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