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Fix compare bug for tsvector: problem was in aligment. Per Stefan Kaltenbrunner <stefan@kaltenbrunner.cc> and Phil Frost <indigo@bitglue.com>

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This commit is contained in:
Teodor Sigaev 2006-08-24 17:37:34 +00:00
parent 726ede7370
commit 8f91e2b607
1 changed files with 34 additions and 8 deletions
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42
contrib/tsearch2/tsvector.c
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@ -966,17 +966,43 @@ silly_cmp_tsvector(const tsvector * a, const tsvector * b)
return 1;
else
{
unsigned char *aptr = (unsigned char *) (a->data) + DATAHDRSIZE;
unsigned char *bptr = (unsigned char *) (b->data) + DATAHDRSIZE;
WordEntry *aptr = ARRPTR(a);
WordEntry *bptr = ARRPTR(b);
int i = 0;
int res;
while (aptr - ((unsigned char *) (a->data)) < a->len)
{
if (*aptr != *bptr)
return (*aptr < *bptr) ? -1 : 1;
aptr++;
bptr++;
for(i=0;i<a->size;i++) {
if ( aptr->haspos != bptr->haspos ) {
return ( aptr->haspos > bptr->haspos ) ? -1 : 1;
} else if ( aptr->pos != bptr->pos ) {
return ( aptr->pos > bptr->pos ) ? -1 : 1;
} else if ( aptr->len != bptr->len ) {
return ( aptr->len > bptr->len ) ? -1 : 1;
} else if ( (res=strncmp(STRPTR(a) + aptr->pos, STRPTR(b) + bptr->pos, b->len))!= 0 ) {
return res;
} else if ( aptr->haspos ) {
WordEntryPos *ap = POSDATAPTR(a, aptr);
WordEntryPos *bp = POSDATAPTR(b, bptr);
int j;
if ( POSDATALEN(a, aptr) != POSDATALEN(b, bptr) )
return ( POSDATALEN(a, aptr) > POSDATALEN(b, bptr) ) ? -1 : 1;
for(j=0;j<POSDATALEN(a, aptr);j++) {
if ( WEP_GETPOS(*ap) != WEP_GETPOS(*bp) ) {
return ( WEP_GETPOS(*ap) > WEP_GETPOS(*bp) ) ? -1 : 1;
} else if ( WEP_GETWEIGHT(*ap) != WEP_GETWEIGHT(*bp) ) {
return ( WEP_GETWEIGHT(*ap) > WEP_GETWEIGHT(*bp) ) ? -1 : 1;
}
ap++, bp++;
}
}
aptr++; bptr++;
}
}
return 0;
}