System.Data.SQLite

Check-in [33b2470a68]
Login

Many hyperlinks are disabled.
Use anonymous login to enable hyperlinks.

Overview
Comment:Some cleanup work. Implement the SQLiteValue helper class.
Downloads: Tarball | ZIP archive
Timelines: family | ancestors | descendants | both | virtualTables
Files: files | file ages | folders
SHA1: 33b2470a683dadaa02d60b71f806707c32dd771a
User & Date: mistachkin 2013-06-07 08:32:49.357
Context
2013-06-07
08:50
Minor adjustments to previous commit. check-in: a900416795 user: mistachkin tags: virtualTables
08:32
Some cleanup work. Implement the SQLiteValue helper class. check-in: 33b2470a68 user: mistachkin tags: virtualTables
02:45
Rename the SQLiteModule class to SQLiteModuleNoop. Adjustments to method and parameter naming conventions. Initial implementation of xOpen virtual table method. check-in: f5c3afbfb1 user: mistachkin tags: virtualTables
Changes
Unified Diff Ignore Whitespace Patch
Changes to System.Data.SQLite/SQLiteModuleBase.cs.
︙︙
18
19
20
21
22
23
24
25
26
27
28



29

30







31




















































32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74


75
76
77
78
79
80
81
82


83
84
85
86
87
88
89

namespace System.Data.SQLite
{
    public sealed class SQLiteContext
    {

    }

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

    public sealed class SQLiteValue
    {



    }









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





















































    public class SQLiteIndexConstraint
    {
        private SQLiteModuleBase.UnsafeNativeMethods2.sqlite3_index_constraint constraint;
    }

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

    public class SQLiteIndexOrderBy
    {
        private SQLiteModuleBase.UnsafeNativeMethods2.sqlite3_index_orderby orderBy;
    }

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

    public class SQLiteIndexConstraintUsage
    {
        private SQLiteModuleBase.UnsafeNativeMethods2.sqlite3_index_constraint_usage constraintUsage;
    }

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

    public class SQLiteIndex
    {
        SQLiteIndexConstraint[] Constraints;
        SQLiteIndexOrderBy[] OrderBys;


        SQLiteIndexConstraintUsage[] ConstraintUsages;

        int idxNum;           /* Number used to identify the index */
        string idxStr;        /* String, possibly obtained from sqlite3_malloc */
        int needToFreeIdxStr; /* Free idxStr using sqlite3_free() if true */
        int orderByConsumed;  /* True if output is already ordered */
        double estimatedCost; /* Estimated cost of using this index */
    }

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

    public class SQLiteVirtualTableCursor
    {
        internal SQLiteModuleBase.UnsafeNativeMethods2.sqlite3_vtab_cursor cursor;
    }



    [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
    public delegate int xFunc(
        IntPtr pContext,
        int argc,
        [MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 1)]
        IntPtr[] argv
    );



    public interface ISQLiteNativeModule
    {
        SQLiteErrorCode xCreate(IntPtr pDb, IntPtr pAux, int argc, ref IntPtr[] argv, ref IntPtr pVtab, ref IntPtr pError);
        SQLiteErrorCode xConnect(IntPtr pDb, IntPtr pAux, int argc, ref IntPtr[] argv, ref IntPtr pVtab, ref IntPtr pError);
        SQLiteErrorCode xBestIndex(IntPtr pVtab, IntPtr index);
        SQLiteErrorCode xDisconnect(IntPtr pVtab);








|



>
>
>
|
>

>
>
>
>
>
>
>
|
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>






|






|






|
















|





>
>








>
>








18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156

namespace System.Data.SQLite
{
    public sealed class SQLiteContext
    {

    }

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

    public sealed class SQLiteValue
    {
        #region Private Data
        private IntPtr pValue;
        #endregion

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

        #region Private Constructors
        internal SQLiteValue(IntPtr pValue)
        {
            this.pValue = pValue;
        }
        #endregion

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

        #region Public Methods
        public TypeAffinity GetTypeAffinity()
        {
            return UnsafeNativeMethods.sqlite3_value_type(pValue);
        }

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

        public int GetBytes()
        {
            return UnsafeNativeMethods.sqlite3_value_bytes(pValue);
        }

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

        public int GetInt()
        {
            return UnsafeNativeMethods.sqlite3_value_int(pValue);
        }

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

        public long GetInt64()
        {
            return UnsafeNativeMethods.sqlite3_value_int64(pValue);
        }

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

        public double GetDouble()
        {
            return UnsafeNativeMethods.sqlite3_value_double(pValue);
        }

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

        public string GetString()
        {
            return SQLiteModuleBase.StringFromUtf8IntPtr(pValue, GetBytes());
        }

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

        public byte[] GetBlob()
        {
            return SQLiteModuleBase.BytesFromIntPtr(pValue, GetBytes());
        }
        #endregion
    }

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

    public class SQLiteIndexConstraint
    {
        private SQLiteModuleBase.UnsafeNativeMethods2.sqlite3_index_constraint constraint;
    }

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

    public class SQLiteIndexOrderBy
    {
        private SQLiteModuleBase.UnsafeNativeMethods2.sqlite3_index_orderby orderBy;
    }

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

    public class SQLiteIndexConstraintUsage
    {
        private SQLiteModuleBase.UnsafeNativeMethods2.sqlite3_index_constraint_usage constraintUsage;
    }

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

    public class SQLiteIndex
    {
        SQLiteIndexConstraint[] Constraints;
        SQLiteIndexOrderBy[] OrderBys;


        SQLiteIndexConstraintUsage[] ConstraintUsages;

        int idxNum;           /* Number used to identify the index */
        string idxStr;        /* String, possibly obtained from sqlite3_malloc */
        int needToFreeIdxStr; /* Free idxStr using sqlite3_free() if true */
        int orderByConsumed;  /* True if output is already ordered */
        double estimatedCost; /* Estimated cost of using this index */
    }

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

    public class SQLiteVirtualTableCursor
    {
        internal SQLiteModuleBase.UnsafeNativeMethods2.sqlite3_vtab_cursor cursor;
    }

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

    [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
    public delegate int xFunc(
        IntPtr pContext,
        int argc,
        [MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 1)]
        IntPtr[] argv
    );

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

    public interface ISQLiteNativeModule
    {
        SQLiteErrorCode xCreate(IntPtr pDb, IntPtr pAux, int argc, ref IntPtr[] argv, ref IntPtr pVtab, ref IntPtr pError);
        SQLiteErrorCode xConnect(IntPtr pDb, IntPtr pAux, int argc, ref IntPtr[] argv, ref IntPtr pVtab, ref IntPtr pError);
        SQLiteErrorCode xBestIndex(IntPtr pVtab, IntPtr index);
        SQLiteErrorCode xDisconnect(IntPtr pVtab);
︙︙
102
103
104
105
106
107
108


109
110
111
112
113
114
115

        SQLiteErrorCode xRollback(IntPtr pVtab);
        SQLiteErrorCode xFindFunction(IntPtr pVtab, int nArg, IntPtr zName, ref xFunc pxFunc, ref IntPtr ppArg);
        SQLiteErrorCode xRename(IntPtr pVtab, IntPtr zNew);
        SQLiteErrorCode xSavepoint(IntPtr pVtab, int iSavepoint);
        SQLiteErrorCode xRelease(IntPtr pVtab, int iSavepoint);
        SQLiteErrorCode xRollbackTo(IntPtr pVtab, int iSavepoint);
    }



    public interface ISQLiteManagedModule
    {
        bool Declared { get; }

        SQLiteErrorCode Create(SQLiteConnection connection, IntPtr pClientData, string[] argv, ref string error);
        SQLiteErrorCode Connect(SQLiteConnection connection, IntPtr pClientData, string[] argv, ref string error);








>
>








169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184

        SQLiteErrorCode xRollback(IntPtr pVtab);
        SQLiteErrorCode xFindFunction(IntPtr pVtab, int nArg, IntPtr zName, ref xFunc pxFunc, ref IntPtr ppArg);
        SQLiteErrorCode xRename(IntPtr pVtab, IntPtr zNew);
        SQLiteErrorCode xSavepoint(IntPtr pVtab, int iSavepoint);
        SQLiteErrorCode xRelease(IntPtr pVtab, int iSavepoint);
        SQLiteErrorCode xRollbackTo(IntPtr pVtab, int iSavepoint);
    }

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

    public interface ISQLiteManagedModule
    {
        bool Declared { get; }

        SQLiteErrorCode Create(SQLiteConnection connection, IntPtr pClientData, string[] argv, ref string error);
        SQLiteErrorCode Connect(SQLiteConnection connection, IntPtr pClientData, string[] argv, ref string error);
︙︙
130
131
132
133
134
135
136


137
138
139
140
141
142
143

        SQLiteErrorCode Rollback();
        SQLiteErrorCode FindFunction(string zName, ref SQLiteFunction function, object[] args);
        SQLiteErrorCode Rename(string zNew);
        SQLiteErrorCode Savepoint(int iSavepoint);
        SQLiteErrorCode Release(int iSavepoint);
        SQLiteErrorCode RollbackTo(int iSavepoint);
    }



#if NET_40
    [SecurityCritical()]
#else
    [SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode = true)]
#endif
    public abstract class SQLiteModuleBase : ISQLiteManagedModule, ISQLiteNativeModule,  IDisposable








>
>








199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214

        SQLiteErrorCode Rollback();
        SQLiteErrorCode FindFunction(string zName, ref SQLiteFunction function, object[] args);
        SQLiteErrorCode Rename(string zNew);
        SQLiteErrorCode Savepoint(int iSavepoint);
        SQLiteErrorCode Release(int iSavepoint);
        SQLiteErrorCode RollbackTo(int iSavepoint);
    }

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

#if NET_40
    [SecurityCritical()]
#else
    [SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode = true)]
#endif
    public abstract class SQLiteModuleBase : ISQLiteManagedModule, ISQLiteNativeModule,  IDisposable
︙︙
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410

                ref IntPtr[] argv,
                ref IntPtr pVtab,
                ref IntPtr pError
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xBestIndex(
                [MarshalAs(UnmanagedType.LPStruct)]
                IntPtr pVtab,
                [MarshalAs(UnmanagedType.LPStruct)]
                IntPtr index
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xDisconnect(
                [MarshalAs(UnmanagedType.LPStruct)]
                IntPtr pVtab
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xDestroy(
                [MarshalAs(UnmanagedType.LPStruct)]
                IntPtr pVtab
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xOpen(
                [MarshalAs(UnmanagedType.LPStruct)]
                IntPtr pVtab,
                ref IntPtr pCursor
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xClose(
                [MarshalAs(UnmanagedType.LPStruct)]
                IntPtr pCursor
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xFilter(
                [MarshalAs(UnmanagedType.LPStruct)]
                IntPtr pCursor,
                int idxNum,
                IntPtr idxStr,
                int argc,
                IntPtr[] argv
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xNext(
                [MarshalAs(UnmanagedType.LPStruct)]
                IntPtr pCursor
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xEof(
                [MarshalAs(UnmanagedType.LPStruct)]
                IntPtr pCursor
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xColumn(
                [MarshalAs(UnmanagedType.LPStruct)]
                IntPtr pCursor,
                IntPtr pContext,
                int index
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xRowId(
                [MarshalAs(UnmanagedType.LPStruct)]
                IntPtr pCursor,
                ref long rowId
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xUpdate(
                [MarshalAs(UnmanagedType.LPStruct)]
                IntPtr pVtab,
                int nData,
                ref IntPtr apData,
                ref long rowId
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xBegin(
                [MarshalAs(UnmanagedType.LPStruct)]
                IntPtr pVtab
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xSync(
                [MarshalAs(UnmanagedType.LPStruct)]
                IntPtr pVtab
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xCommit(
                [MarshalAs(UnmanagedType.LPStruct)]
                IntPtr pVtab
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xRollback(
                [MarshalAs(UnmanagedType.LPStruct)]
                IntPtr pVtab
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xFindFunction(
                [MarshalAs(UnmanagedType.LPStruct)]
                IntPtr pVtab,
                int nArg,
                IntPtr zName,
                ref xFunc pxFunc,
                ref IntPtr ppArg
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xRename(
                [MarshalAs(UnmanagedType.LPStruct)]
                IntPtr pVtab,
                IntPtr zNew
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xSavepoint(
                [MarshalAs(UnmanagedType.LPStruct)]
                IntPtr pVtab,
                int iSavepoint
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xRelease(
                [MarshalAs(UnmanagedType.LPStruct)]
                IntPtr pVtab,
                int iSavepoint
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xRollbackTo(
                [MarshalAs(UnmanagedType.LPStruct)]
                IntPtr pVtab,
                int iSavepoint
            );

            private static readonly int SQLITE_INDEX_CONSTRAINT_EQ = 2;
            private static readonly int SQLITE_INDEX_CONSTRAINT_GT = 4;
            private static readonly int SQLITE_INDEX_CONSTRAINT_LE = 8;








<

<





<





<





<






<





<









<





<





<







<






<








<





<





<





<





<









<






<






<






<








333
334
335
336
337
338
339

340

341
342
343
344
345

346
347
348
349
350

351
352
353
354
355

356
357
358
359
360
361

362
363
364
365
366

367
368
369
370
371
372
373
374
375

376
377
378
379
380

381
382
383
384
385

386
387
388
389
390
391
392

393
394
395
396
397
398

399
400
401
402
403
404
405
406

407
408
409
410
411

412
413
414
415
416

417
418
419
420
421

422
423
424
425
426

427
428
429
430
431
432
433
434
435

436
437
438
439
440
441

442
443
444
445
446
447

448
449
450
451
452
453

454
455
456
457
458
459
460

                ref IntPtr[] argv,
                ref IntPtr pVtab,
                ref IntPtr pError
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xBestIndex(

                IntPtr pVtab,

                IntPtr index
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xDisconnect(

                IntPtr pVtab
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xDestroy(

                IntPtr pVtab
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xOpen(

                IntPtr pVtab,
                ref IntPtr pCursor
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xClose(

                IntPtr pCursor
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xFilter(

                IntPtr pCursor,
                int idxNum,
                IntPtr idxStr,
                int argc,
                IntPtr[] argv
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xNext(

                IntPtr pCursor
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xEof(

                IntPtr pCursor
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xColumn(

                IntPtr pCursor,
                IntPtr pContext,
                int index
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xRowId(

                IntPtr pCursor,
                ref long rowId
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xUpdate(

                IntPtr pVtab,
                int nData,
                ref IntPtr apData,
                ref long rowId
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xBegin(

                IntPtr pVtab
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xSync(

                IntPtr pVtab
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xCommit(

                IntPtr pVtab
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xRollback(

                IntPtr pVtab
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xFindFunction(

                IntPtr pVtab,
                int nArg,
                IntPtr zName,
                ref xFunc pxFunc,
                ref IntPtr ppArg
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xRename(

                IntPtr pVtab,
                IntPtr zNew
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xSavepoint(

                IntPtr pVtab,
                int iSavepoint
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xRelease(

                IntPtr pVtab,
                int iSavepoint
            );

            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            public delegate SQLiteErrorCode xRollbackTo(

                IntPtr pVtab,
                int iSavepoint
            );

            private static readonly int SQLITE_INDEX_CONSTRAINT_EQ = 2;
            private static readonly int SQLITE_INDEX_CONSTRAINT_GT = 4;
            private static readonly int SQLITE_INDEX_CONSTRAINT_LE = 8;
︙︙
483
484
485
486
487
488
489

















490
491
492
493
494
495
496

        private static void Free(IntPtr pMemory)
        {
            UnsafeNativeMethods.sqlite3_free(pMemory);
        }

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


















        private static int ProbeForUtf8ByteLength(IntPtr pValue, int limit)
        {
            int length = 0;

            if (pValue != IntPtr.Zero)
            {
                do








>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>








533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563

        private static void Free(IntPtr pMemory)
        {
            UnsafeNativeMethods.sqlite3_free(pMemory);
        }

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

        internal static byte[] BytesFromIntPtr(IntPtr pValue, int length)
        {
            if (pValue == IntPtr.Zero)
                return null;

            if (length == 0)
                return new byte[0];

            byte[] result = new byte[length];

            Marshal.Copy(pValue, result, 0, length);

            return result;
        }

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

        private static int ProbeForUtf8ByteLength(IntPtr pValue, int limit)
        {
            int length = 0;

            if (pValue != IntPtr.Zero)
            {
                do
︙︙
506
507
508
509
510
511
512
513









514
515
516
517
518
519
520
521
522

523

524
525
526
527
528
529
530

            }

            return length;
        }

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

        private static string StringFromUtf8IntPtr(IntPtr pValue)









        {
            if (pValue == IntPtr.Zero)
                return null;

            int length = ProbeForUtf8ByteLength(pValue, ThirtyBits);

            if (length > 0)
            {
                byte[] bytes = new byte[length];

                Marshal.Copy(pValue, bytes, 0, length);

                return GetStringFromUtf8Bytes(bytes);
            }

            return String.Empty;
        }

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








|
>
>
>
>
>
>
>
>
>




<
<



>

>








573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593


594
595
596
597
598
599
600
601
602
603
604
605
606

            }

            return length;
        }

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

        internal static string StringFromUtf8IntPtr(IntPtr pValue)
        {
            int length = ProbeForUtf8ByteLength(pValue, ThirtyBits);

            return StringFromUtf8IntPtr(pValue, length);
        }

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

        internal static string StringFromUtf8IntPtr(IntPtr pValue, int length)
        {
            if (pValue == IntPtr.Zero)
                return null;



            if (length > 0)
            {
                byte[] bytes = new byte[length];

                Marshal.Copy(pValue, bytes, 0, length);

                return GetStringFromUtf8Bytes(bytes);
            }

            return String.Empty;
        }

        ///////////////////////////////////////////////////////////////////////
︙︙