ** and its variants is less than zero, the SQL text is ** read from zSql is read up to the first zero terminator. ** ** {F13014} If the nByte argument to [sqlite3_prepare_v2(db,zSql,nByte,...)] ** and its variants is non-negative, then at most nBytes bytes of ** SQL text is read from zSql. ** ** {F13015} In [sqlite3_prepare_v2(db,zSql,N,P,pzTail)] and its variants ** if the zSql input text contains more than one SQL statement ** and pzTail is not NULL, then *pzTail is made to point to the ** first byte past the end of the first SQL statement in zSql. ** <todo>What does *pzTail point to if there is one statement?</todo> ** ** {F13016} A successful call to [sqlite3_prepare_v2(db,zSql,N,ppStmt,...)] ** or one of its variants writes into *ppStmt a pointer to a new ** [prepared statement] or a pointer to NULL if zSql contains ** nothing other than whitespace or comments. ** ** {F13019} The [sqlite3_prepare_v2()] interface and its variants return ** [SQLITE_OK] or an appropriate [error code] upon failure. ** ** {F13021} Before [sqlite3_prepare(db,zSql,nByte,ppStmt,pzTail)] or its ** variants returns an error (any value other than [SQLITE_OK]), ** they first set *ppStmt to NULL. */ SQLITE_API int sqlite3_prepare( sqlite3 *db, /* Database handle */ const char *zSql, /* SQL statement, UTF-8 encoded */ int nByte, /* Maximum length of zSql in bytes. */ ................................................................................ const void *zSql, /* SQL statement, UTF-16 encoded */ int nByte, /* Maximum length of zSql in bytes. */ sqlite3_stmt **ppStmt, /* OUT: Statement handle */ const void **pzTail /* OUT: Pointer to unused portion of zSql */ ); /* ** CAPIREF: Retrieving Statement SQL {F13100} ** ** This interface can be used to retrieve a saved copy of the original ** SQL text used to create a [prepared statement] if that statement was ** compiled using either [sqlite3_prepare_v2()] or [sqlite3_prepare16_v2()]. ** ** INVARIANTS: ** ** {F13101} If the [prepared statement] passed as the argument to ** [sqlite3_sql()] was compiled using either [sqlite3_prepare_v2()] or ** [sqlite3_prepare16_v2()], then [sqlite3_sql()] returns ** a pointer to a zero-terminated string containing a UTF-8 rendering ** of the original SQL statement. ** ** {F13102} If the [prepared statement] passed as the argument to ** [sqlite3_sql()] was compiled using either [sqlite3_prepare()] or ** [sqlite3_prepare16()], then [sqlite3_sql()] returns a NULL pointer. ** ** {F13103} The string returned by [sqlite3_sql(S)] is valid until the ** [prepared statement] S is deleted using [sqlite3_finalize(S)]. */ SQLITE_API const char *sqlite3_sql(sqlite3_stmt *pStmt); /* ** CAPI3REF: Dynamically Typed Value Object {F15000} ** KEYWORDS: {protected sqlite3_value} {unprotected sqlite3_value} ** ** SQLite uses the sqlite3_value object to represent all values ** that can be stored in a database table. SQLite uses dynamic typing ** for the values it stores. Values stored in sqlite3_value objects ** can be integers, floating point values, strings, BLOBs, or NULL. ** ................................................................................ ** [sqlite3_result_value()] and [sqlite3_bind_value()]. ** The [sqlite3_value_blob | sqlite3_value_type()] family of ** interfaces require protected sqlite3_value objects. */ typedef struct Mem sqlite3_value; /* ** CAPI3REF: SQL Function Context Object {F16001} ** ** The context in which an SQL function executes is stored in an ** sqlite3_context object. A pointer to an sqlite3_context object ** is always first parameter to [application-defined SQL functions]. ** The application-defined SQL function implementation will pass this ** pointer through into calls to [sqlite3_result_int | sqlite3_result()], ** [sqlite3_aggregate_context()], [sqlite3_user_data()], ** [sqlite3_context_db_handle()], [sqlite3_get_auxdata()], ** and/or [sqlite3_set_auxdata()]. */ typedef struct sqlite3_context sqlite3_context; /* ** CAPI3REF: Binding Values To Prepared Statements {F13500} ** KEYWORDS: {host parameter} {host parameters} {host parameter name} ** KEYWORDS: {SQL parameter} {SQL parameters} {parameter binding} ** ** In the SQL strings input to [sqlite3_prepare_v2()] and its variants, ** literals may be replaced by a parameter in one of these forms: ** ** <ul> ................................................................................ ** panic rather than return SQLITE_MISUSE. ** ** See also: [sqlite3_bind_parameter_count()], ** [sqlite3_bind_parameter_name()], and [sqlite3_bind_parameter_index()]. ** ** INVARIANTS: ** ** {F13506} The [SQL statement compiler] recognizes tokens of the forms ** "?", "?NNN", "$VVV", ":VVV", and "@VVV" as SQL parameters, ** where NNN is any sequence of one or more digits ** and where VVV is any sequence of one or more alphanumeric ** characters or "::" optionally followed by a string containing ** no spaces and contained within parentheses. ** ** {F13509} The initial value of an SQL parameter is NULL. ** ** {F13512} The index of an "?" SQL parameter is one larger than the ** largest index of SQL parameter to the left, or 1 if ** the "?" is the leftmost SQL parameter. ** ** {F13515} The index of an "?NNN" SQL parameter is the integer NNN. ** ** {F13518} The index of an ":VVV", "$VVV", or "@VVV" SQL parameter is ** the same as the index of leftmost occurrences of the same ** parameter, or one more than the largest index over all ** parameters to the left if this is the first occurrence ** of this parameter, or 1 if this is the leftmost parameter. ** ** {F13521} The [SQL statement compiler] fails with an [SQLITE_RANGE] ** error if the index of an SQL parameter is less than 1 ** or greater than the compile-time SQLITE_MAX_VARIABLE_NUMBER ** parameter. ** ** {F13524} Calls to [sqlite3_bind_text | sqlite3_bind(S,N,V,...)] ** associate the value V with all SQL parameters having an ** index of N in the [prepared statement] S. ** ** {F13527} Calls to [sqlite3_bind_text | sqlite3_bind(S,N,...)] ** override prior calls with the same values of S and N. ** ** {F13530} Bindings established by [sqlite3_bind_text | sqlite3_bind(S,...)] ** persist across calls to [sqlite3_reset(S)]. ** ** {F13533} In calls to [sqlite3_bind_blob(S,N,V,L,D)], ** [sqlite3_bind_text(S,N,V,L,D)], or ** [sqlite3_bind_text16(S,N,V,L,D)] SQLite binds the first L ** bytes of the BLOB or string pointed to by V, when L ** is non-negative. ** ** {F13536} In calls to [sqlite3_bind_text(S,N,V,L,D)] or ** [sqlite3_bind_text16(S,N,V,L,D)] SQLite binds characters ** from V through the first zero character when L is negative. ** ** {F13539} In calls to [sqlite3_bind_blob(S,N,V,L,D)], ** [sqlite3_bind_text(S,N,V,L,D)], or ** [sqlite3_bind_text16(S,N,V,L,D)] when D is the special ** constant [SQLITE_STATIC], SQLite assumes that the value V ** is held in static unmanaged space that will not change ** during the lifetime of the binding. ** ** {F13542} In calls to [sqlite3_bind_blob(S,N,V,L,D)], ** [sqlite3_bind_text(S,N,V,L,D)], or ** [sqlite3_bind_text16(S,N,V,L,D)] when D is the special ** constant [SQLITE_TRANSIENT], the routine makes a ** private copy of the value V before it returns. ** ** {F13545} In calls to [sqlite3_bind_blob(S,N,V,L,D)], ** [sqlite3_bind_text(S,N,V,L,D)], or ** [sqlite3_bind_text16(S,N,V,L,D)] when D is a pointer to ** a function, SQLite invokes that function to destroy the ** value V after it has finished using the value V. ** ** {F13548} In calls to [sqlite3_bind_zeroblob(S,N,V,L)] the value bound ** is a BLOB of L bytes, or a zero-length BLOB if L is negative. ** ** {F13551} In calls to [sqlite3_bind_value(S,N,V)] the V argument may ** be either a [protected sqlite3_value] object or an ** [unprotected sqlite3_value] object. */ SQLITE_API int sqlite3_bind_blob(sqlite3_stmt*, int, const void*, int n, void(*)(void*)); SQLITE_API int sqlite3_bind_double(sqlite3_stmt*, int, double); SQLITE_API int sqlite3_bind_int(sqlite3_stmt*, int, int); SQLITE_API int sqlite3_bind_int64(sqlite3_stmt*, int, sqlite3_int64); ................................................................................ SQLITE_API int sqlite3_bind_null(sqlite3_stmt*, int); SQLITE_API int sqlite3_bind_text(sqlite3_stmt*, int, const char*, int n, void(*)(void*)); SQLITE_API int sqlite3_bind_text16(sqlite3_stmt*, int, const void*, int, void(*)(void*)); SQLITE_API int sqlite3_bind_value(sqlite3_stmt*, int, const sqlite3_value*); SQLITE_API int sqlite3_bind_zeroblob(sqlite3_stmt*, int, int n); /* ** CAPI3REF: Number Of SQL Parameters {F13600} ** ** This routine can be used to find the number of [SQL parameters] ** in a [prepared statement]. SQL parameters are tokens of the ** form "?", "?NNN", ":AAA", "$AAA", or "@AAA" that serve as ** placeholders for values that are [sqlite3_bind_blob | bound] ** to the parameters at a later time. ** ................................................................................ ** ** See also: [sqlite3_bind_blob|sqlite3_bind()], ** [sqlite3_bind_parameter_name()], and ** [sqlite3_bind_parameter_index()]. ** ** INVARIANTS: ** ** {F13601} The [sqlite3_bind_parameter_count(S)] interface returns ** the largest index of all SQL parameters in the ** [prepared statement] S, or 0 if S contains no SQL parameters. */ SQLITE_API int sqlite3_bind_parameter_count(sqlite3_stmt*); /* ** CAPI3REF: Name Of A Host Parameter {F13620} ** ** This routine returns a pointer to the name of the n-th ** [SQL parameter] in a [prepared statement]. ** SQL parameters of the form "?NNN" or ":AAA" or "@AAA" or "$AAA" ** have a name which is the string "?NNN" or ":AAA" or "@AAA" or "$AAA" ** respectively. ** In other words, the initial ":" or "$" or "@" or "?" ................................................................................ ** ** See also: [sqlite3_bind_blob|sqlite3_bind()], ** [sqlite3_bind_parameter_count()], and ** [sqlite3_bind_parameter_index()]. ** ** INVARIANTS: ** ** {F13621} The [sqlite3_bind_parameter_name(S,N)] interface returns ** a UTF-8 rendering of the name of the SQL parameter in ** the [prepared statement] S having index N, or ** NULL if there is no SQL parameter with index N or if the ** parameter with index N is an anonymous parameter "?". */ SQLITE_API const char *sqlite3_bind_parameter_name(sqlite3_stmt*, int); /* ** CAPI3REF: Index Of A Parameter With A Given Name {F13640} ** ** Return the index of an SQL parameter given its name. The ** index value returned is suitable for use as the second ** parameter to [sqlite3_bind_blob|sqlite3_bind()]. A zero ** is returned if no matching parameter is found. The parameter ** name must be given in UTF-8 even if the original statement ** was prepared from UTF-16 text using [sqlite3_prepare16_v2()]. ................................................................................ ** ** See also: [sqlite3_bind_blob|sqlite3_bind()], ** [sqlite3_bind_parameter_count()], and ** [sqlite3_bind_parameter_index()]. ** ** INVARIANTS: ** ** {F13641} The [sqlite3_bind_parameter_index(S,N)] interface returns ** the index of SQL parameter in the [prepared statement] ** S whose name matches the UTF-8 string N, or 0 if there is ** no match. */ SQLITE_API int sqlite3_bind_parameter_index(sqlite3_stmt*, const char *zName); /* ** CAPI3REF: Reset All Bindings On A Prepared Statement {F13660} ** ** Contrary to the intuition of many, [sqlite3_reset()] does not reset ** the [sqlite3_bind_blob | bindings] on a [prepared statement]. ** Use this routine to reset all host parameters to NULL. ** ** INVARIANTS: ** ** {F13661} The [sqlite3_clear_bindings(S)] interface resets all SQL ** parameter bindings in the [prepared statement] S back to NULL. */ SQLITE_API int sqlite3_clear_bindings(sqlite3_stmt*); /* ** CAPI3REF: Number Of Columns In A Result Set {F13710} ** ** Return the number of columns in the result set returned by the ** [prepared statement]. This routine returns 0 if pStmt is an SQL ** statement that does not return data (for example an [UPDATE]). ** ** INVARIANTS: ** ** {F13711} The [sqlite3_column_count(S)] interface returns the number of ** columns in the result set generated by the [prepared statement] S, ** or 0 if S does not generate a result set. */ SQLITE_API int sqlite3_column_count(sqlite3_stmt *pStmt); /* ** CAPI3REF: Column Names In A Result Set {F13720} ** ** These routines return the name assigned to a particular column ** in the result set of a [SELECT] statement. The sqlite3_column_name() ** interface returns a pointer to a zero-terminated UTF-8 string ** and sqlite3_column_name16() returns a pointer to a zero-terminated ** UTF-16 string. The first parameter is the [prepared statement] ** that implements the [SELECT] statement. The second parameter is the ................................................................................ ** The name of a result column is the value of the "AS" clause for ** that column, if there is an AS clause. If there is no AS clause ** then the name of the column is unspecified and may change from ** one release of SQLite to the next. ** ** INVARIANTS: ** ** {F13721} A successful invocation of the [sqlite3_column_name(S,N)] ** interface returns the name of the Nth column (where 0 is ** the leftmost column) for the result set of the ** [prepared statement] S as a zero-terminated UTF-8 string. ** ** {F13723} A successful invocation of the [sqlite3_column_name16(S,N)] ** interface returns the name of the Nth column (where 0 is ** the leftmost column) for the result set of the ** [prepared statement] S as a zero-terminated UTF-16 string ** in the native byte order. ** ** {F13724} The [sqlite3_column_name()] and [sqlite3_column_name16()] ** interfaces return a NULL pointer if they are unable to ** allocate memory to hold their normal return strings. ** ** {F13725} If the N parameter to [sqlite3_column_name(S,N)] or ** [sqlite3_column_name16(S,N)] is out of range, then the ** interfaces return a NULL pointer. ** ** {F13726} The strings returned by [sqlite3_column_name(S,N)] and ** [sqlite3_column_name16(S,N)] are valid until the next ** call to either routine with the same S and N parameters ** or until [sqlite3_finalize(S)] is called. ** ** {F13727} When a result column of a [SELECT] statement contains ** an AS clause, the name of that column is the identifier ** to the right of the AS keyword. */ SQLITE_API const char *sqlite3_column_name(sqlite3_stmt*, int N); SQLITE_API const void *sqlite3_column_name16(sqlite3_stmt*, int N); /* ** CAPI3REF: Source Of Data In A Query Result {F13740} ** ** These routines provide a means to determine what column of what ** table in which database a result of a [SELECT] statement comes from. ** The name of the database or table or column can be returned as ** either a UTF-8 or UTF-16 string. The _database_ routines return ** the database name, the _table_ routines return the table name, and ** the origin_ routines return the column name. ................................................................................ ** {A13751} ** If two or more threads call one or more of these routines against the same ** prepared statement and column at the same time then the results are ** undefined. ** ** INVARIANTS: ** ** {F13741} The [sqlite3_column_database_name(S,N)] interface returns either ** the UTF-8 zero-terminated name of the database from which the ** Nth result column of the [prepared statement] S is extracted, ** or NULL if the Nth column of S is a general expression ** or if unable to allocate memory to store the name. ** ** {F13742} The [sqlite3_column_database_name16(S,N)] interface returns either ** the UTF-16 native byte order zero-terminated name of the database ** from which the Nth result column of the [prepared statement] S is ** extracted, or NULL if the Nth column of S is a general expression ** or if unable to allocate memory to store the name. ** ** {F13743} The [sqlite3_column_table_name(S,N)] interface returns either ** the UTF-8 zero-terminated name of the table from which the ** Nth result column of the [prepared statement] S is extracted, ** or NULL if the Nth column of S is a general expression ** or if unable to allocate memory to store the name. ** ** {F13744} The [sqlite3_column_table_name16(S,N)] interface returns either ** the UTF-16 native byte order zero-terminated name of the table ** from which the Nth result column of the [prepared statement] S is ** extracted, or NULL if the Nth column of S is a general expression ** or if unable to allocate memory to store the name. ** ** {F13745} The [sqlite3_column_origin_name(S,N)] interface returns either ** the UTF-8 zero-terminated name of the table column from which the ** Nth result column of the [prepared statement] S is extracted, ** or NULL if the Nth column of S is a general expression ** or if unable to allocate memory to store the name. ** ** {F13746} The [sqlite3_column_origin_name16(S,N)] interface returns either ** the UTF-16 native byte order zero-terminated name of the table ** column from which the Nth result column of the ** [prepared statement] S is extracted, or NULL if the Nth column ** of S is a general expression or if unable to allocate memory ** to store the name. ** ** {F13748} The return values from ** [sqlite3_column_database_name | column metadata interfaces] ** are valid for the lifetime of the [prepared statement] ** or until the encoding is changed by another metadata ** interface call for the same prepared statement and column. ** ** LIMITATIONS: ** ** {A13751} If two or more threads call one or more ** [sqlite3_column_database_name | column metadata interfaces] ** for the same [prepared statement] and result column ** at the same time then the results are undefined. */ SQLITE_API const char *sqlite3_column_database_name(sqlite3_stmt*,int); ................................................................................ SQLITE_API const void *sqlite3_column_database_name16(sqlite3_stmt*,int); SQLITE_API const char *sqlite3_column_table_name(sqlite3_stmt*,int); SQLITE_API const void *sqlite3_column_table_name16(sqlite3_stmt*,int); SQLITE_API const char *sqlite3_column_origin_name(sqlite3_stmt*,int); SQLITE_API const void *sqlite3_column_origin_name16(sqlite3_stmt*,int); /* ** CAPI3REF: Declared Datatype Of A Query Result {F13760} ** ** The first parameter is a [prepared statement]. ** If this statement is a [SELECT] statement and the Nth column of the ** returned result set of that [SELECT] is a table column (not an ** expression or subquery) then the declared type of the table ** column is returned. If the Nth column of the result set is an ** expression or subquery, then a NULL pointer is returned. ................................................................................ ** data stored in that column is of the declared type. SQLite is ** strongly typed, but the typing is dynamic not static. Type ** is associated with individual values, not with the containers ** used to hold those values. ** ** INVARIANTS: ** ** {F13761} A successful call to [sqlite3_column_decltype(S,N)] returns a ** zero-terminated UTF-8 string containing the declared datatype ** of the table column that appears as the Nth column (numbered ** from 0) of the result set to the [prepared statement] S. ** ** {F13762} A successful call to [sqlite3_column_decltype16(S,N)] ** returns a zero-terminated UTF-16 native byte order string ** containing the declared datatype of the table column that appears ** as the Nth column (numbered from 0) of the result set to the ** [prepared statement] S. ** ** {F13763} If N is less than 0 or N is greater than or equal to ** the number of columns in the [prepared statement] S, ** or if the Nth column of S is an expression or subquery rather ** than a table column, or if a memory allocation failure ** occurs during encoding conversions, then ** calls to [sqlite3_column_decltype(S,N)] or ** [sqlite3_column_decltype16(S,N)] return NULL. */ SQLITE_API const char *sqlite3_column_decltype(sqlite3_stmt*,int); SQLITE_API const void *sqlite3_column_decltype16(sqlite3_stmt*,int); /* ** CAPI3REF: Evaluate An SQL Statement {F13200} ** ** After a [prepared statement] has been prepared using either ** [sqlite3_prepare_v2()] or [sqlite3_prepare16_v2()] or one of the legacy ** interfaces [sqlite3_prepare()] or [sqlite3_prepare16()], this function ** must be called one or more times to evaluate the statement. ** ** The details of the behavior of the sqlite3_step() interface depend ................................................................................ ** using either [sqlite3_prepare_v2()] or [sqlite3_prepare16_v2()] instead ** of the legacy [sqlite3_prepare()] and [sqlite3_prepare16()] interfaces, ** then the more specific [error codes] are returned directly ** by sqlite3_step(). The use of the "v2" interface is recommended. ** ** INVARIANTS: ** ** {F13202} If the [prepared statement] S is ready to be run, then ** [sqlite3_step(S)] advances that prepared statement until ** completion or until it is ready to return another row of the ** result set, or until an [sqlite3_interrupt | interrupt] ** or a run-time error occurs. ** ** {F15304} When a call to [sqlite3_step(S)] causes the [prepared statement] ** S to run to completion, the function returns [SQLITE_DONE]. ** ** {F15306} When a call to [sqlite3_step(S)] stops because it is ready to ** return another row of the result set, it returns [SQLITE_ROW]. ** ** {F15308} If a call to [sqlite3_step(S)] encounters an ** [sqlite3_interrupt | interrupt] or a run-time error, ** it returns an appropriate error code that is not one of ** [SQLITE_OK], [SQLITE_ROW], or [SQLITE_DONE]. ** ** {F15310} If an [sqlite3_interrupt | interrupt] or a run-time error ** occurs during a call to [sqlite3_step(S)] ** for a [prepared statement] S created using ** legacy interfaces [sqlite3_prepare()] or ** [sqlite3_prepare16()], then the function returns either ** [SQLITE_ERROR], [SQLITE_BUSY], or [SQLITE_MISUSE]. */ SQLITE_API int sqlite3_step(sqlite3_stmt*); /* ** CAPI3REF: Number of columns in a result set {F13770} ** ** Returns the number of values in the current row of the result set. ** ** INVARIANTS: ** ** {F13771} After a call to [sqlite3_step(S)] that returns [SQLITE_ROW], ** the [sqlite3_data_count(S)] routine will return the same value ** as the [sqlite3_column_count(S)] function. ** ** {F13772} After [sqlite3_step(S)] has returned any value other than ** [SQLITE_ROW] or before [sqlite3_step(S)] has been called on the ** [prepared statement] for the first time since it was ** [sqlite3_prepare | prepared] or [sqlite3_reset | reset], ** the [sqlite3_data_count(S)] routine returns zero. */ SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt); /* ** CAPI3REF: Fundamental Datatypes {F10265} ** KEYWORDS: SQLITE_TEXT ** ** {F10266} Every value in SQLite has one of five fundamental datatypes: ** ** <ul> ** <li> 64-bit signed integer ** <li> 64-bit IEEE floating point number ** <li> string ** <li> BLOB ** <li> NULL ................................................................................ # undef SQLITE_TEXT #else # define SQLITE_TEXT 3 #endif #define SQLITE3_TEXT 3 /* ** CAPI3REF: Result Values From A Query {F13800} ** KEYWORDS: {column access functions} ** ** These routines form the "result set query" interface. ** ** These routines return information about a single column of the current ** result row of a query. In every case the first argument is a pointer ** to the [prepared statement] that is being evaluated (the [sqlite3_stmt*] ................................................................................ ** of these routines, a default value is returned. The default value ** is either the integer 0, the floating point number 0.0, or a NULL ** pointer. Subsequent calls to [sqlite3_errcode()] will return ** [SQLITE_NOMEM]. ** ** INVARIANTS: ** ** {F13803} The [sqlite3_column_blob(S,N)] interface converts the ** Nth column in the current row of the result set for ** the [prepared statement] S into a BLOB and then returns a ** pointer to the converted value. ** ** {F13806} The [sqlite3_column_bytes(S,N)] interface returns the ** number of bytes in the BLOB or string (exclusive of the ** zero terminator on the string) that was returned by the ** most recent call to [sqlite3_column_blob(S,N)] or ** [sqlite3_column_text(S,N)]. ** ** {F13809} The [sqlite3_column_bytes16(S,N)] interface returns the ** number of bytes in the string (exclusive of the ** zero terminator on the string) that was returned by the ** most recent call to [sqlite3_column_text16(S,N)]. ** ** {F13812} The [sqlite3_column_double(S,N)] interface converts the ** Nth column in the current row of the result set for the ** [prepared statement] S into a floating point value and ** returns a copy of that value. ** ** {F13815} The [sqlite3_column_int(S,N)] interface converts the ** Nth column in the current row of the result set for the ** [prepared statement] S into a 64-bit signed integer and ** returns the lower 32 bits of that integer. ** ** {F13818} The [sqlite3_column_int64(S,N)] interface converts the ** Nth column in the current row of the result set for the ** [prepared statement] S into a 64-bit signed integer and ** returns a copy of that integer. ** ** {F13821} The [sqlite3_column_text(S,N)] interface converts the ** Nth column in the current row of the result set for ** the [prepared statement] S into a zero-terminated UTF-8 ** string and returns a pointer to that string. ** ** {F13824} The [sqlite3_column_text16(S,N)] interface converts the ** Nth column in the current row of the result set for the ** [prepared statement] S into a zero-terminated 2-byte ** aligned UTF-16 native byte order string and returns ** a pointer to that string. ** ** {F13827} The [sqlite3_column_type(S,N)] interface returns ** one of [SQLITE_NULL], [SQLITE_INTEGER], [SQLITE_FLOAT], ** [SQLITE_TEXT], or [SQLITE_BLOB] as appropriate for ** the Nth column in the current row of the result set for ** the [prepared statement] S. ** ** {F13830} The [sqlite3_column_value(S,N)] interface returns a ** pointer to an [unprotected sqlite3_value] object for the ** Nth column in the current row of the result set for ** the [prepared statement] S. */ SQLITE_API const void *sqlite3_column_blob(sqlite3_stmt*, int iCol); SQLITE_API int sqlite3_column_bytes(sqlite3_stmt*, int iCol); SQLITE_API int sqlite3_column_bytes16(sqlite3_stmt*, int iCol); ................................................................................ SQLITE_API sqlite3_int64 sqlite3_column_int64(sqlite3_stmt*, int iCol); SQLITE_API const unsigned char *sqlite3_column_text(sqlite3_stmt*, int iCol); SQLITE_API const void *sqlite3_column_text16(sqlite3_stmt*, int iCol); SQLITE_API int sqlite3_column_type(sqlite3_stmt*, int iCol); SQLITE_API sqlite3_value *sqlite3_column_value(sqlite3_stmt*, int iCol); /* ** CAPI3REF: Destroy A Prepared Statement Object {F13300} ** ** The sqlite3_finalize() function is called to delete a [prepared statement]. ** If the statement was executed successfully or not executed at all, then ** SQLITE_OK is returned. If execution of the statement failed then an ** [error code] or [extended error code] is returned. ** ** This routine can be called at any point during the execution of the ................................................................................ ** encountering an error or an [sqlite3_interrupt | interrupt]. ** Incomplete updates may be rolled back and transactions canceled, ** depending on the circumstances, and the ** [error code] returned will be [SQLITE_ABORT]. ** ** INVARIANTS: ** ** {F11302} The [sqlite3_finalize(S)] interface destroys the ** [prepared statement] S and releases all ** memory and file resources held by that object. ** ** {F11304} If the most recent call to [sqlite3_step(S)] for the ** [prepared statement] S returned an error, ** then [sqlite3_finalize(S)] returns that same error. */ SQLITE_API int sqlite3_finalize(sqlite3_stmt *pStmt); /* ** CAPI3REF: Reset A Prepared Statement Object {F13330} ** ** The sqlite3_reset() function is called to reset a [prepared statement] ** object back to its initial state, ready to be re-executed. ** Any SQL statement variables that had values bound to them using ** the [sqlite3_bind_blob | sqlite3_bind_*() API] retain their values. ** Use [sqlite3_clear_bindings()] to reset the bindings. ** ** {F11332} The [sqlite3_reset(S)] interface resets the [prepared statement] S ** back to the beginning of its program. ** ** {F11334} If the most recent call to [sqlite3_step(S)] for the ** [prepared statement] S returned [SQLITE_ROW] or [SQLITE_DONE], ** or if [sqlite3_step(S)] has never before been called on S, ** then [sqlite3_reset(S)] returns [SQLITE_OK]. ** ** {F11336} If the most recent call to [sqlite3_step(S)] for the ** [prepared statement] S indicated an error, then ** [sqlite3_reset(S)] returns an appropriate [error code]. ** ** {F11338} The [sqlite3_reset(S)] interface does not change the values ** of any [sqlite3_bind_blob|bindings] on the [prepared statement] S. */ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt); /* ** CAPI3REF: Create Or Redefine SQL Functions {F16100} ** KEYWORDS: {function creation routines} ** KEYWORDS: {application-defined SQL function} ** KEYWORDS: {application-defined SQL functions} ** ** These two functions (collectively known as "function creation routines") ** are used to add SQL functions or aggregates or to redefine the behavior ** of existing SQL functions or aggregates. The only difference between the ................................................................................ ** functions with the same name but with either differing numbers of ** arguments or differing preferred text encodings. SQLite will use ** the implementation most closely matches the way in which the ** SQL function is used. ** ** INVARIANTS: ** ** {F16103} The [sqlite3_create_function16()] interface behaves exactly ** like [sqlite3_create_function()] in every way except that it ** interprets the zFunctionName argument as zero-terminated UTF-16 ** native byte order instead of as zero-terminated UTF-8. ** ** {F16106} A successful invocation of ** the [sqlite3_create_function(D,X,N,E,...)] interface registers ** or replaces callback functions in the [database connection] D ** used to implement the SQL function named X with N parameters ** and having a preferred text encoding of E. ** ** {F16109} A successful call to [sqlite3_create_function(D,X,N,E,P,F,S,L)] ** replaces the P, F, S, and L values from any prior calls with ** the same D, X, N, and E values. ** ** {F16112} The [sqlite3_create_function(D,X,...)] interface fails with ** a return code of [SQLITE_ERROR] if the SQL function name X is ** longer than 255 bytes exclusive of the zero terminator. ** ** {F16118} Either F must be NULL and S and L are non-NULL or else F ** is non-NULL and S and L are NULL, otherwise ** [sqlite3_create_function(D,X,N,E,P,F,S,L)] returns [SQLITE_ERROR]. ** ** {F16121} The [sqlite3_create_function(D,...)] interface fails with an ** error code of [SQLITE_BUSY] if there exist [prepared statements] ** associated with the [database connection] D. ** ** {F16124} The [sqlite3_create_function(D,X,N,...)] interface fails with an ** error code of [SQLITE_ERROR] if parameter N (specifying the number ** of arguments to the SQL function being registered) is less ** than -1 or greater than 127. ** ** {F16127} When N is non-negative, the [sqlite3_create_function(D,X,N,...)] ** interface causes callbacks to be invoked for the SQL function ** named X when the number of arguments to the SQL function is ** exactly N. ** ** {F16130} When N is -1, the [sqlite3_create_function(D,X,N,...)] ** interface causes callbacks to be invoked for the SQL function ** named X with any number of arguments. ** ** {F16133} When calls to [sqlite3_create_function(D,X,N,...)] ** specify multiple implementations of the same function X ** and when one implementation has N>=0 and the other has N=(-1) ** the implementation with a non-zero N is preferred. ** ** {F16136} When calls to [sqlite3_create_function(D,X,N,E,...)] ** specify multiple implementations of the same function X with ** the same number of arguments N but with different ** encodings E, then the implementation where E matches the ** database encoding is preferred. ** ** {F16139} For an aggregate SQL function created using ** [sqlite3_create_function(D,X,N,E,P,0,S,L)] the finalizer ** function L will always be invoked exactly once if the ** step function S is called one or more times. ** ** {F16142} When SQLite invokes either the xFunc or xStep function of ** an application-defined SQL function or aggregate created ** by [sqlite3_create_function()] or [sqlite3_create_function16()], ** then the array of [sqlite3_value] objects passed as the ** third parameter are always [protected sqlite3_value] objects. */ SQLITE_API int sqlite3_create_function( sqlite3 *db, ................................................................................ void *pApp, void (*xFunc)(sqlite3_context*,int,sqlite3_value**), void (*xStep)(sqlite3_context*,int,sqlite3_value**), void (*xFinal)(sqlite3_context*) ); /* ** CAPI3REF: Text Encodings {F10267} ** ** These constant define integer codes that represent the various ** text encodings supported by SQLite. */ #define SQLITE_UTF8 1 #define SQLITE_UTF16LE 2 #define SQLITE_UTF16BE 3 #define SQLITE_UTF16 4 /* Use native byte order */ #define SQLITE_ANY 5 /* sqlite3_create_function only */ #define SQLITE_UTF16_ALIGNED 8 /* sqlite3_create_collation only */ /* ** CAPI3REF: Obsolete Functions ** ** These functions are all now obsolete. In order to maintain ** backwards compatibility with older code, we continue to support ** these functions. However, new development projects should avoid ** the use of these functions. To help encourage people to avoid ** using these functions, we are not going to tell you want they do. */ SQLITE_API int sqlite3_aggregate_count(sqlite3_context*); SQLITE_API int sqlite3_expired(sqlite3_stmt*); SQLITE_API int sqlite3_transfer_bindings(sqlite3_stmt*, sqlite3_stmt*); SQLITE_API int sqlite3_global_recover(void); SQLITE_API void sqlite3_thread_cleanup(void); SQLITE_API int sqlite3_memory_alarm(void(*)(void*,sqlite3_int64,int),void*,sqlite3_int64); /* ** CAPI3REF: Obtaining SQL Function Parameter Values {F15100} ** ** The C-language implementation of SQL functions and aggregates uses ** this set of interface routines to access the parameter values on ** the function or aggregate. ** ** The xFunc (for scalar functions) or xStep (for aggregates) parameters ** to [sqlite3_create_function()] and [sqlite3_create_function16()] ................................................................................ ** or [sqlite3_value_text16()]. ** ** These routines must be called from the same thread as ** the SQL function that supplied the [sqlite3_value*] parameters. ** ** INVARIANTS: ** ** {F15103} The [sqlite3_value_blob(V)] interface converts the ** [protected sqlite3_value] object V into a BLOB and then ** returns a pointer to the converted value. ** ** {F15106} The [sqlite3_value_bytes(V)] interface returns the ** number of bytes in the BLOB or string (exclusive of the ** zero terminator on the string) that was returned by the ** most recent call to [sqlite3_value_blob(V)] or ** [sqlite3_value_text(V)]. ** ** {F15109} The [sqlite3_value_bytes16(V)] interface returns the ** number of bytes in the string (exclusive of the ** zero terminator on the string) that was returned by the ** most recent call to [sqlite3_value_text16(V)], ** [sqlite3_value_text16be(V)], or [sqlite3_value_text16le(V)]. ** ** {F15112} The [sqlite3_value_double(V)] interface converts the ** [protected sqlite3_value] object V into a floating point value and ** returns a copy of that value. ** ** {F15115} The [sqlite3_value_int(V)] interface converts the ** [protected sqlite3_value] object V into a 64-bit signed integer and ** returns the lower 32 bits of that integer. ** ** {F15118} The [sqlite3_value_int64(V)] interface converts the ** [protected sqlite3_value] object V into a 64-bit signed integer and ** returns a copy of that integer. ** ** {F15121} The [sqlite3_value_text(V)] interface converts the ** [protected sqlite3_value] object V into a zero-terminated UTF-8 ** string and returns a pointer to that string. ** ** {F15124} The [sqlite3_value_text16(V)] interface converts the ** [protected sqlite3_value] object V into a zero-terminated 2-byte ** aligned UTF-16 native byte order ** string and returns a pointer to that string. ** ** {F15127} The [sqlite3_value_text16be(V)] interface converts the ** [protected sqlite3_value] object V into a zero-terminated 2-byte ** aligned UTF-16 big-endian ** string and returns a pointer to that string. ** ** {F15130} The [sqlite3_value_text16le(V)] interface converts the ** [protected sqlite3_value] object V into a zero-terminated 2-byte ** aligned UTF-16 little-endian ** string and returns a pointer to that string. ** ** {F15133} The [sqlite3_value_type(V)] interface returns ** one of [SQLITE_NULL], [SQLITE_INTEGER], [SQLITE_FLOAT], ** [SQLITE_TEXT], or [SQLITE_BLOB] as appropriate for ** the [sqlite3_value] object V. ** ** {F15136} The [sqlite3_value_numeric_type(V)] interface converts ** the [protected sqlite3_value] object V into either an integer or ** a floating point value if it can do so without loss of ** information, and returns one of [SQLITE_NULL], ** [SQLITE_INTEGER], [SQLITE_FLOAT], [SQLITE_TEXT], or ** [SQLITE_BLOB] as appropriate for the ** [protected sqlite3_value] object V after the conversion attempt. */ ................................................................................ SQLITE_API const void *sqlite3_value_text16(sqlite3_value*); SQLITE_API const void *sqlite3_value_text16le(sqlite3_value*); SQLITE_API const void *sqlite3_value_text16be(sqlite3_value*); SQLITE_API int sqlite3_value_type(sqlite3_value*); SQLITE_API int sqlite3_value_numeric_type(sqlite3_value*); /* ** CAPI3REF: Obtain Aggregate Function Context {F16210} ** ** The implementation of aggregate SQL functions use this routine to allocate ** a structure for storing their state. ** ** The first time the sqlite3_aggregate_context() routine is called for a ** particular aggregate, SQLite allocates nBytes of memory, zeroes out that ** memory, and returns a pointer to it. On second and subsequent calls to ................................................................................ ** to the callback routine that implements the aggregate function. ** ** This routine must be called from the same thread in which ** the aggregate SQL function is running. ** ** INVARIANTS: ** ** {F16211} The first invocation of [sqlite3_aggregate_context(C,N)] for ** a particular instance of an aggregate function (for a particular ** context C) causes SQLite to allocate N bytes of memory, ** zero that memory, and return a pointer to the allocated memory. ** ** {F16213} If a memory allocation error occurs during ** [sqlite3_aggregate_context(C,N)] then the function returns 0. ** ** {F16215} Second and subsequent invocations of ** [sqlite3_aggregate_context(C,N)] for the same context pointer C ** ignore the N parameter and return a pointer to the same ** block of memory returned by the first invocation. ** ** {F16217} The memory allocated by [sqlite3_aggregate_context(C,N)] is ** automatically freed on the next call to [sqlite3_reset()] ** or [sqlite3_finalize()] for the [prepared statement] containing ** the aggregate function associated with context C. */ SQLITE_API void *sqlite3_aggregate_context(sqlite3_context*, int nBytes); /* ** CAPI3REF: User Data For Functions {F16240} ** ** The sqlite3_user_data() interface returns a copy of ** the pointer that was the pUserData parameter (the 5th parameter) ** of the [sqlite3_create_function()] ** and [sqlite3_create_function16()] routines that originally ** registered the application defined function. {END} ** ** This routine must be called from the same thread in which ** the application-defined function is running. ** ** INVARIANTS: ** ** {F16243} The [sqlite3_user_data(C)] interface returns a copy of the ** P pointer from the [sqlite3_create_function(D,X,N,E,P,F,S,L)] ** or [sqlite3_create_function16(D,X,N,E,P,F,S,L)] call that ** registered the SQL function associated with [sqlite3_context] C. */ SQLITE_API void *sqlite3_user_data(sqlite3_context*); /* ** CAPI3REF: Database Connection For Functions {F16250} ** ** The sqlite3_context_db_handle() interface returns a copy of ** the pointer to the [database connection] (the 1st parameter) ** of the [sqlite3_create_function()] ** and [sqlite3_create_function16()] routines that originally ** registered the application defined function. ** ** INVARIANTS: ** ** {F16253} The [sqlite3_context_db_handle(C)] interface returns a copy of the ** D pointer from the [sqlite3_create_function(D,X,N,E,P,F,S,L)] ** or [sqlite3_create_function16(D,X,N,E,P,F,S,L)] call that ** registered the SQL function associated with [sqlite3_context] C. */ SQLITE_API sqlite3 *sqlite3_context_db_handle(sqlite3_context*); /* ** CAPI3REF: Function Auxiliary Data {F16270} ** ** The following two functions may be used by scalar SQL functions to ** associate metadata with argument values. If the same value is passed to ** multiple invocations of the same SQL function during query execution, under ** some circumstances the associated metadata may be preserved. This may ** be used, for example, to add a regular-expression matching scalar ** function. The compiled version of the regular expression is stored as ................................................................................ ** values and SQL variables. ** ** These routines must be called from the same thread in which ** the SQL function is running. ** ** INVARIANTS: ** ** {F16272} The [sqlite3_get_auxdata(C,N)] interface returns a pointer ** to metadata associated with the Nth parameter of the SQL function ** whose context is C, or NULL if there is no metadata associated ** with that parameter. ** ** {F16274} The [sqlite3_set_auxdata(C,N,P,D)] interface assigns a metadata ** pointer P to the Nth parameter of the SQL function with context C. ** ** {F16276} SQLite will invoke the destructor D with a single argument ** which is the metadata pointer P following a call to ** [sqlite3_set_auxdata(C,N,P,D)] when SQLite ceases to hold ** the metadata. ** ** {F16277} SQLite ceases to hold metadata for an SQL function parameter ** when the value of that parameter changes. ** ** {F16278} When [sqlite3_set_auxdata(C,N,P,D)] is invoked, the destructor ** is called for any prior metadata associated with the same function ** context C and parameter N. ** ** {F16279} SQLite will call destructors for any metadata it is holding ** in a particular [prepared statement] S when either ** [sqlite3_reset(S)] or [sqlite3_finalize(S)] is called. */ SQLITE_API void *sqlite3_get_auxdata(sqlite3_context*, int N); SQLITE_API void sqlite3_set_auxdata(sqlite3_context*, int N, void*, void (*)(void*)); /* ** CAPI3REF: Constants Defining Special Destructor Behavior {F10280} ** ** These are special values for the destructor that is passed in as the ** final argument to routines like [sqlite3_result_blob()]. If the destructor ** argument is SQLITE_STATIC, it means that the content pointer is constant ** and will never change. It does not need to be destroyed. The ** SQLITE_TRANSIENT value means that the content will likely change in ** the near future and that SQLite should make its own private copy of ................................................................................ ** C++ compilers. See ticket #2191. */ typedef void (*sqlite3_destructor_type)(void*); #define SQLITE_STATIC ((sqlite3_destructor_type)0) #define SQLITE_TRANSIENT ((sqlite3_destructor_type)-1) /* ** CAPI3REF: Setting The Result Of An SQL Function {F16400} ** ** These routines are used by the xFunc or xFinal callbacks that ** implement SQL functions and aggregates. See ** [sqlite3_create_function()] and [sqlite3_create_function16()] ** for additional information. ** ** These functions work very much like the [parameter binding] family of ................................................................................ ** ** If these routines are called from within the different thread ** than the one containing the application-defined function that received ** the [sqlite3_context] pointer, the results are undefined. ** ** INVARIANTS: ** ** {F16403} The default return value from any SQL function is NULL. ** ** {F16406} The [sqlite3_result_blob(C,V,N,D)] interface changes the ** return value of function C to be a BLOB that is N bytes ** in length and with content pointed to by V. ** ** {F16409} The [sqlite3_result_double(C,V)] interface changes the ** return value of function C to be the floating point value V. ** ** {F16412} The [sqlite3_result_error(C,V,N)] interface changes the return ** value of function C to be an exception with error code ** [SQLITE_ERROR] and a UTF-8 error message copied from V up to the ** first zero byte or until N bytes are read if N is positive. ** ** {F16415} The [sqlite3_result_error16(C,V,N)] interface changes the return ** value of function C to be an exception with error code ** [SQLITE_ERROR] and a UTF-16 native byte order error message ** copied from V up to the first zero terminator or until N bytes ** are read if N is positive. ** ** {F16418} The [sqlite3_result_error_toobig(C)] interface changes the return ** value of the function C to be an exception with error code ** [SQLITE_TOOBIG] and an appropriate error message. ** ** {F16421} The [sqlite3_result_error_nomem(C)] interface changes the return ** value of the function C to be an exception with error code ** [SQLITE_NOMEM] and an appropriate error message. ** ** {F16424} The [sqlite3_result_error_code(C,E)] interface changes the return ** value of the function C to be an exception with error code E. ** The error message text is unchanged. ** ** {F16427} The [sqlite3_result_int(C,V)] interface changes the ** return value of function C to be the 32-bit integer value V. ** ** {F16430} The [sqlite3_result_int64(C,V)] interface changes the ** return value of function C to be the 64-bit integer value V. ** ** {F16433} The [sqlite3_result_null(C)] interface changes the ** return value of function C to be NULL. ** ** {F16436} The [sqlite3_result_text(C,V,N,D)] interface changes the ** return value of function C to be the UTF-8 string ** V up to the first zero if N is negative ** or the first N bytes of V if N is non-negative. ** ** {F16439} The [sqlite3_result_text16(C,V,N,D)] interface changes the ** return value of function C to be the UTF-16 native byte order ** string V up to the first zero if N is negative ** or the first N bytes of V if N is non-negative. ** ** {F16442} The [sqlite3_result_text16be(C,V,N,D)] interface changes the ** return value of function C to be the UTF-16 big-endian ** string V up to the first zero if N is negative ** or the first N bytes or V if N is non-negative. ** ** {F16445} The [sqlite3_result_text16le(C,V,N,D)] interface changes the ** return value of function C to be the UTF-16 little-endian ** string V up to the first zero if N is negative ** or the first N bytes of V if N is non-negative. ** ** {F16448} The [sqlite3_result_value(C,V)] interface changes the ** return value of function C to be the [unprotected sqlite3_value] ** object V. ** ** {F16451} The [sqlite3_result_zeroblob(C,N)] interface changes the ** return value of function C to be an N-byte BLOB of all zeros. ** ** {F16454} The [sqlite3_result_error()] and [sqlite3_result_error16()] ** interfaces make a copy of their error message strings before ** returning. ** ** {F16457} If the D destructor parameter to [sqlite3_result_blob(C,V,N,D)], ** [sqlite3_result_text(C,V,N,D)], [sqlite3_result_text16(C,V,N,D)], ** [sqlite3_result_text16be(C,V,N,D)], or ** [sqlite3_result_text16le(C,V,N,D)] is the constant [SQLITE_STATIC] ** then no destructor is ever called on the pointer V and SQLite ** assumes that V is immutable. ** ** {F16460} If the D destructor parameter to [sqlite3_result_blob(C,V,N,D)], ** [sqlite3_result_text(C,V,N,D)], [sqlite3_result_text16(C,V,N,D)], ** [sqlite3_result_text16be(C,V,N,D)], or ** [sqlite3_result_text16le(C,V,N,D)] is the constant ** [SQLITE_TRANSIENT] then the interfaces makes a copy of the ** content of V and retains the copy. ** ** {F16463} If the D destructor parameter to [sqlite3_result_blob(C,V,N,D)], ** [sqlite3_result_text(C,V,N,D)], [sqlite3_result_text16(C,V,N,D)], ** [sqlite3_result_text16be(C,V,N,D)], or ** [sqlite3_result_text16le(C,V,N,D)] is some value other than ** the constants [SQLITE_STATIC] and [SQLITE_TRANSIENT] then ** SQLite will invoke the destructor D with V as its only argument ** when it has finished with the V value. */ ................................................................................ SQLITE_API void sqlite3_result_text16(sqlite3_context*, const void*, int, void(*)(void*)); SQLITE_API void sqlite3_result_text16le(sqlite3_context*, const void*, int,void(*)(void*)); SQLITE_API void sqlite3_result_text16be(sqlite3_context*, const void*, int,void(*)(void*)); SQLITE_API void sqlite3_result_value(sqlite3_context*, sqlite3_value*); SQLITE_API void sqlite3_result_zeroblob(sqlite3_context*, int n); /* ** CAPI3REF: Define New Collating Sequences {F16600} ** ** These functions are used to add new collation sequences to the ** [database connection] specified as the first argument. ** ** The name of the new collation sequence is specified as a UTF-8 string ** for sqlite3_create_collation() and sqlite3_create_collation_v2() ** and a UTF-16 string for sqlite3_create_collation16(). In all cases ................................................................................ ** of the sqlite3_create_collation_v2(). ** Collations are destroyed when they are overridden by later calls to the ** collation creation functions or when the [database connection] is closed ** using [sqlite3_close()]. ** ** INVARIANTS: ** ** {F16603} A successful call to the ** [sqlite3_create_collation_v2(B,X,E,P,F,D)] interface ** registers function F as the comparison function used to ** implement collation X on the [database connection] B for ** databases having encoding E. ** ** {F16604} SQLite understands the X parameter to ** [sqlite3_create_collation_v2(B,X,E,P,F,D)] as a zero-terminated ** UTF-8 string in which case is ignored for ASCII characters and ** is significant for non-ASCII characters. ** ** {F16606} Successive calls to [sqlite3_create_collation_v2(B,X,E,P,F,D)] ** with the same values for B, X, and E, override prior values ** of P, F, and D. ** ** {F16609} If the destructor D in [sqlite3_create_collation_v2(B,X,E,P,F,D)] ** is not NULL then it is called with argument P when the ** collating function is dropped by SQLite. ** ** {F16612} A collating function is dropped when it is overloaded. ** ** {F16615} A collating function is dropped when the database connection ** is closed using [sqlite3_close()]. ** ** {F16618} The pointer P in [sqlite3_create_collation_v2(B,X,E,P,F,D)] ** is passed through as the first parameter to the comparison ** function F for all subsequent invocations of F. ** ** {F16621} A call to [sqlite3_create_collation(B,X,E,P,F)] is exactly ** the same as a call to [sqlite3_create_collation_v2()] with ** the same parameters and a NULL destructor. ** ** {F16624} Following a [sqlite3_create_collation_v2(B,X,E,P,F,D)], ** SQLite uses the comparison function F for all text comparison ** operations on the [database connection] B on text values that ** use the collating sequence named X. ** ** {F16627} The [sqlite3_create_collation16(B,X,E,P,F)] works the same ** as [sqlite3_create_collation(B,X,E,P,F)] except that the ** collation name X is understood as UTF-16 in native byte order ** instead of UTF-8. ** ** {F16630} When multiple comparison functions are available for the same ** collating sequence, SQLite chooses the one whose text encoding ** requires the least amount of conversion from the default ** text encoding of the database. */ SQLITE_API int sqlite3_create_collation( sqlite3*, const char *zName, ................................................................................ const void *zName, int eTextRep, void*, int(*xCompare)(void*,int,const void*,int,const void*) ); /* ** CAPI3REF: Collation Needed Callbacks {F16700} ** ** To avoid having to register all collation sequences before a database ** can be used, a single callback function may be registered with the ** [database connection] to be called whenever an undefined collation ** sequence is required. ** ** If the function is registered using the sqlite3_collation_needed() API, ** then it is passed the names of undefined collation sequences as strings ** encoded in UTF-8. {F16703} If sqlite3_collation_needed16() is used, ** the names are passed as UTF-16 in machine native byte order. ** A call to either function replaces any existing callback. ** ** When the callback is invoked, the first argument passed is a copy ** of the second argument to sqlite3_collation_needed() or ** sqlite3_collation_needed16(). The second argument is the database ** connection. The third argument is one of [SQLITE_UTF8], [SQLITE_UTF16BE], ................................................................................ ** ** The callback function should register the desired collation using ** [sqlite3_create_collation()], [sqlite3_create_collation16()], or ** [sqlite3_create_collation_v2()]. ** ** INVARIANTS: ** ** {F16702} A successful call to [sqlite3_collation_needed(D,P,F)] ** or [sqlite3_collation_needed16(D,P,F)] causes ** the [database connection] D to invoke callback F with first ** parameter P whenever it needs a comparison function for a ** collating sequence that it does not know about. ** ** {F16704} Each successful call to [sqlite3_collation_needed()] or ** [sqlite3_collation_needed16()] overrides the callback registered ** on the same [database connection] by prior calls to either ** interface. ** ** {F16706} The name of the requested collating function passed in the ** 4th parameter to the callback is in UTF-8 if the callback ** was registered using [sqlite3_collation_needed()] and ** is in UTF-16 native byte order if the callback was ** registered using [sqlite3_collation_needed16()]. */ SQLITE_API int sqlite3_collation_needed( sqlite3*, ................................................................................ */ SQLITE_API int sqlite3_rekey( sqlite3 *db, /* Database to be rekeyed */ const void *pKey, int nKey /* The new key */ ); /* ** CAPI3REF: Suspend Execution For A Short Time {F10530} ** ** The sqlite3_sleep() function causes the current thread to suspend execution ** for at least a number of milliseconds specified in its parameter. ** ** If the operating system does not support sleep requests with ** millisecond time resolution, then the time will be rounded up to ** the nearest second. The number of milliseconds of sleep actually ................................................................................ ** requested from the operating system is returned. ** ** SQLite implements this interface by calling the xSleep() ** method of the default [sqlite3_vfs] object. ** ** INVARIANTS: ** ** {F10533} The [sqlite3_sleep(M)] interface invokes the xSleep ** method of the default [sqlite3_vfs|VFS] in order to ** suspend execution of the current thread for at least ** M milliseconds. ** ** {F10536} The [sqlite3_sleep(M)] interface returns the number of ** milliseconds of sleep actually requested of the operating ** system, which might be larger than the parameter M. */ SQLITE_API int sqlite3_sleep(int); /* ** CAPI3REF: Name Of The Folder Holding Temporary Files {F10310} ** ** If this global variable is made to point to a string which is ** the name of a folder (a.k.a. directory), then all temporary files ** created by SQLite will be placed in that directory. If this variable ** is a NULL pointer, then SQLite performs a search for an appropriate ** temporary file directory. ** ................................................................................ ** has been opened. It is intended that this variable be set once ** as part of process initialization and before any SQLite interface ** routines have been call and remain unchanged thereafter. */ SQLITE_API char *sqlite3_temp_directory; /* ** CAPI3REF: Test To See If The Database Is In Auto-Commit Mode {F12930} ** KEYWORDS: {autocommit mode} ** ** The sqlite3_get_autocommit() interface returns non-zero or ** zero if the given database connection is or is not in autocommit mode, ** respectively. Autocommit mode is on by default. ** Autocommit mode is disabled by a [BEGIN] statement. ** Autocommit mode is re-enabled by a [COMMIT] or [ROLLBACK]. ................................................................................ ** [SQLITE_NOMEM], [SQLITE_BUSY], and [SQLITE_INTERRUPT]) then the ** transaction might be rolled back automatically. The only way to ** find out whether SQLite automatically rolled back the transaction after ** an error is to use this function. ** ** INVARIANTS: ** ** {F12931} The [sqlite3_get_autocommit(D)] interface returns non-zero or ** zero if the [database connection] D is or is not in autocommit ** mode, respectively. ** ** {F12932} Autocommit mode is on by default. ** ** {F12933} Autocommit mode is disabled by a successful [BEGIN] statement. ** ** {F12934} Autocommit mode is enabled by a successful [COMMIT] or [ROLLBACK] ** statement. ** ** LIMITATIONS: ** ** {A12936} If another thread changes the autocommit status of the database ** connection while this routine is running, then the return value ** is undefined. */ SQLITE_API int sqlite3_get_autocommit(sqlite3*); /* ** CAPI3REF: Find The Database Handle Of A Prepared Statement {F13120} ** ** The sqlite3_db_handle interface returns the [database connection] handle ** to which a [prepared statement] belongs. The database handle returned by ** sqlite3_db_handle is the same database handle that was the first argument ** to the [sqlite3_prepare_v2()] call (or its variants) that was used to ** create the statement in the first place. ** ** INVARIANTS: ** ** {F13123} The [sqlite3_db_handle(S)] interface returns a pointer ** to the [database connection] associated with the ** [prepared statement] S. */ SQLITE_API sqlite3 *sqlite3_db_handle(sqlite3_stmt*); /* ** CAPI3REF: Find the next prepared statement {F13140} ** ** This interface returns a pointer to the next [prepared statement] after ** pStmt associated with the [database connection] pDb. If pStmt is NULL ** then this interface returns a pointer to the first prepared statement ** associated with the database connection pDb. If no prepared statement ** satisfies the conditions of this routine, it returns NULL. ** ** INVARIANTS: ** ** {F13143} If D is a [database connection] that holds one or more ** unfinalized [prepared statements] and S is a NULL pointer, ** then [sqlite3_next_stmt(D, S)] routine shall return a pointer ** to one of the prepared statements associated with D. ** ** {F13146} If D is a [database connection] that holds no unfinalized ** [prepared statements] and S is a NULL pointer, then ** [sqlite3_next_stmt(D, S)] routine shall return a NULL pointer. ** ** {F13149} If S is a [prepared statement] in the [database connection] D ** and S is not the last prepared statement in D, then ** [sqlite3_next_stmt(D, S)] routine shall return a pointer ** to the next prepared statement in D after S. ** ** {F13152} If S is the last [prepared statement] in the ** [database connection] D then the [sqlite3_next_stmt(D, S)] ** routine shall return a NULL pointer. */ SQLITE_API sqlite3_stmt *sqlite3_next_stmt(sqlite3 *pDb, sqlite3_stmt *pStmt); /* ** CAPI3REF: Commit And Rollback Notification Callbacks {F12950} ** ** The sqlite3_commit_hook() interface registers a callback ** function to be invoked whenever a transaction is committed. ** Any callback set by a previous call to sqlite3_commit_hook() ** for the same database connection is overridden. ** The sqlite3_rollback_hook() interface registers a callback ** function to be invoked whenever a transaction is committed. ................................................................................ ** automatically rolled back because the database connection is closed. ** The rollback callback is not invoked if a transaction is ** rolled back because a commit callback returned non-zero. ** <todo> Check on this </todo> ** ** INVARIANTS: ** ** {F12951} The [sqlite3_commit_hook(D,F,P)] interface registers the ** callback function F to be invoked with argument P whenever ** a transaction commits on the [database connection] D. ** ** {F12952} The [sqlite3_commit_hook(D,F,P)] interface returns the P argument ** from the previous call with the same [database connection] D, ** or NULL on the first call for a particular database connection D. ** ** {F12953} Each call to [sqlite3_commit_hook()] overwrites the callback ** registered by prior calls. ** ** {F12954} If the F argument to [sqlite3_commit_hook(D,F,P)] is NULL ** then the commit hook callback is canceled and no callback ** is invoked when a transaction commits. ** ** {F12955} If the commit callback returns non-zero then the commit is ** converted into a rollback. ** ** {F12961} The [sqlite3_rollback_hook(D,F,P)] interface registers the ** callback function F to be invoked with argument P whenever ** a transaction rolls back on the [database connection] D. ** ** {F12962} The [sqlite3_rollback_hook(D,F,P)] interface returns the P ** argument from the previous call with the same ** [database connection] D, or NULL on the first call ** for a particular database connection D. ** ** {F12963} Each call to [sqlite3_rollback_hook()] overwrites the callback ** registered by prior calls. ** ** {F12964} If the F argument to [sqlite3_rollback_hook(D,F,P)] is NULL ** then the rollback hook callback is canceled and no callback ** is invoked when a transaction rolls back. */ SQLITE_API void *sqlite3_commit_hook(sqlite3*, int(*)(void*), void*); SQLITE_API void *sqlite3_rollback_hook(sqlite3*, void(*)(void *), void*); /* ** CAPI3REF: Data Change Notification Callbacks {F12970} ** ** The sqlite3_update_hook() interface registers a callback function ** with the [database connection] identified by the first argument ** to be invoked whenever a row is updated, inserted or deleted. ** Any callback set by a previous call to this function ** for the same database connection is overridden. ** ................................................................................ ** modified (i.e. sqlite_master and sqlite_sequence). ** ** If another function was previously registered, its pArg value ** is returned. Otherwise NULL is returned. ** ** INVARIANTS: ** ** {F12971} The [sqlite3_update_hook(D,F,P)] interface causes the callback ** function F to be invoked with first parameter P whenever ** a table row is modified, inserted, or deleted on ** the [database connection] D. ** ** {F12973} The [sqlite3_update_hook(D,F,P)] interface returns the value ** of P for the previous call on the same [database connection] D, ** or NULL for the first call. ** ** {F12975} If the update hook callback F in [sqlite3_update_hook(D,F,P)] ** is NULL then the no update callbacks are made. ** ** {F12977} Each call to [sqlite3_update_hook(D,F,P)] overrides prior calls ** to the same interface on the same [database connection] D. ** ** {F12979} The update hook callback is not invoked when internal system ** tables such as sqlite_master and sqlite_sequence are modified. ** ** {F12981} The second parameter to the update callback ** is one of [SQLITE_INSERT], [SQLITE_DELETE] or [SQLITE_UPDATE], ** depending on the operation that caused the callback to be invoked. ** ** {F12983} The third and fourth arguments to the callback contain pointers ** to zero-terminated UTF-8 strings which are the names of the ** database and table that is being updated. ** {F12985} The final callback parameter is the rowid of the row after ** the change occurs. */ SQLITE_API void *sqlite3_update_hook( sqlite3*, void(*)(void *,int ,char const *,char const *,sqlite3_int64), void* ); /* ** CAPI3REF: Enable Or Disable Shared Pager Cache {F10330} ** KEYWORDS: {shared cache} {shared cache mode} ** ** This routine enables or disables the sharing of the database cache ** and schema data structures between [database connection | connections] ** to the same database. Sharing is enabled if the argument is true ** and disabled if the argument is false. ** ................................................................................ ** ** Shared cache is disabled by default. But this might change in ** future releases of SQLite. Applications that care about shared ** cache setting should set it explicitly. ** ** INVARIANTS: ** ** {F10331} A successful invocation of [sqlite3_enable_shared_cache(B)] ** will enable or disable shared cache mode for any subsequently ** created [database connection] in the same process. ** ** {F10336} When shared cache is enabled, the [sqlite3_create_module()] ** interface will always return an error. ** ** {F10337} The [sqlite3_enable_shared_cache(B)] interface returns ** [SQLITE_OK] if shared cache was enabled or disabled successfully. ** ** {F10339} Shared cache is disabled by default. */ SQLITE_API int sqlite3_enable_shared_cache(int); /* ** CAPI3REF: Attempt To Free Heap Memory {F17340} ** ** The sqlite3_release_memory() interface attempts to free N bytes ** of heap memory by deallocating non-essential memory allocations ** held by the database library. {END} Memory used to cache database ** pages to improve performance is an example of non-essential memory. ** sqlite3_release_memory() returns the number of bytes actually freed, ** which might be more or less than the amount requested. ** ** INVARIANTS: ** ** {F17341} The [sqlite3_release_memory(N)] interface attempts to ** free N bytes of heap memory by deallocating non-essential ** memory allocations held by the database library. ** ** {F16342} The [sqlite3_release_memory(N)] returns the number ** of bytes actually freed, which might be more or less ** than the amount requested. */ SQLITE_API int sqlite3_release_memory(int); /* ** CAPI3REF: Impose A Limit On Heap Size {F17350} ** ** The sqlite3_soft_heap_limit() interface places a "soft" limit ** on the amount of heap memory that may be allocated by SQLite. ** If an internal allocation is requested that would exceed the ** soft heap limit, [sqlite3_release_memory()] is invoked one or ** more times to free up some space before the allocation is performed. ** ................................................................................ ** applied to all threads. The value specified for the soft heap limit ** is an upper bound on the total memory allocation for all threads. In ** version 3.5.0 there is no mechanism for limiting the heap usage for ** individual threads. ** ** INVARIANTS: ** ** {F16351} The [sqlite3_soft_heap_limit(N)] interface places a soft limit ** of N bytes on the amount of heap memory that may be allocated ** using [sqlite3_malloc()] or [sqlite3_realloc()] at any point ** in time. ** ** {F16352} If a call to [sqlite3_malloc()] or [sqlite3_realloc()] would ** cause the total amount of allocated memory to exceed the ** soft heap limit, then [sqlite3_release_memory()] is invoked ** in an attempt to reduce the memory usage prior to proceeding ** with the memory allocation attempt. ** ** {F16353} Calls to [sqlite3_malloc()] or [sqlite3_realloc()] that trigger ** attempts to reduce memory usage through the soft heap limit ** mechanism continue even if the attempt to reduce memory ** usage is unsuccessful. ** ** {F16354} A negative or zero value for N in a call to ** [sqlite3_soft_heap_limit(N)] means that there is no soft ** heap limit and [sqlite3_release_memory()] will only be ** called when memory is completely exhausted. ** ** {F16355} The default value for the soft heap limit is zero. ** ** {F16358} Each call to [sqlite3_soft_heap_limit(N)] overrides the ** values set by all prior calls. */ SQLITE_API void sqlite3_soft_heap_limit(int); /* ** CAPI3REF: Extract Metadata About A Column Of A Table {F12850} ** ** This routine returns metadata about a specific column of a specific ** database table accessible using the [database connection] handle ** passed as the first function argument. ** ** The column is identified by the second, third and fourth parameters to ** this function. The second parameter is either the name of the database ................................................................................ char const **pzCollSeq, /* OUTPUT: Collation sequence name */ int *pNotNull, /* OUTPUT: True if NOT NULL constraint exists */ int *pPrimaryKey, /* OUTPUT: True if column part of PK */ int *pAutoinc /* OUTPUT: True if column is auto-increment */ ); /* ** CAPI3REF: Load An Extension {F12600} ** ** This interface loads an SQLite extension library from the named file. ** ** {F12601} The sqlite3_load_extension() interface attempts to load an ** SQLite extension library contained in the file zFile. ** ** {F12602} The entry point is zProc. ** ** {F12603} zProc may be 0, in which case the name of the entry point ** defaults to "sqlite3_extension_init". ** ** {F12604} The sqlite3_load_extension() interface shall return ** [SQLITE_OK] on success and [SQLITE_ERROR] if something goes wrong. ** ** {F12605} If an error occurs and pzErrMsg is not 0, then the ** [sqlite3_load_extension()] interface shall attempt to ** fill *pzErrMsg with error message text stored in memory ** obtained from [sqlite3_malloc()]. {END} The calling function ** should free this memory by calling [sqlite3_free()]. ** ** {F12606} Extension loading must be enabled using ** [sqlite3_enable_load_extension()] prior to calling this API, ** otherwise an error will be returned. */ SQLITE_API int sqlite3_load_extension( sqlite3 *db, /* Load the extension into this database connection */ const char *zFile, /* Name of the shared library containing extension */ const char *zProc, /* Entry point. Derived from zFile if 0 */ char **pzErrMsg /* Put error message here if not 0 */ ); /* ** CAPI3REF: Enable Or Disable Extension Loading {F12620} ** ** So as not to open security holes in older applications that are ** unprepared to deal with extension loading, and as a means of disabling ** extension loading while evaluating user-entered SQL, the following API ** is provided to turn the [sqlite3_load_extension()] mechanism on and off. ** ** Extension loading is off by default. See ticket #1863. ** ** {F12621} Call the sqlite3_enable_load_extension() routine with onoff==1 ** to turn extension loading on and call it with onoff==0 to turn ** it back off again. ** ** {F12622} Extension loading is off by default. */ SQLITE_API int sqlite3_enable_load_extension(sqlite3 *db, int onoff); /* ** CAPI3REF: Make Arrangements To Automatically Load An Extension {F12640} ** ** This API can be invoked at program startup in order to register ** one or more statically linked extensions that will be available ** to all new [database connections]. {END} ** ** This routine stores a pointer to the extension in an array that is ** obtained from [sqlite3_malloc()]. If you run a memory leak checker ** on your program and it reports a leak because of this array, invoke ** [sqlite3_reset_auto_extension()] prior to shutdown to free the memory. ** ** {F12641} This function registers an extension entry point that is ** automatically invoked whenever a new [database connection] ** is opened using [sqlite3_open()], [sqlite3_open16()], ** or [sqlite3_open_v2()]. ** ** {F12642} Duplicate extensions are detected so calling this routine ** multiple times with the same extension is harmless. ** ** {F12643} This routine stores a pointer to the extension in an array ** that is obtained from [sqlite3_malloc()]. ** ** {F12644} Automatic extensions apply across all threads. */ SQLITE_API int sqlite3_auto_extension(void *xEntryPoint); /* ** CAPI3REF: Reset Automatic Extension Loading {F12660} ** ** This function disables all previously registered automatic ** extensions. {END} It undoes the effect of all prior ** [sqlite3_auto_extension()] calls. ** ** {F12661} This function disables all previously registered ** automatic extensions. ** ** {F12662} This function disables automatic extensions in all threads. */ SQLITE_API void sqlite3_reset_auto_extension(void); /* ****** EXPERIMENTAL - subject to change without notice ************** ** ** The interface to the virtual-table mechanism is currently considered ................................................................................ */ typedef struct sqlite3_vtab sqlite3_vtab; typedef struct sqlite3_index_info sqlite3_index_info; typedef struct sqlite3_vtab_cursor sqlite3_vtab_cursor; typedef struct sqlite3_module sqlite3_module; /* ** CAPI3REF: Virtual Table Object {F18000} ** KEYWORDS: sqlite3_module ** ** A module is a class of virtual tables. Each module is defined ** by an instance of the following structure. This structure consists ** mostly of methods for the module. ** ** This interface is experimental and is subject to change or ** removal in future releases of SQLite. ................................................................................ int (*xBegin)(sqlite3_vtab *pVTab); int (*xSync)(sqlite3_vtab *pVTab); int (*xCommit)(sqlite3_vtab *pVTab); int (*xRollback)(sqlite3_vtab *pVTab); int (*xFindFunction)(sqlite3_vtab *pVtab, int nArg, const char *zName, void (**pxFunc)(sqlite3_context*,int,sqlite3_value**), void **ppArg); int (*xRename)(sqlite3_vtab *pVtab, const char *zNew); }; /* ** CAPI3REF: Virtual Table Indexing Information {F18100} ** KEYWORDS: sqlite3_index_info ** ** The sqlite3_index_info structure and its substructures is used to ** pass information into and receive the reply from the xBestIndex ** method of an sqlite3_module. The fields under **Inputs** are the ** inputs to xBestIndex and are read-only. xBestIndex inserts its ** results into the **Outputs** fields. ** ................................................................................ int iTermOffset; /* Used internally - xBestIndex should ignore */ } *aConstraint; /* Table of WHERE clause constraints */ int nOrderBy; /* Number of terms in the ORDER BY clause */ struct sqlite3_index_orderby { int iColumn; /* Column number */ unsigned char desc; /* True for DESC. False for ASC. */ } *aOrderBy; /* The ORDER BY clause */ /* Outputs */ struct sqlite3_index_constraint_usage { int argvIndex; /* if >0, constraint is part of argv to xFilter */ unsigned char omit; /* Do not code a test for this constraint */ } *aConstraintUsage; int idxNum; /* Number used to identify the index */ char *idxStr; /* String, possibly obtained from sqlite3_malloc */ ................................................................................ #define SQLITE_INDEX_CONSTRAINT_GT 4 #define SQLITE_INDEX_CONSTRAINT_LE 8 #define SQLITE_INDEX_CONSTRAINT_LT 16 #define SQLITE_INDEX_CONSTRAINT_GE 32 #define SQLITE_INDEX_CONSTRAINT_MATCH 64 /* ** CAPI3REF: Register A Virtual Table Implementation {F18200} ** ** This routine is used to register a new module name with a ** [database connection]. Module names must be registered before ** creating new virtual tables on the module, or before using ** preexisting virtual tables of the module. ** ** This interface is experimental and is subject to change or ................................................................................ sqlite3 *db, /* SQLite connection to register module with */ const char *zName, /* Name of the module */ const sqlite3_module *, /* Methods for the module */ void * /* Client data for xCreate/xConnect */ ); /* ** CAPI3REF: Register A Virtual Table Implementation {F18210} ** ** This routine is identical to the [sqlite3_create_module()] method above, ** except that it allows a destructor function to be specified. It is ** even more experimental than the rest of the virtual tables API. */ SQLITE_API int sqlite3_create_module_v2( sqlite3 *db, /* SQLite connection to register module with */ ................................................................................ const char *zName, /* Name of the module */ const sqlite3_module *, /* Methods for the module */ void *, /* Client data for xCreate/xConnect */ void(*xDestroy)(void*) /* Module destructor function */ ); /* ** CAPI3REF: Virtual Table Instance Object {F18010} ** KEYWORDS: sqlite3_vtab ** ** Every module implementation uses a subclass of the following structure ** to describe a particular instance of the module. Each subclass will ** be tailored to the specific needs of the module implementation. ** The purpose of this superclass is to define certain fields that are ** common to all module implementations. ** ................................................................................ const sqlite3_module *pModule; /* The module for this virtual table */ int nRef; /* Used internally */ char *zErrMsg; /* Error message from sqlite3_mprintf() */ /* Virtual table implementations will typically add additional fields */ }; /* ** CAPI3REF: Virtual Table Cursor Object {F18020} ** KEYWORDS: sqlite3_vtab_cursor ** ** Every module implementation uses a subclass of the following structure ** to describe cursors that point into the virtual table and are used ** to loop through the virtual table. Cursors are created using the ** xOpen method of the module. Each module implementation will define ** the content of a cursor structure to suit its own needs. ** ................................................................................ */ struct sqlite3_vtab_cursor { sqlite3_vtab *pVtab; /* Virtual table of this cursor */ /* Virtual table implementations will typically add additional fields */ }; /* ** CAPI3REF: Declare The Schema Of A Virtual Table {F18280} ** ** The xCreate and xConnect methods of a module use the following API ** to declare the format (the names and datatypes of the columns) of ** the virtual tables they implement. ** ** This interface is experimental and is subject to change or ** removal in future releases of SQLite. */ SQLITE_API int sqlite3_declare_vtab(sqlite3*, const char *zCreateTable); /* ** CAPI3REF: Overload A Function For A Virtual Table {F18300} ** ** Virtual tables can provide alternative implementations of functions ** using the xFindFunction method. But global versions of those functions ** must exist in order to be overloaded. ** ** This API makes sure a global version of a function with a particular ** name and number of parameters exists. If no such function exists ................................................................................ ** When the virtual-table mechanism stabilizes, we will declare the ** interface fixed, support it indefinitely, and remove this comment. ** ****** EXPERIMENTAL - subject to change without notice ************** */ /* ** CAPI3REF: A Handle To An Open BLOB {F17800} ** KEYWORDS: {BLOB handle} {BLOB handles} ** ** An instance of this object represents an open BLOB on which ** [sqlite3_blob_open | incremental BLOB I/O] can be performed. ** Objects of this type are created by [sqlite3_blob_open()] ** and destroyed by [sqlite3_blob_close()]. ** The [sqlite3_blob_read()] and [sqlite3_blob_write()] interfaces ** can be used to read or write small subsections of the BLOB. ** The [sqlite3_blob_bytes()] interface returns the size of the BLOB in bytes. */ typedef struct sqlite3_blob sqlite3_blob; /* ** CAPI3REF: Open A BLOB For Incremental I/O {F17810} ** ** This interfaces opens a [BLOB handle | handle] to the BLOB located ** in row iRow, column zColumn, table zTable in database zDb; ** in other words, the same BLOB that would be selected by: ** ** <pre> ** SELECT zColumn FROM zDb.zTable WHERE rowid = iRow; ................................................................................ ** a expired BLOB handle fail with an return code of [SQLITE_ABORT]. ** Changes written into a BLOB prior to the BLOB expiring are not ** rollback by the expiration of the BLOB. Such changes will eventually ** commit if the transaction continues to completion. ** ** INVARIANTS: ** ** {F17813} A successful invocation of the [sqlite3_blob_open(D,B,T,C,R,F,P)] ** interface shall open an [sqlite3_blob] object P on the BLOB ** in column C of the table T in the database B on ** the [database connection] D. ** ** {F17814} A successful invocation of [sqlite3_blob_open(D,...)] shall start ** a new transaction on the [database connection] D if that ** connection is not already in a transaction. ** ** {F17816} The [sqlite3_blob_open(D,B,T,C,R,F,P)] interface shall open ** the BLOB for read and write access if and only if the F ** parameter is non-zero. ** ** {F17819} The [sqlite3_blob_open()] interface shall return [SQLITE_OK] on ** success and an appropriate [error code] on failure. ** ** {F17821} If an error occurs during evaluation of [sqlite3_blob_open(D,...)] ** then subsequent calls to [sqlite3_errcode(D)], ** [sqlite3_errmsg(D)], and [sqlite3_errmsg16(D)] shall return ** information appropriate for that error. ** ** {F17824} If any column in the row that a [sqlite3_blob] has open is ** changed by a separate [UPDATE] or [DELETE] statement or by ** an [ON CONFLICT] side effect, then the [sqlite3_blob] shall ** be marked as invalid. */ SQLITE_API int sqlite3_blob_open( sqlite3*, const char *zDb, ................................................................................ const char *zColumn, sqlite3_int64 iRow, int flags, sqlite3_blob **ppBlob ); /* ** CAPI3REF: Close A BLOB Handle {F17830} ** ** Closes an open [BLOB handle]. ** ** Closing a BLOB shall cause the current transaction to commit ** if there are no other BLOBs, no pending prepared statements, and the ** database connection is in [autocommit mode]. ** If any writes were made to the BLOB, they might be held in cache ** until the close operation if they will fit. {END} ** ** Closing the BLOB often forces the changes ** out to disk and so if any I/O errors occur, they will likely occur ** at the time when the BLOB is closed. {F17833} Any errors that occur during ** closing are reported as a non-zero return value. ** ** The BLOB is closed unconditionally. Even if this routine returns ** an error code, the BLOB is still closed. ** ** INVARIANTS: ** ** {F17833} The [sqlite3_blob_close(P)] interface closes an [sqlite3_blob] ** object P previously opened using [sqlite3_blob_open()]. ** ** {F17836} Closing an [sqlite3_blob] object using ** [sqlite3_blob_close()] shall cause the current transaction to ** commit if there are no other open [sqlite3_blob] objects ** or [prepared statements] on the same [database connection] and ** the database connection is in [autocommit mode]. ** ** {F17839} The [sqlite3_blob_close(P)] interfaces shall close the ** [sqlite3_blob] object P unconditionally, even if ** [sqlite3_blob_close(P)] returns something other than [SQLITE_OK]. */ SQLITE_API int sqlite3_blob_close(sqlite3_blob *); /* ** CAPI3REF: Return The Size Of An Open BLOB {F17840} ** ** Returns the size in bytes of the BLOB accessible via the open ** []BLOB handle] in its only argument. ** ** INVARIANTS: ** ** {F17843} The [sqlite3_blob_bytes(P)] interface returns the size ** in bytes of the BLOB that the [sqlite3_blob] object P ** refers to. */ SQLITE_API int sqlite3_blob_bytes(sqlite3_blob *); /* ** CAPI3REF: Read Data From A BLOB Incrementally {F17850} ** ** This function is used to read data from an open [BLOB handle] into a ** caller-supplied buffer. N bytes of data are copied into buffer Z ** from the open BLOB, starting at offset iOffset. ** ** If offset iOffset is less than N bytes from the end of the BLOB, ** [SQLITE_ERROR] is returned and no data is read. If N or iOffset is ................................................................................ ** error code of [SQLITE_ABORT]. ** ** On success, SQLITE_OK is returned. ** Otherwise, an [error code] or an [extended error code] is returned. ** ** INVARIANTS: ** ** {F17853} A successful invocation of [sqlite3_blob_read(P,Z,N,X)] ** shall reads N bytes of data out of the BLOB referenced by ** [BLOB handle] P beginning at offset X and store those bytes ** into buffer Z. ** ** {F17856} In [sqlite3_blob_read(P,Z,N,X)] if the size of the BLOB ** is less than N+X bytes, then the function shall leave the ** Z buffer unchanged and return [SQLITE_ERROR]. ** ** {F17859} In [sqlite3_blob_read(P,Z,N,X)] if X or N is less than zero ** then the function shall leave the Z buffer unchanged ** and return [SQLITE_ERROR]. ** ** {F17862} The [sqlite3_blob_read(P,Z,N,X)] interface shall return [SQLITE_OK] ** if N bytes are successfully read into buffer Z. ** ** {F17863} If the [BLOB handle] P is expired and X and N are within bounds ** then [sqlite3_blob_read(P,Z,N,X)] shall leave the Z buffer ** unchanged and return [SQLITE_ABORT]. ** ** {F17865} If the requested read could not be completed, ** the [sqlite3_blob_read(P,Z,N,X)] interface shall return an ** appropriate [error code] or [extended error code]. ** ** {F17868} If an error occurs during evaluation of [sqlite3_blob_read(P,...)] ** then subsequent calls to [sqlite3_errcode(D)], ** [sqlite3_errmsg(D)], and [sqlite3_errmsg16(D)] shall return ** information appropriate for that error, where D is the ** [database connection] that was used to open the [BLOB handle] P. */ SQLITE_API int sqlite3_blob_read(sqlite3_blob *, void *Z, int N, int iOffset); /* ** CAPI3REF: Write Data Into A BLOB Incrementally {F17870} ** ** This function is used to write data into an open [BLOB handle] from a ** caller-supplied buffer. N bytes of data are copied from the buffer Z ** into the open BLOB, starting at offset iOffset. ** ** If the [BLOB handle] passed as the first argument was not opened for ** writing (the flags parameter to [sqlite3_blob_open()] was zero), ................................................................................ ** or by other independent statements. ** ** On success, SQLITE_OK is returned. ** Otherwise, an [error code] or an [extended error code] is returned. ** ** INVARIANTS: ** ** {F17873} A successful invocation of [sqlite3_blob_write(P,Z,N,X)] ** shall write N bytes of data from buffer Z into the BLOB ** referenced by [BLOB handle] P beginning at offset X into ** the BLOB. ** ** {F17874} In the absence of other overridding changes, the changes ** written to a BLOB by [sqlite3_blob_write()] shall ** remain in effect after the associated [BLOB handle] expires. ** ** {F17875} If the [BLOB handle] P was opened for reading only then ** an invocation of [sqlite3_blob_write(P,Z,N,X)] shall leave ** the referenced BLOB unchanged and return [SQLITE_READONLY]. ** ** {F17876} If the size of the BLOB referenced by [BLOB handle] P is ** less than N+X bytes then [sqlite3_blob_write(P,Z,N,X)] shall ** leave the BLOB unchanged and return [SQLITE_ERROR]. ** ** {F17877} If the [BLOB handle] P is expired and X and N are within bounds ** then [sqlite3_blob_read(P,Z,N,X)] shall leave the BLOB ** unchanged and return [SQLITE_ABORT]. ** ** {F17879} If X or N are less than zero then [sqlite3_blob_write(P,Z,N,X)] ** shall leave the BLOB referenced by [BLOB handle] P unchanged ** and return [SQLITE_ERROR]. ** ** {F17882} The [sqlite3_blob_write(P,Z,N,X)] interface shall return ** [SQLITE_OK] if N bytes where successfully written into the BLOB. ** ** {F17885} If the requested write could not be completed, ** the [sqlite3_blob_write(P,Z,N,X)] interface shall return an ** appropriate [error code] or [extended error code]. ** ** {F17888} If an error occurs during evaluation of [sqlite3_blob_write(D,...)] ** then subsequent calls to [sqlite3_errcode(D)], ** [sqlite3_errmsg(D)], and [sqlite3_errmsg16(D)] shall return ** information appropriate for that error. */ SQLITE_API int sqlite3_blob_write(sqlite3_blob *, const void *z, int n, int iOffset); /* ** CAPI3REF: Virtual File System Objects {F11200} ** ** A virtual filesystem (VFS) is an [sqlite3_vfs] object ** that SQLite uses to interact ** with the underlying operating system. Most SQLite builds come with a ** single default VFS that is appropriate for the host computer. ** New VFSes can be registered and existing VFSes can be unregistered. ** The following interfaces are provided. ................................................................................ ** ** Unregister a VFS with the sqlite3_vfs_unregister() interface. ** If the default VFS is unregistered, another VFS is chosen as ** the default. The choice for the new VFS is arbitrary. ** ** INVARIANTS: ** ** {F11203} The [sqlite3_vfs_find(N)] interface returns a pointer to the ** registered [sqlite3_vfs] object whose name exactly matches ** the zero-terminated UTF-8 string N, or it returns NULL if ** there is no match. ** ** {F11206} If the N parameter to [sqlite3_vfs_find(N)] is NULL then ** the function returns a pointer to the default [sqlite3_vfs] ** object if there is one, or NULL if there is no default ** [sqlite3_vfs] object. ** ** {F11209} The [sqlite3_vfs_register(P,F)] interface registers the ** well-formed [sqlite3_vfs] object P using the name given ** by the zName field of the object. ** ** {F11212} Using the [sqlite3_vfs_register(P,F)] interface to register ** the same [sqlite3_vfs] object multiple times is a harmless no-op. ** ** {F11215} The [sqlite3_vfs_register(P,F)] interface makes the [sqlite3_vfs] ** object P the default [sqlite3_vfs] object if F is non-zero. ** ** {F11218} The [sqlite3_vfs_unregister(P)] interface unregisters the ** [sqlite3_vfs] object P so that it is no longer returned by ** subsequent calls to [sqlite3_vfs_find()]. */ SQLITE_API sqlite3_vfs *sqlite3_vfs_find(const char *zVfsName); SQLITE_API int sqlite3_vfs_register(sqlite3_vfs*, int makeDflt); SQLITE_API int sqlite3_vfs_unregister(sqlite3_vfs*); /* ** CAPI3REF: Mutexes {F17000} ** ** The SQLite core uses these routines for thread ** synchronization. Though they are intended for internal ** use by SQLite, code that links against SQLite is ** permitted to use any of these routines. ** ** The SQLite source code contains multiple implementations ................................................................................ ** macro defined (with "-DSQLITE_MUTEX_APPDEF=1"), then no mutex ** implementation is included with the library. In this case the ** application must supply a custom mutex implementation using the ** [SQLITE_CONFIG_MUTEX] option of the sqlite3_config() function ** before calling sqlite3_initialize() or any other public sqlite3_ ** function that calls sqlite3_initialize(). ** ** {F17011} The sqlite3_mutex_alloc() routine allocates a new ** mutex and returns a pointer to it. {F17012} If it returns NULL ** that means that a mutex could not be allocated. {F17013} SQLite ** will unwind its stack and return an error. {F17014} The argument ** to sqlite3_mutex_alloc() is one of these integer constants: ** ** <ul> ** <li> SQLITE_MUTEX_FAST ** <li> SQLITE_MUTEX_RECURSIVE ** <li> SQLITE_MUTEX_STATIC_MASTER ** <li> SQLITE_MUTEX_STATIC_MEM ** <li> SQLITE_MUTEX_STATIC_MEM2 ** <li> SQLITE_MUTEX_STATIC_PRNG ** <li> SQLITE_MUTEX_STATIC_LRU ** <li> SQLITE_MUTEX_STATIC_LRU2 ** </ul> ** ** {F17015} The first two constants cause sqlite3_mutex_alloc() to create ** a new mutex. The new mutex is recursive when SQLITE_MUTEX_RECURSIVE ** is used but not necessarily so when SQLITE_MUTEX_FAST is used. {END} ** The mutex implementation does not need to make a distinction ** between SQLITE_MUTEX_RECURSIVE and SQLITE_MUTEX_FAST if it does ** not want to. {F17016} But SQLite will only request a recursive mutex in ** cases where it really needs one. {END} If a faster non-recursive mutex ** implementation is available on the host platform, the mutex subsystem ** might return such a mutex in response to SQLITE_MUTEX_FAST. ** ** {F17017} The other allowed parameters to sqlite3_mutex_alloc() each return ** a pointer to a static preexisting mutex. {END} Four static mutexes are ** used by the current version of SQLite. Future versions of SQLite ** may add additional static mutexes. Static mutexes are for internal ** use by SQLite only. Applications that use SQLite mutexes should ** use only the dynamic mutexes returned by SQLITE_MUTEX_FAST or ** SQLITE_MUTEX_RECURSIVE. ** ** {F17018} Note that if one of the dynamic mutex parameters (SQLITE_MUTEX_FAST ** or SQLITE_MUTEX_RECURSIVE) is used then sqlite3_mutex_alloc() ** returns a different mutex on every call. {F17034} But for the static ** mutex types, the same mutex is returned on every call that has ** the same type number. ** ** {F17019} The sqlite3_mutex_free() routine deallocates a previously ** allocated dynamic mutex. {F17020} SQLite is careful to deallocate every ** dynamic mutex that it allocates. {A17021} The dynamic mutexes must not be in ** use when they are deallocated. {A17022} Attempting to deallocate a static ** mutex results in undefined behavior. {F17023} SQLite never deallocates ** a static mutex. {END} ** ** The sqlite3_mutex_enter() and sqlite3_mutex_try() routines attempt ** to enter a mutex. {F17024} If another thread is already within the mutex, ** sqlite3_mutex_enter() will block and sqlite3_mutex_try() will return ** SQLITE_BUSY. {F17025} The sqlite3_mutex_try() interface returns [SQLITE_OK] ** upon successful entry. {F17026} Mutexes created using ** SQLITE_MUTEX_RECURSIVE can be entered multiple times by the same thread. ** {F17027} In such cases the, ** mutex must be exited an equal number of times before another thread ** can enter. {A17028} If the same thread tries to enter any other ** kind of mutex more than once, the behavior is undefined. ** {F17029} SQLite will never exhibit ** such behavior in its own use of mutexes. ** ** Some systems (for example, Windows 95) do not support the operation ** implemented by sqlite3_mutex_try(). On those systems, sqlite3_mutex_try() ** will always return SQLITE_BUSY. {F17030} The SQLite core only ever uses ** sqlite3_mutex_try() as an optimization so this is acceptable behavior. ** ** {F17031} The sqlite3_mutex_leave() routine exits a mutex that was ** previously entered by the same thread. {A17032} The behavior ** is undefined if the mutex is not currently entered by the ** calling thread or is not currently allocated. {F17033} SQLite will ** never do either. {END} ** ** If the argument to sqlite3_mutex_enter(), sqlite3_mutex_try(), or ** sqlite3_mutex_leave() is a NULL pointer, then all three routines ** behave as no-ops. ** ** See also: [sqlite3_mutex_held()] and [sqlite3_mutex_notheld()]. ................................................................................ SQLITE_API sqlite3_mutex *sqlite3_mutex_alloc(int); SQLITE_API void sqlite3_mutex_free(sqlite3_mutex*); SQLITE_API void sqlite3_mutex_enter(sqlite3_mutex*); SQLITE_API int sqlite3_mutex_try(sqlite3_mutex*); SQLITE_API void sqlite3_mutex_leave(sqlite3_mutex*); /* ** CAPI3REF: Mutex Methods Object {F17120} ** ** An instance of this structure defines the low-level routines ** used to allocate and use mutexes. ** ** Usually, the default mutex implementations provided by SQLite are ** sufficient, however the user has the option of substituting a custom ** implementation for specialized deployments or systems for which SQLite ................................................................................ ** to sqlite3_config() along with the [SQLITE_CONFIG_MUTEX] option. ** Additionally, an instance of this structure can be used as an ** output variable when querying the system for the current mutex ** implementation, using the [SQLITE_CONFIG_GETMUTEX] option. ** ** The xMutexInit method defined by this structure is invoked as ** part of system initialization by the sqlite3_initialize() function. ** {F17001} The xMutexInit routine shall be called by SQLite once for each ** effective call to [sqlite3_initialize()]. ** ** The xMutexEnd method defined by this structure is invoked as ** part of system shutdown by the sqlite3_shutdown() function. The ** implementation of this method is expected to release all outstanding ** resources obtained by the mutex methods implementation, especially ** those obtained by the xMutexInit method. {F17003} The xMutexEnd() ** interface shall be invoked once for each call to [sqlite3_shutdown()]. ** ** The remaining seven methods defined by this structure (xMutexAlloc, ** xMutexFree, xMutexEnter, xMutexTry, xMutexLeave, xMutexHeld and ** xMutexNotheld) implement the following interfaces (respectively): ** ** <ul> ................................................................................ int (*xMutexTry)(sqlite3_mutex *); void (*xMutexLeave)(sqlite3_mutex *); int (*xMutexHeld)(sqlite3_mutex *); int (*xMutexNotheld)(sqlite3_mutex *); }; /* ** CAPI3REF: Mutex Verification Routines {F17080} ** ** The sqlite3_mutex_held() and sqlite3_mutex_notheld() routines ** are intended for use inside assert() statements. {F17081} The SQLite core ** never uses these routines except inside an assert() and applications ** are advised to follow the lead of the core. {F17082} The core only ** provides implementations for these routines when it is compiled ** with the SQLITE_DEBUG flag. {A17087} External mutex implementations ** are only required to provide these routines if SQLITE_DEBUG is ** defined and if NDEBUG is not defined. ** ** {F17083} These routines should return true if the mutex in their argument ** is held or not held, respectively, by the calling thread. ** ** {X17084} The implementation is not required to provided versions of these ** routines that actually work. If the implementation does not provide working ** versions of these routines, it should at least provide stubs that always ** return true so that one does not get spurious assertion failures. ** ** {F17085} If the argument to sqlite3_mutex_held() is a NULL pointer then ** the routine should return 1. {END} This seems counter-intuitive since ** clearly the mutex cannot be held if it does not exist. But the ** the reason the mutex does not exist is because the build is not ** using mutexes. And we do not want the assert() containing the ** call to sqlite3_mutex_held() to fail, so a non-zero return is ** the appropriate thing to do. {F17086} The sqlite3_mutex_notheld() ** interface should also return 1 when given a NULL pointer. */ SQLITE_API int sqlite3_mutex_held(sqlite3_mutex*); SQLITE_API int sqlite3_mutex_notheld(sqlite3_mutex*); /* ** CAPI3REF: Mutex Types {F17001} ** ** {F17002} The [sqlite3_mutex_alloc()] interface takes a single argument ** which is one of these integer constants. */ #define SQLITE_MUTEX_FAST 0 #define SQLITE_MUTEX_RECURSIVE 1 #define SQLITE_MUTEX_STATIC_MASTER 2 #define SQLITE_MUTEX_STATIC_MEM 3 /* sqlite3_malloc() */ #define SQLITE_MUTEX_STATIC_MEM2 4 /* sqlite3_release_memory() */ #define SQLITE_MUTEX_STATIC_PRNG 5 /* sqlite3_random() */ #define SQLITE_MUTEX_STATIC_LRU 6 /* lru page list */ #define SQLITE_MUTEX_STATIC_LRU2 7 /* lru page list */ /* ** CAPI3REF: Low-Level Control Of Database Files {F11300} ** ** {F11301} The [sqlite3_file_control()] interface makes a direct call to the ** xFileControl method for the [sqlite3_io_methods] object associated ** with a particular database identified by the second argument. {F11302} The ** name of the database is the name assigned to the database by the ** <a href="lang_attach.html">ATTACH</a> SQL command that opened the ** database. {F11303} To control the main database file, use the name "main" ** or a NULL pointer. {F11304} The third and fourth parameters to this routine ** are passed directly through to the second and third parameters of ** the xFileControl method. {F11305} The return value of the xFileControl ** method becomes the return value of this routine. ** ** {F11306} If the second parameter (zDbName) does not match the name of any ** open database file, then SQLITE_ERROR is returned. {F11307} This error ** code is not remembered and will not be recalled by [sqlite3_errcode()] ** or [sqlite3_errmsg()]. {A11308} The underlying xFileControl method might ** also return SQLITE_ERROR. {A11309} There is no way to distinguish between ** an incorrect zDbName and an SQLITE_ERROR return from the underlying ** xFileControl method. {END} ** ** See also: [SQLITE_FCNTL_LOCKSTATE] */ SQLITE_API int sqlite3_file_control(sqlite3*, const char *zDbName, int op, void*); /* ** CAPI3REF: Testing Interface {F11400} ** ** The sqlite3_test_control() interface is used to read out internal ** state of SQLite and to inject faults into SQLite for testing ** purposes. The first parameter is an operation code that determines ** the number, meaning, and operation of all subsequent parameters. ** ** This interface is not for use by applications. It exists solely ................................................................................ ** they take, and what they do are all subject to change without notice. ** Unlike most of the SQLite API, this function is not guaranteed to ** operate consistently from one release to the next. */ SQLITE_API int sqlite3_test_control(int op, ...); /* ** CAPI3REF: Testing Interface Operation Codes {F11410} ** ** These constants are the valid operation code parameters used ** as the first argument to [sqlite3_test_control()]. ** ** These parameters and their meanings are subject to change ** without notice. These values are for testing purposes only. ** Applications should not use any of these parameters or the ................................................................................ #define SQLITE_TESTCTRL_PRNG_RESTORE 6 #define SQLITE_TESTCTRL_PRNG_RESET 7 #define SQLITE_TESTCTRL_BITVEC_TEST 8 #define SQLITE_TESTCTRL_FAULT_INSTALL 9 #define SQLITE_TESTCTRL_BENIGN_MALLOC_HOOKS 10 /* ** CAPI3REF: SQLite Runtime Status {F17200} ** ** This interface is used to retrieve runtime status information ** about the preformance of SQLite, and optionally to reset various ** highwater marks. The first argument is an integer code for ** the specific parameter to measure. Recognized integer codes ** are of the form [SQLITE_STATUS_MEMORY_USED | SQLITE_STATUS_...]. ** The current value of the parameter is returned into *pCurrent. ................................................................................ ** This routine is threadsafe but is not atomic. This routine can ** called while other threads are running the same or different SQLite ** interfaces. However the values returned in *pCurrent and ** *pHighwater reflect the status of SQLite at different points in time ** and it is possible that another thread might change the parameter ** in between the times when *pCurrent and *pHighwater are written. ** ** This interface is experimental and is subject to change or ** removal in future releases of SQLite. */ SQLITE_API int sqlite3_status(int op, int *pCurrent, int *pHighwater, int resetFlag); /* ** CAPI3REF: Status Parameters {F17250} ** ** These integer constants designate various run-time status parameters ** that can be returned by [sqlite3_status()]. ** ** <dl> ** <dt>SQLITE_STATUS_MEMORY_USED</dt> ** <dd>This parameter is the current amount of memory checked out ................................................................................ ** figure includes calls made to [sqlite3_malloc()] by the application ** and internal memory usage by the SQLite library. Scratch memory ** controlled by [SQLITE_CONFIG_SCRATCH] and auxiliary page-cache ** memory controlled by [SQLITE_CONFIG_PAGECACHE] is not included in ** this parameter. The amount returned is the sum of the allocation ** sizes as reported by the xSize method in [sqlite3_mem_methods].</dd> ** ** <dt>SQLITE_STATUS_PAGECACHE_USED</dt> ** <dd>This parameter returns the number of pages used out of the ** page cache buffer configured using [SQLITE_CONFIG_PAGECACHE]. The ** value returned is in pages, not in bytes.</dd> ** ** <dt>SQLITE_STATUS_PAGECACHE_OVERFLOW</dt> ** <dd>This parameter returns the number of bytes of page cache ** allocation which could not be statisfied by the [SQLITE_CONFIG_PAGECACHE] ** buffer and where forced to overflow to [sqlite3_malloc()].</dd> ** ** <dt>SQLITE_STATUS_SCRATCH_USED</dt> ** <dd>This parameter returns the number of allocations used out of the ** scratch allocation lookaside buffer configured using ** [SQLITE_CONFIG_SCRATCH]. The value returned is in allocations, not ** in bytes. Since a single thread may only have one allocation ** outstanding at time, this parameter also reports the number of threads ** using scratch memory at the same time.</dd> ** ** <dt>SQLITE_STATUS_SCRATCH_OVERFLOW</dt> ** <dd>This parameter returns the number of bytes of scratch memory ** allocation which could not be statisfied by the [SQLITE_CONFIG_SCRATCH] ** buffer and where forced to overflow to [sqlite3_malloc()].</dd> ** ** <dt>SQLITE_STATUS_MALLOC_SIZE</dt> ** <dd>This parameter records the largest memory allocation request ** handed to [sqlite3_malloc()] or [sqlite3_realloc()] (or their ** internal equivalents). The value of interest is return in the ** *pHighwater parameter to [sqlite3_status()]. The value written ** into the *pCurrent parameter is undefined.</dd> ** </dl> ** ** New status parameters may be added from time to time. */ #define SQLITE_STATUS_MEMORY_USED 0 #define SQLITE_STATUS_PAGECACHE_USED 1 #define SQLITE_STATUS_PAGECACHE_OVERFLOW 2 #define SQLITE_STATUS_SCRATCH_USED 3 #define SQLITE_STATUS_SCRATCH_OVERFLOW 4 #define SQLITE_STATUS_MALLOC_SIZE 5 /* ** Undo the hack that converts floating point types to integer for ** builds on processors without floating point support. */ #ifdef SQLITE_OMIT_FLOATING_POINT # undef double ................................................................................ ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This is the header file for the generic hash-table implemenation ** used in SQLite. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef _SQLITE_HASH_H_ #define _SQLITE_HASH_H_ /* Forward declarations of structures. */ typedef struct Hash Hash; typedef struct HashElem HashElem; ................................................................................ /* ** A convenience macro that returns the number of elements in ** an array. */ #define ArraySize(X) (sizeof(X)/sizeof(X[0])) /* ** Forward references to structures */ typedef struct AggInfo AggInfo; typedef struct AuthContext AuthContext; typedef struct Bitvec Bitvec; typedef struct CollSeq CollSeq; ................................................................................ typedef struct ExprList ExprList; typedef struct FKey FKey; typedef struct FuncDef FuncDef; typedef struct IdList IdList; typedef struct Index Index; typedef struct KeyClass KeyClass; typedef struct KeyInfo KeyInfo; typedef struct Module Module; typedef struct NameContext NameContext; typedef struct Parse Parse; typedef struct Select Select; typedef struct SrcList SrcList; typedef struct StrAccum StrAccum; typedef struct Table Table; ................................................................................ ** May you share freely, never taking more than you give. ** ************************************************************************* ** This header file defines the interface that the sqlite B-Tree file ** subsystem. See comments in the source code for a detailed description ** of what each interface routine does. ** ** @(#) $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef _BTREE_H_ #define _BTREE_H_ /* TODO: This definition is just included so other modules compile. It ** needs to be revisited. */ ................................................................................ ************************************************************************* ** Header file for the Virtual DataBase Engine (VDBE) ** ** This header defines the interface to the virtual database engine ** or VDBE. The VDBE implements an abstract machine that runs a ** simple program to access and modify the underlying database. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef _SQLITE_VDBE_H_ #define _SQLITE_VDBE_H_ /* ** A single VDBE is an opaque structure named "Vdbe". Only routines ** in the source file sqliteVdbe.c are allowed to see the insides ................................................................................ SQLITE_PRIVATE int sqlite3VdbeFinalize(Vdbe*); SQLITE_PRIVATE void sqlite3VdbeResolveLabel(Vdbe*, int); SQLITE_PRIVATE int sqlite3VdbeCurrentAddr(Vdbe*); #ifdef SQLITE_DEBUG SQLITE_PRIVATE void sqlite3VdbeTrace(Vdbe*,FILE*); #endif SQLITE_PRIVATE void sqlite3VdbeResetStepResult(Vdbe*); SQLITE_PRIVATE int sqlite3VdbeReset(Vdbe*, int); SQLITE_PRIVATE void sqlite3VdbeSetNumCols(Vdbe*,int); SQLITE_PRIVATE int sqlite3VdbeSetColName(Vdbe*, int, int, const char *, int); SQLITE_PRIVATE void sqlite3VdbeCountChanges(Vdbe*); SQLITE_PRIVATE sqlite3 *sqlite3VdbeDb(Vdbe*); SQLITE_PRIVATE void sqlite3VdbeSetSql(Vdbe*, const char *z, int n); SQLITE_PRIVATE void sqlite3VdbeSwap(Vdbe*,Vdbe*); ................................................................................ ** May you share freely, never taking more than you give. ** ************************************************************************* ** This header file defines the interface that the sqlite page cache ** subsystem. The page cache subsystem reads and writes a file a page ** at a time and provides a journal for rollback. ** ** @(#) $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef _PAGER_H_ #define _PAGER_H_ /* ** If defined as non-zero, auto-vacuum is enabled by default. Otherwise ................................................................................ SQLITE_PRIVATE void sqlite3PagerSetSafetyLevel(Pager*,int,int); SQLITE_PRIVATE const char *sqlite3PagerFilename(Pager*); SQLITE_PRIVATE const sqlite3_vfs *sqlite3PagerVfs(Pager*); SQLITE_PRIVATE sqlite3_file *sqlite3PagerFile(Pager*); SQLITE_PRIVATE const char *sqlite3PagerDirname(Pager*); SQLITE_PRIVATE const char *sqlite3PagerJournalname(Pager*); SQLITE_PRIVATE int sqlite3PagerNosync(Pager*); SQLITE_PRIVATE int sqlite3PagerMovepage(Pager*,DbPage*,Pgno); SQLITE_PRIVATE void *sqlite3PagerGetData(DbPage *); SQLITE_PRIVATE void *sqlite3PagerGetExtra(DbPage *); SQLITE_PRIVATE int sqlite3PagerLockingMode(Pager *, int); SQLITE_PRIVATE int sqlite3PagerJournalMode(Pager *, int); SQLITE_PRIVATE i64 sqlite3PagerJournalSizeLimit(Pager *, i64); SQLITE_PRIVATE void *sqlite3PagerTempSpace(Pager*); SQLITE_PRIVATE int sqlite3PagerSync(Pager *pPager); ................................................................................ ** This header file (together with is companion C source-code file ** "os.c") attempt to abstract the underlying operating system so that ** the SQLite library will work on both POSIX and windows systems. ** ** This header file is #include-ed by sqliteInt.h and thus ends up ** being included by every source file. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef _SQLITE_OS_H_ #define _SQLITE_OS_H_ /* ** Figure out if we are dealing with Unix, Windows, or some other ** operating system. After the following block of preprocess macros, ................................................................................ ** to all source files. We break it out in an effort to keep the code ** better organized. ** ** NOTE: source files should *not* #include this header file directly. ** Source files should #include the sqliteInt.h file and let that file ** include this one indirectly. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifdef SQLITE_MUTEX_APPDEF /* ** If SQLITE_MUTEX_APPDEF is defined, then this whole module is ** omitted and equivalent functionality must be provided by the ................................................................................ /* ** The number of different kinds of things that can be limited ** using the sqlite3_limit() interface. */ #define SQLITE_N_LIMIT (SQLITE_LIMIT_VARIABLE_NUMBER+1) /* ** Each database is an instance of the following structure. ** ** The sqlite.lastRowid records the last insert rowid generated by an ** insert statement. Inserts on views do not affect its value. Each ** trigger has its own context, so that lastRowid can be updated inside ** triggers as usual. The previous value will be restored once the trigger ................................................................................ sqlite3_value *pErr; /* Most recent error message */ char *zErrMsg; /* Most recent error message (UTF-8 encoded) */ char *zErrMsg16; /* Most recent error message (UTF-16 encoded) */ union { int isInterrupted; /* True if sqlite3_interrupt has been called */ double notUsed1; /* Spacer */ } u1; #ifndef SQLITE_OMIT_AUTHORIZATION int (*xAuth)(void*,int,const char*,const char*,const char*,const char*); /* Access authorization function */ void *pAuthArg; /* 1st argument to the access auth function */ #endif #ifndef SQLITE_OMIT_PROGRESS_CALLBACK int (*xProgress)(void *); /* The progress callback */ ................................................................................ ** when the VDBE cursor to the table is closed. In this case Table.tnum ** refers VDBE cursor number that holds the table open, not to the root ** page number. Transient tables are used to hold the results of a ** sub-query that appears instead of a real table name in the FROM clause ** of a SELECT statement. */ struct Table { char *zName; /* Name of the table */ int nCol; /* Number of columns in this table */ Column *aCol; /* Information about each column */ int iPKey; /* If not less then 0, use aCol[iPKey] as the primary key */ Index *pIndex; /* List of SQL indexes on this table. */ int tnum; /* Root BTree node for this table (see note above) */ Select *pSelect; /* NULL for tables. Points to definition if a view. */ ................................................................................ }; /* ** An objected used to accumulate the text of a string where we ** do not necessarily know how big the string will be in the end. */ struct StrAccum { char *zBase; /* A base allocation. Not from malloc. */ char *zText; /* The string collected so far */ int nChar; /* Length of the string so far */ int nAlloc; /* Amount of space allocated in zText */ int mxAlloc; /* Maximum allowed string length */ u8 mallocFailed; /* Becomes true if any memory allocation fails */ u8 useMalloc; /* True if zText is enlargable using realloc */ u8 tooBig; /* Becomes true if string size exceeds limits */ }; /* ................................................................................ ** This structure also contains some state information. */ struct Sqlite3Config { int bMemstat; /* True to enable memory status */ int bCoreMutex; /* True to enable core mutexing */ int bFullMutex; /* True to enable full mutexing */ int mxStrlen; /* Maximum string length */ sqlite3_mem_methods m; /* Low-level memory allocation interface */ sqlite3_mutex_methods mutex; /* Low-level mutex interface */ void *pHeap; /* Heap storage space */ int nHeap; /* Size of pHeap[] */ int mnReq, mxReq; /* Min and max heap requests sizes */ void *pScratch; /* Scratch memory */ int szScratch; /* Size of each scratch buffer */ ................................................................................ int nScratch; /* Number of scratch buffers */ void *pPage; /* Page cache memory */ int szPage; /* Size of each page in pPage[] */ int nPage; /* Number of pages in pPage[] */ int isInit; /* True after initialization has finished */ int isMallocInit; /* True after malloc is initialized */ sqlite3_mutex *pInitMutex; /* Mutex used by sqlite3_initialize() */ }; /* ** Assuming zIn points to the first byte of a UTF-8 character, ** advance zIn to point to the first byte of the next UTF-8 character. */ #define SQLITE_SKIP_UTF8(zIn) { \ ................................................................................ SQLITE_PRIVATE int sqlite3MallocInit(void); SQLITE_PRIVATE void sqlite3MallocEnd(void); SQLITE_PRIVATE void *sqlite3Malloc(int); SQLITE_PRIVATE void *sqlite3MallocZero(int); SQLITE_PRIVATE void *sqlite3DbMallocZero(sqlite3*, int); SQLITE_PRIVATE void *sqlite3DbMallocRaw(sqlite3*, int); SQLITE_PRIVATE char *sqlite3StrDup(const char*); SQLITE_PRIVATE char *sqlite3StrNDup(const char*, int); SQLITE_PRIVATE char *sqlite3DbStrDup(sqlite3*,const char*); SQLITE_PRIVATE char *sqlite3DbStrNDup(sqlite3*,const char*, int); SQLITE_PRIVATE void *sqlite3Realloc(void*, int); SQLITE_PRIVATE void *sqlite3DbReallocOrFree(sqlite3 *, void *, int); SQLITE_PRIVATE void *sqlite3DbRealloc(sqlite3 *, void *, int); SQLITE_PRIVATE int sqlite3MallocSize(void *); SQLITE_PRIVATE void *sqlite3ScratchMalloc(int); SQLITE_PRIVATE void sqlite3ScratchFree(void*); SQLITE_PRIVATE void *sqlite3PageMalloc(int); SQLITE_PRIVATE void sqlite3PageFree(void*); SQLITE_PRIVATE void sqlite3MemSetDefault(void); SQLITE_PRIVATE const sqlite3_mem_methods *sqlite3MemGetMemsys5(void); SQLITE_PRIVATE const sqlite3_mem_methods *sqlite3MemGetMemsys3(void); SQLITE_PRIVATE void sqlite3BenignMallocHooks(void (*)(void), void (*)(void)); #ifndef SQLITE_MUTEX_NOOP SQLITE_PRIVATE sqlite3_mutex_methods *sqlite3DefaultMutex(void); SQLITE_PRIVATE sqlite3_mutex *sqlite3MutexAlloc(int); SQLITE_PRIVATE int sqlite3MutexInit(void); SQLITE_PRIVATE int sqlite3MutexEnd(void); ................................................................................ SQLITE_PRIVATE void sqlite3StatusSet(int, int); SQLITE_PRIVATE int sqlite3IsNaN(double); SQLITE_PRIVATE void sqlite3VXPrintf(StrAccum*, int, const char*, va_list); SQLITE_PRIVATE char *sqlite3MPrintf(sqlite3*,const char*, ...); SQLITE_PRIVATE char *sqlite3VMPrintf(sqlite3*,const char*, va_list); #if defined(SQLITE_TEST) || defined(SQLITE_DEBUG) SQLITE_PRIVATE void sqlite3DebugPrintf(const char*, ...); #endif #if defined(SQLITE_TEST) SQLITE_PRIVATE void *sqlite3TestTextToPtr(const char*); #endif SQLITE_PRIVATE void sqlite3SetString(char **, sqlite3*, const char*, ...); ................................................................................ SQLITE_PRIVATE Expr *sqlite3Expr(sqlite3*, int, Expr*, Expr*, const Token*); SQLITE_PRIVATE Expr *sqlite3PExpr(Parse*, int, Expr*, Expr*, const Token*); SQLITE_PRIVATE Expr *sqlite3RegisterExpr(Parse*,Token*); SQLITE_PRIVATE Expr *sqlite3ExprAnd(sqlite3*,Expr*, Expr*); SQLITE_PRIVATE void sqlite3ExprSpan(Expr*,Token*,Token*); SQLITE_PRIVATE Expr *sqlite3ExprFunction(Parse*,ExprList*, Token*); SQLITE_PRIVATE void sqlite3ExprAssignVarNumber(Parse*, Expr*); SQLITE_PRIVATE void sqlite3ExprDelete(Expr*); SQLITE_PRIVATE ExprList *sqlite3ExprListAppend(Parse*,ExprList*,Expr*,Token*); SQLITE_PRIVATE void sqlite3ExprListDelete(ExprList*); SQLITE_PRIVATE int sqlite3Init(sqlite3*, char**); SQLITE_PRIVATE int sqlite3InitCallback(void*, int, char**, char**); SQLITE_PRIVATE void sqlite3Pragma(Parse*,Token*,Token*,Token*,int); SQLITE_PRIVATE void sqlite3ResetInternalSchema(sqlite3*, int); SQLITE_PRIVATE void sqlite3BeginParse(Parse*,int); SQLITE_PRIVATE void sqlite3CommitInternalChanges(sqlite3*); SQLITE_PRIVATE Table *sqlite3ResultSetOfSelect(Parse*,char*,Select*); ................................................................................ SQLITE_PRIVATE IdList *sqlite3IdListAppend(sqlite3*, IdList*, Token*); SQLITE_PRIVATE int sqlite3IdListIndex(IdList*,const char*); SQLITE_PRIVATE SrcList *sqlite3SrcListAppend(sqlite3*, SrcList*, Token*, Token*); SQLITE_PRIVATE SrcList *sqlite3SrcListAppendFromTerm(Parse*, SrcList*, Token*, Token*, Token*, Select*, Expr*, IdList*); SQLITE_PRIVATE void sqlite3SrcListShiftJoinType(SrcList*); SQLITE_PRIVATE void sqlite3SrcListAssignCursors(Parse*, SrcList*); SQLITE_PRIVATE void sqlite3IdListDelete(IdList*); SQLITE_PRIVATE void sqlite3SrcListDelete(SrcList*); SQLITE_PRIVATE void sqlite3CreateIndex(Parse*,Token*,Token*,SrcList*,ExprList*,int,Token*, Token*, int, int); SQLITE_PRIVATE void sqlite3DropIndex(Parse*, SrcList*, int); SQLITE_PRIVATE int sqlite3Select(Parse*, Select*, SelectDest*, Select*, int, int*); SQLITE_PRIVATE Select *sqlite3SelectNew(Parse*,ExprList*,SrcList*,Expr*,ExprList*, Expr*,ExprList*,int,Expr*,Expr*); SQLITE_PRIVATE void sqlite3SelectDelete(Select*); SQLITE_PRIVATE Table *sqlite3SrcListLookup(Parse*, SrcList*); SQLITE_PRIVATE int sqlite3IsReadOnly(Parse*, Table*, int); SQLITE_PRIVATE void sqlite3OpenTable(Parse*, int iCur, int iDb, Table*, int); SQLITE_PRIVATE void sqlite3DeleteFrom(Parse*, SrcList*, Expr*); SQLITE_PRIVATE void sqlite3Update(Parse*, SrcList*, ExprList*, Expr*, int); SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin(Parse*, SrcList*, Expr*, ExprList**, u8); SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo*); ................................................................................ SQLITE_PRIVATE void sqlite3FinishTrigger(Parse*, TriggerStep*, Token*); SQLITE_PRIVATE void sqlite3DropTrigger(Parse*, SrcList*, int); SQLITE_PRIVATE void sqlite3DropTriggerPtr(Parse*, Trigger*); SQLITE_PRIVATE int sqlite3TriggersExist(Parse*, Table*, int, ExprList*); SQLITE_PRIVATE int sqlite3CodeRowTrigger(Parse*, int, ExprList*, int, Table *, int, int, int, int, u32*, u32*); void sqliteViewTriggers(Parse*, Table*, Expr*, int, ExprList*); SQLITE_PRIVATE void sqlite3DeleteTriggerStep(TriggerStep*); SQLITE_PRIVATE TriggerStep *sqlite3TriggerSelectStep(sqlite3*,Select*); SQLITE_PRIVATE TriggerStep *sqlite3TriggerInsertStep(sqlite3*,Token*, IdList*, ExprList*,Select*,int); SQLITE_PRIVATE TriggerStep *sqlite3TriggerUpdateStep(sqlite3*,Token*,ExprList*, Expr*, int); SQLITE_PRIVATE TriggerStep *sqlite3TriggerDeleteStep(sqlite3*,Token*, Expr*); SQLITE_PRIVATE void sqlite3DeleteTrigger(Trigger*); SQLITE_PRIVATE void sqlite3UnlinkAndDeleteTrigger(sqlite3*,int,const char*); #else # define sqlite3TriggersExist(A,B,C,D,E,F) 0 # define sqlite3DeleteTrigger(A) # define sqlite3DropTriggerPtr(A,B) # define sqlite3UnlinkAndDeleteTrigger(A,B,C) # define sqlite3CodeRowTrigger(A,B,C,D,E,F,G,H,I,J,K) 0 #endif SQLITE_PRIVATE int sqlite3JoinType(Parse*, Token*, Token*, Token*); SQLITE_PRIVATE void sqlite3CreateForeignKey(Parse*, ExprList*, Token*, ExprList*, int); ................................................................................ /* ** The interface to the LEMON-generated parser */ SQLITE_PRIVATE void *sqlite3ParserAlloc(void*(*)(size_t)); SQLITE_PRIVATE void sqlite3ParserFree(void*, void(*)(void*)); SQLITE_PRIVATE void sqlite3Parser(void*, int, Token, Parse*); SQLITE_PRIVATE int sqlite3AutoLoadExtensions(sqlite3*); #ifndef SQLITE_OMIT_LOAD_EXTENSION SQLITE_PRIVATE void sqlite3CloseExtensions(sqlite3*); #else # define sqlite3CloseExtensions(X) #endif ................................................................................ #ifdef SQLITE_TEST SQLITE_PRIVATE int sqlite3Utf8To8(unsigned char*); #endif #ifdef SQLITE_OMIT_VIRTUALTABLE # define sqlite3VtabClear(X) # define sqlite3VtabSync(X,Y) (Y) # define sqlite3VtabRollback(X) # define sqlite3VtabCommit(X) #else SQLITE_PRIVATE void sqlite3VtabClear(Table*); SQLITE_PRIVATE int sqlite3VtabSync(sqlite3 *db, int rc); SQLITE_PRIVATE int sqlite3VtabRollback(sqlite3 *db); SQLITE_PRIVATE int sqlite3VtabCommit(sqlite3 *db); #endif SQLITE_PRIVATE void sqlite3VtabMakeWritable(Parse*,Table*); SQLITE_PRIVATE void sqlite3VtabLock(sqlite3_vtab*); SQLITE_PRIVATE void sqlite3VtabUnlock(sqlite3*, sqlite3_vtab*); SQLITE_PRIVATE void sqlite3VtabBeginParse(Parse*, Token*, Token*, Token*); ................................................................................ ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** ** This file contains definitions of global variables and contants. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* An array to map all upper-case characters into their corresponding ** lower-case character. ** ** SQLite only considers US-ASCII (or EBCDIC) characters. We do not ................................................................................ #endif }; /* ** The following singleton contains the global configuration for ** the SQLite library. */ SQLITE_PRIVATE struct Sqlite3Config sqlite3Config = { 1, 1, 1, 0x7ffffffe }; /************** End of global.c **********************************************/ /************** Begin file status.c ******************************************/ /* ** 2008 June 18 ** ** The author disclaims copyright to this source code. In place of ................................................................................ ** May you share freely, never taking more than you give. ** ************************************************************************* ** ** This module implements the sqlite3_status() interface and related ** functionality. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** Variables in which to record status information. */ static struct { int nowValue[6]; /* Current value */ int mxValue[6]; /* Maximum value */ } sqlite3Stat; /* ** Reset the status records. This routine is called by ** sqlite3_initialize(). */ ................................................................................ *pCurrent = sqlite3Stat.nowValue[op]; *pHighwater = sqlite3Stat.mxValue[op]; if( resetFlag ){ sqlite3Stat.mxValue[op] = sqlite3Stat.nowValue[op]; } return SQLITE_OK; } /************** End of status.c **********************************************/ /************** Begin file date.c ********************************************/ /* ** 2003 October 31 ** ** The author disclaims copyright to this source code. In place of ................................................................................ ** This file contains the C functions that implement date and time ** functions for SQLite. ** ** There is only one exported symbol in this file - the function ** sqlite3RegisterDateTimeFunctions() found at the bottom of the file. ** All other code has file scope. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ ** ** SQLite processes all times and dates as Julian Day numbers. The ** dates and times are stored as the number of days since noon ** in Greenwich on November 24, 4714 B.C. according to the Gregorian ** calendar system. ** ** 1970-01-01 00:00:00 is JD 2440587.5 ................................................................................ ** Treat the current value of p->iJD as the number of ** seconds since 1970. Convert to a real julian day number. */ if( strcmp(z, "unixepoch")==0 && p->validJD ){ p->iJD = p->iJD/86400.0 + 2440587.5*86400000.0; clearYMD_HMS_TZ(p); rc = 0; }else if( strcmp(z, "utc")==0 ){ double c1; computeJD(p); c1 = localtimeOffset(p); p->iJD -= c1; clearYMD_HMS_TZ(p); p->iJD += c1 - localtimeOffset(p); rc = 0; } break; } case 'w': { /* ** weekday N ** ** Move the date to the same time on the next occurrence of ................................................................................ int argc, sqlite3_value **argv ){ DateTime x; u64 n; int i, j; char *z; const char *zFmt = (const char*)sqlite3_value_text(argv[0]); char zBuf[100]; if( zFmt==0 || isDate(context, argc-1, argv+1, &x) ) return; for(i=0, n=1; zFmt[i]; i++, n++){ if( zFmt[i]=='%' ){ switch( zFmt[i+1] ){ case 'd': case 'H': case 'm': case 'M': ................................................................................ return; /* ERROR. return a NULL */ } i++; } } if( n<sizeof(zBuf) ){ z = zBuf; }else if( n>sqlite3_context_db_handle(context)->aLimit[SQLITE_LIMIT_LENGTH] ){ sqlite3_result_error_toobig(context); return; }else{ z = sqlite3Malloc( n ); if( z==0 ){ sqlite3_result_error_nomem(context); return; } } computeJD(&x); computeYMD_HMS(&x); ................................................................................ case 'Y': sqlite3_snprintf(5,&z[j],"%04d",x.Y); j+=strlen(&z[j]);break; default: z[j++] = '%'; break; } } } z[j] = 0; sqlite3_result_text(context, z, -1, z==zBuf ? SQLITE_TRANSIENT : sqlite3_free); } /* ** current_time() ** ** This function returns the same value as time('now'). */ ................................................................................ ** May you share freely, never taking more than you give. ** ****************************************************************************** ** ** This file contains OS interface code that is common to all ** architectures. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #define _SQLITE_OS_C_ 1 #undef _SQLITE_OS_C_ /* ** The default SQLite sqlite3_vfs implementations do not allocate ** memory (actually, os_unix.c allocates a small amount of memory ................................................................................ ** sqlite3OsOpen() ** sqlite3OsRead() ** sqlite3OsWrite() ** sqlite3OsSync() ** sqlite3OsLock() ** */ #if defined(SQLITE_TEST) && (SQLITE_OS_WIN==0) #define DO_OS_MALLOC_TEST if (1) { \ void *pTstAlloc = sqlite3Malloc(10); \ if (!pTstAlloc) return SQLITE_IOERR_NOMEM; \ sqlite3_free(pTstAlloc); \ } #else #define DO_OS_MALLOC_TEST ................................................................................ ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** This file contains code to support the concept of "benign" ** malloc failures (when the xMalloc() or xRealloc() method of the ** sqlite3_mem_methods structure fails to allocate a block of memory ** and returns 0). ................................................................................ ** This file contains low-level memory allocation drivers for when ** SQLite will use the standard C-library malloc/realloc/free interface ** to obtain the memory it needs. ** ** This file contains implementations of the low-level memory allocation ** routines specified in the sqlite3_mem_methods object. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** This version of the memory allocator is the default. It is ** used when no other memory allocator is specified using compile-time ** macros. */ ................................................................................ /* ** Deinitialize this module. */ static void sqlite3MemShutdown(void *NotUsed){ return; } /* ** This routine is the only routine in this file with external linkage. ** ** Populate the low-level memory allocation function pointers in ** sqlite3Config.m with pointers to the routines in this file. */ SQLITE_PRIVATE void sqlite3MemSetDefault(void){ static const sqlite3_mem_methods defaultMethods = { sqlite3MemMalloc, sqlite3MemFree, sqlite3MemRealloc, sqlite3MemSize, sqlite3MemRoundup, sqlite3MemInit, sqlite3MemShutdown, 0 }; sqlite3_config(SQLITE_CONFIG_MALLOC, &defaultMethods); } #endif /* SQLITE_SYSTEM_MALLOC */ /************** End of mem1.c ************************************************/ /************** Begin file mem2.c ********************************************/ /* ................................................................................ ** to obtain the memory it needs while adding lots of additional debugging ** information to each allocation in order to help detect and fix memory ** leaks and memory usage errors. ** ** This file contains implementations of the low-level memory allocation ** routines specified in the sqlite3_mem_methods object. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** This version of the memory allocator is used only if the ** SQLITE_MEMDEBUG macro is defined */ #ifdef SQLITE_MEMDEBUG ................................................................................ ** sqlite3MallocDisallow() increments the following counter. ** sqlite3MallocAllow() decrements it. */ int disallow; /* Do not allow memory allocation */ /* ** Gather statistics on the sizes of memory allocations. ** sizeCnt[i] is the number of allocation attempts of i*8 ** bytes. i==NCSIZE is the number of allocation attempts for ** sizes more than NCSIZE*8 bytes. */ int sizeCnt[NCSIZE]; } mem; /* ** Given an allocation, find the MemBlockHdr for that allocation. ** ** This routine checks the guards at either end of the allocation and ** if they are incorrect it asserts. */ static struct MemBlockHdr *sqlite3MemsysGetHeader(void *pAllocation){ ................................................................................ int *pInt; void *p = 0; int totalSize; int nReserve; sqlite3_mutex_enter(mem.mutex); assert( mem.disallow==0 ); nReserve = (nByte+7)&~7; if( nReserve/8>NCSIZE-1 ){ mem.sizeCnt[NCSIZE-1]++; }else{ mem.sizeCnt[nReserve/8]++; } totalSize = nReserve + sizeof(*pHdr) + sizeof(int) + mem.nBacktrace*sizeof(void*) + mem.nTitle; p = malloc(totalSize); if( p ){ z = p; pBt = (void**)&z[mem.nTitle]; pHdr = (struct MemBlockHdr*)&pBt[mem.nBacktrace]; ................................................................................ }else{ pHdr->nBacktrace = 0; } if( mem.nTitle ){ memcpy(z, mem.zTitle, mem.nTitle); } pHdr->iSize = nByte; pInt = (int*)&pHdr[1]; pInt[nReserve/sizeof(int)] = REARGUARD; memset(pInt, 0x65, nReserve); p = (void*)pInt; } sqlite3_mutex_leave(mem.mutex); return p; ................................................................................ pHdr->pNext->pPrev = pHdr->pPrev; }else{ assert( mem.pLast==pHdr ); mem.pLast = pHdr->pPrev; } z = (char*)pBt; z -= pHdr->nTitle; memset(z, 0x2b, sizeof(void*)*pHdr->nBacktraceSlots + sizeof(*pHdr) + pHdr->iSize + sizeof(int) + pHdr->nTitle); free(z); sqlite3_mutex_leave(mem.mutex); } /* ................................................................................ } sqlite3MemFree(pPrior); } return pNew; } /* ** Populate the low-level memory allocation function pointers in ** sqlite3Config.m with pointers to the routines in this file. */ SQLITE_PRIVATE void sqlite3MemSetDefault(void){ static const sqlite3_mem_methods defaultMethods = { sqlite3MemMalloc, sqlite3MemFree, sqlite3MemRealloc, sqlite3MemSize, sqlite3MemRoundup, sqlite3MemInit, sqlite3MemShutdown, 0 }; sqlite3_config(SQLITE_CONFIG_MALLOC, &defaultMethods); } /* ** Set the number of backtrace levels kept for each allocation. ** A value of zero turns off backtracing. The number is always rounded ** up to a multiple of 2. */ ................................................................................ pBt -= pHdr->nBacktraceSlots; backtrace_symbols_fd(pBt, pHdr->nBacktrace, fileno(out)); fprintf(out, "\n"); } } fprintf(out, "COUNTS:\n"); for(i=0; i<NCSIZE-1; i++){ if( mem.sizeCnt[i] ){ fprintf(out, " %3d: %d\n", i*8+8, mem.sizeCnt[i]); } } if( mem.sizeCnt[NCSIZE-1] ){ fprintf(out, " >%3d: %d\n", NCSIZE*8, mem.sizeCnt[NCSIZE-1]); } fclose(out); } /* ** Return the number of times sqlite3MemMalloc() has been called. */ SQLITE_PRIVATE int sqlite3MemdebugMallocCount(){ int i; int nTotal = 0; for(i=0; i<NCSIZE; i++){ nTotal += mem.sizeCnt[i]; } return nTotal; } #endif /* SQLITE_MEMDEBUG */ ................................................................................ ** implementations. Once sqlite3_initialize() has been called, ** the amount of memory available to SQLite is fixed and cannot ** be changed. ** ** This version of the memory allocation subsystem is included ** in the build only if SQLITE_ENABLE_MEMSYS3 is defined. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** This version of the memory allocator is only built into the library ** SQLITE_ENABLE_MEMSYS3 is defined. Defining this symbol does not ** mean that the library will use a memory-pool by default, just that ** it is available. The mempool allocator is activated by calling ................................................................................ /* ** Memory available for allocation. nPool is the size of the array ** (in Mem3Blocks) pointed to by aPool less 2. */ u32 nPool; Mem3Block *aPool; /* Mem3Block aPool[SQLITE_MEMORY_SIZE/sizeof(Mem3Block)+2]; */ } mem3; /* ** Unlink the chunk at mem3.aPool[i] from list it is currently ** on. *pRoot is the list that i is a member of. */ static void memsys3UnlinkFromList(u32 i, u32 *pRoot){ ................................................................................ memsys3Unlink(mem3.iMaster+mem3.szMaster); mem3.szMaster += mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.size4x/4; mem3.aPool[mem3.iMaster-1].u.hdr.size4x = mem3.szMaster*4 | x; mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.prevSize = mem3.szMaster; } } } /* ** Allocate nBytes of memory. */ static void *memsys3Malloc(int nBytes){ sqlite3_int64 *p; assert( nBytes>0 ); /* malloc.c filters out 0 byte requests */ ................................................................................ void memsys3Free(void *pPrior){ assert( pPrior ); memsys3Enter(); memsys3FreeUnsafe(pPrior); memsys3Leave(); } /* ** Return the size of an outstanding allocation, in bytes. The ** size returned omits the 8-byte header overhead. This only ** works for chunks that are currently checked out. */ static int memsys3Size(void *p){ Mem3Block *pBlock; if( p==0 ) return 0; pBlock = (Mem3Block*)p; assert( (pBlock[-1].u.hdr.size4x&1)!=0 ); return (pBlock[-1].u.hdr.size4x&~3)*2 - 4; } /* ** Change the size of an existing memory allocation */ void *memsys3Realloc(void *pPrior, int nBytes){ int nOld; void *p; if( pPrior==0 ){ ................................................................................ } memsys3FreeUnsafe(pPrior); } memsys3Leave(); return p; } /* ** Round up a request size to the next valid allocation size. */ static int memsys3Roundup(int n){ return (n+7) & ~7; } /* ** Initialize this module. */ static int memsys3Init(void *NotUsed){ if( !sqlite3Config.pHeap ){ return SQLITE_ERROR; } ................................................................................ ** implementations. Once sqlite3_initialize() has been called, ** the amount of memory available to SQLite is fixed and cannot ** be changed. ** ** This version of the memory allocation subsystem is included ** in the build only if SQLITE_ENABLE_MEMSYS5 is defined. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** This version of the memory allocator is used only when ** SQLITE_POW2_MEMORY_SIZE is defined. */ #ifdef SQLITE_ENABLE_MEMSYS5 ................................................................................ }; return &memsys5Methods; } #endif /* SQLITE_ENABLE_MEMSYS5 */ /************** End of mem5.c ************************************************/ /************** Begin file mutex.c *******************************************/ /* ** 2007 August 14 ** ** The author disclaims copyright to this source code. In place of ** a legal notice, here is a blessing: ** ................................................................................ ** exclusion and is thus suitable for use only in applications ** that use SQLite in a single thread. But this implementation ** does do a lot of error checking on mutexes to make sure they ** are called correctly and at appropriate times. Hence, this ** implementation is suitable for testing. ** debugging purposes ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef SQLITE_MUTEX_NOOP /* ** Initialize the mutex system. */ SQLITE_PRIVATE int sqlite3MutexInit(void){ ................................................................................ ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains the C functions that implement mutexes for OS/2 ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** The code in this file is only used if SQLITE_MUTEX_OS2 is defined. ** See the mutex.h file for details. */ #ifdef SQLITE_MUTEX_OS2 ................................................................................ ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains the C functions that implement mutexes for pthreads ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** The code in this file is only used if we are compiling threadsafe ** under unix with pthreads. ** ** Note that this implementation requires a version of pthreads that ................................................................................ ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains the C functions that implement mutexes for win32 ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** The code in this file is only used if we are compiling multithreaded ** on a win32 system. */ #ifdef SQLITE_MUTEX_W32 ................................................................................ ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** ** Memory allocation functions used throughout sqlite. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** This routine runs when the memory allocator sees that the ** total memory allocation is about to exceed the soft heap ** limit. */ ................................................................................ if( sqlite3Config.m.xMalloc==0 ){ sqlite3MemSetDefault(); } memset(&mem0, 0, sizeof(mem0)); if( sqlite3Config.bCoreMutex ){ mem0.mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MEM); } if( sqlite3Config.pScratch && sqlite3Config.szScratch>=3000 && sqlite3Config.nScratch>0 ){ int i; mem0.aScratchFree = (u32*)&((char*)sqlite3Config.pScratch) [sqlite3Config.szScratch*sqlite3Config.nScratch]; for(i=0; i<sqlite3Config.nScratch; i++){ mem0.aScratchFree[i] = i; } mem0.nScratchFree = sqlite3Config.nScratch; }else{ sqlite3Config.pScratch = 0; sqlite3Config.szScratch = 0; } if( sqlite3Config.pPage && sqlite3Config.szPage>=512 && sqlite3Config.nPage>0 ){ int i; mem0.aPageFree = (u32*)&((char*)sqlite3Config.pPage) [sqlite3Config.szPage*sqlite3Config.nPage]; for(i=0; i<sqlite3Config.nPage; i++){ mem0.aPageFree[i] = i; } mem0.nPageFree = sqlite3Config.nPage; }else{ sqlite3Config.pPage = 0; sqlite3Config.szPage = 0; ................................................................................ } } p = sqlite3Config.m.xMalloc(nFull); if( p==0 && mem0.alarmCallback ){ sqlite3MallocAlarm(nFull); p = sqlite3Config.m.xMalloc(nFull); } if( p ) sqlite3StatusAdd(SQLITE_STATUS_MEMORY_USED, nFull); *pp = p; return nFull; } /* ** Allocate memory. This routine is like sqlite3_malloc() except that it ** assumes the memory subsystem has already been initialized. ................................................................................ goto scratch_overflow; }else{ int i; i = mem0.aScratchFree[--mem0.nScratchFree]; sqlite3_mutex_leave(mem0.mutex); i *= sqlite3Config.szScratch; sqlite3StatusAdd(SQLITE_STATUS_SCRATCH_USED, 1); p = (void*)&((char*)sqlite3Config.pScratch)[i]; } } #if SQLITE_THREADSAFE==0 && !defined(NDEBUG) scratchAllocOut = p!=0; #endif return p; scratch_overflow: if( sqlite3Config.bMemstat ){ sqlite3_mutex_enter(mem0.mutex); n = mallocWithAlarm(n, &p); if( p ) sqlite3StatusAdd(SQLITE_STATUS_SCRATCH_OVERFLOW, n); sqlite3_mutex_leave(mem0.mutex); }else{ p = sqlite3Config.m.xMalloc(n); } #if SQLITE_THREADSAFE==0 && !defined(NDEBUG) ................................................................................ sqlite3_mutex_leave(mem0.mutex); goto page_overflow; }else{ int i; i = mem0.aPageFree[--mem0.nPageFree]; sqlite3_mutex_leave(mem0.mutex); i *= sqlite3Config.szPage; sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_USED, 1); p = (void*)&((char*)sqlite3Config.pPage)[i]; } } return p; page_overflow: if( sqlite3Config.bMemstat ){ sqlite3_mutex_enter(mem0.mutex); n = mallocWithAlarm(n, &p); if( p ) sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_OVERFLOW, n); sqlite3_mutex_leave(mem0.mutex); }else{ p = sqlite3Config.m.xMalloc(n); } return p; ................................................................................ i /= sqlite3Config.szPage; assert( i>=0 && i<sqlite3Config.nPage ); sqlite3_mutex_enter(mem0.mutex); assert( mem0.nPageFree<sqlite3Config.nPage ); mem0.aPageFree[mem0.nPageFree++] = i; sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_USED, -1); sqlite3_mutex_leave(mem0.mutex); #ifndef NDEBUG /* Assert that a duplicate was not just inserted into aPageFree[]. */ for(i=0; i<mem0.nPageFree-1; i++){ assert( mem0.aPageFree[i]!=mem0.aPageFree[mem0.nPageFree-1] ); } #endif } } } /* ** Return the size of a memory allocation previously obtained from ** sqlite3Malloc() or sqlite3_malloc(). */ SQLITE_PRIVATE int sqlite3MallocSize(void *p){ return sqlite3Config.m.xSize(p); } /* ** Free memory previously obtained from sqlite3Malloc(). */ SQLITE_API void sqlite3_free(void *p){ if( p==0 ) return; ................................................................................ sqlite3StatusAdd(SQLITE_STATUS_MEMORY_USED, -sqlite3MallocSize(p)); sqlite3Config.m.xFree(p); sqlite3_mutex_leave(mem0.mutex); }else{ sqlite3Config.m.xFree(p); } } /* ** Change the size of an existing memory allocation */ SQLITE_PRIVATE void *sqlite3Realloc(void *pOld, int nBytes){ int nOld, nNew; void *pNew; ................................................................................ } pNew = sqlite3Config.m.xRealloc(pOld, nNew); if( pNew==0 && mem0.alarmCallback ){ sqlite3MallocAlarm(nBytes); pNew = sqlite3Config.m.xRealloc(pOld, nNew); } if( pNew ){ sqlite3StatusAdd(SQLITE_STATUS_MEMORY_USED, nNew-nOld); } } sqlite3_mutex_leave(mem0.mutex); }else{ pNew = sqlite3Config.m.xRealloc(pOld, nBytes); } ................................................................................ } /* ** Allocate and zero memory. If the allocation fails, make ** the mallocFailed flag in the connection pointer. */ SQLITE_PRIVATE void *sqlite3DbMallocRaw(sqlite3 *db, int n){ void *p = 0; if( !db || db->mallocFailed==0 ){ p = sqlite3Malloc(n); if( !p && db ){ db->mallocFailed = 1; } } return p; } /* ** Resize the block of memory pointed to by p to n bytes. If the ** resize fails, set the mallocFailed flag inthe connection object. */ SQLITE_PRIVATE void *sqlite3DbRealloc(sqlite3 *db, void *p, int n){ void *pNew = 0; if( db->mallocFailed==0 ){ pNew = sqlite3_realloc(p, n); if( !pNew ){ db->mallocFailed = 1; } } return pNew; } /* ** Attempt to reallocate p. If the reallocation fails, then free p ** and set the mallocFailed flag in the database connection. */ SQLITE_PRIVATE void *sqlite3DbReallocOrFree(sqlite3 *db, void *p, int n){ void *pNew; pNew = sqlite3DbRealloc(db, p, n); if( !pNew ){ sqlite3_free(p); } return pNew; } /* ** Make a copy of a string in memory obtained from sqliteMalloc(). These ** functions call sqlite3MallocRaw() directly instead of sqliteMalloc(). This ** is because when memory debugging is turned on, these two functions are ** called via macros that record the current file and line number in the ** ThreadData structure. */ SQLITE_PRIVATE char *sqlite3StrDup(const char *z){ char *zNew; int n; if( z==0 ) return 0; n = strlen(z)+1; zNew = sqlite3Malloc(n); if( zNew ) memcpy(zNew, z, n); return zNew; } SQLITE_PRIVATE char *sqlite3StrNDup(const char *z, int n){ char *zNew; if( z==0 ) return 0; zNew = sqlite3Malloc(n+1); if( zNew ){ memcpy(zNew, z, n); zNew[n] = 0; } return zNew; } SQLITE_PRIVATE char *sqlite3DbStrDup(sqlite3 *db, const char *z){ char *zNew = sqlite3StrDup(z); if( z && !zNew ){ db->mallocFailed = 1; } return zNew; } SQLITE_PRIVATE char *sqlite3DbStrNDup(sqlite3 *db, const char *z, int n){ char *zNew = sqlite3StrNDup(z, n); if( z && !zNew ){ db->mallocFailed = 1; } return zNew; } /* ** Create a string from the zFromat argument and the va_list that follows. ** Store the string in memory obtained from sqliteMalloc() and make *pz ................................................................................ SQLITE_PRIVATE void sqlite3SetString(char **pz, sqlite3 *db, const char *zFormat, ...){ va_list ap; char *z; va_start(ap, zFormat); z = sqlite3VMPrintf(db, zFormat, ap); va_end(ap); sqlite3_free(*pz); *pz = z; } /* ** This function must be called before exiting any API function (i.e. ** returning control to the user) that has called sqlite3_malloc or ................................................................................ /* ** The "printf" code that follows dates from the 1980's. It is in ** the public domain. The original comments are included here for ** completeness. They are very out-of-date but might be useful as ** an historical reference. Most of the "enhancements" have been backed ** out so that the functionality is now the same as standard printf(). ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ ** ************************************************************************** ** ** The following modules is an enhanced replacement for the "printf" subroutines ** found in the standard C library. The following enhancements are ** supported: ** ................................................................................ if( szNew > p->mxAlloc ){ sqlite3StrAccumReset(p); p->tooBig = 1; return; }else{ p->nAlloc = szNew; } zNew = sqlite3Malloc( p->nAlloc ); if( zNew ){ memcpy(zNew, p->zText, p->nChar); sqlite3StrAccumReset(p); p->zText = zNew; }else{ p->mallocFailed = 1; sqlite3StrAccumReset(p); ................................................................................ ** Return a pointer to the resulting string. Return a NULL ** pointer if any kind of error was encountered. */ SQLITE_PRIVATE char *sqlite3StrAccumFinish(StrAccum *p){ if( p->zText ){ p->zText[p->nChar] = 0; if( p->useMalloc && p->zText==p->zBase ){ p->zText = sqlite3Malloc( p->nChar+1 ); if( p->zText ){ memcpy(p->zText, p->zBase, p->nChar+1); }else{ p->mallocFailed = 1; } } } ................................................................................ } /* ** Reset an StrAccum string. Reclaim all malloced memory. */ SQLITE_PRIVATE void sqlite3StrAccumReset(StrAccum *p){ if( p->zText!=p->zBase ){ sqlite3_free(p->zText); } p->zText = 0; } /* ** Initialize a string accumulator */ SQLITE_PRIVATE void sqlite3StrAccumInit(StrAccum *p, char *zBase, int n, int mx){ p->zText = p->zBase = zBase; p->nChar = 0; p->nAlloc = n; p->mxAlloc = mx; p->useMalloc = 1; p->tooBig = 0; p->mallocFailed = 0; } ................................................................................ */ SQLITE_PRIVATE char *sqlite3VMPrintf(sqlite3 *db, const char *zFormat, va_list ap){ char *z; char zBase[SQLITE_PRINT_BUF_SIZE]; StrAccum acc; sqlite3StrAccumInit(&acc, zBase, sizeof(zBase), db ? db->aLimit[SQLITE_LIMIT_LENGTH] : SQLITE_MAX_LENGTH); sqlite3VXPrintf(&acc, 1, zFormat, ap); z = sqlite3StrAccumFinish(&acc); if( acc.mallocFailed && db ){ db->mallocFailed = 1; } return z; } ................................................................................ va_list ap; char *z; va_start(ap, zFormat); z = sqlite3VMPrintf(db, zFormat, ap); va_end(ap); return z; } /* ** Print into memory obtained from sqlite3_malloc(). Omit the internal ** %-conversion extensions. */ SQLITE_API char *sqlite3_vmprintf(const char *zFormat, va_list ap){ char *z; ................................................................................ ************************************************************************* ** This file contains code to implement a pseudo-random number ** generator (PRNG) for SQLite. ** ** Random numbers are used by some of the database backends in order ** to generate random integer keys for tables or random filenames. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* All threads share a single random number generator. ** This structure is the current state of the generator. */ static struct sqlite3PrngType { ................................................................................ ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains routines used to translate between UTF-8, ** UTF-16, UTF-16BE, and UTF-16LE. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ ** ** Notes on UTF-8: ** ** Byte-0 Byte-1 Byte-2 Byte-3 Value ** 0xxxxxxx 00000000 00000000 0xxxxxxx ** 110yyyyy 10xxxxxx 00000000 00000yyy yyxxxxxx ** 1110zzzz 10yyyyyy 10xxxxxx 00000000 zzzzyyyy yyxxxxxx ................................................................................ ************************************************************************* ** This is the header file for information that is private to the ** VDBE. This information used to all be at the top of the single ** source code file "vdbe.c". When that file became too big (over ** 6000 lines long) it was split up into several smaller files and ** this header information was factored out. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef _VDBEINT_H_ #define _VDBEINT_H_ /* ** intToKey() and keyToInt() used to transform the rowid. But with ** the latest versions of the design they are no-ops. ................................................................................ ** of that structure is private to this file. ** ** The Fifo structure describes the entire fifo. */ typedef struct Fifo Fifo; struct Fifo { int nEntry; /* Total number of entries */ FifoPage *pFirst; /* First page on the list */ FifoPage *pLast; /* Last page on the list */ }; /* ** A Context stores the last insert rowid, the last statement change count, ** and the current statement change count (i.e. changes since last statement). ................................................................................ int inTempTrans; /* True if temp database is transactioned */ int nResColumn; /* Number of columns in one row of the result set */ char **azResColumn; /* Values for one row of result */ char *zErrMsg; /* Error message written here */ Mem *pResultSet; /* Pointer to an array of results */ u8 explain; /* True if EXPLAIN present on SQL command */ u8 changeCntOn; /* True to update the change-counter */ u8 aborted; /* True if ROLLBACK in another VM causes an abort */ u8 expired; /* True if the VM needs to be recompiled */ u8 minWriteFileFormat; /* Minimum file format for writable database files */ u8 inVtabMethod; /* See comments above */ int nChange; /* Number of db changes made since last reset */ i64 startTime; /* Time when query started - used for profiling */ int btreeMask; /* Bitmask of db->aDb[] entries referenced */ BtreeMutexArray aMutex; /* An array of Btree used here and needing locks */ ................................................................................ SQLITE_PRIVATE int sqlite3VdbeSerialGet(const unsigned char*, u32, Mem*); SQLITE_PRIVATE void sqlite3VdbeDeleteAuxData(VdbeFunc*, int); int sqlite2BtreeKeyCompare(BtCursor *, const void *, int, int, int *); SQLITE_PRIVATE int sqlite3VdbeIdxKeyCompare(Cursor*,UnpackedRecord *,int,const unsigned char*,int*); SQLITE_PRIVATE int sqlite3VdbeIdxRowid(BtCursor *, i64 *); SQLITE_PRIVATE int sqlite3MemCompare(const Mem*, const Mem*, const CollSeq*); SQLITE_PRIVATE int sqlite3VdbeIdxRowidLen(const u8*); SQLITE_PRIVATE int sqlite3VdbeExec(Vdbe*); SQLITE_PRIVATE int sqlite3VdbeList(Vdbe*); SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe*); SQLITE_PRIVATE int sqlite3VdbeChangeEncoding(Mem *, int); SQLITE_PRIVATE int sqlite3VdbeMemTooBig(Mem*); SQLITE_PRIVATE int sqlite3VdbeMemCopy(Mem*, const Mem*); SQLITE_PRIVATE void sqlite3VdbeMemShallowCopy(Mem*, const Mem*, int); ................................................................................ SQLITE_PRIVATE int sqlite3VdbeMemNulTerminate(Mem*); SQLITE_PRIVATE int sqlite3VdbeMemSetStr(Mem*, const char*, int, u8, void(*)(void*)); SQLITE_PRIVATE void sqlite3VdbeMemSetInt64(Mem*, i64); SQLITE_PRIVATE void sqlite3VdbeMemSetDouble(Mem*, double); SQLITE_PRIVATE void sqlite3VdbeMemSetNull(Mem*); SQLITE_PRIVATE void sqlite3VdbeMemSetZeroBlob(Mem*,int); SQLITE_PRIVATE int sqlite3VdbeMemMakeWriteable(Mem*); SQLITE_PRIVATE int sqlite3VdbeMemDynamicify(Mem*); SQLITE_PRIVATE int sqlite3VdbeMemStringify(Mem*, int); SQLITE_PRIVATE i64 sqlite3VdbeIntValue(Mem*); SQLITE_PRIVATE int sqlite3VdbeMemIntegerify(Mem*); SQLITE_PRIVATE double sqlite3VdbeRealValue(Mem*); SQLITE_PRIVATE void sqlite3VdbeIntegerAffinity(Mem*); SQLITE_PRIVATE int sqlite3VdbeMemRealify(Mem*); SQLITE_PRIVATE int sqlite3VdbeMemNumerify(Mem*); ................................................................................ #endif SQLITE_PRIVATE int sqlite3VdbeMemTranslate(Mem*, u8); #ifdef SQLITE_DEBUG SQLITE_PRIVATE void sqlite3VdbePrintSql(Vdbe*); SQLITE_PRIVATE void sqlite3VdbeMemPrettyPrint(Mem *pMem, char *zBuf); #endif SQLITE_PRIVATE int sqlite3VdbeMemHandleBom(Mem *pMem); SQLITE_PRIVATE void sqlite3VdbeFifoInit(Fifo*); SQLITE_PRIVATE int sqlite3VdbeFifoPush(Fifo*, i64); SQLITE_PRIVATE int sqlite3VdbeFifoPop(Fifo*, i64*); SQLITE_PRIVATE void sqlite3VdbeFifoClear(Fifo*); #ifndef SQLITE_OMIT_INCRBLOB SQLITE_PRIVATE int sqlite3VdbeMemExpandBlob(Mem *); #else ................................................................................ ** and rendered as themselves even though they are technically ** invalid characters. ** ** * This routine accepts an infinite number of different UTF8 encodings ** for unicode values 0x80 and greater. It do not change over-length ** encodings to 0xfffd as some systems recommend. */ SQLITE_PRIVATE int sqlite3Utf8Read( const unsigned char *z, /* First byte of UTF-8 character */ const unsigned char *zTerm, /* Pretend this byte is 0x00 */ const unsigned char **pzNext /* Write first byte past UTF-8 char here */ ){ int c = *(z++); if( c>=0xc0 ){ c = sqlite3UtfTrans1[c-0xc0]; while( z!=zTerm && (*z & 0xc0)==0x80 ){ c = (c<<6) + (0x3f & *(z++)); } if( c<0x80 || (c&0xFFFFF800)==0xD800 || (c&0xFFFFFFFE)==0xFFFE ){ c = 0xFFFD; } } *pzNext = z; return c; } /* ** If the TRANSLATE_TRACE macro is defined, the value of each Mem is ** printed on stderr on the way into and out of sqlite3VdbeMemTranslate(). */ ................................................................................ } z = zOut; if( pMem->enc==SQLITE_UTF8 ){ if( desiredEnc==SQLITE_UTF16LE ){ /* UTF-8 -> UTF-16 Little-endian */ while( zIn<zTerm ){ c = sqlite3Utf8Read(zIn, zTerm, (const u8**)&zIn); WRITE_UTF16LE(z, c); } }else{ assert( desiredEnc==SQLITE_UTF16BE ); /* UTF-8 -> UTF-16 Big-endian */ while( zIn<zTerm ){ c = sqlite3Utf8Read(zIn, zTerm, (const u8**)&zIn); WRITE_UTF16BE(z, c); } } pMem->n = z - zOut; *z++ = 0; }else{ assert( desiredEnc==SQLITE_UTF8 ); ................................................................................ ** ************************************************************************* ** Utility functions used throughout sqlite. ** ** This file contains functions for allocating memory, comparing ** strings, and stuff like that. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** Return true if the floating point value is Not a Number. */ SQLITE_PRIVATE int sqlite3IsNaN(double x){ /* This NaN test sometimes fails if compiled on GCC with -ffast-math. ** On the other hand, the use of -ffast-math comes with the following ** warning: ** ** This option [-ffast-math] should never be turned on by any ** -O option since it can result in incorrect output for programs ** which depend on an exact implementation of IEEE or ISO ** rules/specifications for math functions. */ #ifdef __FAST_MATH__ # error SQLite will not work correctly with the -ffast-math option of GCC. #endif volatile double y = x; volatile double z = y; return y!=z; ................................................................................ /* ** Return the length of a string, except do not allow the string length ** to exceed the SQLITE_LIMIT_LENGTH setting. */ SQLITE_PRIVATE int sqlite3Strlen(sqlite3 *db, const char *z){ const char *z2 = z; while( *z2 ){ z2++; } if( z2 > &z[db->aLimit[SQLITE_LIMIT_LENGTH]] ){ return db->aLimit[SQLITE_LIMIT_LENGTH]; }else{ return (int)(z2 - z); } } /* ** Set the most recent error code and error string for the sqlite ** handle "db". The error code is set to "err_code". ** ................................................................................ db->errCode = err_code; if( zFormat ){ char *z; va_list ap; va_start(ap, zFormat); z = sqlite3VMPrintf(db, zFormat, ap); va_end(ap); sqlite3ValueSetStr(db->pErr, -1, z, SQLITE_UTF8, sqlite3_free); }else{ sqlite3ValueSetStr(db->pErr, 0, 0, SQLITE_UTF8, SQLITE_STATIC); } } } /* ................................................................................ ** last thing the sqlite3_prepare() function does is copy the error ** stored by this function into the database handle using sqlite3Error(). ** Function sqlite3Error() should be used during statement execution ** (sqlite3_step() etc.). */ SQLITE_PRIVATE void sqlite3ErrorMsg(Parse *pParse, const char *zFormat, ...){ va_list ap; pParse->nErr++; sqlite3_free(pParse->zErrMsg); va_start(ap, zFormat); pParse->zErrMsg = sqlite3VMPrintf(pParse->db, zFormat, ap); va_end(ap); if( pParse->rc==SQLITE_OK ){ pParse->rc = SQLITE_ERROR; } } /* ** Clear the error message in pParse, if any */ SQLITE_PRIVATE void sqlite3ErrorClear(Parse *pParse){ sqlite3_free(pParse->zErrMsg); pParse->zErrMsg = 0; pParse->nErr = 0; } /* ** Convert an SQL-style quoted string into a normal string by removing ** the quote characters. The conversion is done in-place. If the ................................................................................ ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This is the implementation of generic hash-tables ** used in SQLite. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* Turn bulk memory into a hash table object by initializing the ** fields of the Hash structure. ** ** "pNew" is a pointer to the hash table that is to be initialized. ** keyClass is one of the constants SQLITE_HASH_INT, SQLITE_HASH_POINTER, ................................................................................ ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ****************************************************************************** ** ** This file contains code that is specific to OS/2. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #if SQLITE_OS_OS2 /* ** A Note About Memory Allocation: ................................................................................ ** This file contains macros and a little bit of code that is common to ** all of the platform-specific files (os_*.c) and is #included into those ** files. ** ** This file should be #included by the os_*.c files only. It is not a ** general purpose header file. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef _OS_COMMON_H_ #define _OS_COMMON_H_ /* ** At least two bugs have slipped in because we changed the MEMORY_DEBUG ** macro to SQLITE_DEBUG and some older makefiles have not yet made the ................................................................................ ** May you share freely, never taking more than you give. ** ****************************************************************************** ** ** This file contains inline asm code for retrieving "high-performance" ** counters for x86 class CPUs. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef _HWTIME_H_ #define _HWTIME_H_ /* ** The following routine only works on pentium-class (or newer) processors. ** It uses the RDTSC opcode to read the cycle count value out of the ................................................................................ __inline__ sqlite_uint64 sqlite3Hwtime(void){ unsigned long val; __asm__ __volatile__ ("rdtsc" : "=A" (val)); return val; } #else #error Need implementation of sqlite3Hwtime() for your platform. /* ** To compile without implementing sqlite3Hwtime() for your platform, ** you can remove the above #error and use the following ................................................................................ static UconvObject ucUtf8 = NULL; /* convert between UTF-8 and UCS-2 */ static UconvObject uclCp = NULL; /* convert between local codepage and UCS-2 */ /* ** Helper function to initialize the conversion objects from and to UTF-8. */ static void initUconvObjects( void ){ printf("init them\n"); if( UniCreateUconvObject( UTF_8, &ucUtf8 ) != ULS_SUCCESS ) ucUtf8 = NULL; if ( UniCreateUconvObject( (UniChar *)L"@path=yes", &uclCp ) != ULS_SUCCESS ) uclCp = NULL; } /* ** Helper function to free the conversion objects from and to UTF-8. */ static void freeUconvObjects( void ){ printf("free them\n"); if ( ucUtf8 ) UniFreeUconvObject( ucUtf8 ); if ( uclCp ) UniFreeUconvObject( uclCp ); ucUtf8 = NULL; uclCp = NULL; } ................................................................................ ** The two-step process: first convert the incoming UTF-8 string ** into UCS-2 and then from UCS-2 to the current codepage. ** The returned char pointer has to be freed. */ static char *convertUtf8PathToCp( const char *in ){ UniChar tempPath[CCHMAXPATH]; char *out = (char *)calloc( CCHMAXPATH, 1 ); printf("convertUtf8PathToCp(%s)\n", in); if( !out ) return NULL; if( !ucUtf8 || !uclCp ) initUconvObjects(); ................................................................................ /* determine string for the conversion of UTF-8 which is CP1208 */ if( UniStrToUcs( ucUtf8, tempPath, (char *)in, CCHMAXPATH ) != ULS_SUCCESS ) return out; /* if conversion fails, return the empty string */ /* conversion for current codepage which can be used for paths */ UniStrFromUcs( uclCp, out, tempPath, CCHMAXPATH ); printf("%s -> Cp = %s\n", in, out); return out; } /* ** Helper function to convert filenames from local codepage to UTF-8. ** The two-step process: first convert the incoming codepage-specific ** string into UCS-2 and then from UCS-2 to the codepage of UTF-8. ................................................................................ ** ** This function is non-static to be able to use this in shell.c and ** similar applications that take command line arguments. */ char *convertCpPathToUtf8( const char *in ){ UniChar tempPath[CCHMAXPATH]; char *out = (char *)calloc( CCHMAXPATH, 1 ); printf("convertCpPathToUtf8(%s)\n", in); if( !out ) return NULL; if( !ucUtf8 || !uclCp ) initUconvObjects(); ................................................................................ /* conversion for current codepage which can be used for paths */ if( UniStrToUcs( uclCp, tempPath, (char *)in, CCHMAXPATH ) != ULS_SUCCESS ) return out; /* if conversion fails, return the empty string */ /* determine string for the conversion of UTF-8 which is CP1208 */ UniStrFromUcs( ucUtf8, out, tempPath, CCHMAXPATH ); printf("%s -> Utf8 = %s\n", in, out); return out; } /* ** This vector defines all the methods that can operate on an ** sqlite3_file for os2. */ ................................................................................ zBuf[j] = (char)zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ]; } zBuf[j] = 0; OSTRACE2( "TEMP FILENAME: %s\n", zBuf ); return SQLITE_OK; } /* ** Open a file. */ static int os2Open( sqlite3_vfs *pVfs, /* Not used */ const char *zName, /* Name of the file */ ................................................................................ ulOpenMode |= OPEN_SHARE_DENYWRITE; OSTRACE1( "OPEN share read only\n" ); } if( flags & (SQLITE_OPEN_TEMP_DB | SQLITE_OPEN_TEMP_JOURNAL | SQLITE_OPEN_SUBJOURNAL) ){ char pathUtf8[CCHMAXPATH]; /*ulFileAttribute = FILE_HIDDEN; //for debugging, we want to make sure it is deleted*/ ulFileAttribute = FILE_NORMAL; sqlite3OsFullPathname( pVfs, zName, CCHMAXPATH, pathUtf8 ); pFile->pathToDel = convertUtf8PathToCp( pathUtf8 ); OSTRACE1( "OPEN hidden/delete on close file attributes\n" ); }else{ ulFileAttribute = FILE_ARCHIVED | FILE_NORMAL; pFile->pathToDel = NULL; OSTRACE1( "OPEN normal file attribute\n" ); } ................................................................................ OSTRACE7( "OPEN Invalid handle rc=%d: zName=%s, ulAction=%#lx, ulAttr=%#lx, ulFlags=%#lx, ulMode=%#lx\n", rc, zName, ulAction, ulFileAttribute, ulOpenFlags, ulOpenMode ); if( pFile->pathToDel ) free( pFile->pathToDel ); pFile->pathToDel = NULL; if( flags & SQLITE_OPEN_READWRITE ){ OSTRACE2( "OPEN %d Invalid handle\n", ((flags | SQLITE_OPEN_READONLY) & ~SQLITE_OPEN_READWRITE) ); return os2Open( 0, zName, id, ((flags | SQLITE_OPEN_READONLY) & ~SQLITE_OPEN_READWRITE), pOutFlags ); }else{ return SQLITE_CANTOPEN; } } ................................................................................ assert( !"Invalid flags argument" ); } *pOut = rc; return SQLITE_OK; } /* ** Turn a relative pathname into a full pathname. Write the full ** pathname into zFull[]. zFull[] will be at least pVfs->mxPathname ** bytes in size. */ static int os2FullPathname( sqlite3_vfs *pVfs, /* Pointer to vfs object */ const char *zRelative, /* Possibly relative input path */ int nFull, /* Size of output buffer in bytes */ char *zFull /* Output buffer */ ){ char *zRelativeCp = convertUtf8PathToCp( zRelative ); char zFullCp[CCHMAXPATH]; char *zFullUTF; APIRET rc = DosQueryPathInfo( zRelativeCp, FIL_QUERYFULLNAME, zFullCp, CCHMAXPATH ); free( zRelativeCp ); zFullUTF = convertCpPathToUtf8( zFullCp ); sqlite3_snprintf( nFull, zFull, zFullUTF ); free( zFullUTF ); return rc == NO_ERROR ? SQLITE_OK : SQLITE_IOERR; } #ifndef SQLITE_OMIT_LOAD_EXTENSION /* ** Interfaces for opening a shared library, finding entry points ** within the shared library, and closing the shared library. */ /* ** Interfaces for opening a shared library, finding entry points ................................................................................ return 0; } /* ** Initialize and deinitialize the operating system interface. */ SQLITE_API int sqlite3_os_init(void){ initUconvObjects(); static sqlite3_vfs os2Vfs = { 1, /* iVersion */ sizeof(os2File), /* szOsFile */ CCHMAXPATH, /* mxPathname */ 0, /* pNext */ "os2", /* zName */ 0, /* pAppData */ ................................................................................ os2DlClose, /* xDlClose */ os2Randomness, /* xRandomness */ os2Sleep, /* xSleep */ os2CurrentTime, /* xCurrentTime */ os2GetLastError /* xGetLastError */ }; sqlite3_vfs_register(&os2Vfs, 1); return SQLITE_OK; } SQLITE_API int sqlite3_os_end(void){ freeUconvObjects(); return SQLITE_OK; } ................................................................................ ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ****************************************************************************** ** ** This file contains code that is specific to Unix systems. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #if SQLITE_OS_UNIX /* This file is used on unix only */ /* ** If SQLITE_ENABLE_LOCKING_STYLE is defined, then several different ** locking implementations are provided: ** ................................................................................ ** This file contains macros and a little bit of code that is common to ** all of the platform-specific files (os_*.c) and is #included into those ** files. ** ** This file should be #included by the os_*.c files only. It is not a ** general purpose header file. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef _OS_COMMON_H_ #define _OS_COMMON_H_ /* ** At least two bugs have slipped in because we changed the MEMORY_DEBUG ** macro to SQLITE_DEBUG and some older makefiles have not yet made the ................................................................................ ** May you share freely, never taking more than you give. ** ****************************************************************************** ** ** This file contains inline asm code for retrieving "high-performance" ** counters for x86 class CPUs. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef _HWTIME_H_ #define _HWTIME_H_ /* ** The following routine only works on pentium-class (or newer) processors. ** It uses the RDTSC opcode to read the cycle count value out of the ................................................................................ __inline__ sqlite_uint64 sqlite3Hwtime(void){ unsigned long val; __asm__ __volatile__ ("rdtsc" : "=A" (val)); return val; } #else #error Need implementation of sqlite3Hwtime() for your platform. /* ** To compile without implementing sqlite3Hwtime() for your platform, ** you can remove the above #error and use the following ................................................................................ ** object keeps a count of the number of unixFile pointing to it. */ struct lockInfo { struct lockKey key; /* The lookup key */ int cnt; /* Number of SHARED locks held */ int locktype; /* One of SHARED_LOCK, RESERVED_LOCK etc. */ int nRef; /* Number of pointers to this structure */ }; /* ** An instance of the following structure serves as the key used ** to locate a particular openCnt structure given its inode. This ** is the same as the lockKey except that the thread ID is omitted. */ ................................................................................ */ struct openCnt { struct openKey key; /* The lookup key */ int nRef; /* Number of pointers to this structure */ int nLock; /* Number of outstanding locks */ int nPending; /* Number of pending close() operations */ int *aPending; /* Malloced space holding fd's awaiting a close() */ }; /* ** These hash tables map inodes and file descriptors (really, lockKey and ** openKey structures) into lockInfo and openCnt structures. Access to ** these hash tables must be protected by a mutex. */ static Hash lockHash = {SQLITE_HASH_BINARY, 0, 0, 0, 0, 0}; static Hash openHash = {SQLITE_HASH_BINARY, 0, 0, 0, 0, 0}; /* ** The locking styles are associated with the different file locking ** capabilities supported by different file systems. ** ** POSIX locking style fully supports shared and exclusive byte-range locks ** AFP locking only supports exclusive byte-range locks ................................................................................ ** can be used on file systems that do not offer any reliable file locking ** NO locking means that no locking will be attempted, this is only used for ** read-only file systems currently ** UNSUPPORTED means that no locking will be attempted, this is only used for ** file systems that are known to be unsupported */ #define LOCKING_STYLE_POSIX 1 #define LOCKING_STYLE_FLOCK 2 #define LOCKING_STYLE_DOTFILE 3 #define LOCKING_STYLE_NONE 4 #define LOCKING_STYLE_AFP 5 /* ** Helper functions to obtain and relinquish the global mutex. */ static void enterMutex(){ sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)); ................................................................................ /* ** Release a lockInfo structure previously allocated by findLockInfo(). */ static void releaseLockInfo(struct lockInfo *pLock){ if( pLock ){ pLock->nRef--; if( pLock->nRef==0 ){ sqlite3HashInsert(&lockHash, &pLock->key, sizeof(pLock->key), 0); sqlite3_free(pLock); } } } /* ** Release a openCnt structure previously allocated by findLockInfo(). */ static void releaseOpenCnt(struct openCnt *pOpen){ if( pOpen ){ pOpen->nRef--; if( pOpen->nRef==0 ){ sqlite3HashInsert(&openHash, &pOpen->key, sizeof(pOpen->key), 0); free(pOpen->aPending); sqlite3_free(pOpen); } } } #ifdef SQLITE_ENABLE_LOCKING_STYLE /* ................................................................................ rc = fstat(fd, &statbuf); if( rc!=0 ){ #ifdef EOVERFLOW if( errno==EOVERFLOW ) return SQLITE_NOLFS; #endif return SQLITE_IOERR; } memset(&key1, 0, sizeof(key1)); key1.dev = statbuf.st_dev; key1.ino = statbuf.st_ino; #if SQLITE_THREADSAFE if( threadsOverrideEachOthersLocks<0 ){ testThreadLockingBehavior(fd); } key1.tid = threadsOverrideEachOthersLocks ? 0 : pthread_self(); #endif memset(&key2, 0, sizeof(key2)); key2.dev = statbuf.st_dev; key2.ino = statbuf.st_ino; pLock = (struct lockInfo*)sqlite3HashFind(&lockHash, &key1, sizeof(key1)); if( pLock==0 ){ struct lockInfo *pOld; pLock = sqlite3_malloc( sizeof(*pLock) ); if( pLock==0 ){ rc = SQLITE_NOMEM; goto exit_findlockinfo; } pLock->key = key1; pLock->nRef = 1; pLock->cnt = 0; pLock->locktype = 0; pOld = sqlite3HashInsert(&lockHash, &pLock->key, sizeof(key1), pLock); if( pOld!=0 ){ assert( pOld==pLock ); sqlite3_free(pLock); rc = SQLITE_NOMEM; goto exit_findlockinfo; } }else{ pLock->nRef++; } *ppLock = pLock; if( ppOpen!=0 ){ pOpen = (struct openCnt*)sqlite3HashFind(&openHash, &key2, sizeof(key2)); if( pOpen==0 ){ struct openCnt *pOld; pOpen = sqlite3_malloc( sizeof(*pOpen) ); if( pOpen==0 ){ releaseLockInfo(pLock); rc = SQLITE_NOMEM; goto exit_findlockinfo; } pOpen->key = key2; pOpen->nRef = 1; pOpen->nLock = 0; pOpen->nPending = 0; pOpen->aPending = 0; pOld = sqlite3HashInsert(&openHash, &pOpen->key, sizeof(key2), pOpen); if( pOld!=0 ){ assert( pOld==pOpen ); sqlite3_free(pOpen); releaseLockInfo(pLock); rc = SQLITE_NOMEM; goto exit_findlockinfo; } }else{ pOpen->nRef++; } *ppOpen = pOpen; } exit_findlockinfo: ................................................................................ assert( id ); rc = fstat(((unixFile*)id)->h, &buf); SimulateIOError( rc=1 ); if( rc!=0 ){ return SQLITE_IOERR_FSTAT; } *pSize = buf.st_size; return SQLITE_OK; } /* ** This routine checks if there is a RESERVED lock held on the specified ** file by this or any other process. If such a lock is held, return ** non-zero. If the file is unlocked or holds only SHARED locks, then ................................................................................ pOpen->nLock--; assert( pOpen->nLock>=0 ); if( pOpen->nLock==0 && pOpen->nPending>0 ){ int i; for(i=0; i<pOpen->nPending; i++){ close(pOpen->aPending[i]); } free(pOpen->aPending); pOpen->nPending = 0; pOpen->aPending = 0; } } } leaveMutex(); if( rc==SQLITE_OK ) pFile->locktype = locktype; ................................................................................ /* If there are outstanding locks, do not actually close the file just ** yet because that would clear those locks. Instead, add the file ** descriptor to pOpen->aPending. It will be automatically closed when ** the last lock is cleared. */ int *aNew; struct openCnt *pOpen = pFile->pOpen; aNew = realloc( pOpen->aPending, (pOpen->nPending+1)*sizeof(int) ); if( aNew==0 ){ /* If a malloc fails, just leak the file descriptor */ }else{ pOpen->aPending = aNew; pOpen->aPending[pOpen->nPending] = pFile->h; pOpen->nPending++; pFile->h = -1; ................................................................................ dotlockUnlock(id, NO_LOCK); sqlite3_free(pFile->lockingContext); } return closeUnixFile(id); } #pragma mark No locking /* ** The nolockLockingContext is void */ typedef void nolockLockingContext; static int nolockCheckReservedLock(sqlite3_file *id, int *pResOut) { ................................................................................ /* ** Close a file. */ static int nolockClose(sqlite3_file *id) { return closeUnixFile(id); } #endif /* SQLITE_ENABLE_LOCKING_STYLE */ /* ** Information and control of an open file handle. */ static int unixFileControl(sqlite3_file *id, int op, void *pArg){ switch( op ){ case SQLITE_FCNTL_LOCKSTATE: { ................................................................................ ** and assigned here also. */ static int fillInUnixFile( sqlite3_vfs *pVfs, /* Pointer to vfs object */ int h, /* Open file descriptor of file being opened */ int dirfd, /* Directory file descriptor */ sqlite3_file *pId, /* Write to the unixFile structure here */ const char *zFilename /* Name of the file being opened */ ){ /* Macro to define the static contents of an sqlite3_io_methods ** structure for a unix backend file. Different locking methods ** require different functions for the xClose, xLock, xUnlock and ** xCheckReservedLock methods. */ #define IOMETHODS(xClose, xLock, xUnlock, xCheckReservedLock) { \ 1, /* iVersion */ \ ................................................................................ xCheckReservedLock, /* xCheckReservedLock */ \ unixFileControl, /* xFileControl */ \ unixSectorSize, /* xSectorSize */ \ unixDeviceCharacteristics /* xDeviceCapabilities */ \ } static sqlite3_io_methods aIoMethod[] = { IOMETHODS(unixClose, unixLock, unixUnlock, unixCheckReservedLock) #ifdef SQLITE_ENABLE_LOCKING_STYLE ,IOMETHODS(flockClose, flockLock, flockUnlock, flockCheckReservedLock) ,IOMETHODS(dotlockClose, dotlockLock, dotlockUnlock,dotlockCheckReservedLock) ,IOMETHODS(nolockClose, nolockLock, nolockUnlock, nolockCheckReservedLock) ,IOMETHODS(afpClose, afpLock, afpUnlock, afpCheckReservedLock) #endif }; int eLockingStyle; unixFile *pNew = (unixFile *)pId; int rc = SQLITE_OK; assert( pNew->pLock==NULL ); assert( pNew->pOpen==NULL ); OSTRACE3("OPEN %-3d %s\n", h, zFilename); pNew->h = h; pNew->dirfd = dirfd; SET_THREADID(pNew); assert(LOCKING_STYLE_POSIX==1); assert(LOCKING_STYLE_FLOCK==2); assert(LOCKING_STYLE_DOTFILE==3); assert(LOCKING_STYLE_NONE==4); assert(LOCKING_STYLE_AFP==5); eLockingStyle = detectLockingStyle(pVfs, zFilename, h); switch( eLockingStyle ){ case LOCKING_STYLE_POSIX: { enterMutex(); rc = findLockInfo(h, &pNew->pLock, &pNew->pOpen); leaveMutex(); ................................................................................ int flags, int *pOutFlags ){ int fd = 0; /* File descriptor returned by open() */ int dirfd = -1; /* Directory file descriptor */ int oflags = 0; /* Flags to pass to open() */ int eType = flags&0xFFFFFF00; /* Type of file to open */ int isExclusive = (flags & SQLITE_OPEN_EXCLUSIVE); int isDelete = (flags & SQLITE_OPEN_DELETEONCLOSE); int isCreate = (flags & SQLITE_OPEN_CREATE); int isReadonly = (flags & SQLITE_OPEN_READONLY); int isReadWrite = (flags & SQLITE_OPEN_READWRITE); ................................................................................ } } #ifdef FD_CLOEXEC fcntl(fd, F_SETFD, fcntl(fd, F_GETFD, 0) | FD_CLOEXEC); #endif return fillInUnixFile(pVfs, fd, dirfd, pFile, zPath); } /* ** Delete the file at zPath. If the dirSync argument is true, fsync() ** the directory after deleting the file. */ static int unixDelete(sqlite3_vfs *pVfs, const char *zPath, int dirSync){ ................................................................................ ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ****************************************************************************** ** ** This file contains code that is specific to windows. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #if SQLITE_OS_WIN /* This file is used for windows only */ /* ** A Note About Memory Allocation: ** ................................................................................ ** This file contains macros and a little bit of code that is common to ** all of the platform-specific files (os_*.c) and is #included into those ** files. ** ** This file should be #included by the os_*.c files only. It is not a ** general purpose header file. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef _OS_COMMON_H_ #define _OS_COMMON_H_ /* ** At least two bugs have slipped in because we changed the MEMORY_DEBUG ** macro to SQLITE_DEBUG and some older makefiles have not yet made the ................................................................................ ** May you share freely, never taking more than you give. ** ****************************************************************************** ** ** This file contains inline asm code for retrieving "high-performance" ** counters for x86 class CPUs. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef _HWTIME_H_ #define _HWTIME_H_ /* ** The following routine only works on pentium-class (or newer) processors. ** It uses the RDTSC opcode to read the cycle count value out of the ................................................................................ __inline__ sqlite_uint64 sqlite3Hwtime(void){ unsigned long val; __asm__ __volatile__ ("rdtsc" : "=A" (val)); return val; } #else #error Need implementation of sqlite3Hwtime() for your platform. /* ** To compile without implementing sqlite3Hwtime() for your platform, ** you can remove the above #error and use the following ................................................................................ ** hold at pVfs->mxPathname characters. */ static int getTempname(int nBuf, char *zBuf){ static char zChars[] = "abcdefghijklmnopqrstuvwxyz" "ABCDEFGHIJKLMNOPQRSTUVWXYZ" "0123456789"; int i, j; char zTempPath[MAX_PATH+1]; if( sqlite3_temp_directory ){ sqlite3_snprintf(MAX_PATH-30, zTempPath, "%s", sqlite3_temp_directory); }else if( isNT() ){ char *zMulti; WCHAR zWidePath[MAX_PATH]; GetTempPathW(MAX_PATH-30, zWidePath); ................................................................................ for(i=0; i<20; i++, j++){ zBuf[j] = (char)zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ]; } zBuf[j] = 0; OSTRACE2("TEMP FILENAME: %s\n", zBuf); return SQLITE_OK; } /* ** Open a file. */ static int winOpen( sqlite3_vfs *pVfs, /* Not used */ ................................................................................ dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL ); }else{ #if SQLITE_OS_WINCE return SQLITE_NOMEM; #else h = CreateFileA((char*)zConverted, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL ); #endif } if( h==INVALID_HANDLE_VALUE ){ free(zConverted); if( flags & SQLITE_OPEN_READWRITE ){ return winOpen(0, zName, id, ((flags|SQLITE_OPEN_READONLY)&~SQLITE_OPEN_READWRITE), pOutFlags); }else{ ................................................................................ /* ** Delete the named file. ** ** Note that windows does not allow a file to be deleted if some other ** process has it open. Sometimes a virus scanner or indexing program ** will open a journal file shortly after it is created in order to do ** whatever does. While this other process is holding the ** file open, we will be unable to delete it. To work around this ** problem, we delay 100 milliseconds and try to delete again. Up ** to MX_DELETION_ATTEMPTs deletion attempts are run before giving ** up and returning an error. */ #define MX_DELETION_ATTEMPTS 5 static int winDelete( sqlite3_vfs *pVfs, /* Not used on win32 */ const char *zFilename, /* Name of file to delete */ int syncDir /* Not used on win32 */ ){ int cnt = 0; int rc; void *zConverted = convertUtf8Filename(zFilename); if( zConverted==0 ){ return SQLITE_NOMEM; } SimulateIOError(return SQLITE_IOERR_DELETE); if( isNT() ){ do{ DeleteFileW(zConverted); }while( (rc = GetFileAttributesW(zConverted))!=0xffffffff && cnt++ < MX_DELETION_ATTEMPTS && (Sleep(100), 1) ); }else{ #if SQLITE_OS_WINCE return SQLITE_NOMEM; #else do{ DeleteFileA(zConverted); }while( (rc = GetFileAttributesA(zConverted))!=0xffffffff && cnt++ < MX_DELETION_ATTEMPTS && (Sleep(100), 1) ); #endif } free(zConverted); OSTRACE2("DELETE \"%s\"\n", zFilename); return rc==0xffffffff ? SQLITE_OK : SQLITE_IOERR_DELETE; } /* ** Check the existance and status of a file. */ static int winAccess( sqlite3_vfs *pVfs, /* Not used on win32 */ ................................................................................ void *zConverted = convertUtf8Filename(zFilename); if( zConverted==0 ){ return SQLITE_NOMEM; } if( isNT() ){ attr = GetFileAttributesW((WCHAR*)zConverted); }else{ #if SQLITE_OS_WINCE return SQLITE_NOMEM; #else attr = GetFileAttributesA((char*)zConverted); #endif } free(zConverted); switch( flags ){ case SQLITE_ACCESS_READ: case SQLITE_ACCESS_EXISTS: rc = attr!=0xffffffff; break; case SQLITE_ACCESS_READWRITE: rc = (attr & FILE_ATTRIBUTE_READONLY)==0; break; default: assert(!"Invalid flags argument"); } ................................................................................ void *zConverted = convertUtf8Filename(zFilename); if( zConverted==0 ){ return 0; } if( isNT() ){ h = LoadLibraryW((WCHAR*)zConverted); }else{ #if SQLITE_OS_WINCE return 0; #else h = LoadLibraryA((char*)zConverted); #endif } free(zConverted); return (void*)h; } static void winDlError(sqlite3_vfs *pVfs, int nBuf, char *zBufOut){ #if SQLITE_OS_WINCE int error = GetLastError(); if( error>0x7FFFFFF ){ sqlite3_snprintf(nBuf, zBufOut, "OsError 0x%x", error); }else{ sqlite3_snprintf(nBuf, zBufOut, "OsError %d", error); } #else FormatMessageA( FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(), 0, zBufOut, nBuf-1, 0 ); #endif } void *winDlSym(sqlite3_vfs *pVfs, void *pHandle, const char *zSymbol){ #if SQLITE_OS_WINCE /* The GetProcAddressA() routine is only available on wince. */ return GetProcAddressA((HANDLE)pHandle, zSymbol); #else /* All other windows platforms expect GetProcAddress() to take ................................................................................ /* FILETIME structure is a 64-bit value representing the number of 100-nanosecond intervals since January 1, 1601 (= JD 2305813.5). */ double now; #if SQLITE_OS_WINCE SYSTEMTIME time; GetSystemTime(&time); SystemTimeToFileTime(&time,&ft); #else GetSystemTimeAsFileTime( &ft ); #endif now = ((double)ft.dwHighDateTime) * 4294967296.0; *prNow = (now + ft.dwLowDateTime)/864000000000.0 + 2305813.5; #ifdef SQLITE_TEST if( sqlite3_current_time ){ *prNow = sqlite3_current_time/86400.0 + 2440587.5; } #endif return 0; } static int winGetLastError(sqlite3_vfs *pVfs, int nBuf, char *zBuf){ return 0; } /* ** Initialize and deinitialize the operating system interface. */ SQLITE_API int sqlite3_os_init(void){ static sqlite3_vfs winVfs = { ................................................................................ ** Clear operations are exceedingly rare. There are usually between ** 5 and 500 set operations per Bitvec object, though the number of sets can ** sometimes grow into tens of thousands or larger. The size of the ** Bitvec object is the number of pages in the database file at the ** start of a transaction, and is thus usually less than a few thousand, ** but can be as large as 2 billion for a really big database. ** ** @(#) $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #define BITVEC_SZ 512 /* Round the union size down to the nearest pointer boundary, since that's how ** it will be aligned within the Bitvec struct. */ #define BITVEC_USIZE (((BITVEC_SZ-12)/sizeof(Bitvec*))*sizeof(Bitvec*)) #define BITVEC_NCHAR BITVEC_USIZE ................................................................................ ** The pager is used to access a database disk file. It implements ** atomic commit and rollback through the use of a journal file that ** is separate from the database file. The pager also implements file ** locking to prevent two processes from writing the same database ** file simultaneously, or one process from reading the database while ** another is writing. ** ** @(#) $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef SQLITE_OMIT_DISKIO /* ** Macros for troubleshooting. Normally turned off */ #if 0 ................................................................................ ** SQLITE_OK returned. */ static int readMasterJournal(sqlite3_file *pJrnl, char *zMaster, int nMaster){ int rc; u32 len; i64 szJ; u32 cksum; int i; unsigned char aMagic[8]; /* A buffer to hold the magic header */ zMaster[0] = '\0'; rc = sqlite3OsFileSize(pJrnl, &szJ); if( rc!=SQLITE_OK || szJ<16 ) return rc; ................................................................................ rc = sqlite3OsRead(pJrnl, zMaster, len, szJ-16-len); if( rc!=SQLITE_OK ){ return rc; } zMaster[len] = '\0'; /* See if the checksum matches the master journal name */ for(i=0; i<len; i++){ cksum -= zMaster[i]; } if( cksum ){ /* If the checksum doesn't add up, then one or more of the disk sectors ** containing the master journal filename is corrupted. This means ** definitely roll back, so just return SQLITE_OK and report a (nul) ** master-journal filename. */ ................................................................................ ** If an I/O or malloc() error occurs, the journal-file is not deleted ** and an error code is returned. */ static int pager_playback(Pager *pPager, int isHot){ sqlite3_vfs *pVfs = pPager->pVfs; i64 szJ; /* Size of the journal file in bytes */ u32 nRec; /* Number of Records in the journal */ u32 i; /* Loop counter */ Pgno mxPg = 0; /* Size of the original file in pages */ int rc; /* Result code of a subroutine */ int res = 1; /* Value returned by sqlite3OsAccess() */ char *zMaster = 0; /* Name of master journal file if any */ /* Figure out how many records are in the journal. Abort early if ** the journal is empty. ................................................................................ if( rc!=SQLITE_OK ){ goto end_playback; } } /* Copy original pages out of the journal and back into the database file. */ for(i=0; i<nRec; i++){ rc = pager_playback_one_page(pPager, pPager->jfd, pPager->journalOff, 1); if( rc!=SQLITE_OK ){ if( rc==SQLITE_DONE ){ rc = SQLITE_OK; pPager->journalOff = szJ; break; }else{ ................................................................................ ** journal file that has been deleted, and hence not be hot. Or ** the header of the journal might be zeroed out. This routine ** does not discover these cases of a non-hot journal - if the ** journal file exists and is not empty this routine assumes it ** is hot. The pager_playback() routine will discover that the ** journal file is not really hot and will no-op. */ static int hasHotJournal(Pager *pPager){ sqlite3_vfs *pVfs = pPager->pVfs; int res = 0; if( pPager->useJournal && pPager->fd->pMethods ){ int rc; int exists; int locked; rc = sqlite3OsAccess(pVfs, pPager->zJournal, SQLITE_ACCESS_EXISTS, &exists); if( rc==SQLITE_OK && exists ){ rc = sqlite3OsCheckReservedLock(pPager->fd, &locked); } if( rc==SQLITE_OK && exists && !locked ){ int nPage; rc = sqlite3PagerPagecount(pPager, &nPage); if( rc==SQLITE_OK && nPage==0 ){ sqlite3OsDelete(pVfs, pPager->zJournal, 0); exists = 0; } } res = (rc!=SQLITE_OK ? -1 : (exists && !locked)); } return res; } /* ** Try to find a page in the cache that can be recycled. ** ** This routine may return SQLITE_IOERR, SQLITE_FULL or SQLITE_OK. It ** does not set the pPager->errCode variable. ................................................................................ ** ** Immediately after obtaining the shared lock (if required), this function ** checks for a hot-journal file. If one is found, an emergency rollback ** is performed immediately. */ static int pagerSharedLock(Pager *pPager){ int rc = SQLITE_OK; int isHot = 0; /* If this database is opened for exclusive access, has no outstanding ** page references and is in an error-state, now is the chance to clear ** the error. Discard the contents of the pager-cache and treat any ** open journal file as a hot-journal. */ if( !MEMDB && pPager->exclusiveMode && pPager->nRef==0 && pPager->errCode ){ if( pPager->journalOpen ){ isHot = 1; } pPager->errCode = SQLITE_OK; pager_reset(pPager); } /* If the pager is still in an error state, do not proceed. The error ** state will be cleared at some point in the future when all page ** references are dropped and the cache can be discarded. */ if( pPager->errCode && pPager->errCode!=SQLITE_FULL ){ return pPager->errCode; } if( pPager->state==PAGER_UNLOCK || isHot ){ sqlite3_vfs *pVfs = pPager->pVfs; if( !MEMDB ){ assert( pPager->nRef==0 ); if( !pPager->noReadlock ){ rc = pager_wait_on_lock(pPager, SHARED_LOCK); if( rc!=SQLITE_OK ){ assert( pPager->state==PAGER_UNLOCK ); return pager_error(pPager, rc); } assert( pPager->state>=SHARED_LOCK ); } /* If a journal file exists, and there is no RESERVED lock on the ** database file, then it either needs to be played back or deleted. */ rc = hasHotJournal(pPager); if( rc<0 ){ rc = SQLITE_IOERR_NOMEM; goto failed; } if( rc==1 || isHot ){ /* Get an EXCLUSIVE lock on the database file. At this point it is ** important that a RESERVED lock is not obtained on the way to the ** EXCLUSIVE lock. If it were, another process might open the ** database file, detect the RESERVED lock, and conclude that the ** database is safe to read while this process is still rolling it ** back. ** ................................................................................ /* Open the journal for read/write access. This is because in ** exclusive-access mode the file descriptor will be kept open and ** possibly used for a transaction later on. On some systems, the ** OsTruncate() call used in exclusive-access mode also requires ** a read/write file handle. */ if( !isHot && pPager->journalOpen==0 ){ int res; rc = sqlite3OsAccess(pVfs,pPager->zJournal,SQLITE_ACCESS_EXISTS,&res); if( rc==SQLITE_OK ){ if( res ){ int fout = 0; int f = SQLITE_OPEN_READWRITE|SQLITE_OPEN_MAIN_JOURNAL; assert( !pPager->tempFile ); ................................................................................ ** stored at byte 24 of the pager file. */ static int pager_incr_changecounter(Pager *pPager, int isDirect){ PgHdr *pPgHdr; u32 change_counter; int rc = SQLITE_OK; if( !pPager->changeCountDone ){ /* Open page 1 of the file for writing. */ rc = sqlite3PagerGet(pPager, 1, &pPgHdr); if( rc!=SQLITE_OK ) return rc; if( !isDirect ){ rc = sqlite3PagerWrite(pPgHdr); ................................................................................ } /* Increment the value just read and write it back to byte 24. */ change_counter = sqlite3Get4byte((u8*)pPager->dbFileVers); change_counter++; put32bits(((char*)PGHDR_TO_DATA(pPgHdr))+24, change_counter); if( isDirect && pPager->fd->pMethods ){ const void *zBuf = PGHDR_TO_DATA(pPgHdr); rc = sqlite3OsWrite(pPager->fd, zBuf, pPager->pageSize, 0); } /* Release the page reference. */ sqlite3PagerUnref(pPgHdr); pPager->changeCountDone = 1; } return rc; } ................................................................................ ** meta-data associated with pPg (i.e. data stored in the nExtra bytes ** allocated along with the page) is the responsibility of the caller. ** ** A transaction must be active when this routine is called. It used to be ** required that a statement transaction was not active, but this restriction ** has been removed (CREATE INDEX needs to move a page when a statement ** transaction is active). */ SQLITE_PRIVATE int sqlite3PagerMovepage(Pager *pPager, DbPage *pPg, Pgno pgno){ PgHdr *pPgOld; /* The page being overwritten. */ int h; Pgno needSyncPgno = 0; pagerEnter(pPager); assert( pPg->nRef>0 ); PAGERTRACE5("MOVE %d page %d (needSync=%d) moves to %d\n", PAGERID(pPager), pPg->pgno, pPg->needSync, pgno); IOTRACE(("MOVE %p %d %d\n", pPager, pPg->pgno, pgno)) pager_get_content(pPg); if( pPg->needSync ){ needSyncPgno = pPg->pgno; assert( pPg->inJournal || (int)pgno>pPager->origDbSize ); assert( pPg->dirty ); assert( pPager->needSync ); } /* Unlink pPg from its hash-chain */ ................................................................................ pPager->dirtyCache = 1; pPager->dbModified = 1; if( needSyncPgno ){ /* If needSyncPgno is non-zero, then the journal file needs to be ** sync()ed before any data is written to database file page needSyncPgno. ** Currently, no such page exists in the page-cache and the ** Pager.pInJournal bit has been set. This needs to be remedied by loading ** the page into the pager-cache and setting the PgHdr.needSync flag. ** ** If the attempt to load the page into the page-cache fails, (due ** to a malloc() or IO failure), clear the bit in the pInJournal[] ** array. Otherwise, if the page is loaded and written again in ** this transaction, it may be written to the database file before ** it is synced into the journal file. This way, it may end up in ** the journal file twice, but that is not a problem. ................................................................................ ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ ** ** This file contains code used to implement mutexes on Btree objects. ** This code really belongs in btree.c. But btree.c is getting too ** big and we want to break it down some. This packaged seemed like ** a good breakout. */ /************** Include btreeInt.h in the middle of btmutex.c ****************/ ................................................................................ ** a legal notice, here is a blessing: ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ ** ** This file implements a external (disk-based) database using BTrees. ** For a detailed discussion of BTrees, refer to ** ** Donald E. Knuth, THE ART OF COMPUTER PROGRAMMING, Volume 3: ** "Sorting And Searching", pages 473-480. Addison-Wesley ** Publishing Company, Reading, Massachusetts. ................................................................................ */ struct MemPage { u8 isInit; /* True if previously initialized. MUST BE FIRST! */ u8 idxShift; /* True if Cell indices have changed */ u8 nOverflow; /* Number of overflow cell bodies in aCell[] */ u8 intKey; /* True if intkey flag is set */ u8 leaf; /* True if leaf flag is set */ u8 zeroData; /* True if table stores keys only */ u8 leafData; /* True if tables stores data on leaves only */ u8 hasData; /* True if this page stores data */ u8 hdrOffset; /* 100 for page 1. 0 otherwise */ u8 childPtrSize; /* 0 if leaf==1. 4 if leaf==0 */ u16 maxLocal; /* Copy of BtShared.maxLocal or BtShared.maxLeaf */ u16 minLocal; /* Copy of BtShared.minLocal or BtShared.minLeaf */ u16 cellOffset; /* Index in aData of first cell pointer */ u16 idxParent; /* Index in parent of this node */ u16 nFree; /* Number of free bytes on the page */ u16 nCell; /* Number of cells on this page, local and ovfl */ struct _OvflCell { /* Cells that will not fit on aData[] */ u8 *pCell; /* Pointers to the body of the overflow cell */ u16 idx; /* Insert this cell before idx-th non-overflow cell */ } aOvfl[5]; BtShared *pBt; /* Pointer to BtShared that this page is part of */ u8 *aData; /* Pointer to disk image of the page data */ DbPage *pDbPage; /* Pager page handle */ ................................................................................ ** ** If the pgno argument passed to PTRMAP_PAGENO is a pointer-map page, ** then pgno is returned. So (pgno==PTRMAP_PAGENO(pgsz, pgno)) can be ** used to test if pgno is a pointer-map page. PTRMAP_ISPAGE implements ** this test. */ #define PTRMAP_PAGENO(pBt, pgno) ptrmapPageno(pBt, pgno) #define PTRMAP_PTROFFSET(pBt, pgno) (5*(pgno-ptrmapPageno(pBt, pgno)-1)) #define PTRMAP_ISPAGE(pBt, pgno) (PTRMAP_PAGENO((pBt),(pgno))==(pgno)) /* ** The pointer map is a lookup table that identifies the parent page for ** each child page in the database file. The parent page is the page that ** contains a pointer to the child. Every page in the database contains ** 0 or 1 parent pages. (In this context 'database page' refers ................................................................................ struct IntegrityCk { BtShared *pBt; /* The tree being checked out */ Pager *pPager; /* The associated pager. Also accessible by pBt->pPager */ int nPage; /* Number of pages in the database */ int *anRef; /* Number of times each page is referenced */ int mxErr; /* Stop accumulating errors when this reaches zero */ int nErr; /* Number of messages written to zErrMsg so far */ StrAccum errMsg; /* Accumulate the error message text here */ }; /* ** Read or write a two- and four-byte big-endian integer values. */ #define get2byte(x) ((x)[0]<<8 | (x)[1]) ................................................................................ ** a legal notice, here is a blessing: ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ ** ** This file implements a external (disk-based) database using BTrees. ** See the header comment on "btreeInt.h" for additional information. ** Including a description of file format and an overview of operation. */ /* ................................................................................ return SQLITE_CORRUPT_BKPT; } iPtrmap = PTRMAP_PAGENO(pBt, key); rc = sqlite3PagerGet(pBt->pPager, iPtrmap, &pDbPage); if( rc!=SQLITE_OK ){ return rc; } offset = PTRMAP_PTROFFSET(pBt, key); pPtrmap = (u8 *)sqlite3PagerGetData(pDbPage); if( eType!=pPtrmap[offset] || get4byte(&pPtrmap[offset+1])!=parent ){ TRACE(("PTRMAP_UPDATE: %d->(%d,%d)\n", key, eType, parent)); rc = sqlite3PagerWrite(pDbPage); if( rc==SQLITE_OK ){ pPtrmap[offset] = eType; ................................................................................ iPtrmap = PTRMAP_PAGENO(pBt, key); rc = sqlite3PagerGet(pBt->pPager, iPtrmap, &pDbPage); if( rc!=0 ){ return rc; } pPtrmap = (u8 *)sqlite3PagerGetData(pDbPage); offset = PTRMAP_PTROFFSET(pBt, key); assert( pEType!=0 ); *pEType = pPtrmap[offset]; if( pPgno ) *pPgno = get4byte(&pPtrmap[offset+1]); sqlite3PagerUnref(pDbPage); if( *pEType<1 || *pEType>5 ) return SQLITE_CORRUPT_BKPT; return SQLITE_OK; } #endif /* SQLITE_OMIT_AUTOVACUUM */ /* ** Given a btree page and a cell index (0 means the first cell on ** the page, 1 means the second cell, and so forth) return a pointer ** to the cell content. ** ** This routine works only for pages that do not contain overflow cells. */ #define findCell(pPage, iCell) \ ((pPage)->aData + get2byte(&(pPage)->aData[(pPage)->cellOffset+2*(iCell)])) /* ** This a more complex version of findCell() that works for ** pages that do contain overflow cells. See insert */ static u8 *findOverflowCell(MemPage *pPage, int iCell){ int i; ................................................................................ assert( sqlite3_mutex_held(pPage->pBt->mutex) ); pInfo->pCell = pCell; assert( pPage->leaf==0 || pPage->leaf==1 ); n = pPage->childPtrSize; assert( n==4-4*pPage->leaf ); if( pPage->hasData ){ n += getVarint32(&pCell[n], nPayload); }else{ nPayload = 0; } pInfo->nData = nPayload; if( pPage->intKey ){ n += getVarint(&pCell[n], (u64 *)&pInfo->nKey); }else{ u32 x; n += getVarint32(&pCell[n], x); pInfo->nKey = x; nPayload += x; } pInfo->nPayload = nPayload; pInfo->nHeader = n; if( nPayload<=pPage->maxLocal ){ /* This is the (easy) common case where the entire payload fits ** on the local page. No overflow is required. */ int nSize; /* Total size of cell content in bytes */ pInfo->nLocal = nPayload; pInfo->iOverflow = 0; nSize = nPayload + n; if( nSize<4 ){ nSize = 4; /* Minimum cell size is 4 */ } pInfo->nSize = nSize; }else{ /* If the payload will not fit completely on the local page, we have ** to decide how much to store locally and how much to spill onto ** overflow pages. The strategy is to minimize the amount of unused ................................................................................ put2byte(&data[hdr+5], top + get2byte(&data[pbegin+2])); } } /* ** Decode the flags byte (the first byte of the header) for a page ** and initialize fields of the MemPage structure accordingly. */ static void decodeFlags(MemPage *pPage, int flagByte){ BtShared *pBt; /* A copy of pPage->pBt */ assert( pPage->hdrOffset==(pPage->pgno==1 ? 100 : 0) ); assert( sqlite3_mutex_held(pPage->pBt->mutex) ); pPage->intKey = (flagByte & (PTF_INTKEY|PTF_LEAFDATA))!=0; pPage->zeroData = (flagByte & PTF_ZERODATA)!=0; pPage->leaf = (flagByte & PTF_LEAF)!=0; pPage->childPtrSize = 4*(pPage->leaf==0); pBt = pPage->pBt; if( flagByte & PTF_LEAFDATA ){ pPage->leafData = 1; pPage->maxLocal = pBt->maxLeaf; pPage->minLocal = pBt->minLeaf; }else{ pPage->leafData = 0; pPage->maxLocal = pBt->maxLocal; pPage->minLocal = pBt->minLocal; } pPage->hasData = !(pPage->zeroData || (!pPage->leaf && pPage->leafData)); } /* ** Initialize the auxiliary information for a disk block. ** ** The pParent parameter must be a pointer to the MemPage which ** is the parent of the page being initialized. The root of a ................................................................................ int hdr; /* Offset to beginning of page header */ u8 *data; /* Equal to pPage->aData */ BtShared *pBt; /* The main btree structure */ int usableSize; /* Amount of usable space on each page */ int cellOffset; /* Offset from start of page to first cell pointer */ int nFree; /* Number of unused bytes on the page */ int top; /* First byte of the cell content area */ u8 *pOff; /* Iterator used to check all cell offsets are in range */ u8 *pEnd; /* Pointer to end of cell offset array */ u8 mask; /* Mask of bits that must be zero in MSB of cell offsets */ pBt = pPage->pBt; assert( pBt!=0 ); assert( pParent==0 || pParent->pBt==pBt ); assert( sqlite3_mutex_held(pBt->mutex) ); assert( pPage->pgno==sqlite3PagerPagenumber(pPage->pDbPage) ); assert( pPage == sqlite3PagerGetExtra(pPage->pDbPage) ); ................................................................................ if( pPage->isInit ) return SQLITE_OK; if( pPage->pParent==0 && pParent!=0 ){ pPage->pParent = pParent; sqlite3PagerRef(pParent->pDbPage); } hdr = pPage->hdrOffset; data = pPage->aData; decodeFlags(pPage, data[hdr]); pPage->nOverflow = 0; pPage->idxShift = 0; usableSize = pBt->usableSize; pPage->cellOffset = cellOffset = hdr + 12 - 4*pPage->leaf; top = get2byte(&data[hdr+5]); pPage->nCell = get2byte(&data[hdr+3]); if( pPage->nCell>MX_CELL(pBt) ){ ................................................................................ } pPage->nFree = nFree; if( nFree>=usableSize ){ /* Free space cannot exceed total page size */ return SQLITE_CORRUPT_BKPT; } /* Check that all the offsets in the cell offset array are within range. */ mask = ~(((u8)(pBt->pageSize>>8))-1); pEnd = &data[cellOffset + pPage->nCell*2]; for(pOff=&data[cellOffset]; pOff!=pEnd && !((*pOff)&mask); pOff+=2); if( pOff!=pEnd ){ return SQLITE_CORRUPT_BKPT; } pPage->isInit = 1; return SQLITE_OK; } /* ** Set up a raw page so that it looks like a database page holding ................................................................................ int first; assert( sqlite3PagerPagenumber(pPage->pDbPage)==pPage->pgno ); assert( sqlite3PagerGetExtra(pPage->pDbPage) == (void*)pPage ); assert( sqlite3PagerGetData(pPage->pDbPage) == data ); assert( sqlite3PagerIswriteable(pPage->pDbPage) ); assert( sqlite3_mutex_held(pBt->mutex) ); memset(&data[hdr], 0, pBt->usableSize - hdr); data[hdr] = flags; first = hdr + 8 + 4*((flags&PTF_LEAF)==0); memset(&data[hdr+1], 0, 4); data[hdr+7] = 0; put2byte(&data[hdr+5], pBt->usableSize); pPage->nFree = pBt->usableSize - first; decodeFlags(pPage, flags); pPage->hdrOffset = hdr; pPage->cellOffset = first; pPage->nOverflow = 0; pPage->idxShift = 0; pPage->nCell = 0; pPage->isInit = 1; } /* ** Get a page from the pager. Initialize the MemPage.pBt and ................................................................................ trans_begun: btreeIntegrity(p); sqlite3BtreeLeave(p); return rc; } #ifndef SQLITE_OMIT_AUTOVACUUM /* ** Set the pointer-map entries for all children of page pPage. Also, if ** pPage contains cells that point to overflow pages, set the pointer ** map entries for the overflow pages as well. ................................................................................ ** database. The pDbPage reference remains valid. */ static int relocatePage( BtShared *pBt, /* Btree */ MemPage *pDbPage, /* Open page to move */ u8 eType, /* Pointer map 'type' entry for pDbPage */ Pgno iPtrPage, /* Pointer map 'page-no' entry for pDbPage */ Pgno iFreePage /* The location to move pDbPage to */ ){ MemPage *pPtrPage; /* The page that contains a pointer to pDbPage */ Pgno iDbPage = pDbPage->pgno; Pager *pPager = pBt->pPager; int rc; assert( eType==PTRMAP_OVERFLOW2 || eType==PTRMAP_OVERFLOW1 || ................................................................................ eType==PTRMAP_BTREE || eType==PTRMAP_ROOTPAGE ); assert( sqlite3_mutex_held(pBt->mutex) ); assert( pDbPage->pBt==pBt ); /* Move page iDbPage from its current location to page number iFreePage */ TRACE(("AUTOVACUUM: Moving %d to free page %d (ptr page %d type %d)\n", iDbPage, iFreePage, iPtrPage, eType)); rc = sqlite3PagerMovepage(pPager, pDbPage->pDbPage, iFreePage); if( rc!=SQLITE_OK ){ return rc; } pDbPage->pgno = iFreePage; /* If pDbPage was a btree-page, then it may have child pages and/or cells ** that point to overflow pages. The pointer map entries for all these ................................................................................ if( rc==SQLITE_OK ){ rc = ptrmapPut(pBt, iFreePage, eType, iPtrPage); } } return rc; } static int pagerPagecount(Pager *pPager){ int rc; int nPage; rc = sqlite3PagerPagecount(pPager, &nPage); return (rc==SQLITE_OK?nPage:-1); } /* Forward declaration required by incrVacuumStep(). */ static int allocateBtreePage(BtShared *, MemPage **, Pgno *, Pgno, u8); /* ** Perform a single step of an incremental-vacuum. If successful, ** return SQLITE_OK. If there is no work to do (and therefore no ** point in calling this function again), return SQLITE_DONE. ................................................................................ } releasePage(pFreePg); }while( nFin!=0 && iFreePg>nFin ); assert( iFreePg<iLastPg ); rc = sqlite3PagerWrite(pLastPg->pDbPage); if( rc==SQLITE_OK ){ rc = relocatePage(pBt, pLastPg, eType, iPtrPage, iFreePg); } releasePage(pLastPg); if( rc!=SQLITE_OK ){ return rc; } } } ................................................................................ c = sqlite3VdbeRecordCompare(nCellKey, pCellKey, pUnKey); sqlite3_free(pCellKey); if( rc ) goto moveto_finish; } } if( c==0 ){ pCur->info.nKey = nCellKey; if( pPage->leafData && !pPage->leaf ){ lwr = pCur->idx; upr = lwr - 1; break; }else{ if( pRes ) *pRes = 0; rc = SQLITE_OK; goto moveto_finish; ................................................................................ pCur->eState = CURSOR_INVALID; return SQLITE_OK; } sqlite3BtreeMoveToParent(pCur); pPage = pCur->pPage; }while( pCur->idx>=pPage->nCell ); *pRes = 0; if( pPage->leafData ){ rc = sqlite3BtreeNext(pCur, pRes); }else{ rc = SQLITE_OK; } return rc; } *pRes = 0; ................................................................................ } sqlite3BtreeMoveToParent(pCur); pPage = pCur->pPage; } pCur->idx--; pCur->info.nSize = 0; pCur->validNKey = 0; if( pPage->leafData && !pPage->leaf ){ rc = sqlite3BtreePrevious(pCur, pRes); }else{ rc = SQLITE_OK; } } *pRes = 0; return rc; ................................................................................ ** always fully overwrite deleted information with zeros. */ rc = sqlite3PagerWrite(pPage->pDbPage); if( rc ) return rc; memset(pPage->aData, 0, pPage->pBt->pageSize); #endif #ifndef SQLITE_OMIT_AUTOVACUUM /* If the database supports auto-vacuum, write an entry in the pointer-map ** to indicate that the page is free. */ if( pBt->autoVacuum ){ rc = ptrmapPut(pBt, pPage->pgno, PTRMAP_FREEPAGE, 0); if( rc ) return rc; } #endif if( n==0 ){ /* This is the first free page */ rc = sqlite3PagerWrite(pPage->pDbPage); if( rc ) return rc; memset(pPage->aData, 0, 8); put4byte(&pPage1->aData[32], pPage->pgno); ................................................................................ nSrc = nData; pSrc = pData; } } releasePage(pToRelease); return SQLITE_OK; } /* ** Change the MemPage.pParent pointer on the page whose number is ** given in the second argument so that MemPage.pParent holds the ** pointer in the third argument. */ static int reparentPage(BtShared *pBt, Pgno pgno, MemPage *pNewParent, int idx){ MemPage *pThis; DbPage *pDbPage; assert( sqlite3_mutex_held(pBt->mutex) ); assert( pNewParent!=0 ); if( pgno==0 ) return SQLITE_OK; assert( pBt->pPager!=0 ); ................................................................................ sqlite3PagerRef(pNewParent->pDbPage); } pThis->idxParent = idx; } sqlite3PagerUnref(pDbPage); } #ifndef SQLITE_OMIT_AUTOVACUUM if( pBt->autoVacuum ){ return ptrmapPut(pBt, pgno, PTRMAP_BTREE, pNewParent->pgno); } #endif return SQLITE_OK; } /* ** Change the pParent pointer of all children of pPage to point back ................................................................................ ** to pPage. ** ** In other words, for every child of pPage, invoke reparentPage() ** to make sure that each child knows that pPage is its parent. ** ** This routine gets called after you memcpy() one page into ** another. */ static int reparentChildPages(MemPage *pPage){ int i; BtShared *pBt = pPage->pBt; int rc = SQLITE_OK; assert( sqlite3_mutex_held(pPage->pBt->mutex) ); if( pPage->leaf ) return SQLITE_OK; for(i=0; i<pPage->nCell; i++){ u8 *pCell = findCell(pPage, i); rc = reparentPage(pBt, get4byte(pCell), pPage, i); if( rc!=SQLITE_OK ) return rc; } rc = reparentPage(pBt, get4byte(&pPage->aData[pPage->hdrOffset+8]), pPage, i); pPage->idxShift = 0; return rc; } /* ** Remove the i-th cell from pPage. This routine effects pPage only. ** The cell content is not freed or deallocated. It is assumed that ** the cell content has been copied someplace else. This routine just ................................................................................ fillInCell(pParent, parentCell, 0, info.nKey, 0, 0, 0, &parentSize); assert( parentSize<64 ); assert( sqlite3PagerIswriteable(pParent->pDbPage) ); insertCell(pParent, parentIdx, parentCell, parentSize, 0, 4); put4byte(findOverflowCell(pParent,parentIdx), pPage->pgno); put4byte(&pParent->aData[pParent->hdrOffset+8], pgnoNew); #ifndef SQLITE_OMIT_AUTOVACUUM /* If this is an auto-vacuum database, update the pointer map ** with entries for the new page, and any pointer from the ** cell on the page to an overflow page. */ if( pBt->autoVacuum ){ rc = ptrmapPut(pBt, pgnoNew, PTRMAP_BTREE, pParent->pgno); if( rc==SQLITE_OK ){ rc = ptrmapPutOvfl(pNew, 0); } if( rc!=SQLITE_OK ){ releasePage(pNew); return rc; } } #endif /* Release the reference to the new page and balance the parent page, ** in case the divider cell inserted caused it to become overfull. */ releasePage(pNew); return balance(pParent, 0); } ................................................................................ int cntNew[NB+2]; /* Index in aCell[] of cell after i-th page */ int szNew[NB+2]; /* Combined size of cells place on i-th page */ u8 **apCell = 0; /* All cells begin balanced */ u16 *szCell; /* Local size of all cells in apCell[] */ u8 *aCopy[NB]; /* Space for holding data of apCopy[] */ u8 *aSpace1; /* Space for copies of dividers cells before balance */ u8 *aSpace2 = 0; /* Space for overflow dividers cells after balance */ #ifndef SQLITE_OMIT_AUTOVACUUM u8 *aFrom = 0; #endif assert( sqlite3_mutex_held(pPage->pBt->mutex) ); /* ** Find the parent page. */ assert( pPage->isInit ); ................................................................................ ** and the new entry is the right-most entry in the tree (it has the ** largest key) then use the special balance_quick() routine for ** balancing. balance_quick() is much faster and results in a tighter ** packing of data in the common case. */ if( pPage->leaf && pPage->intKey && pPage->leafData && pPage->nOverflow==1 && pPage->aOvfl[0].idx==pPage->nCell && pPage->pParent->pgno!=1 && get4byte(&pParent->aData[pParent->hdrOffset+8])==pPage->pgno ){ /* ** TODO: Check the siblings to the left of pPage. It may be that ** they are not full and no new page is required. */ return balance_quick(pPage, pParent); } #endif ................................................................................ assert( ((aCopy[0] - (u8*)apCell) & 7)==0 ); /* 8-byte alignment required */ for(i=1; i<NB; i++){ aCopy[i] = &aCopy[i-1][pBt->pageSize+ROUND8(sizeof(MemPage))]; assert( ((aCopy[i] - (u8*)apCell) & 7)==0 ); /* 8-byte alignment required */ } aSpace1 = &aCopy[NB-1][pBt->pageSize+ROUND8(sizeof(MemPage))]; assert( ((aSpace1 - (u8*)apCell) & 7)==0 ); /* 8-byte alignment required */ #ifndef SQLITE_OMIT_AUTOVACUUM if( pBt->autoVacuum ){ aFrom = &aSpace1[pBt->pageSize]; } #endif aSpace2 = sqlite3PageMalloc(pBt->pageSize); if( aSpace2==0 ){ rc = SQLITE_NOMEM; goto balance_cleanup; } /* ................................................................................ ** are alike. ** ** leafCorrection: 4 if pPage is a leaf. 0 if pPage is not a leaf. ** leafData: 1 if pPage holds key+data and pParent holds only keys. */ nCell = 0; leafCorrection = pPage->leaf*4; leafData = pPage->leafData && pPage->leaf; for(i=0; i<nOld; i++){ MemPage *pOld = apCopy[i]; int limit = pOld->nCell+pOld->nOverflow; for(j=0; j<limit; j++){ assert( nCell<nMaxCells ); apCell[nCell] = findOverflowCell(pOld, j); szCell[nCell] = cellSizePtr(pOld, apCell[nCell]); #ifndef SQLITE_OMIT_AUTOVACUUM if( pBt->autoVacuum ){ int a; aFrom[nCell] = i; for(a=0; a<pOld->nOverflow; a++){ if( pOld->aOvfl[a].pCell==apCell[nCell] ){ aFrom[nCell] = 0xFF; break; } } } #endif nCell++; } if( i<nOld-1 ){ u16 sz = cellSizePtr(pParent, apDiv[i]); if( leafData ){ /* With the LEAFDATA flag, pParent cells hold only INTKEYs that ** are duplicates of keys on the child pages. We need to remove ................................................................................ szCell[nCell] = sz; pTemp = &aSpace1[iSpace1]; iSpace1 += sz; assert( sz<=pBt->pageSize/4 ); assert( iSpace1<=pBt->pageSize ); memcpy(pTemp, apDiv[i], sz); apCell[nCell] = pTemp+leafCorrection; #ifndef SQLITE_OMIT_AUTOVACUUM if( pBt->autoVacuum ){ aFrom[nCell] = 0xFF; } #endif dropCell(pParent, nxDiv, sz); szCell[nCell] -= leafCorrection; assert( get4byte(pTemp)==pgnoOld[i] ); if( !pOld->leaf ){ assert( leafCorrection==0 ); /* The right pointer of the child page pOld becomes the left ** pointer of the divider cell */ ................................................................................ assert( j<nMaxCells ); assert( pNew->pgno==pgnoNew[i] ); zeroPage(pNew, pageFlags); assemblePage(pNew, cntNew[i]-j, &apCell[j], &szCell[j]); assert( pNew->nCell>0 || (nNew==1 && cntNew[0]==0) ); assert( pNew->nOverflow==0 ); #ifndef SQLITE_OMIT_AUTOVACUUM /* If this is an auto-vacuum database, update the pointer map entries ** that point to the siblings that were rearranged. These can be: left ** children of cells, the right-child of the page, or overflow pages ** pointed to by cells. */ if( pBt->autoVacuum ){ for(k=j; k<cntNew[i]; k++){ assert( k<nMaxCells ); if( aFrom[k]==0xFF || apCopy[aFrom[k]]->pgno!=pNew->pgno ){ rc = ptrmapPutOvfl(pNew, k-j); if( rc!=SQLITE_OK ){ goto balance_cleanup; } } } } #endif j = cntNew[i]; /* If the sibling page assembled above was not the right-most sibling, ** insert a divider cell into the parent page. */ if( i<nNew-1 && j<nCell ){ ................................................................................ assert( j<nMaxCells ); pCell = apCell[j]; sz = szCell[j] + leafCorrection; pTemp = &aSpace2[iSpace2]; if( !pNew->leaf ){ memcpy(&pNew->aData[8], pCell, 4); }else if( leafData ){ /* If the tree is a leaf-data tree, and the siblings are leaves, ** then there is no divider cell in apCell[]. Instead, the divider ** cell consists of the integer key for the right-most cell of ** the sibling-page assembled above only. */ CellInfo info; ................................................................................ } iSpace2 += sz; assert( sz<=pBt->pageSize/4 ); assert( iSpace2<=pBt->pageSize ); rc = insertCell(pParent, nxDiv, pCell, sz, pTemp, 4); if( rc!=SQLITE_OK ) goto balance_cleanup; put4byte(findOverflowCell(pParent,nxDiv), pNew->pgno); #ifndef SQLITE_OMIT_AUTOVACUUM /* If this is an auto-vacuum database, and not a leaf-data tree, ** then update the pointer map with an entry for the overflow page ** that the cell just inserted points to (if any). */ if( pBt->autoVacuum && !leafData ){ rc = ptrmapPutOvfl(pParent, nxDiv); if( rc!=SQLITE_OK ){ goto balance_cleanup; } } #endif j++; nxDiv++; } } assert( j==nCell ); assert( nOld>0 ); assert( nNew>0 ); if( (pageFlags & PTF_LEAF)==0 ){ memcpy(&apNew[nNew-1]->aData[8], &apCopy[nOld-1]->aData[8], 4); } if( nxDiv==pParent->nCell+pParent->nOverflow ){ /* Right-most sibling is the right-most child of pParent */ put4byte(&pParent->aData[pParent->hdrOffset+8], pgnoNew[nNew-1]); }else{ /* Right-most sibling is the left child of the first entry in pParent ** past the right-most divider entry */ ................................................................................ put4byte(findOverflowCell(pParent, nxDiv), pgnoNew[nNew-1]); } /* ** Reparent children of all cells. */ for(i=0; i<nNew; i++){ rc = reparentChildPages(apNew[i]); if( rc!=SQLITE_OK ) goto balance_cleanup; } rc = reparentChildPages(pParent); if( rc!=SQLITE_OK ) goto balance_cleanup; /* ** Balance the parent page. Note that the current page (pPage) might ** have been added to the freelist so it might no longer be initialized. ** But the parent page will always be initialized. */ ................................................................................ pPage->pParent = 0; rc = sqlite3BtreeInitPage(pPage, 0); assert( rc==SQLITE_OK ); freePage(pChild); TRACE(("BALANCE: transfer child %d into root %d\n", pChild->pgno, pPage->pgno)); } rc = reparentChildPages(pPage); assert( pPage->nOverflow==0 ); #ifndef SQLITE_OMIT_AUTOVACUUM if( pBt->autoVacuum ){ int i; for(i=0; i<pPage->nCell; i++){ rc = ptrmapPutOvfl(pPage, i); if( rc!=SQLITE_OK ){ goto end_shallow_balance; } } } #endif releasePage(pChild); } end_shallow_balance: sqlite3_free(apCell); return rc; } ................................................................................ if( pChild->nOverflow ){ pChild->nFree = 0; } assert( pChild->nCell==pPage->nCell ); zeroPage(pPage, pChild->aData[0] & ~PTF_LEAF); put4byte(&pPage->aData[pPage->hdrOffset+8], pgnoChild); TRACE(("BALANCE: copy root %d into %d\n", pPage->pgno, pChild->pgno)); #ifndef SQLITE_OMIT_AUTOVACUUM if( pBt->autoVacuum ){ int i; rc = ptrmapPut(pBt, pChild->pgno, PTRMAP_BTREE, pPage->pgno); if( rc ) goto balancedeeper_out; for(i=0; i<pChild->nCell; i++){ rc = ptrmapPutOvfl(pChild, i); if( rc!=SQLITE_OK ){ goto balancedeeper_out; } } } #endif rc = balance_nonroot(pChild); balancedeeper_out: releasePage(pChild); return rc; } /* ................................................................................ SQLITE_OK!=(rc = sqlite3BtreeMoveto(pCur, pKey, 0, nKey, appendBias, &loc)) ){ return rc; } pPage = pCur->pPage; assert( pPage->intKey || nKey>=0 ); assert( pPage->leaf || !pPage->leafData ); TRACE(("INSERT: table=%d nkey=%lld ndata=%d page=%d %s\n", pCur->pgnoRoot, nKey, nData, pPage->pgno, loc==0 ? "overwrite" : "new entry")); assert( pPage->isInit ); allocateTempSpace(pBt); newCell = pBt->pTmpSpace; if( newCell==0 ) return SQLITE_NOMEM; ................................................................................ ** next Cell after the one to be deleted is guaranteed to exist and ** to be a leaf so we can use it. */ BtCursor leafCur; unsigned char *pNext; int notUsed; unsigned char *tempCell = 0; assert( !pPage->leafData ); sqlite3BtreeGetTempCursor(pCur, &leafCur); rc = sqlite3BtreeNext(&leafCur, ¬Used); if( rc==SQLITE_OK ){ rc = sqlite3PagerWrite(leafCur.pPage->pDbPage); } if( rc==SQLITE_OK ){ u16 szNext; ................................................................................ assert( eType!=PTRMAP_ROOTPAGE ); assert( eType!=PTRMAP_FREEPAGE ); rc = sqlite3PagerWrite(pRoot->pDbPage); if( rc!=SQLITE_OK ){ releasePage(pRoot); return rc; } rc = relocatePage(pBt, pRoot, eType, iPtrPage, pgnoMove); releasePage(pRoot); /* Obtain the page at pgnoRoot */ if( rc!=SQLITE_OK ){ return rc; } rc = sqlite3BtreeGetPage(pBt, pgnoRoot, &pRoot, 0); ................................................................................ */ MemPage *pMove; releasePage(pPage); rc = sqlite3BtreeGetPage(pBt, maxRootPgno, &pMove, 0); if( rc!=SQLITE_OK ){ return rc; } rc = relocatePage(pBt, pMove, PTRMAP_ROOTPAGE, 0, iTable); releasePage(pMove); if( rc!=SQLITE_OK ){ return rc; } rc = sqlite3BtreeGetPage(pBt, maxRootPgno, &pMove, 0); if( rc!=SQLITE_OK ){ return rc; ................................................................................ sqlite3StrAccumAppend(&pCheck->errMsg, "\n", 1); } if( zMsg1 ){ sqlite3StrAccumAppend(&pCheck->errMsg, zMsg1, -1); } sqlite3VXPrintf(&pCheck->errMsg, 1, zFormat, ap); va_end(ap); } #endif /* SQLITE_OMIT_INTEGRITY_CHECK */ #ifndef SQLITE_OMIT_INTEGRITY_CHECK /* ** Add 1 to the reference count for page iPage. If this is the second ** reference to the page, add an error message to pCheck->zErrMsg. ................................................................................ } /* Check for complete coverage of the page */ data = pPage->aData; hdr = pPage->hdrOffset; hit = sqlite3PageMalloc( pBt->pageSize ); if( hit ){ memset(hit, 0, usableSize ); memset(hit, 1, get2byte(&data[hdr+5])); nCell = get2byte(&data[hdr+3]); cellStart = hdr + 12 - 4*pPage->leaf; for(i=0; i<nCell; i++){ int pc = get2byte(&data[cellStart+i*2]); u16 size = cellSizePtr(pPage, &data[pc]); ................................................................................ #ifndef SQLITE_OMIT_INTEGRITY_CHECK /* ** This routine does a complete check of the given BTree file. aRoot[] is ** an array of pages numbers were each page number is the root page of ** a table. nRoot is the number of entries in aRoot. ** ** If everything checks out, this routine returns NULL. If something is ** amiss, an error message is written into memory obtained from malloc() ** and a pointer to that error message is returned. The calling function ** is responsible for freeing the error message when it is done. */ SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck( Btree *p, /* The btree to be checked */ int *aRoot, /* An array of root pages numbers for individual trees */ int nRoot, /* Number of entries in aRoot[] */ int mxErr, /* Stop reporting errors after this many */ int *pnErr /* Write number of errors seen to this variable */ ................................................................................ BtShared *pBt = p->pBt; char zErr[100]; sqlite3BtreeEnter(p); pBt->db = p->db; nRef = sqlite3PagerRefcount(pBt->pPager); if( lockBtreeWithRetry(p)!=SQLITE_OK ){ sqlite3BtreeLeave(p); return sqlite3StrDup("Unable to acquire a read lock on the database"); } sCheck.pBt = pBt; sCheck.pPager = pBt->pPager; sCheck.nPage = pagerPagecount(sCheck.pPager); sCheck.mxErr = mxErr; sCheck.nErr = 0; *pnErr = 0; #ifndef SQLITE_OMIT_AUTOVACUUM if( pBt->nTrunc!=0 ){ sCheck.nPage = pBt->nTrunc; } #endif if( sCheck.nPage==0 ){ ................................................................................ return 0; } sCheck.anRef = sqlite3Malloc( (sCheck.nPage+1)*sizeof(sCheck.anRef[0]) ); if( !sCheck.anRef ){ unlockBtreeIfUnused(pBt); *pnErr = 1; sqlite3BtreeLeave(p); return sqlite3MPrintf(p->db, "Unable to malloc %d bytes", (sCheck.nPage+1)*sizeof(sCheck.anRef[0])); } for(i=0; i<=sCheck.nPage; i++){ sCheck.anRef[i] = 0; } i = PENDING_BYTE_PAGE(pBt); if( i<=sCheck.nPage ){ sCheck.anRef[i] = 1; } sqlite3StrAccumInit(&sCheck.errMsg, zErr, sizeof(zErr), 20000); ................................................................................ ); } /* Clean up and report errors. */ sqlite3BtreeLeave(p); sqlite3_free(sCheck.anRef); *pnErr = sCheck.nErr; if( sCheck.nErr==0 ) sqlite3StrAccumReset(&sCheck.errMsg); return sqlite3StrAccumFinish(&sCheck.errMsg); } #endif /* SQLITE_OMIT_INTEGRITY_CHECK */ /* ................................................................................ ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file implements a FIFO queue of rowids used for processing ** UPDATE and DELETE statements. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** Constants FIFOSIZE_FIRST and FIFOSIZE_MAX are the initial ** number of entries in a fifo page and the maximum number of ** entries in a fifo page. */ ................................................................................ # define FIFOSIZE_MAX (((262144-sizeof(FifoPage))/8)+1) #endif /* ** Allocate a new FifoPage and return a pointer to it. Return NULL if ** we run out of memory. Leave space on the page for nEntry entries. */ static FifoPage *allocateFifoPage(int nEntry){ FifoPage *pPage; if( nEntry>FIFOSIZE_MAX ){ nEntry = FIFOSIZE_MAX; } pPage = sqlite3Malloc( sizeof(FifoPage) + sizeof(i64)*(nEntry-1) ); if( pPage ){ pPage->nSlot = nEntry; pPage->iWrite = 0; pPage->iRead = 0; pPage->pNext = 0; } return pPage; } /* ** Initialize a Fifo structure. */ SQLITE_PRIVATE void sqlite3VdbeFifoInit(Fifo *pFifo){ memset(pFifo, 0, sizeof(*pFifo)); } /* ** Push a single 64-bit integer value into the Fifo. Return SQLITE_OK ** normally. SQLITE_NOMEM is returned if we are unable to allocate ** memory. */ SQLITE_PRIVATE int sqlite3VdbeFifoPush(Fifo *pFifo, i64 val){ FifoPage *pPage; pPage = pFifo->pLast; if( pPage==0 ){ pPage = pFifo->pLast = pFifo->pFirst = allocateFifoPage(FIFOSIZE_FIRST); if( pPage==0 ){ return SQLITE_NOMEM; } }else if( pPage->iWrite>=pPage->nSlot ){ pPage->pNext = allocateFifoPage(pFifo->nEntry); if( pPage->pNext==0 ){ return SQLITE_NOMEM; } pPage = pFifo->pLast = pPage->pNext; } pPage->aSlot[pPage->iWrite++] = val; pFifo->nEntry++; ................................................................................ assert( pPage->iWrite<=pPage->nSlot ); assert( pPage->iRead<pPage->nSlot ); assert( pPage->iRead>=0 ); *pVal = pPage->aSlot[pPage->iRead++]; pFifo->nEntry--; if( pPage->iRead>=pPage->iWrite ){ pFifo->pFirst = pPage->pNext; sqlite3_free(pPage); if( pFifo->nEntry==0 ){ assert( pFifo->pLast==pPage ); pFifo->pLast = 0; }else{ assert( pFifo->pFirst!=0 ); } }else{ ................................................................................ ** Delete all information from a Fifo object. Free all memory held ** by the Fifo. */ SQLITE_PRIVATE void sqlite3VdbeFifoClear(Fifo *pFifo){ FifoPage *pPage, *pNextPage; for(pPage=pFifo->pFirst; pPage; pPage=pNextPage){ pNextPage = pPage->pNext; sqlite3_free(pPage); } sqlite3VdbeFifoInit(pFifo); } /************** End of vdbefifo.c ********************************************/ /************** Begin file vdbemem.c *****************************************/ /* ** 2004 May 26 ** ................................................................................ ************************************************************************* ** ** This file contains code use to manipulate "Mem" structure. A "Mem" ** stores a single value in the VDBE. Mem is an opaque structure visible ** only within the VDBE. Interface routines refer to a Mem using the ** name sqlite_value ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** Call sqlite3VdbeMemExpandBlob() on the supplied value (type Mem*) ** P if required. */ #define expandBlob(P) (((P)->flags&MEM_Zero)?sqlite3VdbeMemExpandBlob(P):0) ................................................................................ ((pMem->zMalloc && pMem->zMalloc==pMem->z) ? 1 : 0) + (((pMem->flags&MEM_Dyn)&&pMem->xDel) ? 1 : 0) + ((pMem->flags&MEM_Ephem) ? 1 : 0) + ((pMem->flags&MEM_Static) ? 1 : 0) ); if( n<32 ) n = 32; if( sqlite3MallocSize(pMem->zMalloc)<n ){ if( preserve && pMem->z==pMem->zMalloc ){ pMem->z = pMem->zMalloc = sqlite3DbReallocOrFree(pMem->db, pMem->z, n); if( !pMem->z ){ pMem->flags = MEM_Null; } preserve = 0; }else{ sqlite3_free(pMem->zMalloc); pMem->zMalloc = sqlite3DbMallocRaw(pMem->db, n); } } if( preserve && pMem->z && pMem->zMalloc && pMem->z!=pMem->zMalloc ){ memcpy(pMem->zMalloc, pMem->z, pMem->n); } ................................................................................ pMem->z = pMem->zMalloc; pMem->flags &= ~(MEM_Ephem|MEM_Static); pMem->xDel = 0; return (pMem->z ? SQLITE_OK : SQLITE_NOMEM); } /* ** Make the given Mem object MEM_Dyn. ** ** Return SQLITE_OK on success or SQLITE_NOMEM if malloc fails. */ SQLITE_PRIVATE int sqlite3VdbeMemDynamicify(Mem *pMem){ int f; assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); expandBlob(pMem); f = pMem->flags; if( (f&(MEM_Str|MEM_Blob)) && pMem->z!=pMem->zMalloc ){ if( sqlite3VdbeMemGrow(pMem, pMem->n + 2, 1) ){ return SQLITE_NOMEM; ................................................................................ pMem->flags &= ~(MEM_Zero|MEM_Term); } return SQLITE_OK; } #endif /* ** Make the given Mem object either MEM_Short or MEM_Dyn so that bytes ** of the Mem.z[] array can be modified. ** ** Return SQLITE_OK on success or SQLITE_NOMEM if malloc fails. */ SQLITE_PRIVATE int sqlite3VdbeMemMakeWriteable(Mem *pMem){ return sqlite3VdbeMemDynamicify(pMem); } /* ** Make sure the given Mem is \u0000 terminated. */ SQLITE_PRIVATE int sqlite3VdbeMemNulTerminate(Mem *pMem){ assert( pMem->db==0 || sqlite3_mutex_held(pMem->db->mutex) ); if( (pMem->flags & MEM_Term)!=0 || (pMem->flags & MEM_Str)==0 ){ return SQLITE_OK; /* Nothing to do */ ................................................................................ ctx.s.db = pMem->db; ctx.s.zMalloc = 0; ctx.pMem = pMem; ctx.pFunc = pFunc; ctx.isError = 0; pFunc->xFinalize(&ctx); assert( 0==(pMem->flags&MEM_Dyn) && !pMem->xDel ); sqlite3_free(pMem->zMalloc); *pMem = ctx.s; rc = (ctx.isError?SQLITE_ERROR:SQLITE_OK); } return rc; } /* ................................................................................ /* ** Release any memory held by the Mem. This may leave the Mem in an ** inconsistent state, for example with (Mem.z==0) and ** (Mem.type==SQLITE_TEXT). */ SQLITE_PRIVATE void sqlite3VdbeMemRelease(Mem *p){ sqlite3VdbeMemReleaseExternal(p); sqlite3_free(p->zMalloc); p->z = 0; p->zMalloc = 0; p->xDel = 0; } /* ** Convert a 64-bit IEEE double into a 64-bit signed integer. ................................................................................ if( flags&MEM_Term ){ nAlloc += (enc==SQLITE_UTF8?1:2); } if( sqlite3VdbeMemGrow(pMem, nAlloc, 0) ){ return SQLITE_NOMEM; } memcpy(pMem->z, z, nAlloc); }else{ sqlite3VdbeMemRelease(pMem); pMem->z = (char *)z; pMem->xDel = xDel; flags |= ((xDel==SQLITE_STATIC)?MEM_Static:MEM_Dyn); } ................................................................................ if( !pExpr ){ *ppVal = 0; return SQLITE_OK; } op = pExpr->op; if( op==TK_STRING || op==TK_FLOAT || op==TK_INTEGER ){ zVal = sqlite3StrNDup((char*)pExpr->token.z, pExpr->token.n); pVal = sqlite3ValueNew(db); if( !zVal || !pVal ) goto no_mem; sqlite3Dequote(zVal); sqlite3ValueSetStr(pVal, -1, zVal, SQLITE_UTF8, sqlite3_free); if( (op==TK_INTEGER || op==TK_FLOAT ) && affinity==SQLITE_AFF_NONE ){ sqlite3ValueApplyAffinity(pVal, SQLITE_AFF_NUMERIC, enc); }else{ sqlite3ValueApplyAffinity(pVal, affinity, enc); } }else if( op==TK_UMINUS ) { if( SQLITE_OK==sqlite3ValueFromExpr(db,pExpr->pLeft,enc,affinity,&pVal) ){ ................................................................................ assert( pExpr->token.z[0]=='x' || pExpr->token.z[0]=='X' ); assert( pExpr->token.z[1]=='\'' ); assert( pExpr->token.z[pExpr->token.n-1]=='\'' ); pVal = sqlite3ValueNew(db); nVal = pExpr->token.n - 3; zVal = (char*)pExpr->token.z + 2; sqlite3VdbeMemSetStr(pVal, sqlite3HexToBlob(db, zVal, nVal), nVal/2, 0, sqlite3_free); } #endif *ppVal = pVal; return SQLITE_OK; no_mem: db->mallocFailed = 1; sqlite3_free(zVal); sqlite3ValueFree(pVal); *ppVal = 0; return SQLITE_NOMEM; } /* ** Change the string value of an sqlite3_value object ................................................................................ /* ** Free an sqlite3_value object */ SQLITE_PRIVATE void sqlite3ValueFree(sqlite3_value *v){ if( !v ) return; sqlite3VdbeMemRelease((Mem *)v); sqlite3_free(v); } /* ** Return the number of bytes in the sqlite3_value object assuming ** that it uses the encoding "enc" */ SQLITE_PRIVATE int sqlite3ValueBytes(sqlite3_value *pVal, u8 enc){ ................................................................................ ** ************************************************************************* ** This file contains code used for creating, destroying, and populating ** a VDBE (or an "sqlite3_stmt" as it is known to the outside world.) Prior ** to version 2.8.7, all this code was combined into the vdbe.c source file. ** But that file was getting too big so this subroutines were split out. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** When debugging the code generator in a symbolic debugger, one can ** set the sqlite3VdbeAddopTrace to 1 and all opcodes will be printed ................................................................................ } if( sqlite3VdbeOpcodeHasProperty(opcode, OPFLG_JUMP) && pOp->p2<0 ){ assert( -1-pOp->p2<p->nLabel ); pOp->p2 = aLabel[-1-pOp->p2]; } } sqlite3_free(p->aLabel); p->aLabel = 0; *pMaxFuncArgs = nMaxArgs; /* If we never rollback a statement transaction, then statement ** transactions are not needed. So change every OP_Statement ** opcode into an OP_Noop. This avoid a call to sqlite3OsOpenExclusive() ................................................................................ } /* ** If the input FuncDef structure is ephemeral, then free it. If ** the FuncDef is not ephermal, then do nothing. */ static void freeEphemeralFunction(FuncDef *pDef){ if( pDef && (pDef->flags & SQLITE_FUNC_EPHEM)!=0 ){ sqlite3_free(pDef); } } /* ** Delete a P4 value if necessary. */ static void freeP4(int p4type, void *p4){ if( p4 ){ switch( p4type ){ case P4_REAL: case P4_INT64: case P4_MPRINTF: case P4_DYNAMIC: case P4_KEYINFO: case P4_INTARRAY: case P4_KEYINFO_HANDOFF: { sqlite3_free(p4); break; } case P4_VDBEFUNC: { VdbeFunc *pVdbeFunc = (VdbeFunc *)p4; freeEphemeralFunction(pVdbeFunc->pFunc); sqlite3VdbeDeleteAuxData(pVdbeFunc, 0); sqlite3_free(pVdbeFunc); break; } case P4_FUNCDEF: { freeEphemeralFunction((FuncDef*)p4); break; } case P4_MEM: { sqlite3ValueFree((sqlite3_value*)p4); break; } } ................................................................................ /* ** Change N opcodes starting at addr to No-ops. */ SQLITE_PRIVATE void sqlite3VdbeChangeToNoop(Vdbe *p, int addr, int N){ if( p && p->aOp ){ VdbeOp *pOp = &p->aOp[addr]; while( N-- ){ freeP4(pOp->p4type, pOp->p4.p); memset(pOp, 0, sizeof(pOp[0])); pOp->opcode = OP_Noop; pOp++; } } } ................................................................................ ** to a string or structure that is guaranteed to exist for the lifetime of ** the Vdbe. In these cases we can just copy the pointer. ** ** If addr<0 then change P4 on the most recently inserted instruction. */ SQLITE_PRIVATE void sqlite3VdbeChangeP4(Vdbe *p, int addr, const char *zP4, int n){ Op *pOp; assert( p!=0 ); assert( p->magic==VDBE_MAGIC_INIT ); if( p->aOp==0 || p->db->mallocFailed ){ if (n != P4_KEYINFO) { freeP4(n, (void*)*(char**)&zP4); } return; } assert( addr<p->nOp ); if( addr<0 ){ addr = p->nOp - 1; if( addr<0 ) return; } pOp = &p->aOp[addr]; freeP4(pOp->p4type, pOp->p4.p); pOp->p4.p = 0; if( n==P4_INT32 ){ /* Note: this cast is safe, because the origin data point was an int ** that was cast to a (const char *). */ pOp->p4.i = SQLITE_PTR_TO_INT(zP4); pOp->p4type = n; }else if( zP4==0 ){ ................................................................................ SQLITE_PRIVATE void sqlite3VdbeComment(Vdbe *p, const char *zFormat, ...){ va_list ap; assert( p->nOp>0 || p->aOp==0 ); assert( p->aOp==0 || p->aOp[p->nOp-1].zComment==0 || p->db->mallocFailed ); if( p->nOp ){ char **pz = &p->aOp[p->nOp-1].zComment; va_start(ap, zFormat); sqlite3_free(*pz); *pz = sqlite3VMPrintf(p->db, zFormat, ap); va_end(ap); } } SQLITE_PRIVATE void sqlite3VdbeNoopComment(Vdbe *p, const char *zFormat, ...){ va_list ap; sqlite3VdbeAddOp0(p, OP_Noop); assert( p->nOp>0 || p->aOp==0 ); assert( p->aOp==0 || p->aOp[p->nOp-1].zComment==0 || p->db->mallocFailed ); if( p->nOp ){ char **pz = &p->aOp[p->nOp-1].zComment; va_start(ap, zFormat); sqlite3_free(*pz); *pz = sqlite3VMPrintf(p->db, zFormat, ap); va_end(ap); } } #endif /* NDEBUG */ /* ................................................................................ fflush(pOut); } #endif /* ** Release an array of N Mem elements */ static void releaseMemArray(Mem *p, int N, int freebuffers){ if( p && N ){ sqlite3 *db = p->db; int malloc_failed = db->mallocFailed; while( N-->0 ){ assert( N<2 || p[0].db==p[1].db ); if( freebuffers ){ sqlite3VdbeMemRelease(p); }else{ sqlite3VdbeMemReleaseExternal(p); } p->flags = MEM_Null; p++; } db->mallocFailed = malloc_failed; } } ................................................................................ int ii; int nFree = 0; assert( sqlite3_mutex_held(p->db->mutex) ); for(ii=1; ii<=p->nMem; ii++){ Mem *pMem = &p->aMem[ii]; if( pMem->z && pMem->flags&MEM_Dyn ){ assert( !pMem->xDel ); nFree += sqlite3MallocSize(pMem->z); sqlite3VdbeMemRelease(pMem); } } return nFree; } #endif ................................................................................ assert( db->magic==SQLITE_MAGIC_BUSY ); assert( p->rc==SQLITE_OK || p->rc==SQLITE_BUSY ); /* Even though this opcode does not use dynamic strings for ** the result, result columns may become dynamic if the user calls ** sqlite3_column_text16(), causing a translation to UTF-16 encoding. */ releaseMemArray(pMem, p->nMem, 1); do{ i = p->pc++; }while( i<p->nOp && p->explain==2 && p->aOp[i].opcode!=OP_Explain ); if( i>=p->nOp ){ p->rc = SQLITE_OK; rc = SQLITE_DONE; ................................................................................ (void)sqlite3SafetyOff(p->db); pModule->xClose(pVtabCursor); (void)sqlite3SafetyOn(p->db); p->inVtabMethod = 0; } #endif if( !pCx->ephemPseudoTable ){ sqlite3_free(pCx->pData); } /* memset(pCx, 0, sizeof(Cursor)); */ /* sqlite3_free(pCx->aType); */ /* sqlite3_free(pCx); */ } /* ** Close all cursors except for VTab cursors that are currently ** in use. */ static void closeAllCursorsExceptActiveVtabs(Vdbe *p){ ................................................................................ /* ** Clean up the VM after execution. ** ** This routine will automatically close any cursors, lists, and/or ** sorters that were left open. It also deletes the values of ** variables in the aVar[] array. */ static void Cleanup(Vdbe *p, int freebuffers){ int i; closeAllCursorsExceptActiveVtabs(p); for(i=1; i<=p->nMem; i++){ MemSetTypeFlag(&p->aMem[i], MEM_Null); } releaseMemArray(&p->aMem[1], p->nMem, freebuffers); sqlite3VdbeFifoClear(&p->sFifo); if( p->contextStack ){ for(i=0; i<p->contextStackTop; i++){ sqlite3VdbeFifoClear(&p->contextStack[i].sFifo); } sqlite3_free(p->contextStack); } p->contextStack = 0; p->contextStackDepth = 0; p->contextStackTop = 0; sqlite3_free(p->zErrMsg); p->zErrMsg = 0; p->pResultSet = 0; } /* ** Set the number of result columns that will be returned by this SQL ** statement. This is now set at compile time, rather than during ** execution of the vdbe program so that sqlite3_column_count() can ** be called on an SQL statement before sqlite3_step(). */ SQLITE_PRIVATE void sqlite3VdbeSetNumCols(Vdbe *p, int nResColumn){ Mem *pColName; int n; releaseMemArray(p->aColName, p->nResColumn*COLNAME_N, 1); sqlite3_free(p->aColName); n = nResColumn*COLNAME_N; p->nResColumn = nResColumn; p->aColName = pColName = (Mem*)sqlite3DbMallocZero(p->db, sizeof(Mem)*n ); if( p->aColName==0 ) return; while( n-- > 0 ){ pColName->flags = MEM_Null; pColName->db = p->db; pColName++; } } ................................................................................ ** Set the name of the idx'th column to be returned by the SQL statement. ** zName must be a pointer to a nul terminated string. ** ** This call must be made after a call to sqlite3VdbeSetNumCols(). ** ** If N==P4_STATIC it means that zName is a pointer to a constant static ** string and we can just copy the pointer. If it is P4_DYNAMIC, then ** the string is freed using sqlite3_free() when the vdbe is finished with ** it. Otherwise, N bytes of zName are copied. */ SQLITE_PRIVATE int sqlite3VdbeSetColName(Vdbe *p, int idx, int var, const char *zName, int N){ int rc; Mem *pColName; assert( idx<p->nResColumn ); assert( var<COLNAME_N ); ................................................................................ /* ** A read or write transaction may or may not be active on database handle ** db. If a transaction is active, commit it. If there is a ** write-transaction spanning more than one database file, this routine ** takes care of the master journal trickery. */ static int vdbeCommit(sqlite3 *db){ int i; int nTrans = 0; /* Number of databases with an active write-transaction */ int rc = SQLITE_OK; int needXcommit = 0; /* Before doing anything else, call the xSync() callback for any ** virtual module tables written in this transaction. This has to ** be done before determining whether a master journal file is ** required, as an xSync() callback may add an attached database ** to the transaction. */ rc = sqlite3VtabSync(db, rc); if( rc!=SQLITE_OK ){ return rc; } /* This loop determines (a) if the commit hook should be invoked and ** (b) how many database files have open write transactions, not ** including the temp database. (b) is important because if more than ................................................................................ sqlite3_file *pMaster = 0; i64 offset = 0; int res; /* Select a master journal file name */ do { u32 random; sqlite3_free(zMaster); sqlite3_randomness(sizeof(random), &random); zMaster = sqlite3MPrintf(db, "%s-mj%08X", zMainFile, random&0x7fffffff); if( !zMaster ){ return SQLITE_NOMEM; } rc = sqlite3OsAccess(pVfs, zMaster, SQLITE_ACCESS_EXISTS, &res); }while( rc==SQLITE_OK && res ); ................................................................................ /* Open the master journal. */ rc = sqlite3OsOpenMalloc(pVfs, zMaster, &pMaster, SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE| SQLITE_OPEN_EXCLUSIVE|SQLITE_OPEN_MASTER_JOURNAL, 0 ); } if( rc!=SQLITE_OK ){ sqlite3_free(zMaster); return rc; } /* Write the name of each database file in the transaction into the new ** master journal file. If an error occurs at this point close ** and delete the master journal file. All the individual journal files ** still have 'null' as the master journal pointer, so they will roll ................................................................................ needSync = 1; } rc = sqlite3OsWrite(pMaster, zFile, strlen(zFile)+1, offset); offset += strlen(zFile)+1; if( rc!=SQLITE_OK ){ sqlite3OsCloseFree(pMaster); sqlite3OsDelete(pVfs, zMaster, 0); sqlite3_free(zMaster); return rc; } } } /* Sync the master journal file. If the IOCAP_SEQUENTIAL device ** flag is set this is not required. ................................................................................ */ zMainFile = sqlite3BtreeGetDirname(db->aDb[0].pBt); if( (needSync && (0==(sqlite3OsDeviceCharacteristics(pMaster)&SQLITE_IOCAP_SEQUENTIAL)) && (rc=sqlite3OsSync(pMaster, SQLITE_SYNC_NORMAL))!=SQLITE_OK) ){ sqlite3OsCloseFree(pMaster); sqlite3OsDelete(pVfs, zMaster, 0); sqlite3_free(zMaster); return rc; } /* Sync all the db files involved in the transaction. The same call ** sets the master journal pointer in each individual journal. If ** an error occurs here, do not delete the master journal file. ** ................................................................................ Btree *pBt = db->aDb[i].pBt; if( pBt ){ rc = sqlite3BtreeCommitPhaseOne(pBt, zMaster); } } sqlite3OsCloseFree(pMaster); if( rc!=SQLITE_OK ){ sqlite3_free(zMaster); return rc; } /* Delete the master journal file. This commits the transaction. After ** doing this the directory is synced again before any individual ** transaction files are deleted. */ rc = sqlite3OsDelete(pVfs, zMaster, 1); sqlite3_free(zMaster); zMaster = 0; if( rc ){ return rc; } /* All files and directories have already been synced, so the following ** calls to sqlite3BtreeCommitPhaseTwo() are only closing files and ................................................................................ */ if( db->autoCommit && db->activeVdbeCnt==1 ){ if( p->rc==SQLITE_OK || (p->errorAction==OE_Fail && !isSpecialError) ){ /* The auto-commit flag is true, and the vdbe program was ** successful or hit an 'OR FAIL' constraint. This means a commit ** is required. */ int rc = vdbeCommit(db); if( rc==SQLITE_BUSY ){ sqlite3BtreeMutexArrayLeave(&p->aMutex); return SQLITE_BUSY; }else if( rc!=SQLITE_OK ){ p->rc = rc; sqlite3RollbackAll(db); }else{ ................................................................................ for(i=0; xFunc && i<db->nDb; i++){ int rc; Btree *pBt = db->aDb[i].pBt; if( pBt ){ rc = xFunc(pBt); if( rc && (p->rc==SQLITE_OK || p->rc==SQLITE_CONSTRAINT) ){ p->rc = rc; sqlite3_free(p->zErrMsg); p->zErrMsg = 0; } } } /* If this was an INSERT, UPDATE or DELETE and the statement was committed, ** set the change counter. ................................................................................ ** After this routine is run, the VDBE should be ready to be executed ** again. ** ** To look at it another way, this routine resets the state of the ** virtual machine from VDBE_MAGIC_RUN or VDBE_MAGIC_HALT back to ** VDBE_MAGIC_INIT. */ SQLITE_PRIVATE int sqlite3VdbeReset(Vdbe *p, int freebuffers){ sqlite3 *db; db = p->db; /* If the VM did not run to completion or if it encountered an ** error, then it might not have been halted properly. So halt ** it now. */ ................................................................................ /* If the VDBE has be run even partially, then transfer the error code ** and error message from the VDBE into the main database structure. But ** if the VDBE has just been set to run but has not actually executed any ** instructions yet, leave the main database error information unchanged. */ if( p->pc>=0 ){ if( p->zErrMsg ){ sqlite3ValueSetStr(db->pErr,-1,p->zErrMsg,SQLITE_UTF8,sqlite3_free); db->errCode = p->rc; p->zErrMsg = 0; }else if( p->rc ){ sqlite3Error(db, p->rc, 0); }else{ sqlite3Error(db, SQLITE_OK, 0); } }else if( p->rc && p->expired ){ /* The expired flag was set on the VDBE before the first call ** to sqlite3_step(). For consistency (since sqlite3_step() was ** called), set the database error in this case as well. */ sqlite3Error(db, p->rc, 0); sqlite3ValueSetStr(db->pErr, -1, p->zErrMsg, SQLITE_UTF8, sqlite3_free); p->zErrMsg = 0; } /* Reclaim all memory used by the VDBE */ Cleanup(p, freebuffers); /* Save profiling information from this VDBE run. */ #ifdef VDBE_PROFILE { FILE *out = fopen("vdbe_profile.out", "a"); if( out ){ ................................................................................ sqlite3VdbePrintOp(out, i, &p->aOp[i]); } fclose(out); } } #endif p->magic = VDBE_MAGIC_INIT; p->aborted = 0; return p->rc & db->errMask; } /* ** Clean up and delete a VDBE after execution. Return an integer which is ** the result code. Write any error message text into *pzErrMsg. */ SQLITE_PRIVATE int sqlite3VdbeFinalize(Vdbe *p){ int rc = SQLITE_OK; if( p->magic==VDBE_MAGIC_RUN || p->magic==VDBE_MAGIC_HALT ){ rc = sqlite3VdbeReset(p, 1); assert( (rc & p->db->errMask)==rc ); }else if( p->magic!=VDBE_MAGIC_INIT ){ return SQLITE_MISUSE; } releaseMemArray(&p->aMem[1], p->nMem, 1); sqlite3VdbeDelete(p); return rc; } /* ** Call the destructor for each auxdata entry in pVdbeFunc for which ** the corresponding bit in mask is clear. Auxdata entries beyond 31 ................................................................................ } /* ** Delete an entire VDBE. */ SQLITE_PRIVATE void sqlite3VdbeDelete(Vdbe *p){ int i; if( p==0 ) return; Cleanup(p, 1); if( p->pPrev ){ p->pPrev->pNext = p->pNext; }else{ assert( p->db->pVdbe==p ); p->db->pVdbe = p->pNext; } if( p->pNext ){ p->pNext->pPrev = p->pPrev; } if( p->aOp ){ Op *pOp = p->aOp; for(i=0; i<p->nOp; i++, pOp++){ freeP4(pOp->p4type, pOp->p4.p); #ifdef SQLITE_DEBUG sqlite3_free(pOp->zComment); #endif } sqlite3_free(p->aOp); } releaseMemArray(p->aVar, p->nVar, 1); sqlite3_free(p->aLabel); if( p->aMem ){ sqlite3_free(&p->aMem[1]); } releaseMemArray(p->aColName, p->nResColumn*COLNAME_N, 1); sqlite3_free(p->aColName); sqlite3_free(p->zSql); p->magic = VDBE_MAGIC_DEAD; sqlite3_free(p); } /* ** If a MoveTo operation is pending on the given cursor, then do that ** MoveTo now. Return an error code. If no MoveTo is pending, this ** routine does nothing and returns SQLITE_OK. */ ................................................................................ } /* ** The following functions: ** ** sqlite3VdbeSerialType() ** sqlite3VdbeSerialTypeLen() ** sqlite3VdbeSerialRead() ** sqlite3VdbeSerialLen() ** sqlite3VdbeSerialWrite() ** ** encapsulate the code that serializes values for storage in SQLite ** data and index records. Each serialized value consists of a ** 'serial-type' and a blob of data. The serial type is an 8-byte unsigned ** integer, stored as a varint. ** ** In an SQLite index record, the serial type is stored directly before ................................................................................ const void *pKey, /* The binary record */ void *pSpace, /* Space available to hold resulting object */ int szSpace /* Size of pSpace[] in bytes */ ){ const unsigned char *aKey = (const unsigned char *)pKey; UnpackedRecord *p; int nByte; int i, idx, d; u32 szHdr; Mem *pMem; assert( sizeof(Mem)>sizeof(*p) ); nByte = sizeof(Mem)*(pKeyInfo->nField+2); if( nByte>szSpace ){ p = sqlite3DbMallocRaw(pKeyInfo->db, nByte); ................................................................................ } p->pKeyInfo = pKeyInfo; p->nField = pKeyInfo->nField + 1; p->needDestroy = 1; p->aMem = pMem = &((Mem*)p)[1]; idx = getVarint32(aKey, szHdr); d = szHdr; i = 0; while( idx<szHdr && i<p->nField ){ u32 serial_type; idx += getVarint32( aKey+idx, serial_type); if( d>=nKey && sqlite3VdbeSerialTypeLen(serial_type)>0 ) break; pMem->enc = pKeyInfo->enc; pMem->db = pKeyInfo->db; pMem->flags = 0; pMem->zMalloc = 0; d += sqlite3VdbeSerialGet(&aKey[d], serial_type, pMem); pMem++; i++; } p->nField = i; return (void*)p; } /* ** This routine destroys a UnpackedRecord object */ SQLITE_PRIVATE void sqlite3VdbeDeleteUnpackedRecord(UnpackedRecord *p){ ................................................................................ for(i=0, pMem=p->aMem; i<p->nField; i++, pMem++){ if( pMem->zMalloc ){ sqlite3VdbeMemRelease(pMem); } } } if( p->needFree ){ sqlite3_free(p); } } } /* ** This function compares the two table rows or index records ** specified by {nKey1, pKey1} and pPKey2. It returns a negative, zero ................................................................................ /* ** The argument is an index entry composed using the OP_MakeRecord opcode. ** The last entry in this record should be an integer (specifically ** an integer rowid). This routine returns the number of bytes in ** that integer. */ SQLITE_PRIVATE int sqlite3VdbeIdxRowidLen(const u8 *aKey){ u32 szHdr; /* Size of the header */ u32 typeRowid; /* Serial type of the rowid */ (void)getVarint32(aKey, szHdr); (void)getVarint32(&aKey[szHdr-1], typeRowid); return sqlite3VdbeSerialTypeLen(typeRowid); } /* ** pCur points at an index entry created using the OP_MakeRecord opcode. ** Read the rowid (the last field in the record) and store it in *rowid. ** Return SQLITE_OK if everything works, or an error code otherwise. ................................................................................ if( nCellKey<=0 ){ *res = 0; return SQLITE_OK; } m.db = 0; m.flags = 0; m.zMalloc = 0; rc = sqlite3VdbeMemFromBtree(pC->pCursor, 0, nCellKey, 1, &m); if( rc ){ return rc; } lenRowid = sqlite3VdbeIdxRowidLen((u8*)m.z); if( !pUnpacked ){ pRec = sqlite3VdbeRecordUnpack(pC->pKeyInfo, nKey, pKey, zSpace, sizeof(zSpace)); }else{ pRec = pUnpacked; } if( pRec==0 ){ ................................................................................ ** May you share freely, never taking more than you give. ** ************************************************************************* ** ** This file contains code use to implement APIs that are part of the ** VDBE. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT /* ** The following structure contains pointers to the end points of a ** doubly-linked list of all compiled SQL statements that may be holding ** buffers eligible for release when the sqlite3_release_memory() interface is ................................................................................ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt){ int rc; if( pStmt==0 ){ rc = SQLITE_OK; }else{ Vdbe *v = (Vdbe*)pStmt; sqlite3_mutex_enter(v->db->mutex); rc = sqlite3VdbeReset(v, 1); stmtLruAdd(v); sqlite3VdbeMakeReady(v, -1, 0, 0, 0); assert( (rc & (v->db->errMask))==rc ); sqlite3_mutex_leave(v->db->mutex); } return rc; } ................................................................................ return SQLITE_MISUSE; } /* Assert that malloc() has not failed */ db = p->db; assert( !db->mallocFailed ); if( p->aborted ){ return SQLITE_ABORT; } if( p->pc<=0 && p->expired ){ if( p->rc==SQLITE_OK ){ p->rc = SQLITE_SCHEMA; } rc = SQLITE_ERROR; goto end_of_step; } ................................................................................ sqlite3OsCurrentTime(db->pVfs, &rNow); elapseTime = (rNow - (int)rNow)*3600.0*24.0*1000000000.0 - p->startTime; db->xProfile(db->pProfileArg, p->aOp[0].p4.z, elapseTime); } #endif sqlite3Error(p->db, rc, 0); p->rc = sqlite3ApiExit(p->db, p->rc); end_of_step: assert( (rc&0xff)==rc ); if( p->zSql && (rc&0xff)<SQLITE_ROW ){ /* This behavior occurs if sqlite3_prepare_v2() was used to build ** the prepared statement. Return error codes directly */ sqlite3Error(p->db, p->rc, 0); return p->rc; }else{ /* This is for legacy sqlite3_prepare() builds and when the code ** is SQLITE_ROW or SQLITE_DONE */ return rc; } } ................................................................................ ** into the database handle. This block copies the error message ** from the database handle into the statement and sets the statement ** program counter to 0 to ensure that when the statement is ** finalized or reset the parser error message is available via ** sqlite3_errmsg() and sqlite3_errcode(). */ const char *zErr = (const char *)sqlite3_value_text(db->pErr); sqlite3_free(v->zErrMsg); if( !db->mallocFailed ){ v->zErrMsg = sqlite3DbStrDup(db, zErr); } else { v->zErrMsg = 0; v->rc = SQLITE_NOMEM; } } ................................................................................ ** ** Various scripts scan this source file in order to generate HTML ** documentation, headers files, or other derived files. The formatting ** of the code in this file is, therefore, important. See other comments ** in this file for details. If in doubt, do not deviate from existing ** commenting and indentation practices when changing or adding code. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** The following global variable is incremented every time a cursor ** moves, either by the OP_MoveXX, OP_Next, or OP_Prev opcodes. The test ** procedures use this information to make sure that indices are ** working correctly. This variable has no function other than to ................................................................................ ** May you share freely, never taking more than you give. ** ****************************************************************************** ** ** This file contains inline asm code for retrieving "high-performance" ** counters for x86 class CPUs. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef _HWTIME_H_ #define _HWTIME_H_ /* ** The following routine only works on pentium-class (or newer) processors. ** It uses the RDTSC opcode to read the cycle count value out of the ................................................................................ __inline__ sqlite_uint64 sqlite3Hwtime(void){ unsigned long val; __asm__ __volatile__ ("rdtsc" : "=A" (val)); return val; } #else #error Need implementation of sqlite3Hwtime() for your platform. /* ** To compile without implementing sqlite3Hwtime() for your platform, ** you can remove the above #error and use the following ................................................................................ pOp->opcode = OP_String; pOp->p1 = strlen(pOp->p4.z); #ifndef SQLITE_OMIT_UTF16 if( encoding!=SQLITE_UTF8 ){ sqlite3VdbeMemSetStr(pOut, pOp->p4.z, -1, SQLITE_UTF8, SQLITE_STATIC); if( SQLITE_OK!=sqlite3VdbeChangeEncoding(pOut, encoding) ) goto no_mem; if( SQLITE_OK!=sqlite3VdbeMemDynamicify(pOut) ) goto no_mem; pOut->zMalloc = 0; pOut->flags |= MEM_Static; pOut->flags &= ~MEM_Dyn; if( pOp->p4type==P4_DYNAMIC ){ sqlite3_free(pOp->p4.z); } pOp->p4type = P4_DYNAMIC; pOp->p4.z = pOut->z; pOp->p1 = pOut->n; if( pOp->p1>db->aLimit[SQLITE_LIMIT_LENGTH] ){ goto too_big; } ................................................................................ */ case OP_Add: /* same as TK_PLUS, in1, in2, out3 */ case OP_Subtract: /* same as TK_MINUS, in1, in2, out3 */ case OP_Multiply: /* same as TK_STAR, in1, in2, out3 */ case OP_Divide: /* same as TK_SLASH, in1, in2, out3 */ case OP_Remainder: { /* same as TK_REM, in1, in2, out3 */ int flags; flags = pIn1->flags | pIn2->flags; if( (flags & MEM_Null)!=0 ) goto arithmetic_result_is_null; if( (pIn1->flags & pIn2->flags & MEM_Int)==MEM_Int ){ i64 a, b; a = pIn1->u.i; b = pIn2->u.i; switch( pOp->opcode ){ ................................................................................ ** then there are not enough fields in the record to satisfy the ** request. In this case, set the value NULL or to P4 if P4 is ** a pointer to a Mem object. */ if( aOffset[p2] ){ assert( rc==SQLITE_OK ); if( zRec ){ if( pDest->flags&MEM_Dyn ){ sqlite3VdbeSerialGet((u8 *)&zRec[aOffset[p2]], aType[p2], &sMem); sMem.db = db; rc = sqlite3VdbeMemCopy(pDest, &sMem); assert( !(sMem.flags&MEM_Dyn) ); if( rc!=SQLITE_OK ){ goto op_column_out; } }else{ sqlite3VdbeSerialGet((u8 *)&zRec[aOffset[p2]], aType[p2], pDest); } }else{ len = sqlite3VdbeSerialTypeLen(aType[p2]); sqlite3VdbeMemMove(&sMem, pDest); rc = sqlite3VdbeMemFromBtree(pCrsr, aOffset[p2], len, pC->isIndex, &sMem); if( rc!=SQLITE_OK ){ goto op_column_out; } ................................................................................ if( pBt ){ rc = sqlite3BtreeGetMeta(pBt, 1, (u32 *)&iMeta); }else{ rc = SQLITE_OK; iMeta = 0; } if( rc==SQLITE_OK && iMeta!=pOp->p2 ){ sqlite3_free(p->zErrMsg); p->zErrMsg = sqlite3DbStrDup(db, "database schema has changed"); /* If the schema-cookie from the database file matches the cookie ** stored with the in-memory representation of the schema, do ** not reload the schema from the database file. ** ** If virtual-tables are in use, this is not just an optimization. ** Often, v-tables store their data in other SQLite tables, which ................................................................................ /* Make sure K is a string and make zKey point to K */ assert( pK->flags & MEM_Blob ); zKey = pK->z; nKey = pK->n; szRowid = sqlite3VdbeIdxRowidLen((u8*)zKey); len = nKey-szRowid; /* Search for an entry in P1 where all but the last four bytes match K. ** If there is no such entry, jump immediately to P2. */ assert( pCx->deferredMoveto==0 ); pCx->cacheStatus = CACHE_STALE; ................................................................................ pData->z = 0; pData->n = 0; }else{ assert( pData->flags & (MEM_Blob|MEM_Str) ); } if( pC->pseudoTable ){ if( !pC->ephemPseudoTable ){ sqlite3_free(pC->pData); } pC->iKey = iKey; pC->nData = pData->n; if( pData->z==pData->zMalloc || pC->ephemPseudoTable ){ pC->pData = pData->z; if( !pC->ephemPseudoTable ){ pData->flags &= ~MEM_Dyn; ................................................................................ if( zSql==0 ) goto no_mem; (void)sqlite3SafetyOff(db); assert( db->init.busy==0 ); db->init.busy = 1; assert( !db->mallocFailed ); rc = sqlite3_exec(db, zSql, sqlite3InitCallback, &initData, 0); if( rc==SQLITE_ABORT ) rc = initData.rc; sqlite3_free(zSql); db->init.busy = 0; (void)sqlite3SafetyOn(db); if( rc==SQLITE_NOMEM ){ goto no_mem; } break; } ................................................................................ int j; /* Loop counter */ int nErr; /* Number of errors reported */ char *z; /* Text of the error report */ Mem *pnErr; /* Register keeping track of errors remaining */ nRoot = pOp->p2; assert( nRoot>0 ); aRoot = sqlite3Malloc( sizeof(int)*(nRoot+1) ); if( aRoot==0 ) goto no_mem; assert( pOp->p3>0 && pOp->p3<=p->nMem ); pnErr = &p->aMem[pOp->p3]; assert( (pnErr->flags & MEM_Int)!=0 ); assert( (pnErr->flags & (MEM_Str|MEM_Blob))==0 ); pIn1 = &p->aMem[pOp->p1]; for(j=0; j<nRoot; j++){ ................................................................................ aRoot[j] = sqlite3VdbeIntValue(&pIn1[j]); } aRoot[j] = 0; assert( pOp->p5<db->nDb ); assert( (p->btreeMask & (1<<pOp->p5))!=0 ); z = sqlite3BtreeIntegrityCheck(db->aDb[pOp->p5].pBt, aRoot, nRoot, pnErr->u.i, &nErr); pnErr->u.i -= nErr; sqlite3VdbeMemSetNull(pIn1); if( nErr==0 ){ assert( z==0 ); }else{ sqlite3VdbeMemSetStr(pIn1, z, -1, SQLITE_UTF8, sqlite3_free); } UPDATE_MAX_BLOBSIZE(pIn1); sqlite3VdbeChangeEncoding(pIn1, encoding); sqlite3_free(aRoot); break; } #endif /* SQLITE_OMIT_INTEGRITY_CHECK */ /* Opcode: FifoWrite P1 * * * * ** ** Write the integer from register P1 into the Fifo. */ case OP_FifoWrite: { /* in1 */ if( sqlite3VdbeFifoPush(&p->sFifo, sqlite3VdbeIntValue(pIn1))==SQLITE_NOMEM ){ goto no_mem; } break; } /* Opcode: FifoRead P1 P2 * * * ................................................................................ sizeof(Context)*(i+1)); if( p->contextStack==0 ) goto no_mem; } pContext = &p->contextStack[i]; pContext->lastRowid = db->lastRowid; pContext->nChange = p->nChange; pContext->sFifo = p->sFifo; sqlite3VdbeFifoInit(&p->sFifo); break; } /* Opcode: ContextPop * * * ** ** Restore the Vdbe context to the state it was in when contextPush was last ** executed. The context stores the last insert row id, the last statement ................................................................................ break; } #endif /* SQLITE_OMIT_SHARED_CACHE */ #ifndef SQLITE_OMIT_VIRTUALTABLE /* Opcode: VBegin * * * P4 * ** ** P4 a pointer to an sqlite3_vtab structure. Call the xBegin method ** for that table. */ case OP_VBegin: { rc = sqlite3VtabBegin(db, pOp->p4.pVtab); break; } #endif /* SQLITE_OMIT_VIRTUALTABLE */ #ifndef SQLITE_OMIT_VIRTUALTABLE /* Opcode: VCreate P1 * * P4 * ** ................................................................................ sqlite3_vtab *pVtab = pOp->p4.pVtab; sqlite3_module *pModule = (sqlite3_module *)pVtab->pModule; assert(pVtab && pModule); if( sqlite3SafetyOff(db) ) goto abort_due_to_misuse; rc = pModule->xOpen(pVtab, &pVtabCursor); if( sqlite3SafetyOn(db) ) goto abort_due_to_misuse; if( SQLITE_OK==rc ){ /* Initialize sqlite3_vtab_cursor base class */ pVtabCursor->pVtab = pVtab; /* Initialise vdbe cursor object */ pCur = allocateCursor(p, pOp->p1, &pOp[-1], -1, 0); ................................................................................ */ case OP_VFilter: { /* jump */ int nArg; int iQuery; const sqlite3_module *pModule; Mem *pQuery = &p->aMem[pOp->p3]; Mem *pArgc = &pQuery[1]; Cursor *pCur = p->apCsr[pOp->p1]; REGISTER_TRACE(pOp->p3, pQuery); assert( pCur->pVtabCursor ); pModule = pCur->pVtabCursor->pVtab->pModule; /* Grab the index number and argc parameters */ assert( (pQuery->flags&MEM_Int)!=0 && pArgc->flags==MEM_Int ); nArg = pArgc->u.i; iQuery = pQuery->u.i; /* Invoke the xFilter method */ ................................................................................ Mem **apArg = p->apArg; for(i = 0; i<nArg; i++){ apArg[i] = &pArgc[i+1]; storeTypeInfo(apArg[i], 0); } if( sqlite3SafetyOff(db) ) goto abort_due_to_misuse; p->inVtabMethod = 1; rc = pModule->xFilter(pCur->pVtabCursor, iQuery, pOp->p4.z, nArg, apArg); p->inVtabMethod = 0; if( rc==SQLITE_OK ){ res = pModule->xEof(pCur->pVtabCursor); } if( sqlite3SafetyOn(db) ) goto abort_due_to_misuse; if( res ){ pc = pOp->p2 - 1; } } ................................................................................ #ifndef SQLITE_OMIT_VIRTUALTABLE /* Opcode: VRowid P1 P2 * * * ** ** Store into register P2 the rowid of ** the virtual-table that the P1 cursor is pointing to. */ case OP_VRowid: { /* out2-prerelease */ const sqlite3_module *pModule; sqlite_int64 iRow; Cursor *pCur = p->apCsr[pOp->p1]; assert( pCur->pVtabCursor ); if( pCur->nullRow ){ break; } pModule = pCur->pVtabCursor->pVtab->pModule; assert( pModule->xRowid ); if( sqlite3SafetyOff(db) ) goto abort_due_to_misuse; rc = pModule->xRowid(pCur->pVtabCursor, &iRow); if( sqlite3SafetyOn(db) ) goto abort_due_to_misuse; MemSetTypeFlag(pOut, MEM_Int); pOut->u.i = iRow; break; } #endif /* SQLITE_OMIT_VIRTUALTABLE */ ................................................................................ /* Opcode: VColumn P1 P2 P3 * * ** ** Store the value of the P2-th column of ** the row of the virtual-table that the ** P1 cursor is pointing to into register P3. */ case OP_VColumn: { const sqlite3_module *pModule; Mem *pDest; sqlite3_context sContext; Cursor *pCur = p->apCsr[pOp->p1]; assert( pCur->pVtabCursor ); assert( pOp->p3>0 && pOp->p3<=p->nMem ); pDest = &p->aMem[pOp->p3]; if( pCur->nullRow ){ sqlite3VdbeMemSetNull(pDest); break; } pModule = pCur->pVtabCursor->pVtab->pModule; assert( pModule->xColumn ); memset(&sContext, 0, sizeof(sContext)); /* The output cell may already have a buffer allocated. Move ** the current contents to sContext.s so in case the user-function ** can use the already allocated buffer instead of allocating a ** new one. */ sqlite3VdbeMemMove(&sContext.s, pDest); MemSetTypeFlag(&sContext.s, MEM_Null); if( sqlite3SafetyOff(db) ) goto abort_due_to_misuse; rc = pModule->xColumn(pCur->pVtabCursor, &sContext, pOp->p2); /* Copy the result of the function to the P3 register. We ** do this regardless of whether or not an error occured to ensure any ** dynamic allocation in sContext.s (a Mem struct) is released. */ sqlite3VdbeChangeEncoding(&sContext.s, encoding); REGISTER_TRACE(pOp->p3, pDest); ................................................................................ /* Opcode: VNext P1 P2 * * * ** ** Advance virtual table P1 to the next row in its result set and ** jump to instruction P2. Or, if the virtual table has reached ** the end of its result set, then fall through to the next instruction. */ case OP_VNext: { /* jump */ const sqlite3_module *pModule; int res = 0; Cursor *pCur = p->apCsr[pOp->p1]; assert( pCur->pVtabCursor ); if( pCur->nullRow ){ break; } pModule = pCur->pVtabCursor->pVtab->pModule; assert( pModule->xNext ); /* Invoke the xNext() method of the module. There is no way for the ** underlying implementation to return an error if one occurs during ** xNext(). Instead, if an error occurs, true is returned (indicating that ** data is available) and the error code returned when xColumn or ** some other method is next invoked on the save virtual table cursor. */ if( sqlite3SafetyOff(db) ) goto abort_due_to_misuse; p->inVtabMethod = 1; rc = pModule->xNext(pCur->pVtabCursor); p->inVtabMethod = 0; if( rc==SQLITE_OK ){ res = pModule->xEof(pCur->pVtabCursor); } if( sqlite3SafetyOn(db) ) goto abort_due_to_misuse; if( !res ){ /* If there is data, jump to P2 */ ................................................................................ REGISTER_TRACE(pOp->p1, pName); Stringify(pName, encoding); if( sqlite3SafetyOff(db) ) goto abort_due_to_misuse; sqlite3VtabLock(pVtab); rc = pVtab->pModule->xRename(pVtab, pName->z); sqlite3VtabUnlock(db, pVtab); if( sqlite3SafetyOn(db) ) goto abort_due_to_misuse; break; } #endif ................................................................................ storeTypeInfo(pX, 0); apArg[i] = pX; pX++; } if( sqlite3SafetyOff(db) ) goto abort_due_to_misuse; sqlite3VtabLock(pVtab); rc = pModule->xUpdate(pVtab, nArg, apArg, &rowid); sqlite3VtabUnlock(db, pVtab); if( sqlite3SafetyOn(db) ) goto abort_due_to_misuse; if( pOp->p1 && rc==SQLITE_OK ){ assert( nArg>1 && apArg[0] && (apArg[0]->flags&MEM_Null) ); db->lastRowid = rowid; } p->nChange++; ................................................................................ ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** ** This file contains code used to implement incremental BLOB I/O. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef SQLITE_OMIT_INCRBLOB /* ** Valid sqlite3_blob* handles point to Incrblob structures. ................................................................................ sqlite3ErrorMsg(&sParse, "cannot open view: %s", zTable); } #endif if( !pTab ){ if( sParse.zErrMsg ){ sqlite3_snprintf(sizeof(zErr), zErr, "%s", sParse.zErrMsg); } sqlite3_free(sParse.zErrMsg); rc = SQLITE_ERROR; (void)sqlite3SafetyOff(db); sqlite3BtreeLeaveAll(db); goto blob_open_out; } /* Now search pTab for the exact column. */ ................................................................................ type==0?"null": type==7?"real": "integer" ); rc = SQLITE_ERROR; goto blob_open_out; } pBlob = (Incrblob *)sqlite3DbMallocZero(db, sizeof(Incrblob)); if( db->mallocFailed ){ sqlite3_free(pBlob); goto blob_open_out; } pBlob->flags = flags; pBlob->pCsr = v->apCsr[0]->pCursor; sqlite3BtreeEnterCursor(pBlob->pCsr); sqlite3BtreeCacheOverflow(pBlob->pCsr); sqlite3BtreeLeaveCursor(pBlob->pCsr); ................................................................................ ** sqlite3_blob_open(). */ SQLITE_API int sqlite3_blob_close(sqlite3_blob *pBlob){ Incrblob *p = (Incrblob *)pBlob; int rc; rc = sqlite3_finalize(p->pStmt); sqlite3_free(p); return rc; } /* ** Perform a read or write operation on a blob */ static int blobReadWrite( ................................................................................ ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** ** @(#) $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifdef SQLITE_ENABLE_ATOMIC_WRITE /* ** This file implements a special kind of sqlite3_file object used ** by SQLite to create journal files if the atomic-write optimization ................................................................................ ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains routines used for analyzing expressions and ** for generating VDBE code that evaluates expressions in SQLite. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** Return the 'affinity' of the expression pExpr if any. ** ** If pExpr is a column, a reference to a column via an 'AS' alias, ** or a sub-select with a column as the return value, then the ................................................................................ ** The collating sequence is marked as "explicit" using the EP_ExpCollate ** flag. An explicit collating sequence will override implicit ** collating sequences. */ SQLITE_PRIVATE Expr *sqlite3ExprSetColl(Parse *pParse, Expr *pExpr, Token *pName){ char *zColl = 0; /* Dequoted name of collation sequence */ CollSeq *pColl; zColl = sqlite3NameFromToken(pParse->db, pName); if( pExpr && zColl ){ pColl = sqlite3LocateCollSeq(pParse, zColl, -1); if( pColl ){ pExpr->pColl = pColl; pExpr->flags |= EP_ExpCollate; } } sqlite3_free(zColl); return pExpr; } /* ** Return the default collation sequence for the expression pExpr. If ** there is no default collation type, return 0. */ ................................................................................ Expr *pNew; pNew = sqlite3DbMallocZero(db, sizeof(Expr)); if( pNew==0 ){ /* When malloc fails, delete pLeft and pRight. Expressions passed to ** this function must always be allocated with sqlite3Expr() for this ** reason. */ sqlite3ExprDelete(pLeft); sqlite3ExprDelete(pRight); return 0; } pNew->op = op; pNew->pLeft = pLeft; pNew->pRight = pRight; pNew->iAgg = -1; pNew->span.z = (u8*)""; ................................................................................ ** Set the Expr.span field of the given expression to span all ** text between the two given tokens. Both tokens must be pointing ** at the same string. */ SQLITE_PRIVATE void sqlite3ExprSpan(Expr *pExpr, Token *pLeft, Token *pRight){ assert( pRight!=0 ); assert( pLeft!=0 ); if( pExpr && pRight->z && pLeft->z ){ pExpr->span.z = pLeft->z; pExpr->span.n = pRight->n + (pRight->z - pLeft->z); } } /* ** Construct a new expression node for a function with multiple ** arguments. */ SQLITE_PRIVATE Expr *sqlite3ExprFunction(Parse *pParse, ExprList *pList, Token *pToken){ Expr *pNew; assert( pToken ); pNew = sqlite3DbMallocZero(pParse->db, sizeof(Expr) ); if( pNew==0 ){ sqlite3ExprListDelete(pList); /* Avoid leaking memory when malloc fails */ return 0; } pNew->op = TK_FUNCTION; pNew->pList = pList; assert( pToken->dyn==0 ); pNew->token = *pToken; pNew->span = pNew->token; ................................................................................ sqlite3ErrorMsg(pParse, "too many SQL variables"); } } /* ** Recursively delete an expression tree. */ SQLITE_PRIVATE void sqlite3ExprDelete(Expr *p){ if( p==0 ) return; if( p->span.dyn ) sqlite3_free((char*)p->span.z); if( p->token.dyn ) sqlite3_free((char*)p->token.z); sqlite3ExprDelete(p->pLeft); sqlite3ExprDelete(p->pRight); sqlite3ExprListDelete(p->pList); sqlite3SelectDelete(p->pSelect); sqlite3_free(p); } /* ** The Expr.token field might be a string literal that is quoted. ** If so, remove the quotation marks. */ SQLITE_PRIVATE void sqlite3DequoteExpr(sqlite3 *db, Expr *p){ ................................................................................ pNew->pLeft = sqlite3ExprDup(db, p->pLeft); pNew->pRight = sqlite3ExprDup(db, p->pRight); pNew->pList = sqlite3ExprListDup(db, p->pList); pNew->pSelect = sqlite3SelectDup(db, p->pSelect); return pNew; } SQLITE_PRIVATE void sqlite3TokenCopy(sqlite3 *db, Token *pTo, Token *pFrom){ if( pTo->dyn ) sqlite3_free((char*)pTo->z); if( pFrom->z ){ pTo->n = pFrom->n; pTo->z = (u8*)sqlite3DbStrNDup(db, (char*)pFrom->z, pFrom->n); pTo->dyn = 1; }else{ pTo->z = 0; } ................................................................................ if( p==0 ) return 0; pNew = sqlite3DbMallocRaw(db, sizeof(*pNew) ); if( pNew==0 ) return 0; pNew->iECursor = 0; pNew->nExpr = pNew->nAlloc = p->nExpr; pNew->a = pItem = sqlite3DbMallocRaw(db, p->nExpr*sizeof(p->a[0]) ); if( pItem==0 ){ sqlite3_free(pNew); return 0; } pOldItem = p->a; for(i=0; i<p->nExpr; i++, pItem++, pOldItem++){ Expr *pNewExpr, *pOldExpr; pItem->pExpr = pNewExpr = sqlite3ExprDup(db, pOldExpr = pOldItem->pExpr); if( pOldExpr->span.z!=0 && pNewExpr ){ ................................................................................ int i; if( p==0 ) return 0; pNew = sqlite3DbMallocRaw(db, sizeof(*pNew) ); if( pNew==0 ) return 0; pNew->nId = pNew->nAlloc = p->nId; pNew->a = sqlite3DbMallocRaw(db, p->nId*sizeof(p->a[0]) ); if( pNew->a==0 ){ sqlite3_free(pNew); return 0; } for(i=0; i<p->nId; i++){ struct IdList_item *pNewItem = &pNew->a[i]; struct IdList_item *pOldItem = &p->a[i]; pNewItem->zName = sqlite3DbStrDup(db, pOldItem->zName); pNewItem->idx = pOldItem->idx; ................................................................................ pItem->zName = sqlite3NameFromToken(db, pName); pItem->pExpr = pExpr; } return pList; no_mem: /* Avoid leaking memory if malloc has failed. */ sqlite3ExprDelete(pExpr); sqlite3ExprListDelete(pList); return 0; } /* ** If the expression list pEList contains more than iLimit elements, ** leave an error message in pParse. */ ................................................................................ sqlite3ErrorMsg(pParse, "too many columns in %s", zObject); } } /* ** Delete an entire expression list. */ SQLITE_PRIVATE void sqlite3ExprListDelete(ExprList *pList){ int i; struct ExprList_item *pItem; if( pList==0 ) return; assert( pList->a!=0 || (pList->nExpr==0 && pList->nAlloc==0) ); assert( pList->nExpr<=pList->nAlloc ); for(pItem=pList->a, i=0; i<pList->nExpr; i++, pItem++){ sqlite3ExprDelete(pItem->pExpr); sqlite3_free(pItem->zName); } sqlite3_free(pList->a); sqlite3_free(pList); } /* ** Walk an expression tree. Call xFunc for each node visited. xFunc ** is called on the node before xFunc is called on the nodes children. ** ** The return value from xFunc determines whether the tree walk continues. ................................................................................ Expr *pDup, *pOrig; assert( pExpr->pLeft==0 && pExpr->pRight==0 ); assert( pExpr->pList==0 ); assert( pExpr->pSelect==0 ); pOrig = pEList->a[j].pExpr; if( !pNC->allowAgg && ExprHasProperty(pOrig, EP_Agg) ){ sqlite3ErrorMsg(pParse, "misuse of aliased aggregate %s", zAs); sqlite3_free(zCol); return 2; } pDup = sqlite3ExprDup(db, pOrig); if( pExpr->flags & EP_ExpCollate ){ pDup->pColl = pExpr->pColl; pDup->flags |= EP_ExpCollate; } if( pExpr->span.dyn ) sqlite3_free((char*)pExpr->span.z); if( pExpr->token.dyn ) sqlite3_free((char*)pExpr->token.z); memcpy(pExpr, pDup, sizeof(*pExpr)); sqlite3_free(pDup); cnt = 1; pMatch = 0; assert( zTab==0 && zDb==0 ); goto lookupname_end_2; } } } ................................................................................ ** case, we need to return right away and not make any changes to ** pExpr. ** ** Because no reference was made to outer contexts, the pNC->nRef ** fields are not changed in any context. */ if( cnt==0 && zTab==0 && pColumnToken->z[0]=='"' ){ sqlite3_free(zCol); return 0; } /* ** cnt==0 means there was not match. cnt>1 means there were two or ** more matches. Either way, we have an error. */ ................................................................................ assert( pMatch->iCursor==pExpr->iTable ); pMatch->colUsed |= ((Bitmask)1)<<n; } lookupname_end: /* Clean up and return */ sqlite3_free(zDb); sqlite3_free(zTab); sqlite3ExprDelete(pExpr->pLeft); pExpr->pLeft = 0; sqlite3ExprDelete(pExpr->pRight); pExpr->pRight = 0; pExpr->op = TK_COLUMN; lookupname_end_2: sqlite3_free(zCol); if( cnt==1 ){ assert( pNC!=0 ); sqlite3AuthRead(pParse, pExpr, pSchema, pNC->pSrcList); if( pMatch && !pMatch->pSelect ){ pExpr->pTab = pMatch->pTab; } /* Increment the nRef value on all name contexts from TopNC up to ................................................................................ sqlite3VdbeAddOp2(v, OP_Null, 0, dest.iParm); VdbeComment((v, "Init subquery result")); }else{ dest.eDest = SRT_Exists; sqlite3VdbeAddOp2(v, OP_Integer, 0, dest.iParm); VdbeComment((v, "Init EXISTS result")); } sqlite3ExprDelete(pSel->pLimit); pSel->pLimit = sqlite3PExpr(pParse, TK_INTEGER, 0, 0, &one); if( sqlite3Select(pParse, pSel, &dest, 0, 0, 0) ){ return; } pExpr->iColumn = dest.iParm; break; } ................................................................................ ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains C code routines that used to generate VDBE code ** that implements the ALTER TABLE command. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** The code in this file only exists if we are not omitting the ** ALTER TABLE logic from the build. */ #ifndef SQLITE_OMIT_ALTERTABLE ................................................................................ len = sqlite3GetToken(zCsr, &token); } while( token==TK_SPACE || token==TK_COMMENT ); assert( len>0 ); } while( token!=TK_LP && token!=TK_USING ); zRet = sqlite3MPrintf(db, "%.*s\"%w\"%s", tname.z - zSql, zSql, zTableName, tname.z+tname.n); sqlite3_result_text(context, zRet, -1, sqlite3_free); } } #ifndef SQLITE_OMIT_TRIGGER /* This function is used by SQL generated to implement the ** ALTER TABLE command. The first argument is the text of a CREATE TRIGGER ** statement. The second is a table name. The table name in the CREATE ................................................................................ } while( dist!=2 || (token!=TK_WHEN && token!=TK_FOR && token!=TK_BEGIN) ); /* Variable tname now contains the token that is the old table-name ** in the CREATE TRIGGER statement. */ zRet = sqlite3MPrintf(db, "%.*s\"%w\"%s", tname.z - zSql, zSql, zTableName, tname.z+tname.n); sqlite3_result_text(context, zRet, -1, sqlite3_free); } } #endif /* !SQLITE_OMIT_TRIGGER */ /* ** Register built-in functions used to help implement ALTER TABLE */ ................................................................................ for( pTrig=pTab->pTrigger; pTrig; pTrig=pTrig->pNext ){ if( pTrig->pSchema==pTempSchema ){ if( !zWhere ){ zWhere = sqlite3MPrintf(db, "name=%Q", pTrig->name); }else{ tmp = zWhere; zWhere = sqlite3MPrintf(db, "%s OR name=%Q", zWhere, pTrig->name); sqlite3_free(tmp); } } } } return zWhere; } ................................................................................ */ if( (zWhere=whereTempTriggers(pParse, pTab))!=0 ){ sqlite3NestedParse(pParse, "UPDATE sqlite_temp_master SET " "sql = sqlite_rename_trigger(sql, %Q), " "tbl_name = %Q " "WHERE %s;", zName, zName, zWhere); sqlite3_free(zWhere); } #endif /* Drop and reload the internal table schema. */ reloadTableSchema(pParse, pTab, zName); exit_rename_table: sqlite3SrcListDelete(pSrc); sqlite3_free(zName); } /* ** This function is called after an "ALTER TABLE ... ADD" statement ** has been parsed. Argument pColDef contains the text of the new ** column definition. ................................................................................ sqlite3NestedParse(pParse, "UPDATE \"%w\".%s SET " "sql = substr(sql,1,%d) || ', ' || %Q || substr(sql,%d) " "WHERE type = 'table' AND name = %Q", zDb, SCHEMA_TABLE(iDb), pNew->addColOffset, zCol, pNew->addColOffset+1, zTab ); sqlite3_free(zCol); } /* If the default value of the new column is NULL, then set the file ** format to 2. If the default value of the new column is not NULL, ** the file format becomes 3. */ sqlite3MinimumFileFormat(pParse, iDb, pDflt ? 3 : 2); ................................................................................ /* Put a copy of the Table struct in Parse.pNewTable for the ** sqlite3AddColumn() function and friends to modify. */ pNew = (Table*)sqlite3DbMallocZero(db, sizeof(Table)); if( !pNew ) goto exit_begin_add_column; pParse->pNewTable = pNew; pNew->nRef = 1; pNew->nCol = pTab->nCol; assert( pNew->nCol>0 ); nAlloc = (((pNew->nCol-1)/8)*8)+8; assert( nAlloc>=pNew->nCol && nAlloc%8==0 && nAlloc-pNew->nCol<8 ); pNew->aCol = (Column*)sqlite3DbMallocZero(db, sizeof(Column)*nAlloc); pNew->zName = sqlite3DbStrDup(db, pTab->zName); if( !pNew->aCol || !pNew->zName ){ ................................................................................ /* Begin a transaction and increment the schema cookie. */ sqlite3BeginWriteOperation(pParse, 0, iDb); v = sqlite3GetVdbe(pParse); if( !v ) goto exit_begin_add_column; sqlite3ChangeCookie(pParse, iDb); exit_begin_add_column: sqlite3SrcListDelete(pSrc); return; } #endif /* SQLITE_ALTER_TABLE */ /************** End of alter.c ***********************************************/ /************** Begin file analyze.c *****************************************/ /* ................................................................................ ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains code associated with the ANALYZE command. ** ** @(#) $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef SQLITE_OMIT_ANALYZE /* ** This routine generates code that opens the sqlite_stat1 table on cursor ** iStatCur. ** ................................................................................ iDb = sqlite3FindDb(db, pName1); if( iDb>=0 ){ analyzeDatabase(pParse, iDb); }else{ z = sqlite3NameFromToken(db, pName1); if( z ){ pTab = sqlite3LocateTable(pParse, 0, z, 0); sqlite3_free(z); if( pTab ){ analyzeTable(pParse, pTab); } } } }else{ /* Form 3: Analyze the fully qualified table name */ iDb = sqlite3TwoPartName(pParse, pName1, pName2, &pTableName); if( iDb>=0 ){ zDb = db->aDb[iDb].zName; z = sqlite3NameFromToken(db, pTableName); if( z ){ pTab = sqlite3LocateTable(pParse, 0, z, zDb); sqlite3_free(z); if( pTab ){ analyzeTable(pParse, pTab); } } } } } ................................................................................ /* Load new statistics out of the sqlite_stat1 table */ zSql = sqlite3MPrintf(db, "SELECT idx, stat FROM %Q.sqlite_stat1", sInfo.zDatabase); (void)sqlite3SafetyOff(db); rc = sqlite3_exec(db, zSql, analysisLoader, &sInfo, 0); (void)sqlite3SafetyOn(db); sqlite3_free(zSql); return rc; } #endif /* SQLITE_OMIT_ANALYZE */ /************** End of analyze.c *********************************************/ ................................................................................ ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains code used to implement the ATTACH and DETACH commands. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef SQLITE_OMIT_ATTACH /* ** Resolve an expression that was part of an ATTACH or DETACH statement. This ** is slightly different from resolving a normal SQL expression, because simple ** identifiers are treated as strings, not possible column names or aliases. ................................................................................ return; attach_error: /* Return an error if we get here */ if( zErrDyn ){ sqlite3_result_error(context, zErrDyn, -1); sqlite3_free(zErrDyn); }else{ zErr[sizeof(zErr)-1] = 0; sqlite3_result_error(context, zErr, -1); } if( rc ) sqlite3_result_error_code(context, rc); } ................................................................................ assert( db->mallocFailed || pAuthArg ); if( pAuthArg ){ char *zAuthArg = sqlite3NameFromToken(db, &pAuthArg->span); if( !zAuthArg ){ goto attach_end; } rc = sqlite3AuthCheck(pParse, type, zAuthArg, 0, 0); sqlite3_free(zAuthArg); if(rc!=SQLITE_OK ){ goto attach_end; } } #endif /* SQLITE_OMIT_AUTHORIZATION */ memset(&sName, 0, sizeof(NameContext)); ................................................................................ ** statement only). For DETACH, set it to false (expire all existing ** statements). */ sqlite3VdbeAddOp1(v, OP_Expire, (type==SQLITE_ATTACH)); } attach_end: sqlite3ExprDelete(pFilename); sqlite3ExprDelete(pDbname); sqlite3ExprDelete(pKey); } /* ** Called by the parser to compile a DETACH statement. ** ** DETACH pDbname */ ................................................................................ ** ************************************************************************* ** This file contains code used to implement the sqlite3_set_authorizer() ** API. This facility is an optional feature of the library. Embedded ** systems that do not need this facility may omit it by recompiling ** the library with -DSQLITE_OMIT_AUTHORIZATION=1 ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** All of the code in this file may be omitted by defining a single ** macro. */ #ifndef SQLITE_OMIT_AUTHORIZATION ................................................................................ ** CREATE INDEX ** DROP INDEX ** creating ID lists ** BEGIN TRANSACTION ** COMMIT ** ROLLBACK ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** This routine is called when a new SQL statement is beginning to ** be parsed. Initialize the pParse structure as needed. */ SQLITE_PRIVATE void sqlite3BeginParse(Parse *pParse, int explainFlag){ ................................................................................ sqlite3 *db; Vdbe *v; db = pParse->db; if( db->mallocFailed ) return; if( pParse->nested ) return; if( pParse->nErr ) return; if( !pParse->pVdbe ){ if( pParse->rc==SQLITE_OK && pParse->nErr ){ pParse->rc = SQLITE_ERROR; return; } } /* Begin by generating some termination code at the end of the ** vdbe program */ v = sqlite3GetVdbe(pParse); if( v ){ sqlite3VdbeAddOp0(v, OP_Halt); ................................................................................ ** INSERT, UPDATE, and DELETE operations against SQLITE_MASTER. Use ** care if you decide to try to use this routine for some other purposes. */ SQLITE_PRIVATE void sqlite3NestedParse(Parse *pParse, const char *zFormat, ...){ va_list ap; char *zSql; char *zErrMsg = 0; # define SAVE_SZ (sizeof(Parse) - offsetof(Parse,nVar)) char saveBuf[SAVE_SZ]; if( pParse->nErr ) return; assert( pParse->nested<10 ); /* Nesting should only be of limited depth */ va_start(ap, zFormat); zSql = sqlite3VMPrintf(pParse->db, zFormat, ap); va_end(ap); if( zSql==0 ){ pParse->db->mallocFailed = 1; return; /* A malloc must have failed */ } pParse->nested++; memcpy(saveBuf, &pParse->nVar, SAVE_SZ); memset(&pParse->nVar, 0, SAVE_SZ); sqlite3RunParser(pParse, zSql, &zErrMsg); sqlite3_free(zErrMsg); sqlite3_free(zSql); memcpy(&pParse->nVar, saveBuf, SAVE_SZ); pParse->nested--; } /* ** Locate the in-memory structure that describes a particular database ** table given the name of that table and (optionally) the name of the ................................................................................ return p; } /* ** Reclaim the memory used by an index */ static void freeIndex(Index *p){ sqlite3_free(p->zColAff); sqlite3_free(p); } /* ** Remove the given index from the index hash table, and free ** its memory structures. ** ** The index is removed from the database hash tables but ................................................................................ if( pDb->pAux && pDb->xFreeAux ) pDb->xFreeAux(pDb->pAux); pDb->pAux = 0; } } for(i=j=2; i<db->nDb; i++){ struct Db *pDb = &db->aDb[i]; if( pDb->pBt==0 ){ sqlite3_free(pDb->zName); pDb->zName = 0; continue; } if( j<i ){ db->aDb[j] = db->aDb[i]; } j++; } memset(&db->aDb[j], 0, (db->nDb-j)*sizeof(db->aDb[j])); db->nDb = j; if( db->nDb<=2 && db->aDb!=db->aDbStatic ){ memcpy(db->aDbStatic, db->aDb, 2*sizeof(db->aDb[0])); sqlite3_free(db->aDb); db->aDb = db->aDbStatic; } } /* ** This routine is called when a commit occurs. */ ................................................................................ /* ** Clear the column names from a table or view. */ static void sqliteResetColumnNames(Table *pTable){ int i; Column *pCol; assert( pTable!=0 ); if( (pCol = pTable->aCol)!=0 ){ for(i=0; i<pTable->nCol; i++, pCol++){ sqlite3_free(pCol->zName); sqlite3ExprDelete(pCol->pDflt); sqlite3_free(pCol->zType); sqlite3_free(pCol->zColl); } sqlite3_free(pTable->aCol); } pTable->aCol = 0; pTable->nCol = 0; } /* ** Remove the memory data structures associated with the given ................................................................................ ** foreign keys from the sqlite.aFKey hash table. But it does destroy ** memory structures of the indices and foreign keys associated with ** the table. */ SQLITE_PRIVATE void sqlite3DeleteTable(Table *pTable){ Index *pIndex, *pNext; FKey *pFKey, *pNextFKey; if( pTable==0 ) return; /* Do not delete the table until the reference count reaches zero. */ pTable->nRef--; if( pTable->nRef>0 ){ return; } assert( pTable->nRef==0 ); ................................................................................ /* Delete all foreign keys associated with this table. The keys ** should have already been unlinked from the pSchema->aFKey hash table */ for(pFKey=pTable->pFKey; pFKey; pFKey=pNextFKey){ pNextFKey = pFKey->pNextFrom; assert( sqlite3HashFind(&pTable->pSchema->aFKey, pFKey->zTo, strlen(pFKey->zTo)+1)!=pFKey ); sqlite3_free(pFKey); } #endif /* Delete the Table structure itself. */ sqliteResetColumnNames(pTable); sqlite3_free(pTable->zName); sqlite3_free(pTable->zColAff); sqlite3SelectDelete(pTable->pSelect); #ifndef SQLITE_OMIT_CHECK sqlite3ExprDelete(pTable->pCheck); #endif sqlite3VtabClear(pTable); sqlite3_free(pTable); } /* ** Unlink the given table from the hash tables and the delete the ** table structure with all its indices and foreign keys. */ SQLITE_PRIVATE void sqlite3UnlinkAndDeleteTable(sqlite3 *db, int iDb, const char *zTabName){ ................................................................................ n = strlen(zName); for(i=(db->nDb-1), pDb=&db->aDb[i]; i>=0; i--, pDb--){ if( (!OMIT_TEMPDB || i!=1 ) && n==strlen(pDb->zName) && 0==sqlite3StrICmp(pDb->zName, zName) ){ break; } } sqlite3_free(zName); } return i; } /* The table or view or trigger name is passed to this routine via tokens ** pName1 and pName2. If the table name was fully qualified, for example: ** ................................................................................ pParse->nErr++; goto begin_table_error; } pTable->zName = zName; pTable->iPKey = -1; pTable->pSchema = db->aDb[iDb].pSchema; pTable->nRef = 1; if( pParse->pNewTable ) sqlite3DeleteTable(pParse->pNewTable); pParse->pNewTable = pTable; /* If this is the magic sqlite_sequence table used by autoincrement, ** then record a pointer to this table in the main database structure ** so that INSERT can find the table easily. */ ................................................................................ } /* Normal (non-error) return. */ return; /* If an error occurs, we jump here */ begin_table_error: sqlite3_free(zName); return; } /* ** This macro is used to compare two strings in a case-insensitive manner. ** It is slightly faster than calling sqlite3StrICmp() directly, but ** produces larger code. ................................................................................ } #endif z = sqlite3NameFromToken(pParse->db, pName); if( z==0 ) return; for(i=0; i<p->nCol; i++){ if( STRICMP(z, p->aCol[i].zName) ){ sqlite3ErrorMsg(pParse, "duplicate column name: %s", z); sqlite3_free(z); return; } } if( (p->nCol & 0x7)==0 ){ Column *aNew; aNew = sqlite3DbRealloc(pParse->db,p->aCol,(p->nCol+8)*sizeof(p->aCol[0])); if( aNew==0 ){ sqlite3_free(z); return; } p->aCol = aNew; } pCol = &p->aCol[p->nCol]; memset(pCol, 0, sizeof(p->aCol[0])); pCol->zName = z; ................................................................................ ** that contains the typename of the column and store that string ** in zType. */ SQLITE_PRIVATE void sqlite3AddColumnType(Parse *pParse, Token *pType){ Table *p; int i; Column *pCol; if( (p = pParse->pNewTable)==0 ) return; i = p->nCol-1; if( i<0 ) return; pCol = &p->aCol[i]; sqlite3_free(pCol->zType); pCol->zType = sqlite3NameFromToken(pParse->db, pType); pCol->affinity = sqlite3AffinityType(pType); } /* ** The expression is the default value for the most recently added column ** of the table currently under construction. ** ................................................................................ ** ** This routine is called by the parser while in the middle of ** parsing a CREATE TABLE statement. */ SQLITE_PRIVATE void sqlite3AddDefaultValue(Parse *pParse, Expr *pExpr){ Table *p; Column *pCol; if( (p = pParse->pNewTable)!=0 ){ pCol = &(p->aCol[p->nCol-1]); if( !sqlite3ExprIsConstantOrFunction(pExpr) ){ sqlite3ErrorMsg(pParse, "default value of column [%s] is not constant", pCol->zName); }else{ Expr *pCopy; sqlite3 *db = pParse->db; sqlite3ExprDelete(pCol->pDflt); pCol->pDflt = pCopy = sqlite3ExprDup(db, pExpr); if( pCopy ){ sqlite3TokenCopy(db, &pCopy->span, &pExpr->span); } } } sqlite3ExprDelete(pExpr); } /* ** Designate the PRIMARY KEY for the table. pList is a list of names ** of columns that form the primary key. If pList is NULL, then the ** most recently added column of the table is the primary key. ** ................................................................................ #endif }else{ sqlite3CreateIndex(pParse, 0, 0, 0, pList, onError, 0, 0, sortOrder, 0); pList = 0; } primary_key_exit: sqlite3ExprListDelete(pList); return; } /* ** Add a new CHECK constraint to the table currently under construction. */ SQLITE_PRIVATE void sqlite3AddCheckConstraint( Parse *pParse, /* Parsing context */ Expr *pCheckExpr /* The check expression */ ){ #ifndef SQLITE_OMIT_CHECK Table *pTab = pParse->pNewTable; sqlite3 *db = pParse->db; if( pTab && !IN_DECLARE_VTAB ){ /* The CHECK expression must be duplicated so that tokens refer ** to malloced space and not the (ephemeral) text of the CREATE TABLE ** statement */ pTab->pCheck = sqlite3ExprAnd(db, pTab->pCheck, sqlite3ExprDup(db, pCheckExpr)); } #endif sqlite3ExprDelete(pCheckExpr); } /* ** Set the collation function of the most recently parsed table column ** to the CollSeq given. */ SQLITE_PRIVATE void sqlite3AddCollateType(Parse *pParse, Token *pToken){ Table *p; int i; char *zColl; /* Dequoted name of collation sequence */ if( (p = pParse->pNewTable)==0 ) return; i = p->nCol-1; zColl = sqlite3NameFromToken(pParse->db, pToken); if( !zColl ) return; if( sqlite3LocateCollSeq(pParse, zColl, -1) ){ Index *pIdx; p->aCol[i].zColl = zColl; /* If the column is declared as "<name> PRIMARY KEY COLLATE <type>", ................................................................................ for(pIdx=p->pIndex; pIdx; pIdx=pIdx->pNext){ assert( pIdx->nColumn==1 ); if( pIdx->aiColumn[0]==i ){ pIdx->azColl[0] = p->aCol[i].zColl; } } }else{ sqlite3_free(zColl); } } /* ** This function returns the collation sequence for database native text ** encoding identified by the string zName, length nName. ** ................................................................................ ** a schema-lock excludes all other database users, the write-lock would ** be redundant. */ if( pSelect ){ SelectDest dest; Table *pSelTab; sqlite3VdbeAddOp3(v, OP_OpenWrite, 1, pParse->regRoot, iDb); sqlite3VdbeChangeP5(v, 1); pParse->nTab = 2; sqlite3SelectDestInit(&dest, SRT_Table, 1); sqlite3Select(pParse, pSelect, &dest, 0, 0, 0); sqlite3VdbeAddOp1(v, OP_Close, 1); if( pParse->nErr==0 ){ ................................................................................ zType, p->zName, p->zName, pParse->regRoot, zStmt, pParse->regRowid ); sqlite3_free(zStmt); sqlite3ChangeCookie(pParse, iDb); #ifndef SQLITE_OMIT_AUTOINCREMENT /* Check to see if we need to create an sqlite_sequence table for ** keeping track of autoincrement keys. */ if( p->autoInc ){ ................................................................................ DbFixer sFix; Token *pName; int iDb; sqlite3 *db = pParse->db; if( pParse->nVar>0 ){ sqlite3ErrorMsg(pParse, "parameters are not allowed in views"); sqlite3SelectDelete(pSelect); return; } sqlite3StartTable(pParse, pName1, pName2, isTemp, 1, 0, noErr); p = pParse->pNewTable; if( p==0 || pParse->nErr ){ sqlite3SelectDelete(pSelect); return; } sqlite3TwoPartName(pParse, pName1, pName2, &pName); iDb = sqlite3SchemaToIndex(db, p->pSchema); if( sqlite3FixInit(&sFix, pParse, iDb, "view", pName) && sqlite3FixSelect(&sFix, pSelect) ){ sqlite3SelectDelete(pSelect); return; } /* Make a copy of the entire SELECT statement that defines the view. ** This will force all the Expr.token.z values to be dynamically ** allocated rather than point to the input string - which means that ** they will persist after the current sqlite3_exec() call returns. */ p->pSelect = sqlite3SelectDup(db, pSelect); sqlite3SelectDelete(pSelect); if( db->mallocFailed ){ return; } if( !db->init.busy ){ sqlite3ViewGetColumnNames(pParse, p); } ................................................................................ pSelTab->aCol = 0; sqlite3DeleteTable(pSelTab); pTable->pSchema->flags |= DB_UnresetViews; }else{ pTable->nCol = 0; nErr++; } sqlite3SelectDelete(pSel); } else { nErr++; } #endif /* SQLITE_OMIT_VIEW */ return nErr; } #endif /* !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_VIRTUALTABLE) */ ................................................................................ } sqlite3VdbeAddOp4(v, OP_DropTable, iDb, 0, 0, pTab->zName, 0); sqlite3ChangeCookie(pParse, iDb); } sqliteViewResetAll(db, iDb); exit_drop_table: sqlite3SrcListDelete(pName); } /* ** This routine is called to create a new foreign key on the table ** currently under construction. pFromCol determines which columns ** in the current table point to the foreign key. If pFromCol==0 then ** connect the key to the last column inserted. pTo is the name of ................................................................................ #ifndef SQLITE_OMIT_FOREIGN_KEY FKey *pFKey = 0; Table *p = pParse->pNewTable; int nByte; int i; int nCol; char *z; assert( pTo!=0 ); if( p==0 || pParse->nErr || IN_DECLARE_VTAB ) goto fk_end; if( pFromCol==0 ){ int iCol = p->nCol-1; if( iCol<0 ) goto fk_end; if( pToCol && pToCol->nExpr!=1 ){ sqlite3ErrorMsg(pParse, "foreign key on %s" " should reference only one column of table %T", ................................................................................ } nByte = sizeof(*pFKey) + nCol*sizeof(pFKey->aCol[0]) + pTo->n + 1; if( pToCol ){ for(i=0; i<pToCol->nExpr; i++){ nByte += strlen(pToCol->a[i].zName) + 1; } } pFKey = sqlite3DbMallocZero(pParse->db, nByte ); if( pFKey==0 ){ goto fk_end; } pFKey->pFrom = p; pFKey->pNextFrom = p->pFKey; z = (char*)&pFKey[1]; pFKey->aCol = (struct sColMap*)z; ................................................................................ /* Link the foreign key to the table as the last step. */ p->pFKey = pFKey; pFKey = 0; fk_end: sqlite3_free(pFKey); #endif /* !defined(SQLITE_OMIT_FOREIGN_KEY) */ sqlite3ExprListDelete(pFromCol); sqlite3ExprListDelete(pToCol); } /* ** This routine is called when an INITIALLY IMMEDIATE or INITIALLY DEFERRED ** clause is seen as part of a foreign key definition. The isDeferred ** parameter is 1 for INITIALLY DEFERRED and 0 for INITIALLY IMMEDIATE. ** The behavior of the most recently created foreign key is adjusted ................................................................................ "INSERT INTO %Q.%s VALUES('index',%Q,%Q,#%d,%Q);", db->aDb[iDb].zName, SCHEMA_TABLE(iDb), pIndex->zName, pTab->zName, iMem, zStmt ); sqlite3_free(zStmt); /* Fill the index with data and reparse the schema. Code an OP_Expire ** to invalidate all pre-compiled statements. */ if( pTblName ){ sqlite3RefillIndex(pParse, pIndex, iMem); sqlite3ChangeCookie(pParse, iDb); ................................................................................ } /* Clean up before exiting */ exit_create_index: if( pIndex ){ freeIndex(pIndex); } sqlite3ExprListDelete(pList); sqlite3SrcListDelete(pTblName); sqlite3_free(zName); return; } /* ** Generate code to make sure the file format number is at least minFormat. ** The generated code will increase the file format number if necessary. */ ................................................................................ } sqlite3ChangeCookie(pParse, iDb); destroyRootPage(pParse, pIndex->tnum, iDb); sqlite3VdbeAddOp4(v, OP_DropIndex, iDb, 0, 0, pIndex->zName, 0); } exit_drop_index: sqlite3SrcListDelete(pName); } /* ** pArray is a pointer to an array of objects. Each object in the ** array is szEntry bytes in size. This routine allocates a new ** object on the end of the array. ** ................................................................................ sizeof(pList->a[0]), 5, &pList->nId, &pList->nAlloc, &i ); if( i<0 ){ sqlite3IdListDelete(pList); return 0; } pList->a[i].zName = sqlite3NameFromToken(db, pToken); return pList; } /* ** Delete an IdList. */ SQLITE_PRIVATE void sqlite3IdListDelete(IdList *pList){ int i; if( pList==0 ) return; for(i=0; i<pList->nId; i++){ sqlite3_free(pList->a[i].zName); } sqlite3_free(pList->a); sqlite3_free(pList); } /* ** Return the index in pList of the identifier named zId. Return -1 ** if not found. */ SQLITE_PRIVATE int sqlite3IdListIndex(IdList *pList, const char *zName){ ................................................................................ } if( pList->nSrc>=pList->nAlloc ){ SrcList *pNew; pList->nAlloc *= 2; pNew = sqlite3DbRealloc(db, pList, sizeof(*pList) + (pList->nAlloc-1)*sizeof(pList->a[0]) ); if( pNew==0 ){ sqlite3SrcListDelete(pList); return 0; } pList = pNew; } pItem = &pList->a[pList->nSrc]; memset(pItem, 0, sizeof(pList->a[0])); if( pDatabase && pDatabase->z==0 ){ ................................................................................ } } } /* ** Delete an entire SrcList including all its substructure. */ SQLITE_PRIVATE void sqlite3SrcListDelete(SrcList *pList){ int i; struct SrcList_item *pItem; if( pList==0 ) return; for(pItem=pList->a, i=0; i<pList->nSrc; i++, pItem++){ sqlite3_free(pItem->zDatabase); sqlite3_free(pItem->zName); sqlite3_free(pItem->zAlias); sqlite3DeleteTable(pItem->pTab); sqlite3SelectDelete(pItem->pSelect); sqlite3ExprDelete(pItem->pOn); sqlite3IdListDelete(pItem->pUsing); } sqlite3_free(pList); } /* ** This routine is called by the parser to add a new term to the ** end of a growing FROM clause. The "p" parameter is the part of ** the FROM clause that has already been constructed. "p" is NULL ** if this is the first term of the FROM clause. pTable and pDatabase ................................................................................ Expr *pOn, /* The ON clause of a join */ IdList *pUsing /* The USING clause of a join */ ){ struct SrcList_item *pItem; sqlite3 *db = pParse->db; p = sqlite3SrcListAppend(db, p, pTable, pDatabase); if( p==0 || p->nSrc==0 ){ sqlite3ExprDelete(pOn); sqlite3IdListDelete(pUsing); sqlite3SelectDelete(pSubquery); return p; } pItem = &p->a[p->nSrc-1]; if( pAlias && pAlias->n ){ pItem->zAlias = sqlite3NameFromToken(db, pAlias); } pItem->pSelect = pSubquery; ................................................................................ assert( pName1->z ); zColl = sqlite3NameFromToken(pParse->db, pName1); if( !zColl ) return; pColl = sqlite3FindCollSeq(db, ENC(db), zColl, -1, 0); if( pColl ){ if( zColl ){ reindexDatabases(pParse, zColl); sqlite3_free(zColl); } return; } sqlite3_free(zColl); } iDb = sqlite3TwoPartName(pParse, pName1, pName2, &pObjName); if( iDb<0 ) return; z = sqlite3NameFromToken(db, pObjName); if( z==0 ) return; zDb = db->aDb[iDb].zName; pTab = sqlite3FindTable(db, z, zDb); if( pTab ){ reindexTable(pParse, pTab, 0); sqlite3_free(z); return; } pIndex = sqlite3FindIndex(db, z, zDb); sqlite3_free(z); if( pIndex ){ sqlite3BeginWriteOperation(pParse, 0, iDb); sqlite3RefillIndex(pParse, pIndex, -1); return; } sqlite3ErrorMsg(pParse, "unable to identify the object to be reindexed"); } ................................................................................ #endif /* ** Return a dynamicly allocated KeyInfo structure that can be used ** with OP_OpenRead or OP_OpenWrite to access database index pIdx. ** ** If successful, a pointer to the new structure is returned. In this case ** the caller is responsible for calling sqlite3_free() on the returned ** pointer. If an error occurs (out of memory or missing collation ** sequence), NULL is returned and the state of pParse updated to reflect ** the error. */ SQLITE_PRIVATE KeyInfo *sqlite3IndexKeyinfo(Parse *pParse, Index *pIdx){ int i; int nCol = pIdx->nColumn; int nBytes = sizeof(KeyInfo) + (nCol-1)*sizeof(CollSeq*) + nCol; KeyInfo *pKey = (KeyInfo *)sqlite3DbMallocZero(pParse->db, nBytes); if( pKey ){ pKey->db = pParse->db; pKey->aSortOrder = (u8 *)&(pKey->aColl[nCol]); assert( &pKey->aSortOrder[nCol]==&(((u8 *)pKey)[nBytes]) ); for(i=0; i<nCol; i++){ char *zColl = pIdx->azColl[i]; ................................................................................ pKey->aColl[i] = sqlite3LocateCollSeq(pParse, zColl, -1); pKey->aSortOrder[i] = pIdx->aSortOrder[i]; } pKey->nField = nCol; } if( pParse->nErr ){ sqlite3_free(pKey); pKey = 0; } return pKey; } /************** End of build.c ***********************************************/ /************** Begin file callback.c ****************************************/ ................................................................................ ** May you share freely, never taking more than you give. ** ************************************************************************* ** ** This file contains functions used to access the internal hash tables ** of user defined functions and collation sequences. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** Invoke the 'collation needed' callback to request a collation sequence ** in the database text encoding of name zName, length nName. ** If the collation sequence ................................................................................ static void callCollNeeded(sqlite3 *db, const char *zName, int nName){ assert( !db->xCollNeeded || !db->xCollNeeded16 ); if( nName<0 ) nName = sqlite3Strlen(db, zName); if( db->xCollNeeded ){ char *zExternal = sqlite3DbStrNDup(db, zName, nName); if( !zExternal ) return; db->xCollNeeded(db->pCollNeededArg, db, (int)ENC(db), zExternal); sqlite3_free(zExternal); } #ifndef SQLITE_OMIT_UTF16 if( db->xCollNeeded16 ){ char const *zExternal; sqlite3_value *pTmp = sqlite3ValueNew(db); sqlite3ValueSetStr(pTmp, nName, zName, SQLITE_UTF8, SQLITE_STATIC); zExternal = sqlite3ValueText(pTmp, SQLITE_UTF16NATIVE); ................................................................................ /* If a malloc() failure occured in sqlite3HashInsert(), it will ** return the pColl pointer to be deleted (because it wasn't added ** to the hash table). */ assert( pDel==0 || pDel==pColl ); if( pDel!=0 ){ db->mallocFailed = 1; sqlite3_free(pDel); pColl = 0; } } } return pColl; } ................................................................................ pBest->nArg = nArg; pBest->pNext = pFirst; pBest->iPrefEnc = enc; memcpy(pBest->zName, zName, nName); pBest->zName[nName] = 0; if( pBest==sqlite3HashInsert(&db->aFunc,pBest->zName,nName,(void*)pBest) ){ db->mallocFailed = 1; sqlite3_free(pBest); return 0; } } if( pBest && (pBest->xStep || pBest->xFunc || createFlag) ){ return pBest; } return 0; } /* ** Free all resources held by the schema structure. The void* argument points ** at a Schema struct. This function does not call sqlite3_free() on the ** pointer itself, it just cleans up subsiduary resources (i.e. the contents ** of the schema hash tables). ** ** The Schema.cache_size variable is not cleared. */ SQLITE_PRIVATE void sqlite3SchemaFree(void *p){ Hash temp1; ................................................................................ temp1 = pSchema->tblHash; temp2 = pSchema->trigHash; sqlite3HashInit(&pSchema->trigHash, SQLITE_HASH_STRING, 0); sqlite3HashClear(&pSchema->aFKey); sqlite3HashClear(&pSchema->idxHash); for(pElem=sqliteHashFirst(&temp2); pElem; pElem=sqliteHashNext(pElem)){ sqlite3DeleteTrigger((Trigger*)sqliteHashData(pElem)); } sqlite3HashClear(&temp2); sqlite3HashInit(&pSchema->tblHash, SQLITE_HASH_STRING, 0); for(pElem=sqliteHashFirst(&temp1); pElem; pElem=sqliteHashNext(pElem)){ Table *pTab = sqliteHashData(pElem); sqlite3DeleteTable(pTab); } ................................................................................ ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains C code routines that are called by the parser ** in order to generate code for DELETE FROM statements. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** Look up every table that is named in pSrc. If any table is not found, ** add an error message to pParse->zErrMsg and return NULL. If all tables ** are found, return a pointer to the last table. */ ................................................................................ pWhere = sqlite3ExprDup(db, pWhere); pFrom = sqlite3SrcListAppendFromTerm(pParse, 0, 0, 0, 0, pDup, 0, 0); pDup = sqlite3SelectNew(pParse, 0, pFrom, pWhere, 0, 0, 0, 0, 0, 0); } sqlite3SelectDestInit(&dest, SRT_EphemTab, iCur); sqlite3Select(pParse, pDup, &dest, 0, 0, 0); sqlite3SelectDelete(pDup); } #endif /* !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER) */ /* ** Generate code for a DELETE FROM statement. ** ................................................................................ sqlite3VdbeAddOp2(v, OP_ResultRow, memCnt, 1); sqlite3VdbeSetNumCols(v, 1); sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "rows deleted", P4_STATIC); } delete_from_cleanup: sqlite3AuthContextPop(&sContext); sqlite3SrcListDelete(pTabList); sqlite3ExprDelete(pWhere); return; } /* ** This routine generates VDBE code that causes a single row of a ** single table to be deleted. ** ................................................................................ ** This file contains the C functions that implement various SQL ** functions of SQLite. ** ** There is only one exported symbol in this file - the function ** sqliteRegisterBuildinFunctions() found at the bottom of the file. ** All other code has file scope. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** Return the collating function associated with a function. */ static CollSeq *sqlite3GetFuncCollSeq(sqlite3_context *context){ ................................................................................ zOut[j++] = zStr[i]; }else{ u8 *zOld; sqlite3 *db = sqlite3_context_db_handle(context); nOut += nRep - nPattern; if( nOut>=db->aLimit[SQLITE_LIMIT_LENGTH] ){ sqlite3_result_error_toobig(context); sqlite3_free(zOut); return; } zOld = zOut; zOut = sqlite3_realloc(zOut, (int)nOut); if( zOut==0 ){ sqlite3_result_error_nomem(context); sqlite3_free(zOld); return; } memcpy(&zOut[j], zRep, nRep); j += nRep; i += nPattern-1; } } ................................................................................ ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains C code routines that are called by the parser ** to handle INSERT statements in SQLite. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** Set P4 of the most recently inserted opcode to a column affinity ** string for index pIdx. A column affinity string has one character ** for each column in the table, according to the affinity of the column: ** ................................................................................ ** The column affinity string will eventually be deleted by ** sqliteDeleteIndex() when the Index structure itself is cleaned ** up. */ int n; Table *pTab = pIdx->pTable; sqlite3 *db = sqlite3VdbeDb(v); pIdx->zColAff = (char *)sqlite3DbMallocRaw(db, pIdx->nColumn+2); if( !pIdx->zColAff ){ return; } for(n=0; n<pIdx->nColumn; n++){ pIdx->zColAff[n] = pTab->aCol[pIdx->aiColumn[n]].affinity; } pIdx->zColAff[n++] = SQLITE_AFF_NONE; pIdx->zColAff[n] = 0; ................................................................................ ** sqlite3DeleteTable() when the Table structure itself is cleaned up. */ if( !pTab->zColAff ){ char *zColAff; int i; sqlite3 *db = sqlite3VdbeDb(v); zColAff = (char *)sqlite3DbMallocRaw(db, pTab->nCol+1); if( !zColAff ){ return; } for(i=0; i<pTab->nCol; i++){ zColAff[i] = pTab->aCol[i].affinity; } zColAff[pTab->nCol] = '\0'; ................................................................................ if( db->flags & SQLITE_CountRows && pParse->nested==0 && !pParse->trigStack ){ sqlite3VdbeAddOp2(v, OP_ResultRow, regRowCount, 1); sqlite3VdbeSetNumCols(v, 1); sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "rows inserted", P4_STATIC); } insert_cleanup: sqlite3SrcListDelete(pTabList); sqlite3ExprListDelete(pList); sqlite3SelectDelete(pSelect); sqlite3IdListDelete(pColumn); sqlite3_free(aRegIdx); } /* ** Generate code to do constraint checks prior to an INSERT or an UPDATE. ** ** The input is a range of consecutive registers as follows: ** ................................................................................ ** ************************************************************************* ** Main file for the SQLite library. The routines in this file ** implement the programmer interface to the library. Routines in ** other files are for internal use by SQLite and should not be ** accessed by users of the library. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** Execute SQL code. Return one of the SQLITE_ success/failure ** codes. Also write an error message into memory obtained from ** malloc() and make *pzErrMsg point to that message. ................................................................................ azCols = sqlite3DbMallocZero(db, 2*nCol*sizeof(const char*) + 1); if( azCols==0 ){ goto exec_out; } } for(i=0; i<nCol; i++){ azCols[i] = (char *)sqlite3_column_name(pStmt, i); if( !azCols[i] ){ db->mallocFailed = 1; goto exec_out; } } nCallback++; } if( rc==SQLITE_ROW ){ azVals = &azCols[nCol]; for(i=0; i<nCol; i++){ azVals[i] = (char *)sqlite3_column_text(pStmt, i); ................................................................................ zSql = zLeftover; while( isspace((unsigned char)zSql[0]) ) zSql++; } break; } } sqlite3_free(azCols); azCols = 0; } exec_out: if( pStmt ) sqlite3_finalize(pStmt); if( azCols ) sqlite3_free(azCols); rc = sqlite3ApiExit(db, rc); if( rc!=SQLITE_OK && rc==sqlite3_errcode(db) && pzErrMsg ){ int nErrMsg = 1 + strlen(sqlite3_errmsg(db)); *pzErrMsg = sqlite3Malloc(nErrMsg); if( *pzErrMsg ){ memcpy(*pzErrMsg, sqlite3_errmsg(db), nErrMsg); ................................................................................ ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains code used to dynamically load extensions into ** the SQLite library. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef SQLITE_CORE #define SQLITE_CORE 1 /* Disable the API redefinition in sqlite3ext.h */ #endif /************** Include sqlite3ext.h in the middle of loadext.c **************/ /************** Begin file sqlite3ext.h **************************************/ ................................................................................ ************************************************************************* ** This header file defines the SQLite interface for use by ** shared libraries that want to be imported as extensions into ** an SQLite instance. Shared libraries that intend to be loaded ** as extensions by SQLite should #include this file instead of ** sqlite3.h. ** ** @(#) $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef _SQLITE3EXT_H_ #define _SQLITE3EXT_H_ typedef struct sqlite3_api_routines sqlite3_api_routines; /* ................................................................................ ** default entry point name (sqlite3_extension_init) is used. Use ** of the default name is recommended. ** ** Return SQLITE_OK on success and SQLITE_ERROR if something goes wrong. ** ** If an error occurs and pzErrMsg is not 0, then fill *pzErrMsg with ** error message text. The calling function should free this memory ** by calling sqlite3_free(). */ static int sqlite3LoadExtension( sqlite3 *db, /* Load the extension into this database connection */ const char *zFile, /* Name of the shared library containing extension */ const char *zProc, /* Entry point. Use "sqlite3_extension_init" if 0 */ char **pzErrMsg /* Put error message here if not 0 */ ){ ................................................................................ if( handle==0 ){ if( pzErrMsg ){ char zErr[256]; zErr[sizeof(zErr)-1] = '\0'; sqlite3_snprintf(sizeof(zErr)-1, zErr, "unable to open shared library [%s]", zFile); sqlite3OsDlError(pVfs, sizeof(zErr)-1, zErr); *pzErrMsg = sqlite3DbStrDup(db, zErr); } return SQLITE_ERROR; } xInit = (int(*)(sqlite3*,char**,const sqlite3_api_routines*)) sqlite3OsDlSym(pVfs, handle, zProc); if( xInit==0 ){ if( pzErrMsg ){ char zErr[256]; zErr[sizeof(zErr)-1] = '\0'; sqlite3_snprintf(sizeof(zErr)-1, zErr, "no entry point [%s] in shared library [%s]", zProc,zFile); sqlite3OsDlError(pVfs, sizeof(zErr)-1, zErr); *pzErrMsg = sqlite3DbStrDup(db, zErr); sqlite3OsDlClose(pVfs, handle); } return SQLITE_ERROR; }else if( xInit(db, &zErrmsg, &sqlite3Apis) ){ if( pzErrMsg ){ *pzErrMsg = sqlite3_mprintf("error during initialization: %s", zErrmsg); } sqlite3_free(zErrmsg); sqlite3OsDlClose(pVfs, handle); return SQLITE_ERROR; } /* Append the new shared library handle to the db->aExtension array. */ db->nExtension++; aHandle = sqlite3DbMallocZero(db, sizeof(handle)*db->nExtension); if( aHandle==0 ){ return SQLITE_NOMEM; } if( db->nExtension>0 ){ memcpy(aHandle, db->aExtension, sizeof(handle)*(db->nExtension-1)); } sqlite3_free(db->aExtension); db->aExtension = aHandle; db->aExtension[db->nExtension-1] = handle; return SQLITE_OK; } SQLITE_API int sqlite3_load_extension( sqlite3 *db, /* Load the extension into this database connection */ const char *zFile, /* Name of the shared library containing extension */ const char *zProc, /* Entry point. Use "sqlite3_extension_init" if 0 */ char **pzErrMsg /* Put error message here if not 0 */ ................................................................................ */ SQLITE_PRIVATE void sqlite3CloseExtensions(sqlite3 *db){ int i; assert( sqlite3_mutex_held(db->mutex) ); for(i=0; i<db->nExtension; i++){ sqlite3OsDlClose(db->pVfs, db->aExtension[i]); } sqlite3_free(db->aExtension); } /* ** Enable or disable extension loading. Extension loading is disabled by ** default so as not to open security holes in older applications. */ SQLITE_API int sqlite3_enable_load_extension(sqlite3 *db, int onoff){ ................................................................................ ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains code used to implement the PRAGMA command. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* Ignore this whole file if pragmas are disabled */ #if !defined(SQLITE_OMIT_PRAGMA) && !defined(SQLITE_OMIT_PARSER) /* ................................................................................ || (SQLITE_TEMP_STORE==1 && db->temp_store<=1) || (SQLITE_TEMP_STORE==2 && db->temp_store==1) ){ invalidateTempStorage(pParse); } sqlite3_free(sqlite3_temp_directory); if( zRight[0] ){ sqlite3_temp_directory = zRight; zRight = 0; }else{ sqlite3_temp_directory = 0; } } }else /* ................................................................................ if( db->autoCommit ){ sqlite3BtreeSetSafetyLevel(pDb->pBt, pDb->safety_level, (db->flags&SQLITE_FullFSync)!=0); } #endif } pragma_out: sqlite3_free(zLeft); sqlite3_free(zRight); } #endif /* SQLITE_OMIT_PRAGMA || SQLITE_OMIT_PARSER */ /************** End of pragma.c **********************************************/ /************** Begin file prepare.c *****************************************/ /* ................................................................................ ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains the implementation of the sqlite3_prepare() ** interface, and routines that contribute to loading the database schema ** from disk. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** Fill the InitData structure with an error message that indicates ** that the database is corrupt. */ static void corruptSchema( ................................................................................ const char *zExtra /* Error information */ ){ if( !pData->db->mallocFailed ){ if( zObj==0 ) zObj = "?"; sqlite3SetString(pData->pzErrMsg, pData->db, "malformed database schema (%s)", zObj); if( zExtra && zExtra[0] ){ *pData->pzErrMsg = sqlite3MPrintf(pData->db, "%z - %s", *pData->pzErrMsg, zExtra); } } pData->rc = SQLITE_CORRUPT; } /* ................................................................................ /* Call the parser to process a CREATE TABLE, INDEX or VIEW. ** But because db->init.busy is set to 1, no VDBE code is generated ** or executed. All the parser does is build the internal data ** structures that describe the table, index, or view. */ char *zErr; int rc; assert( db->init.busy ); db->init.iDb = iDb; db->init.newTnum = atoi(argv[1]); rc = sqlite3_exec(db, argv[2], 0, 0, &zErr); db->init.iDb = 0; assert( rc!=SQLITE_OK || zErr==0 ); if( SQLITE_OK!=rc ){ pData->rc = rc; if( rc==SQLITE_NOMEM ){ db->mallocFailed = 1; }else if( rc!=SQLITE_INTERRUPT ){ corruptSchema(pData, argv[0], zErr); } sqlite3_free(zErr); return 1; } }else if( argv[0]==0 ){ corruptSchema(pData, 0, 0); }else{ /* If the SQL column is blank it means this is an index that ** was created to be the PRIMARY KEY or to fulfill a UNIQUE ................................................................................ rc = SQLITE_NOMEM; goto error_out; } sqlite3BtreeEnter(pDb->pBt); rc = sqlite3BtreeCursor(pDb->pBt, MASTER_ROOT, 0, 0, curMain); if( rc!=SQLITE_OK && rc!=SQLITE_EMPTY ){ sqlite3SetString(pzErrMsg, db, "%s", sqlite3ErrStr(rc)); goto leave_error_out; } /* Get the database meta information. ** ** Meta values are as follows: ** meta[0] Schema cookie. Changes with each schema change. ** meta[1] File format of schema layer. ................................................................................ ** meta[9] ** ** Note: The #defined SQLITE_UTF* symbols in sqliteInt.h correspond to ** the possible values of meta[4]. */ if( rc==SQLITE_OK ){ int i; for(i=0; rc==SQLITE_OK && i<sizeof(meta)/sizeof(meta[0]); i++){ rc = sqlite3BtreeGetMeta(pDb->pBt, i+1, (u32 *)&meta[i]); } if( rc ){ sqlite3SetString(pzErrMsg, db, "%s", sqlite3ErrStr(rc)); goto leave_error_out; } }else{ memset(meta, 0, sizeof(meta)); } pDb->pSchema->schema_cookie = meta[0]; /* If opening a non-empty database, check the text encoding. For the ................................................................................ db->pDfltColl = sqlite3FindCollSeq(db, SQLITE_UTF8, "BINARY", 6, 0); }else{ /* If opening an attached database, the encoding much match ENC(db) */ if( meta[4]!=ENC(db) ){ sqlite3SetString(pzErrMsg, db, "attached databases must use the same" " text encoding as main database"); rc = SQLITE_ERROR; goto leave_error_out; } } }else{ DbSetProperty(db, iDb, DB_Empty); } pDb->pSchema->enc = ENC(db); ................................................................................ pDb->pSchema->file_format = meta[1]; if( pDb->pSchema->file_format==0 ){ pDb->pSchema->file_format = 1; } if( pDb->pSchema->file_format>SQLITE_MAX_FILE_FORMAT ){ sqlite3SetString(pzErrMsg, db, "unsupported file format"); rc = SQLITE_ERROR; goto leave_error_out; } /* Ticket #2804: When we open a database in the newer file format, ** clear the legacy_file_format pragma flag so that a VACUUM will ** not downgrade the database and thus invalidate any descending ** indices that the user might have created. */ ................................................................................ rc = sqlite3_exec(db, zSql, sqlite3InitCallback, &initData, 0); #ifndef SQLITE_OMIT_AUTHORIZATION db->xAuth = xAuth; } #endif if( rc==SQLITE_ABORT ) rc = initData.rc; (void)sqlite3SafetyOn(db); sqlite3_free(zSql); #ifndef SQLITE_OMIT_ANALYZE if( rc==SQLITE_OK ){ sqlite3AnalysisLoad(db, iDb); } #endif } if( db->mallocFailed ){ ................................................................................ rc = SQLITE_OK; } /* Jump here for an error that occurs after successfully allocating ** curMain and calling sqlite3BtreeEnter(). For an error that occurs ** before that point, jump to error_out. */ leave_error_out: sqlite3BtreeCloseCursor(curMain); sqlite3_free(curMain); sqlite3BtreeLeave(pDb->pBt); error_out: if( rc==SQLITE_NOMEM || rc==SQLITE_IOERR_NOMEM ){ db->mallocFailed = 1; ................................................................................ sqlite3Error(db, SQLITE_TOOBIG, "statement too long"); (void)sqlite3SafetyOff(db); return sqlite3ApiExit(db, SQLITE_TOOBIG); } zSqlCopy = sqlite3DbStrNDup(db, zSql, nBytes); if( zSqlCopy ){ sqlite3RunParser(&sParse, zSqlCopy, &zErrMsg); sqlite3_free(zSqlCopy); sParse.zTail = &zSql[sParse.zTail-zSqlCopy]; }else{ sParse.zTail = &zSql[nBytes]; } }else{ sqlite3RunParser(&sParse, zSql, &zErrMsg); } ................................................................................ assert(!(*ppStmt)); }else{ *ppStmt = (sqlite3_stmt*)sParse.pVdbe; } if( zErrMsg ){ sqlite3Error(db, rc, "%s", zErrMsg); sqlite3_free(zErrMsg); }else{ sqlite3Error(db, rc, 0); } rc = sqlite3ApiExit(db, rc); assert( (rc&db->errMask)==rc ); return rc; ................................................................................ ** equivalent pointer into the UTF-16 string by counting the unicode ** characters between zSql8 and zTail8, and then returning a pointer ** the same number of characters into the UTF-16 string. */ int chars_parsed = sqlite3Utf8CharLen(zSql8, zTail8-zSql8); *pzTail = (u8 *)zSql + sqlite3Utf16ByteLen(zSql, chars_parsed); } sqlite3_free(zSql8); rc = sqlite3ApiExit(db, rc); sqlite3_mutex_leave(db->mutex); return rc; } /* ** Two versions of the official API. Legacy and new use. In the legacy ................................................................................ ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains C code routines that are called by the parser ** to handle SELECT statements in SQLite. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** Delete all the content of a Select structure but do not deallocate ** the select structure itself. */ static void clearSelect(Select *p){ sqlite3ExprListDelete(p->pEList); sqlite3SrcListDelete(p->pSrc); sqlite3ExprDelete(p->pWhere); sqlite3ExprListDelete(p->pGroupBy); sqlite3ExprDelete(p->pHaving); sqlite3ExprListDelete(p->pOrderBy); sqlite3SelectDelete(p->pPrior); sqlite3ExprDelete(p->pLimit); sqlite3ExprDelete(p->pOffset); } /* ** Initialize a SelectDest structure. */ SQLITE_PRIVATE void sqlite3SelectDestInit(SelectDest *pDest, int eDest, int iParm){ pDest->eDest = eDest; ................................................................................ assert( pOffset==0 || pLimit!=0 ); pNew->pLimit = pLimit; pNew->pOffset = pOffset; pNew->addrOpenEphm[0] = -1; pNew->addrOpenEphm[1] = -1; pNew->addrOpenEphm[2] = -1; if( pNew==&standin) { clearSelect(pNew); pNew = 0; } return pNew; } /* ** Delete the given Select structure and all of its substructures. */ SQLITE_PRIVATE void sqlite3SelectDelete(Select *p){ if( p ){ clearSelect(p); sqlite3_free(p); } } /* ** Given 1 to 3 identifiers preceeding the JOIN keyword, determine the ** type of join. Return an integer constant that expresses that type ** in terms of the following bit values: ................................................................................ if( rc ){ return 0; } pTab = sqlite3DbMallocZero(db, sizeof(Table) ); if( pTab==0 ){ return 0; } pTab->nRef = 1; pTab->zName = zTabName ? sqlite3DbStrDup(db, zTabName) : 0; pEList = pSelect->pEList; pTab->nCol = pEList->nExpr; assert( pTab->nCol>0 ); pTab->aCol = aCol = sqlite3DbMallocZero(db, sizeof(pTab->aCol[0])*pTab->nCol); for(i=0, pCol=aCol; i<pTab->nCol; i++, pCol++){ Expr *p; char *zType; char *zName; int nName; CollSeq *pColl; int cnt; ................................................................................ int iCol = p->iColumn; if( iCol<0 ) iCol = p->pTab->iPKey; zName = sqlite3MPrintf(db, "%s", p->pTab->aCol[iCol].zName); }else{ /* Use the original text of the column expression as its name */ zName = sqlite3MPrintf(db, "%T", &p->span); } if( !zName || db->mallocFailed ){ db->mallocFailed = 1; sqlite3_free(zName); sqlite3DeleteTable(pTab); return 0; } sqlite3Dequote(zName); /* Make sure the column name is unique. If the name is not unique, ** append a integer to the name so that it becomes unique. */ nName = strlen(zName); for(j=cnt=0; j<i; j++){ if( sqlite3StrICmp(aCol[j].zName, zName)==0 ){ zName[nName] = 0; zName = sqlite3MPrintf(db, "%z:%d", zName, ++cnt); j = -1; if( zName==0 ) break; } } pCol->zName = zName; /* Get the typename, type affinity, and collating sequence for the ................................................................................ pCol->affinity = sqlite3ExprAffinity(p); pColl = sqlite3ExprCollSeq(pParse, p); if( pColl ){ pCol->zColl = sqlite3DbStrDup(db, pColl->zName); } } pTab->iPKey = -1; return pTab; } /* ** Prepare a SELECT statement for processing by doing the following ** things: ** ................................................................................ if( zTName ){ sqlite3ErrorMsg(pParse, "no such table: %s", zTName); }else{ sqlite3ErrorMsg(pParse, "no tables specified"); } rc = 1; } sqlite3_free(zTName); } } sqlite3ExprListDelete(pEList); p->pEList = pNew; } #if SQLITE_MAX_COLUMN if( p->pEList && p->pEList->nExpr>db->aLimit[SQLITE_LIMIT_COLUMN] ){ sqlite3ErrorMsg(pParse, "too many columns in result set"); rc = SQLITE_ERROR; } ................................................................................ char *zCol = sqlite3NameFromToken(db, &pE->token); if( zCol==0 ){ return -1; } for(i=0; i<pEList->nExpr; i++){ char *zAs = pEList->a[i].zName; if( zAs!=0 && sqlite3StrICmp(zAs, zCol)==0 ){ sqlite3_free(zCol); return i+1; } } sqlite3_free(zCol); } /* Resolve all names in the ORDER BY term expression */ memset(&nc, 0, sizeof(nc)); nc.pParse = pParse; nc.pSrcList = pSelect->pSrc; ................................................................................ if( iCol<0 ){ return 1; } } if( iCol>0 ){ CollSeq *pColl = pE->pColl; int flags = pE->flags & EP_ExpCollate; sqlite3ExprDelete(pE); pE = sqlite3ExprDup(db, pEList->a[iCol-1].pExpr); pOrderBy->a[i].pExpr = pE; if( pE && pColl && flags ){ pE->pColl = pColl; pE->flags |= flags; } } ................................................................................ } }else{ pDup = sqlite3ExprDup(db, pE); if( !db->mallocFailed ){ assert(pDup); iCol = matchOrderByTermToExprList(pParse, pSelect, pDup, i+1, 1, 0); } sqlite3ExprDelete(pDup); if( iCol<0 ){ return 1; } } if( iCol>0 ){ pE->op = TK_INTEGER; pE->flags |= EP_IntValue; ................................................................................ SelectDest *pDest /* What to do with query results */ ){ int rc = SQLITE_OK; /* Success code from a subroutine */ Select *pPrior; /* Another SELECT immediately to our left */ Vdbe *v; /* Generate code to this VDBE */ SelectDest dest; /* Alternative data destination */ Select *pDelete = 0; /* Chain of simple selects to delete */ /* Make sure there is no ORDER BY or LIMIT clause on prior SELECTs. Only ** the last (right-most) SELECT in the series may have an ORDER BY or LIMIT. */ if( p==0 || p->pPrior==0 ){ rc = 1; goto multi_select_end; } pPrior = p->pPrior; assert( pPrior->pRightmost!=pPrior ); assert( pPrior->pRightmost==p->pRightmost ); if( pPrior->pOrderBy ){ sqlite3ErrorMsg(pParse,"ORDER BY clause should come after %s not before", selectOpName(p->op)); rc = 1; ................................................................................ if( pPrior->pLimit ){ sqlite3ErrorMsg(pParse,"LIMIT clause should come after %s not before", selectOpName(p->op)); rc = 1; goto multi_select_end; } /* Make sure we have a valid query engine. If not, create a new one. */ v = sqlite3GetVdbe(pParse); if( v==0 ){ rc = 1; goto multi_select_end; } /* Create the destination temporary table if necessary */ dest = *pDest; if( dest.eDest==SRT_EphemTab ){ assert( p->pEList ); sqlite3VdbeAddOp2(v, OP_OpenEphemeral, dest.iParm, p->pEList->nExpr); ................................................................................ rc = sqlite3Select(pParse, pPrior, &uniondest, 0, 0, 0); if( rc ){ goto multi_select_end; } /* Code the current SELECT statement */ switch( p->op ){ case TK_EXCEPT: op = SRT_Except; break; case TK_UNION: op = SRT_Union; break; case TK_ALL: op = SRT_Table; break; } p->pPrior = 0; p->disallowOrderBy = 0; pLimit = p->pLimit; p->pLimit = 0; pOffset = p->pOffset; p->pOffset = 0; uniondest.eDest = op; rc = sqlite3Select(pParse, p, &uniondest, 0, 0, 0); /* Query flattening in sqlite3Select() might refill p->pOrderBy. ** Be sure to delete p->pOrderBy, therefore, to avoid a memory leak. */ sqlite3ExprListDelete(p->pOrderBy); pDelete = p->pPrior; p->pPrior = pPrior; p->pOrderBy = 0; sqlite3ExprDelete(p->pLimit); p->pLimit = pLimit; p->pOffset = pOffset; p->iLimit = 0; p->iOffset = 0; if( rc ){ goto multi_select_end; } ................................................................................ p->pLimit = 0; pOffset = p->pOffset; p->pOffset = 0; intersectdest.iParm = tab2; rc = sqlite3Select(pParse, p, &intersectdest, 0, 0, 0); pDelete = p->pPrior; p->pPrior = pPrior; sqlite3ExprDelete(p->pLimit); p->pLimit = pLimit; p->pOffset = pOffset; if( rc ){ goto multi_select_end; } /* Generate code to take the intersection of the two temporary ................................................................................ KeyInfo *pKeyInfo; /* Collating sequence for the result set */ Select *pLoop; /* For looping through SELECT statements */ CollSeq **apColl; /* For looping through pKeyInfo->aColl[] */ int nCol; /* Number of columns in result set */ assert( p->pRightmost==p ); nCol = p->pEList->nExpr; pKeyInfo = sqlite3DbMallocZero(pParse->db, sizeof(*pKeyInfo)+nCol*(sizeof(CollSeq*) + 1)); if( !pKeyInfo ){ rc = SQLITE_NOMEM; goto multi_select_end; } pKeyInfo->enc = ENC(pParse->db); pKeyInfo->nField = nCol; for(i=0, apColl=pKeyInfo->aColl; i<nCol; i++, apColl++){ *apColl = multiSelectCollSeq(pParse, p, i); if( 0==*apColl ){ *apColl = pParse->db->pDfltColl; } } for(pLoop=p; pLoop; pLoop=pLoop->pPrior){ for(i=0; i<2; i++){ int addr = pLoop->addrOpenEphm[i]; if( addr<0 ){ ................................................................................ break; } sqlite3VdbeChangeP2(v, addr, nCol); sqlite3VdbeChangeP4(v, addr, (char*)pKeyInfo, P4_KEYINFO); pLoop->addrOpenEphm[i] = -1; } } sqlite3_free(pKeyInfo); } multi_select_end: pDest->iMem = dest.iMem; pDest->nMem = dest.nMem; sqlite3SelectDelete(pDelete); return rc; } #endif /* SQLITE_OMIT_COMPOUND_SELECT */ /* ** Code an output subroutine for a coroutine implementation of a ** SELECT statment. ................................................................................ ** End: ... ** ** We call AltB, AeqB, AgtB, EofA, and EofB "subroutines" but they are not ** actually called using Gosub and they do not Return. EofA and EofB loop ** until all data is exhausted then jump to the "end" labe. AltB, AeqB, ** and AgtB jump to either L2 or to one of EofA or EofB. */ static int multiSelectOrderBy( Parse *pParse, /* Parsing context */ Select *p, /* The right-most of SELECTs to be coded */ SelectDest *pDest /* What to do with query results */ ){ int i, j; /* Loop counters */ Select *pPrior; /* Another SELECT immediately to our left */ ................................................................................ regLimitB = ++pParse->nMem; sqlite3VdbeAddOp2(v, OP_Copy, p->iOffset ? p->iOffset+1 : p->iLimit, regLimitA); sqlite3VdbeAddOp2(v, OP_Copy, regLimitA, regLimitB); }else{ regLimitA = regLimitB = 0; } sqlite3ExprDelete(p->pLimit); p->pLimit = 0; sqlite3ExprDelete(p->pOffset); p->pOffset = 0; regAddrA = ++pParse->nMem; regEofA = ++pParse->nMem; regAddrB = ++pParse->nMem; regEofB = ++pParse->nMem; regOutA = ++pParse->nMem; ................................................................................ while( pFirst->pPrior ) pFirst = pFirst->pPrior; generateColumnNames(pParse, 0, pFirst->pEList); } /* Reassembly the compound query so that it will be freed correctly ** by the calling function */ if( p->pPrior ){ sqlite3SelectDelete(p->pPrior); } p->pPrior = pPrior; /*** TBD: Insert subroutine calls to close cursors on incomplete **** subqueries ****/ return SQLITE_OK; } #ifndef SQLITE_OMIT_VIEW /* Forward Declarations */ static void substExprList(sqlite3*, ExprList*, int, ExprList*); static void substSelect(sqlite3*, Select *, int, ExprList *); /* ** Scan through the expression pExpr. Replace every reference to ** a column in table number iTable with a copy of the iColumn-th ................................................................................ substExprList(db, p->pEList, iTable, pEList); substExprList(db, p->pGroupBy, iTable, pEList); substExprList(db, p->pOrderBy, iTable, pEList); substExpr(db, p->pHaving, iTable, pEList); substExpr(db, p->pWhere, iTable, pEList); substSelect(db, p->pPrior, iTable, pEList); } #endif /* !defined(SQLITE_OMIT_VIEW) */ #ifndef SQLITE_OMIT_VIEW /* ** This routine attempts to flatten subqueries in order to speed ** execution. It returns 1 if it makes changes and 0 if no flattening ** occurs. ** ** To understand the concept of flattening, consider the following ** query: ................................................................................ ** elements we are now copying in. */ if( pSrc ){ pSubitem = &pSrc->a[iFrom]; nSubSrc = pSubSrc->nSrc; jointype = pSubitem->jointype; sqlite3DeleteTable(pSubitem->pTab); sqlite3_free(pSubitem->zDatabase); sqlite3_free(pSubitem->zName); sqlite3_free(pSubitem->zAlias); pSubitem->pTab = 0; pSubitem->zDatabase = 0; pSubitem->zName = 0; pSubitem->zAlias = 0; } if( nSubSrc!=1 || !pSrc ){ int extra = nSubSrc - 1; ................................................................................ pSub->pLimit = 0; } } /* Finially, delete what is left of the subquery and return ** success. */ sqlite3SelectDelete(pSub1); return 1; } #endif /* SQLITE_OMIT_VIEW */ /* ** Analyze the SELECT statement passed as an argument to see if it ** is a min() or max() query. Return WHERE_ORDERBY_MIN or WHERE_ORDERBY_MAX if ** it is, or 0 otherwise. At present, a query is considered to be ** a min()/max() query if: ** ................................................................................ } for(i=0, pC=pAggInfo->aCol; i<pAggInfo->nAccumulator; i++, pC++){ sqlite3ExprCode(pParse, pC->pExpr, pC->iMem); } pAggInfo->directMode = 0; } #if 0 /* ** This function is used when a SELECT statement is used to create a ** temporary table for iterating through when running an INSTEAD OF ** UPDATE or INSTEAD OF DELETE trigger. ** ** If possible, the SELECT statement is modified so that NULL values ** are stored in the temporary table for all columns for which the ** corresponding bit in argument mask is not set. If mask takes the ** special value 0xffffffff, then all columns are populated. */ SQLITE_PRIVATE void sqlite3SelectMask(Parse *pParse, Select *p, u32 mask){ if( p && !p->pPrior && !p->isDistinct && mask!=0xffffffff ){ ExprList *pEList; int i; sqlite3SelectResolve(pParse, p, 0); pEList = p->pEList; for(i=0; pEList && i<pEList->nExpr && i<32; i++){ if( !(mask&((u32)1<<i)) ){ sqlite3ExprDelete(pEList->a[i].pExpr); pEList->a[i].pExpr = sqlite3Expr(pParse->db, TK_NULL, 0, 0, 0); } } } } #endif /* ** Generate code for the given SELECT statement. ** ** The results are distributed in various ways depending on the ** contents of the SelectDest structure pointed to by argument pDest ** as follows: ** ................................................................................ sqlite3ExprCodeExprList(pParse, pGroupBy, regBase, 0); sqlite3VdbeAddOp2(v, OP_Sequence, sAggInfo.sortingIdx,regBase+nGroupBy); j = nGroupBy+1; for(i=0; i<sAggInfo.nColumn; i++){ struct AggInfo_col *pCol = &sAggInfo.aCol[i]; if( pCol->iSorterColumn>=j ){ int r1 = j + regBase; int r2 = sqlite3ExprCodeGetColumn(pParse, pCol->pTab, pCol->iColumn, pCol->iTable, r1, 0); if( r1!=r2 ){ sqlite3VdbeAddOp2(v, OP_SCopy, r2, r1); } j++; } } regRecord = sqlite3GetTempReg(pParse); sqlite3VdbeAddOp3(v, OP_MakeRecord, regBase, nCol, regRecord); sqlite3VdbeAddOp2(v, OP_IdxInsert, sAggInfo.sortingIdx, regRecord); sqlite3ReleaseTempReg(pParse, regRecord); sqlite3ReleaseTempRange(pParse, regBase, nCol); ................................................................................ /* This case runs if the aggregate has no GROUP BY clause. The ** processing is much simpler since there is only a single row ** of output. */ resetAccumulator(pParse, &sAggInfo); pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, &pMinMax, flag); if( pWInfo==0 ){ sqlite3ExprListDelete(pDel); goto select_end; } updateAccumulator(pParse, &sAggInfo); if( !pMinMax && flag ){ sqlite3VdbeAddOp2(v, OP_Goto, 0, pWInfo->iBreak); VdbeComment((v, "%s() by index",(flag==WHERE_ORDERBY_MIN?"min":"max"))); } ................................................................................ pOrderBy = 0; if( pHaving ){ sqlite3ExprIfFalse(pParse, pHaving, addrEnd, SQLITE_JUMPIFNULL); } selectInnerLoop(pParse, p, p->pEList, 0, 0, 0, -1, pDest, addrEnd, addrEnd); sqlite3ExprListDelete(pDel); } sqlite3VdbeResolveLabel(v, addrEnd); } /* endif aggregate query */ /* If there is an ORDER BY clause, then we need to sort the results ** and send them to the callback one by one. ................................................................................ /* Identify column names if we will be using them in a callback. This ** step is skipped if the output is going to some other destination. */ if( rc==SQLITE_OK && pDest->eDest==SRT_Callback ){ generateColumnNames(pParse, pTabList, pEList); } sqlite3_free(sAggInfo.aCol); sqlite3_free(sAggInfo.aFunc); return rc; } #if defined(SQLITE_DEBUG) /* ******************************************************************************* ** The following code is used for testing and debugging only. The code ................................................................................ ** This file contains the sqlite3_get_table() and sqlite3_free_table() ** interface routines. These are just wrappers around the main ** interface routine of sqlite3_exec(). ** ** These routines are in a separate files so that they will not be linked ** if they are not used. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef SQLITE_OMIT_GET_TABLE /* ** This structure is used to pass data from sqlite3_get_table() through ** to the callback function is uses to build the result. ................................................................................ ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef SQLITE_OMIT_TRIGGER /* ** Delete a linked list of TriggerStep structures. */ SQLITE_PRIVATE void sqlite3DeleteTriggerStep(TriggerStep *pTriggerStep){ while( pTriggerStep ){ TriggerStep * pTmp = pTriggerStep; pTriggerStep = pTriggerStep->pNext; if( pTmp->target.dyn ) sqlite3_free((char*)pTmp->target.z); sqlite3ExprDelete(pTmp->pWhere); sqlite3ExprListDelete(pTmp->pExprList); sqlite3SelectDelete(pTmp->pSelect); sqlite3IdListDelete(pTmp->pIdList); sqlite3_free(pTmp); } } /* ** This is called by the parser when it sees a CREATE TRIGGER statement ** up to the point of the BEGIN before the trigger actions. A Trigger ** structure is generated based on the information available and stored ................................................................................ pTrigger->pWhen = sqlite3ExprDup(db, pWhen); pTrigger->pColumns = sqlite3IdListDup(db, pColumns); sqlite3TokenCopy(db, &pTrigger->nameToken,pName); assert( pParse->pNewTrigger==0 ); pParse->pNewTrigger = pTrigger; trigger_cleanup: sqlite3_free(zName); sqlite3SrcListDelete(pTableName); sqlite3IdListDelete(pColumns); sqlite3ExprDelete(pWhen); if( !pParse->pNewTrigger ){ sqlite3DeleteTrigger(pTrigger); }else{ assert( pParse->pNewTrigger==pTrigger ); } } /* ** This routine is called after all of the trigger actions have been parsed ................................................................................ if( v==0 ) goto triggerfinish_cleanup; sqlite3BeginWriteOperation(pParse, 0, iDb); z = sqlite3DbStrNDup(db, (char*)pAll->z, pAll->n); sqlite3NestedParse(pParse, "INSERT INTO %Q.%s VALUES('trigger',%Q,%Q,0,'CREATE TRIGGER %q')", db->aDb[iDb].zName, SCHEMA_TABLE(iDb), pTrig->name, pTrig->table, z); sqlite3_free(z); sqlite3ChangeCookie(pParse, iDb); sqlite3VdbeAddOp4(v, OP_ParseSchema, iDb, 0, 0, sqlite3MPrintf( db, "type='trigger' AND name='%q'", pTrig->name), P4_DYNAMIC ); } if( db->init.busy ){ ................................................................................ assert( pTab!=0 ); pTrig->pNext = pTab->pTrigger; pTab->pTrigger = pTrig; pTrig = 0; } triggerfinish_cleanup: sqlite3DeleteTrigger(pTrig); assert( !pParse->pNewTrigger ); sqlite3DeleteTriggerStep(pStepList); } /* ** Make a copy of all components of the given trigger step. This has ** the effect of copying all Expr.token.z values into memory obtained ** from sqlite3_malloc(). As initially created, the Expr.token.z values ** all point to the input string that was fed to the parser. But that ................................................................................ static void sqlitePersistTriggerStep(sqlite3 *db, TriggerStep *p){ if( p->target.z ){ p->target.z = (u8*)sqlite3DbStrNDup(db, (char*)p->target.z, p->target.n); p->target.dyn = 1; } if( p->pSelect ){ Select *pNew = sqlite3SelectDup(db, p->pSelect); sqlite3SelectDelete(p->pSelect); p->pSelect = pNew; } if( p->pWhere ){ Expr *pNew = sqlite3ExprDup(db, p->pWhere); sqlite3ExprDelete(p->pWhere); p->pWhere = pNew; } if( p->pExprList ){ ExprList *pNew = sqlite3ExprListDup(db, p->pExprList); sqlite3ExprListDelete(p->pExprList); p->pExprList = pNew; } if( p->pIdList ){ IdList *pNew = sqlite3IdListDup(db, p->pIdList); sqlite3IdListDelete(p->pIdList); p->pIdList = pNew; } } /* ** Turn a SELECT statement (that the pSelect parameter points to) into ** a trigger step. Return a pointer to a TriggerStep structure. ................................................................................ ** ** The parser calls this routine when it finds a SELECT statement in ** body of a TRIGGER. */ SQLITE_PRIVATE TriggerStep *sqlite3TriggerSelectStep(sqlite3 *db, Select *pSelect){ TriggerStep *pTriggerStep = sqlite3DbMallocZero(db, sizeof(TriggerStep)); if( pTriggerStep==0 ) { sqlite3SelectDelete(pSelect); return 0; } pTriggerStep->op = TK_SELECT; pTriggerStep->pSelect = pSelect; pTriggerStep->orconf = OE_Default; sqlitePersistTriggerStep(db, pTriggerStep); ................................................................................ pTriggerStep->pSelect = pSelect; pTriggerStep->target = *pTableName; pTriggerStep->pIdList = pColumn; pTriggerStep->pExprList = pEList; pTriggerStep->orconf = orconf; sqlitePersistTriggerStep(db, pTriggerStep); }else{ sqlite3IdListDelete(pColumn); sqlite3ExprListDelete(pEList); sqlite3SelectDelete(pSelect); } return pTriggerStep; } /* ** Construct a trigger step that implements an UPDATE statement and return ................................................................................ Token *pTableName, /* Name of the table to be updated */ ExprList *pEList, /* The SET clause: list of column and new values */ Expr *pWhere, /* The WHERE clause */ int orconf /* The conflict algorithm. (OE_Abort, OE_Ignore, etc) */ ){ TriggerStep *pTriggerStep = sqlite3DbMallocZero(db, sizeof(TriggerStep)); if( pTriggerStep==0 ){ sqlite3ExprListDelete(pEList); sqlite3ExprDelete(pWhere); return 0; } pTriggerStep->op = TK_UPDATE; pTriggerStep->target = *pTableName; pTriggerStep->pExprList = pEList; pTriggerStep->pWhere = pWhere; ................................................................................ SQLITE_PRIVATE TriggerStep *sqlite3TriggerDeleteStep( sqlite3 *db, /* Database connection */ Token *pTableName, /* The table from which rows are deleted */ Expr *pWhere /* The WHERE clause */ ){ TriggerStep *pTriggerStep = sqlite3DbMallocZero(db, sizeof(TriggerStep)); if( pTriggerStep==0 ){ sqlite3ExprDelete(pWhere); return 0; } pTriggerStep->op = TK_DELETE; pTriggerStep->target = *pTableName; pTriggerStep->pWhere = pWhere; pTriggerStep->orconf = OE_Default; ................................................................................ return pTriggerStep; } /* ** Recursively delete a Trigger structure */ SQLITE_PRIVATE void sqlite3DeleteTrigger(Trigger *pTrigger){ if( pTrigger==0 ) return; sqlite3DeleteTriggerStep(pTrigger->step_list); sqlite3_free(pTrigger->name); sqlite3_free(pTrigger->table); sqlite3ExprDelete(pTrigger->pWhen); sqlite3IdListDelete(pTrigger->pColumns); if( pTrigger->nameToken.dyn ) sqlite3_free((char*)pTrigger->nameToken.z); sqlite3_free(pTrigger); } /* ** This function is called to drop a trigger from the database schema. ** ** This may be called directly from the parser and therefore identifies ** the trigger by name. The sqlite3DropTriggerPtr() routine does the ................................................................................ sqlite3ErrorMsg(pParse, "no such trigger: %S", pName, 0); } goto drop_trigger_cleanup; } sqlite3DropTriggerPtr(pParse, pTrigger); drop_trigger_cleanup: sqlite3SrcListDelete(pName); } /* ** Return a pointer to the Table structure for the table that a trigger ** is set on. */ static Table *tableOfTrigger(Trigger *pTrigger){ ................................................................................ cc->pNext = cc->pNext->pNext; break; } cc = cc->pNext; } assert(cc); } sqlite3DeleteTrigger(pTrigger); db->flags |= SQLITE_InternChanges; } } /* ** pEList is the SET clause of an UPDATE statement. Each entry ** in pEList is of the format <id>=<expr>. If any of the entries ................................................................................ Select *ss = sqlite3SelectDup(db, pTriggerStep->pSelect); if( ss ){ SelectDest dest; sqlite3SelectDestInit(&dest, SRT_Discard, 0); sqlite3SelectResolve(pParse, ss, 0); sqlite3Select(pParse, ss, &dest, 0, 0, 0); sqlite3SelectDelete(ss); } break; } case TK_UPDATE: { SrcList *pSrc; pSrc = targetSrcList(pParse, pTriggerStep); sqlite3VdbeAddOp2(v, OP_ResetCount, 0, 0); ................................................................................ sqlite3AuthContextPush(pParse, &sContext, p->name); /* code the WHEN clause */ endTrigger = sqlite3VdbeMakeLabel(pParse->pVdbe); whenExpr = sqlite3ExprDup(db, p->pWhen); if( db->mallocFailed || sqlite3ExprResolveNames(&sNC, whenExpr) ){ pParse->trigStack = trigStackEntry.pNext; sqlite3ExprDelete(whenExpr); return 1; } sqlite3ExprIfFalse(pParse, whenExpr, endTrigger, SQLITE_JUMPIFNULL); sqlite3ExprDelete(whenExpr); codeTriggerProgram(pParse, p->step_list, orconf); /* Pop the entry off the trigger stack */ pParse->trigStack = trigStackEntry.pNext; sqlite3AuthContextPop(&sContext); ................................................................................ ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains C code routines that are called by the parser ** to handle UPDATE statements. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef SQLITE_OMIT_VIRTUALTABLE /* Forward declaration */ static void updateVirtualTable( Parse *pParse, /* The parsing context */ SrcList *pSrc, /* The virtual table to be modified */ ................................................................................ sqlite3VdbeAddOp2(v, OP_ResultRow, regRowCount, 1); sqlite3VdbeSetNumCols(v, 1); sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "rows updated", P4_STATIC); } update_cleanup: sqlite3AuthContextPop(&sContext); sqlite3_free(aRegIdx); sqlite3_free(aXRef); sqlite3SrcListDelete(pTabList); sqlite3ExprListDelete(pChanges); sqlite3ExprDelete(pWhere); return; } #ifndef SQLITE_OMIT_VIRTUALTABLE /* ** Generate code for an UPDATE of a virtual table. ** ................................................................................ sqlite3VtabMakeWritable(pParse, pTab); sqlite3VdbeAddOp4(v, OP_VUpdate, 0, pTab->nCol+2, iReg, pVtab, P4_VTAB); sqlite3VdbeAddOp2(v, OP_Next, ephemTab, addr); sqlite3VdbeJumpHere(v, addr-1); sqlite3VdbeAddOp2(v, OP_Close, ephemTab, 0); /* Cleanup */ sqlite3SelectDelete(pSelect); } #endif /* SQLITE_OMIT_VIRTUALTABLE */ /* Make sure "isView" gets undefined in case this file becomes part of ** the amalgamation - so that subsequent files do not see isView as a ** macro. */ #undef isView ................................................................................ ** ************************************************************************* ** This file contains code used to implement the VACUUM command. ** ** Most of the code in this file may be omitted by defining the ** SQLITE_OMIT_VACUUM macro. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #if !defined(SQLITE_OMIT_VACUUM) && !defined(SQLITE_OMIT_ATTACH) /* ** Execute zSql on database db. Return an error code. */ static int execSql(sqlite3 *db, const char *zSql){ ................................................................................ ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains code used to help implement virtual tables. ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ #ifndef SQLITE_OMIT_VIRTUALTABLE static int createModule( sqlite3 *db, /* Database in which module is registered */ const char *zName, /* Name assigned to this module */ const sqlite3_module *pModule, /* The definition of the module */ ................................................................................ pMod->pModule = pModule; pMod->pAux = pAux; pMod->xDestroy = xDestroy; pDel = (Module *)sqlite3HashInsert(&db->aModule, zCopy, nName, (void*)pMod); if( pDel && pDel->xDestroy ){ pDel->xDestroy(pDel->pAux); } sqlite3_free(pDel); if( pDel==pMod ){ db->mallocFailed = 1; } sqlite3ResetInternalSchema(db, 0); } rc = sqlite3ApiExit(db, SQLITE_OK); sqlite3_mutex_leave(db->mutex); ................................................................................ /* ** Clear any and all virtual-table information from the Table record. ** This routine is called, for example, just before deleting the Table ** record. */ SQLITE_PRIVATE void sqlite3VtabClear(Table *p){ sqlite3_vtab *pVtab = p->pVtab; if( pVtab ){ assert( p->pMod && p->pMod->pModule ); sqlite3VtabUnlock(p->pSchema->db, pVtab); p->pVtab = 0; } if( p->azModuleArg ){ int i; for(i=0; i<p->nModuleArg; i++){ sqlite3_free(p->azModuleArg[i]); } sqlite3_free(p->azModuleArg); } } /* ** Add a new module argument to pTable->azModuleArg[]. ** The string is not copied - the pointer is stored. The ** string will be freed automatically when the table is ................................................................................ int i = pTable->nModuleArg++; int nBytes = sizeof(char *)*(1+pTable->nModuleArg); char **azModuleArg; azModuleArg = sqlite3DbRealloc(db, pTable->azModuleArg, nBytes); if( azModuleArg==0 ){ int j; for(j=0; j<i; j++){ sqlite3_free(pTable->azModuleArg[j]); } sqlite3_free(zArg); sqlite3_free(pTable->azModuleArg); pTable->nModuleArg = 0; }else{ azModuleArg[i] = zArg; azModuleArg[i+1] = 0; } pTable->azModuleArg = azModuleArg; } ................................................................................ "WHERE rowid=#%d", db->aDb[iDb].zName, SCHEMA_TABLE(iDb), pTab->zName, pTab->zName, zStmt, pParse->regRowid ); sqlite3_free(zStmt); v = sqlite3GetVdbe(pParse); sqlite3ChangeCookie(pParse, iDb); sqlite3VdbeAddOp2(v, OP_Expire, 0, 0); zWhere = sqlite3MPrintf(db, "name='%q'", pTab->zName); sqlite3VdbeAddOp4(v, OP_ParseSchema, iDb, 1, 0, zWhere, P4_DYNAMIC); sqlite3VdbeAddOp4(v, OP_VCreate, iDb, 0, 0, ................................................................................ } if( SQLITE_OK!=rc ){ if( zErr==0 ){ *pzErr = sqlite3MPrintf(db, "vtable constructor failed: %s", zModuleName); }else { *pzErr = sqlite3MPrintf(db, "%s", zErr); sqlite3_free(zErr); } }else if( db->pVTab ){ const char *zFormat = "vtable constructor did not declare schema: %s"; *pzErr = sqlite3MPrintf(db, zFormat, pTab->zName); rc = SQLITE_ERROR; } if( rc==SQLITE_OK ){ rc = rc2; } db->pVTab = 0; sqlite3_free(zModuleName); /* If everything went according to plan, loop through the columns ** of the table to see if any of them contain the token "hidden". ** If so, set the Column.isHidden flag and remove the token from ** the type string. */ if( rc==SQLITE_OK ){ ................................................................................ } else { char *zErr = 0; sqlite3 *db = pParse->db; rc = vtabCallConstructor(db, pTab, pMod, pMod->pModule->xConnect, &zErr); if( rc!=SQLITE_OK ){ sqlite3ErrorMsg(pParse, "%s", zErr); } sqlite3_free(zErr); } return rc; } /* ** Add the virtual table pVtab to the array sqlite3.aVTrans[]. ................................................................................ /* ** This function is invoked by the vdbe to call the xCreate method ** of the virtual table named zTab in database iDb. ** ** If an error occurs, *pzErr is set to point an an English language ** description of the error and an SQLITE_XXX error code is returned. ** In this case the caller must call sqlite3_free() on *pzErr. */ SQLITE_PRIVATE int sqlite3VtabCallCreate(sqlite3 *db, int iDb, const char *zTab, char **pzErr){ int rc = SQLITE_OK; Table *pTab; Module *pMod; const char *zModule; ................................................................................ pTab->aCol = sParse.pNewTable->aCol; pTab->nCol = sParse.pNewTable->nCol; sParse.pNewTable->nCol = 0; sParse.pNewTable->aCol = 0; db->pVTab = 0; } else { sqlite3Error(db, SQLITE_ERROR, zErr); sqlite3_free(zErr); rc = SQLITE_ERROR; } sParse.declareVtab = 0; sqlite3_finalize((sqlite3_stmt*)sParse.pVdbe); sqlite3DeleteTable(sParse.pNewTable); sParse.pNewTable = 0; ................................................................................ for(i=0; i<db->nVTrans && db->aVTrans[i]; i++){ sqlite3_vtab *pVtab = db->aVTrans[i]; int (*x)(sqlite3_vtab *); x = *(int (**)(sqlite3_vtab *))((char *)pVtab->pModule + offset); if( x ) x(pVtab); sqlite3VtabUnlock(db, pVtab); } sqlite3_free(db->aVTrans); db->nVTrans = 0; db->aVTrans = 0; } } /* ** If argument rc2 is not SQLITE_OK, then return it and do nothing. ** Otherwise, invoke the xSync method of all virtual tables in the ** sqlite3.aVTrans array. Return the error code for the first error ** that occurs, or SQLITE_OK if all xSync operations are successful. */ SQLITE_PRIVATE int sqlite3VtabSync(sqlite3 *db, int rc2){ int i; int rc = SQLITE_OK; int rcsafety; sqlite3_vtab **aVTrans = db->aVTrans; if( rc2!=SQLITE_OK ) return rc2; rc = sqlite3SafetyOff(db); db->aVTrans = 0; for(i=0; rc==SQLITE_OK && i<db->nVTrans && aVTrans[i]; i++){ sqlite3_vtab *pVtab = aVTrans[i]; int (*x)(sqlite3_vtab *); x = pVtab->pModule->xSync; if( x ){ rc = x(pVtab); } } db->aVTrans = aVTrans; rcsafety = sqlite3SafetyOn(db); if( rc==SQLITE_OK ){ rc = rcsafety; ................................................................................ if( db->aVTrans[i]==pVtab ){ return SQLITE_OK; } } /* Invoke the xBegin method */ rc = pModule->xBegin(pVtab); if( rc!=SQLITE_OK ){ return rc; } rc = addToVTrans(db, pVtab); } return rc; } /* ** The first parameter (pDef) is a function implementation. The ** second parameter (pExpr) is the first argument to this function. ................................................................................ */ zLowerName = sqlite3DbStrDup(db, pDef->zName); if( zLowerName ){ for(z=(unsigned char*)zLowerName; *z; z++){ *z = sqlite3UpperToLower[*z]; } rc = pMod->xFindFunction(pVtab, nArg, zLowerName, &xFunc, &pArg); sqlite3_free(zLowerName); } if( rc==0 ){ return pDef; } /* Create a new ephemeral function definition for the overloaded ** function */ ................................................................................ ** This module contains C code that generates VDBE code used to process ** the WHERE clause of SQL statements. This module is responsible for ** generating the code that loops through a table looking for applicable ** rows. Indices are selected and used to speed the search when doing ** so is applicable. Because this module is responsible for selecting ** indices, you might also think of this module as the "query optimizer". ** ** $Id: sqlite3.c,v 1.8 2008/07/16 23:42:28 rmsimpson Exp $ */ /* ** The number of bits in a Bitmask. "BMS" means "BitMask Size". */ #define BMS (sizeof(Bitmask)*8) ................................................................................ Bitmask prereqRight; /* Bitmask of tables used by pRight */ Bitmask prereqAll; /* Bitmask of tables referenced by p */ }; /* ** Allowed values of WhereTerm.flags */ #define TERM_DYNAMIC 0x01 /* Need to call sqlite3ExprDelete(pExpr) */ #define TERM_VIRTUAL 0x02 /* Added by the optimizer. Do not code */ #define TERM_CODED 0x04 /* This term is already coded */ #define TERM_COPIED 0x08 /* Has a child */ #define TERM_OR_OK 0x10 /* Used during OR-clause processing */ /* ** An instance of the following structure holds all information about a ................................................................................ /* ** Deallocate a WhereClause structure. The WhereClause structure ** itself is not freed. This routine is the inverse of whereClauseInit(). */ static void whereClauseClear(WhereClause *pWC){ int i; WhereTerm *a; for(i=pWC->nTerm-1, a=pWC->a; i>=0; i--, a++){ if( a->flags & TERM_DYNAMIC ){ sqlite3ExprDelete(a->pExpr); } } if( pWC->a!=pWC->aStatic ){ sqlite3_free(pWC->a); } } /* ** Add a new entries to the WhereClause structure. Increase the allocated ** space as necessary. ** ................................................................................ ** the pWC->a[] array. */ static int whereClauseInsert(WhereClause *pWC, Expr *p, int flags){ WhereTerm *pTerm; int idx; if( pWC->nTerm>=pWC->nSlot ){ WhereTerm *pOld = pWC->a; pWC->a = sqlite3Malloc( sizeof(pWC->a[0])*pWC->nSlot*2 ); if( pWC->a==0 ){ pWC->pParse->db->mallocFailed = 1; if( flags & TERM_DYNAMIC ){ sqlite3ExprDelete(p); } pWC->a = pOld; return 0; } memcpy(pWC->a, pOld, sizeof(pWC->a[0])*pWC->nTerm); if( pOld!=pWC->aStatic ){ sqlite3_free(pOld); } pWC->nSlot *= 2; } pTerm = &pWC->a[idx = pWC->nTerm]; pWC->nTerm++; pTerm->pExpr = p; pTerm->flags = flags; ................................................................................ if( pRight && pRight->op==TK_COLUMN ){ WhereTerm *pNew; Expr *pDup; if( pTerm->leftCursor>=0 ){ int idxNew; pDup = sqlite3ExprDup(db, pExpr); if( db->mallocFailed ){ sqlite3ExprDelete(pDup); return; } idxNew = whereClauseInsert(pWC, pDup, TERM_VIRTUAL|TERM_DYNAMIC); if( idxNew==0 ) return; pNew = &pWC->a[idxNew]; pNew->iParent = idxTerm; pTerm = &pWC->a[idxTerm]; ................................................................................ pNew->pList = pList; idxNew = whereClauseInsert(pWC, pNew, TERM_VIRTUAL|TERM_DYNAMIC); exprAnalyze(pSrc, pWC, idxNew); pTerm = &pWC->a[idxTerm]; pWC->a[idxNew].iParent = idxTerm; pTerm->nChild = 1; }else{ sqlite3ExprListDelete(pList); } } or_not_possible: whereClauseClear(&sOr); } #endif /* SQLITE_OMIT_OR_OPTIMIZATION */ ................................................................................ struct SrcList_item *pSrc, /* The FROM clause term to search */ Bitmask notReady, /* Mask of cursors that are not available */ ExprList *pOrderBy, /* The order by clause */ int orderByUsable, /* True if we can potential sort */ sqlite3_index_info **ppIdxInfo /* Index information passed to xBestIndex */ ){ Table *pTab = pSrc->pTab; sqlite3_index_info *pIdxInfo; struct sqlite3_index_constraint *pIdxCons; struct sqlite3_index_orderby *pIdxOrderBy; struct sqlite3_index_constraint_usage *pUsage; WhereTerm *pTerm; int i, j; int nOrderBy; ................................................................................ */ /* The module name must be defined. Also, by this point there must ** be a pointer to an sqlite3_vtab structure. Otherwise ** sqlite3ViewGetColumnNames() would have picked up the error. */ assert( pTab->azModuleArg && pTab->azModuleArg[0] ); assert( pTab->pVtab ); #if 0 if( pTab->pVtab==0 ){ sqlite3ErrorMsg(pParse, "undefined module %s for table %s", pTab->azModuleArg[0], pTab->zName); return 0.0; } #endif ................................................................................ if( pIdxInfo->nOrderBy && !orderByUsable ){ *(int*)&pIdxInfo->nOrderBy = 0; } (void)sqlite3SafetyOff(pParse->db); WHERETRACE(("xBestIndex for %s\n", pTab->zName)); TRACE_IDX_INPUTS(pIdxInfo); rc = pTab->pVtab->pModule->xBestIndex(pTab->pVtab, pIdxInfo); TRACE_IDX_OUTPUTS(pIdxInfo); (void)sqlite3SafetyOn(pParse->db); for(i=0; i<pIdxInfo->nConstraint; i++){ if( !pIdxInfo->aConstraint[i].usable && pUsage[i].argvIndex>0 ){ sqlite3ErrorMsg(pParse, "table %s: xBestIndex returned an invalid plan", pTab->zName); return 0.0; } } if( rc!=SQLITE_OK ){ if( rc==SQLITE_NOMEM ){ pParse->db->mallocFailed = 1; }else { sqlite3ErrorMsg(pParse, "%s", sqlite3ErrStr(rc)); } } *(int*)&pIdxInfo->nOrderBy = nOrderBy; return pIdxInfo->estimatedCost; } #endif /* SQLITE_OMIT_VIRTUALTABLE */ /* ** Find the best index for accessing a particular table. Return a pointer ** to the index, flags that describe how the index should be used, the ................................................................................ /* ** Free a WhereInfo structure */ static void whereInfoFree(WhereInfo *pWInfo){ if( pWInfo ){ int i; for(i=0; i<pWInfo->nLevel; i++){ sqlite3_index_info *pInfo = pWInfo->a[i].pIdxInfo; if( pInfo ){ assert( pInfo->needToFreeIdxStr==0 ); sqlite3_free(pInfo); } } sqlite3_free(pWInfo); } } /* ** Generate the beginning of the loop used for WHERE clause processing. ** The return value is a pointer to an opaque structure that contains ................................................................................ #ifndef SQLITE_OMIT_EXPLAIN if( pParse->explain==2 ){ char *zMsg; struct SrcList_item *pItem = &pTabList->a[pLevel->iFrom]; zMsg = sqlite3MPrintf(db, "TABLE %s", pItem->zName); if( pItem->zAlias ){ zMsg = sqlite3MPrintf(db, "%z AS %s", zMsg, pItem->zAlias); } if( (pIx = pLevel->pIdx)!=0 ){ zMsg = sqlite3MPrintf(db, "%z WITH INDEX %s", zMsg, pIx->zName); }else if( pLevel->flags & (WHERE_ROWID_EQ|WHERE_ROWID_RANGE) ){ zMsg = sqlite3MPrintf(db, "%z USING PRIMARY KEY", zMsg); } #ifndef SQLITE_OMIT_VIRTUALTABLE else if( pLevel->pBestIdx ){ sqlite3_index_info *pBestIdx = pLevel->pBestIdx; zMsg = sqlite3MPrintf(db, "%z VIRTUAL TABLE INDEX %d:%s", zMsg, pBestIdx->idxNum, pBestIdx->idxStr); } #endif if( pLevel->flags & WHERE_ORDERBY ){ zMsg = sqlite3MPrintf(db, "%z ORDER BY", zMsg); } sqlite3VdbeAddOp4(v, OP_Explain, i, pLevel->iFrom, 0, zMsg, P4_DYNAMIC); } #endif /* SQLITE_OMIT_EXPLAIN */ pTabItem = &pTabList->a[pLevel->iFrom]; pTab = pTabItem->pTab; iDb = sqlite3SchemaToIndex(pParse->db, pTab->pSchema); ................................................................................ } /* ** Generate the end of the WHERE loop. See comments on ** sqlite3WhereBegin() for additional information. */ SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo *pWInfo){ Vdbe *v = pWInfo->pParse->pVdbe; int i; WhereLevel *pLevel; SrcList *pTabList = pWInfo->pTabList; /* Generate loop termination code. */ sqlite3ExprClearColumnCache(pWInfo->pParse, -1); for(i=pTabList->nSrc-1; i>=0; i--){ pLevel = &pWInfo->a[i]; sqlite3VdbeResolveLabel(v, pLevel->cont); if( pLevel->op!=OP_Noop ){ sqlite3VdbeAddOp2(v, pLevel->op, pLevel->p1, pLevel->p2); } if( pLevel->nIn ){ ................................................................................ int j; sqlite3VdbeResolveLabel(v, pLevel->nxt); for(j=pLevel->nIn, pIn=&pLevel->aInLoop[j-1]; j>0; j--, pIn--){ sqlite3VdbeJumpHere(v, pIn->topAddr+1); sqlite3VdbeAddOp2(v, OP_Next, pIn->iCur, pIn->topAddr); sqlite3VdbeJumpHere(v, pIn->topAddr-1); } sqlite3_free(pLevel->aInLoop); } sqlite3VdbeResolveLabel(v, pLevel->brk); if( pLevel->iLeftJoin ){ int addr; addr = sqlite3VdbeAddOp1(v, OP_IfPos, pLevel->iLeftJoin); sqlite3VdbeAddOp1(v, OP_NullRow, pTabList->a[i].iCursor); if( pLevel->iIdxCur>=0 ){ .... |