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Fix bttextcmp() to use unsigned char*.

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#ifdef USE_LOCALE added.
This commit is contained in:
Vadim B. Mikheev
1997-04-18 02:48:05 +00:00
parent cbaa98835c
commit 55f5354380
1 changed files with 29 additions and 9 deletions
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38
src/backend/access/nbtree/nbtcompare.c
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@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtcompare.c,v 1.7 1997/04/07 06:45:41 vadim Exp $
* $Header: /cvsroot/pgsql/src/backend/access/nbtree/nbtcompare.c,v 1.8 1997/04/18 02:48:05 vadim Exp $
*
* NOTES
* These functions are stored in pg_amproc. For each operator class
@@ -134,19 +134,37 @@ btnamecmp(NameData *a, NameData *b)
int32
bttextcmp(struct varlena *a, struct varlena *b)
{
char *ap, *bp;
int len;
unsigned char *ap, *bp;
int res;
#ifdef USE_LOCALE
int la = VARSIZE(a) - VARHDRSZ;
int lb = VARSIZE(b) - VARHDRSZ;
ap = VARDATA(a);
bp = VARDATA(b);
ap = (unsigned char *) palloc (la + 1);
bp = (unsigned char *) palloc (lb + 1);
memcpy(ap, VARDATA(a), la);
*(ap + la) = '\0';
memcpy(bp, VARDATA(b), lb);
*(bp + lb) = '\0';
res = strcoll (ap, bp);
pfree (ap);
pfree (bp);
#else
int len = VARSIZE(a);
/* len is the length of the shorter of the two strings */
if ((len = VARSIZE(a)) > VARSIZE(b))
if ( len > VARSIZE(b) )
len = VARSIZE(b);
/* len includes the four bytes in which string length is stored */
len -= sizeof(VARSIZE(a));
len -= VARHDRSZ;
ap = VARDATA(a);
bp = VARDATA(b);
/*
* If the two strings differ in the first len bytes, or if they're
@@ -161,6 +179,8 @@ bttextcmp(struct varlena *a, struct varlena *b)
len--;
} while (res == 0 && len != 0);
}
#endif
if (res != 0 || VARSIZE(a) == VARSIZE(b))
return (res);