mirrors/postgres
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fix ILIKE bug (only in multi-byte case)

Browse Source
This commit is contained in:
Tatsuo Ishii 2000-12-11 05:00:18 +00:00
parent e8caadefc4
commit d81fd94d40
1 changed files with 22 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

45
src/backend/utils/adt/like.c
View File

@ -11,7 +11,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/like.c,v 1.42 2000/09/15 18:45:26 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/like.c,v 1.43 2000/12/11 05:00:18 ishii Exp $
*
*-------------------------------------------------------------------------
*/
@ -63,35 +63,34 @@ static int wchareq(unsigned char *p1, unsigned char *p2)
* If they match, returns 1 otherwise returns 0.
*--------------------
*/
#define UCHARMAX 0xff
#define CHARMAX 0x80
static int iwchareq(unsigned char *p1, unsigned char *p2)
{
int c1, c2;
int c1[2], c2[2];
int l;
/* short cut. if *p1 and *p2 is lower than UCHARMAX, then
we assume they are ASCII */
if (*p1 < UCHARMAX && *p2 < UCHARMAX)
/* short cut. if *p1 and *p2 is lower than CHARMAX, then
we could assume they are ASCII */
if (*p1 < CHARMAX && *p2 < CHARMAX)
return(tolower(*p1) == tolower(*p2));
if (*p1 < UCHARMAX)
c1 = tolower(*p1);
else
{
l = pg_mblen(p1);
(void)pg_mb2wchar_with_len(p1, (pg_wchar *)&c1, l);
c1 = tolower(c1);
}
if (*p2 < UCHARMAX)
c2 = tolower(*p2);
else
{
l = pg_mblen(p2);
(void)pg_mb2wchar_with_len(p2, (pg_wchar *)&c2, l);
c2 = tolower(c2);
}
return(c1 == c2);
/* if one of them is an ASCII while the other is not, then
they must be different characters
*/
else if (*p1 < CHARMAX || *p2 < CHARMAX)
return(0);
/* ok, p1 and p2 are both > CHARMAX, then they must be multi-byte
characters
*/
l = pg_mblen(p1);
(void)pg_mb2wchar_with_len(p1, (pg_wchar *)c1, l);
c1[0] = tolower(c1[0]);
l = pg_mblen(p2);
(void)pg_mb2wchar_with_len(p2, (pg_wchar *)c2, l);
c2[0] = tolower(c2[0]);
return(c1[0] == c2[0]);
}
#endif