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Functions on 'text' type updated to new fmgr style. 'text' is

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now TOAST-able.
This commit is contained in:
Tom Lane
2000-07-06 05:48:31 +00:00
parent 40f64064ff
commit 8ecac94bb2
20 changed files with 756 additions and 693 deletions
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66
src/backend/utils/adt/like.c
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@@ -11,15 +11,16 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/like.c,v 1.35 2000/06/14 18:59:42 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/like.c,v 1.36 2000/07/06 05:48:11 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "mb/pg_wchar.h"
#include "utils/builtins.h"
static int like(pg_wchar * text, pg_wchar * p);
static bool like(pg_wchar * text, pg_wchar * p);
/*
* interface routines called by the function manager
@@ -30,20 +31,17 @@ static int like(pg_wchar * text, pg_wchar * p);
a generic fixed length like routine
s - the string to match against (not necessarily null-terminated)
p - the pattern
p - the pattern (as text*)
charlen - the length of the string
*/
static bool
fixedlen_like(char *s, struct varlena * p, int charlen)
fixedlen_like(char *s, text *p, int charlen)
{
pg_wchar *sterm,
*pterm;
int result;
bool result;
int len;
if (!s || !p)
return FALSE;
/* be sure sterm is null-terminated */
#ifdef MULTIBYTE
sterm = (pg_wchar *) palloc((charlen + 1) * sizeof(pg_wchar));
@@ -54,7 +52,7 @@ fixedlen_like(char *s, struct varlena * p, int charlen)
#endif
/*
* p is a text = varlena, not a string so we have to make a string
* p is a text, not a string so we have to make a string
* from the vl_data field of the struct.
*/
@@ -65,8 +63,8 @@ fixedlen_like(char *s, struct varlena * p, int charlen)
(void) pg_mb2wchar_with_len((unsigned char *) VARDATA(p), pterm, len);
#else
pterm = (char *) palloc(len + 1);
memmove(pterm, VARDATA(p), len);
*(pterm + len) = (char) NULL;
memcpy(pterm, VARDATA(p), len);
*(pterm + len) = '\0';
#endif
/* do the regexp matching */
@@ -75,35 +73,43 @@ fixedlen_like(char *s, struct varlena * p, int charlen)
pfree(sterm);
pfree(pterm);
return (bool) result;
return result;
}
bool
namelike(NameData *n, struct varlena * p)
Datum
namelike(PG_FUNCTION_ARGS)
{
if (!n)
return FALSE;
return fixedlen_like(NameStr(*n), p, NAMEDATALEN);
Name n = PG_GETARG_NAME(0);
text *p = PG_GETARG_TEXT_P(1);
PG_RETURN_BOOL(fixedlen_like(NameStr(*n), p, strlen(NameStr(*n))));
}
bool
namenlike(NameData *s, struct varlena * p)
Datum
namenlike(PG_FUNCTION_ARGS)
{
return !namelike(s, p);
Name n = PG_GETARG_NAME(0);
text *p = PG_GETARG_TEXT_P(1);
PG_RETURN_BOOL(! fixedlen_like(NameStr(*n), p, strlen(NameStr(*n))));
}
bool
textlike(struct varlena * s, struct varlena * p)
Datum
textlike(PG_FUNCTION_ARGS)
{
if (!s)
return FALSE;
return fixedlen_like(VARDATA(s), p, VARSIZE(s) - VARHDRSZ);
text *s = PG_GETARG_TEXT_P(0);
text *p = PG_GETARG_TEXT_P(1);
PG_RETURN_BOOL(fixedlen_like(VARDATA(s), p, VARSIZE(s) - VARHDRSZ));
}
bool
textnlike(struct varlena * s, struct varlena * p)
Datum
textnlike(PG_FUNCTION_ARGS)
{
return !textlike(s, p);
text *s = PG_GETARG_TEXT_P(0);
text *p = PG_GETARG_TEXT_P(1);
PG_RETURN_BOOL(! fixedlen_like(VARDATA(s), p, VARSIZE(s) - VARHDRSZ));
}
@@ -221,11 +227,11 @@ DoMatch(pg_wchar * text, pg_wchar * p)
/*
** User-level routine. Returns TRUE or FALSE.
*/
static int
static bool
like(pg_wchar * text, pg_wchar * p)
{
/* Fast path for match-everything pattern */
if (p[0] == '%' && p[1] == '\0')
return TRUE;
return true;
return DoMatch(text, p) == LIKE_TRUE;
}