Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Overview
| Comment: | Save a few bytes in utf.c. (CVS 1981) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
8154d545e8ae3d22490b49ce4f327605 |
| User & Date: | drh 2004-09-24 23:20:52 |
Context
|
2004-09-24
| ||
| 23:59 | Size optimizations in vdbeapi.c. (CVS 1982) check-in: b2f3d4bb user: drh tags: trunk | |
| 23:20 | Save a few bytes in utf.c. (CVS 1981) check-in: 8154d545 user: drh tags: trunk | |
| 22:32 | Optimizations to vdbeaux.c and printf.c (CVS 1980) check-in: eabc77c9 user: drh tags: trunk | |
Changes
Changes to src/utf.c.
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
...
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
|
** 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: utf.c,v 1.28 2004/08/31 00:52:37 drh 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 ................................................................................ if( pMem->enc==SQLITE_UTF8 ){ if( desiredEnc==SQLITE_UTF16LE ){ /* UTF-8 -> UTF-16 Little-endian */ while( zIn<zTerm ){ READ_UTF8(zIn, c); WRITE_UTF16LE(z, c); } WRITE_UTF16LE(z, 0); pMem->n = (z-zOut)-2; }else if( desiredEnc==SQLITE_UTF16BE ){ /* UTF-8 -> UTF-16 Big-endian */ while( zIn<zTerm ){ READ_UTF8(zIn, c); WRITE_UTF16BE(z, c); } WRITE_UTF16BE(z, 0); pMem->n = (z-zOut)-2; } }else{ assert( desiredEnc==SQLITE_UTF8 ); if( pMem->enc==SQLITE_UTF16LE ){ /* UTF-16 Little-endian -> UTF-8 */ while( zIn<zTerm ){ READ_UTF16LE(zIn, c); WRITE_UTF8(z, c); } WRITE_UTF8(z, 0); pMem->n = (z-zOut)-1; }else{ /* UTF-16 Little-endian -> UTF-8 */ while( zIn<zTerm ){ READ_UTF16BE(zIn, c); WRITE_UTF8(z, c); } WRITE_UTF8(z, 0); pMem->n = (z-zOut)-1; } } assert( (pMem->n+(desiredEnc==SQLITE_UTF8?1:2))<=len ); sqlite3VdbeMemRelease(pMem); pMem->flags &= ~(MEM_Static|MEM_Dyn|MEM_Ephem|MEM_Short); pMem->enc = desiredEnc; if( zOut==zShort ){ memcpy(pMem->zShort, zOut, len); |
|
|
|
<
<
<
>
>
<
<
<
<
>
>
|
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
...
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
|
** 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: utf.c,v 1.29 2004/09/24 23:20:52 drh 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 ................................................................................ if( pMem->enc==SQLITE_UTF8 ){ if( desiredEnc==SQLITE_UTF16LE ){ /* UTF-8 -> UTF-16 Little-endian */ while( zIn<zTerm ){ READ_UTF8(zIn, c); WRITE_UTF16LE(z, c); } }else{ assert( desiredEnc==SQLITE_UTF16BE ); /* UTF-8 -> UTF-16 Big-endian */ while( zIn<zTerm ){ READ_UTF8(zIn, c); WRITE_UTF16BE(z, c); } } pMem->n = z - zOut; *z++ = 0; }else{ assert( desiredEnc==SQLITE_UTF8 ); if( pMem->enc==SQLITE_UTF16LE ){ /* UTF-16 Little-endian -> UTF-8 */ while( zIn<zTerm ){ READ_UTF16LE(zIn, c); WRITE_UTF8(z, c); } }else{ /* UTF-16 Little-endian -> UTF-8 */ while( zIn<zTerm ){ READ_UTF16BE(zIn, c); WRITE_UTF8(z, c); } } pMem->n = z - zOut; } *z = 0; assert( (pMem->n+(desiredEnc==SQLITE_UTF8?1:2))<=len ); sqlite3VdbeMemRelease(pMem); pMem->flags &= ~(MEM_Static|MEM_Dyn|MEM_Ephem|MEM_Short); pMem->enc = desiredEnc; if( zOut==zShort ){ memcpy(pMem->zShort, zOut, len); |