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/* MDB Tools - A library for reading MS Access database file
* Copyright (C) 2000 Brian Bruns
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <stdio.h>
#include <string.h>
#include <mdbtools.h>
#ifdef DMALLOC
#include "dmalloc.h"
#endif
/**
* mdb_like_cmp
* @s: String to search within.
* @r: Search pattern.
*
* Tests the string @s to see if it matches the search pattern @r. In the
* search pattern, a percent sign indicates matching on any number of
* characters, and an underscore indicates matching any single character.
*
* Returns: 1 if the string matches, 0 if the string does not match.
*/
int mdb_like_cmp(char *s, char *r)
{
unsigned int i;
int ret;
mdb_debug(MDB_DEBUG_LIKE, "comparing %s and %s", s, r);
switch (r[0]) {
case '\0':
if (s[0]=='\0') {
return 1;
} else {
return 0;
}
case '_':
/* skip one character */
return mdb_like_cmp(&s[1],&r[1]);
case '%':
/* skip any number of characters */
/* the strlen(s)+1 is important so the next call can */
/* if there are trailing characters */
for(i=0;i<strlen(s)+1;i++) {
if (mdb_like_cmp(&s[i],&r[1])) {
return 1;
}
}
return 0;
default:
for(i=0;i<strlen(r);i++) {
if (r[i]=='_' || r[i]=='%') break;
}
if (strncmp(s,r,i)) {
return 0;
} else {
mdb_debug(MDB_DEBUG_LIKE, "at pos %d comparing %s and %s", i, &s[i], &r[i]);
ret = mdb_like_cmp(&s[i],&r[i]);
mdb_debug(MDB_DEBUG_LIKE, "returning %d (%s and %s)", ret, &s[i], &r[i]);
return ret;
}
}
}
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