System.Data.SQLite
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Overview
Comment:Adjustments to the native library pre-loading logic for the .NET Compact Framework.
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | refactorNativeLibraryPreLoader
Files: files | file ages | folders
SHA1: e90af0978f10d8bfddbe349680cdd1f715c68058
User & Date: mistachkin 2013-12-27 08:36:14
Context
2013-12-27
11:02
Modify the native library pre-loader to optionally support searching for the SQLite native library in more than one location. Bump all versions to 1.0.91.0. Update version history docs. check-in: ae2e6767b5 user: mistachkin tags: refactorNativeLibraryPreLoader
08:36
Adjustments to the native library pre-loading logic for the .NET Compact Framework. check-in: e90af0978f user: mistachkin tags: refactorNativeLibraryPreLoader
07:41
Update the Eagle core script library and test suite infrastructure to better support testing the native library pre-loading code. check-in: 9e3b23cb78 user: mistachkin tags: refactorNativeLibraryPreLoader
Changes
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Changes to System.Data.SQLite/UnsafeNativeMethods.cs.

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      /// specified by <paramref name="default" /> if it has not been set
      /// explicitly or cannot be determined.  By default, all references to
      /// existing environment will be expanded within the value to be returned
      /// unless either the "No_Expand" or "No_Expand_<paramref name="name" />"
      /// environment variables are set [to anything].
      /// </returns>
      internal static string GetSettingValue(
          string name,
          string @default
          )
      {
          if (name == null)
              return @default;

          string value = null;

................................................................................
      /// The original dynamic link library file name to inspect.
      /// </param>
      /// <returns>
      /// The dynamic link library file name, possibly modified to include an
      /// extension.
      /// </returns>
      private static string FixUpDllFileName(
          string fileName
          )
      {
          if (!String.IsNullOrEmpty(fileName))
          {
              PlatformID platformId = Environment.OSVersion.Platform;

              if ((platformId == PlatformID.Win32S) ||
................................................................................
              }
              catch
              {
                  // do nothing.
              }
#endif
          }
#endif


          /////////////////////////////////////////////////////////////////////

#if PLATFORM_COMPACTFRAMEWORK
          //
          // NOTE: On the .NET Compact Framework, attempt to use the native
          //       Win32 API function (via P/Invoke) that can provide us with
          //       the processor architecture.
          //
          try
          {
              //
              // NOTE: The output of the GetSystemInfo function will be placed
              //       here.  Only the processor architecture field is used by
              //       this method.
              //
              SYSTEM_INFO systemInfo;

              //
              // NOTE: Query the system information via P/Invoke, thus filling
              //       the structure.
              //
              GetSystemInfo(out systemInfo);

              //
              // NOTE: Return the processor architecture value as a string.
              //
              processorArchitecture =
                  systemInfo.wProcessorArchitecture.ToString();
          }
          catch
          {
              // do nothing.
          }

          //
          // NOTE: Upon failure, return an empty string.


          //
          processorArchitecture = String.Empty;

#endif



          return processorArchitecture;
      }

      /////////////////////////////////////////////////////////////////////////
      /// <summary>
      /// Given the processor architecture, returns the name of the platform.
................................................................................
      /// The processor architecture to be translated to a platform name.
      /// </param>
      /// <returns>
      /// The platform name for the specified processor architecture -OR- null
      /// if it cannot be determined.
      /// </returns>
      private static string GetPlatformName(
          string processorArchitecture
          )
      {
          if (String.IsNullOrEmpty(processorArchitecture))
              return null;

          lock (staticSyncRoot)
          {
................................................................................
      /// LoadLibrary fails.
      /// </param>
      /// <returns>
      /// Non-zero if the native module was loaded successfully; otherwise,
      /// zero.
      /// </returns>
      private static bool PreLoadSQLiteDll(
          string directory,
          string processorArchitecture,
          ref string nativeModuleFileName,
          ref IntPtr nativeModuleHandle
          )
      {
          //
          // NOTE: If the specified base directory is null, use the default
          //       (i.e. attempt to automatically detect it).
          //
          if (directory == null)







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      /// specified by <paramref name="default" /> if it has not been set
      /// explicitly or cannot be determined.  By default, all references to
      /// existing environment will be expanded within the value to be returned
      /// unless either the "No_Expand" or "No_Expand_<paramref name="name" />"
      /// environment variables are set [to anything].
      /// </returns>
      internal static string GetSettingValue(
          string name,    /* in */
          string @default /* in */
          )
      {
          if (name == null)
              return @default;

          string value = null;

................................................................................
      /// The original dynamic link library file name to inspect.
      /// </param>
      /// <returns>
      /// The dynamic link library file name, possibly modified to include an
      /// extension.
      /// </returns>
      private static string FixUpDllFileName(
          string fileName /* in */
          )
      {
          if (!String.IsNullOrEmpty(fileName))
          {
              PlatformID platformId = Environment.OSVersion.Platform;

              if ((platformId == PlatformID.Win32S) ||
................................................................................
              }
              catch
              {
                  // do nothing.
              }
#endif
          }
#else
          if (processorArchitecture == null)
          {



              //
              // NOTE: On the .NET Compact Framework, attempt to use the native
              //       Win32 API function (via P/Invoke) that can provide us
              //       with the processor architecture.
              //
              try
              {
                  //
                  // NOTE: The output of the GetSystemInfo function will be
                  //       placed here.  Only the processor architecture field
                  //       is used by this method.
                  //
                  SYSTEM_INFO systemInfo;

                  //
                  // NOTE: Query the system information via P/Invoke, thus
                  //       filling the structure.
                  //
                  GetSystemInfo(out systemInfo);

                  //
                  // NOTE: Return the processor architecture value as a string.
                  //
                  processorArchitecture =
                      systemInfo.wProcessorArchitecture.ToString();
              }
              catch
              {
                  // do nothing.
              }

              //
              // NOTE: Upon failure, return an empty string.  This will prevent
              //       the calling method from considering this method call a
              //       "failure".
              //
              processorArchitecture = String.Empty;
          }
#endif

          /////////////////////////////////////////////////////////////////////

          return processorArchitecture;
      }

      /////////////////////////////////////////////////////////////////////////
      /// <summary>
      /// Given the processor architecture, returns the name of the platform.
................................................................................
      /// The processor architecture to be translated to a platform name.
      /// </param>
      /// <returns>
      /// The platform name for the specified processor architecture -OR- null
      /// if it cannot be determined.
      /// </returns>
      private static string GetPlatformName(
          string processorArchitecture /* in */
          )
      {
          if (String.IsNullOrEmpty(processorArchitecture))
              return null;

          lock (staticSyncRoot)
          {
................................................................................
      /// LoadLibrary fails.
      /// </param>
      /// <returns>
      /// Non-zero if the native module was loaded successfully; otherwise,
      /// zero.
      /// </returns>
      private static bool PreLoadSQLiteDll(
          string directory,                /* in */
          string processorArchitecture,    /* in */
          ref string nativeModuleFileName, /* out */
          ref IntPtr nativeModuleHandle    /* out */
          )
      {
          //
          // NOTE: If the specified base directory is null, use the default
          //       (i.e. attempt to automatically detect it).
          //
          if (directory == null)