/* 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

 */

#include <stdio.h>

#include <string.h>

#include "mdbtools.h"

/**

 *

 * @param s: String to search within.

 * @param 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':

      return (s[0]=='\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;

      }

  }

}

/**

 *

 * @param s: String to search within.

 * @param r: Case-insensitive search pattern.

 *

 * Tests the string @s to see if it matches the search pattern @r without

 * regard to case; this mimics the behavior of the Access LIKE operator. 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_ilike_cmp(char *s, char *r) {

  char *s1 = g_utf8_casefold(s, -1);

  char *r1 = g_utf8_casefold(r, -1);

  int result = mdb_like_cmp(s1, r1);

  g_free(s1);

  g_free(r1);

  return result;

}