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Overview
| Comment: | Check-in [19064d7cea] broke the pTail return on sqlite3_prepare16() when the SQL contained surrogates. This check-in restores correct function. Part of ticket [3fe897352e]. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | 65b1e3a4c31f6cb6fd3f600701658b0cdbee603f |
| User & Date: | drh 2009-10-24 01:55:15 |
Context
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2009-10-24
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| 02:00 | In shell, changed ".tables" command to not add '%' to specified pattern. This is consistent with other commands that take a LIKE pattern (.dump, .schema, .indices). Updated internal help to better describe LIKE pattern usage. Fixed a few more inconsistencies in error messages. Ticket [6da68f691b]. check-in: 7201244e user: shane tags: trunk | |
| 01:55 | Check-in [19064d7cea] broke the pTail return on sqlite3_prepare16() when the SQL contained surrogates. This check-in restores correct function. Part of ticket [3fe897352e]. check-in: 65b1e3a4 user: drh tags: trunk | |
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2009-10-23
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| 18:15 | Make sure that UTF16 to UTF8 conversions to not read past the end of the UTF16 input buffer if the last two bytes of the UTF16 happen to be the first half of a surrogate pair. Ticket [3fe897352e] check-in: 19064d7c user: drh tags: trunk | |
Changes
Changes to src/utf.c.
484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 |
** pZ is a UTF-16 encoded unicode string at least nChar characters long.
** Return the number of bytes in the first nChar unicode characters
** in pZ. nChar must be non-negative.
*/
int sqlite3Utf16ByteLen(const void *zIn, int nChar){
int c;
unsigned char const *z = zIn;
unsigned char const *zTerm = &z[nChar];
int n = 0;
if( SQLITE_UTF16NATIVE==SQLITE_UTF16BE ){
/* Using an "if (SQLITE_UTF16NATIVE==SQLITE_UTF16BE)" construct here
** and in other parts of this file means that at one branch will
** not be covered by coverage testing on any single host. But coverage
** will be complete if the tests are run on both a little-endian and
** big-endian host. Because both the UTF16NATIVE and SQLITE_UTF16BE
** macros are constant at compile time the compiler can determine
|
| > > > > > > |
484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 |
** pZ is a UTF-16 encoded unicode string at least nChar characters long.
** Return the number of bytes in the first nChar unicode characters
** in pZ. nChar must be non-negative.
*/
int sqlite3Utf16ByteLen(const void *zIn, int nChar){
int c;
unsigned char const *z = zIn;
unsigned char const *zTerm;
int n = 0;
/* Some of the characters might be surrogates. Be careful not to terminate
** the string too early because of them. In the worst case, all characters
** or surrogates so make the terminator 2*nChar from the beginning. */
zTerm = &z[nChar*2];
if( SQLITE_UTF16NATIVE==SQLITE_UTF16BE ){
/* Using an "if (SQLITE_UTF16NATIVE==SQLITE_UTF16BE)" construct here
** and in other parts of this file means that at one branch will
** not be covered by coverage testing on any single host. But coverage
** will be complete if the tests are run on both a little-endian and
** big-endian host. Because both the UTF16NATIVE and SQLITE_UTF16BE
** macros are constant at compile time the compiler can determine
|