/* $Id: char.c 3502 2014-11-30 12:26:48Z mskala $ */
/* Copyright (C) 2000-2002 by George Williams */
/*
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * The name of the author may not be used to endorse or promote products
 * derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#include <stdlib.h>
#include <string.h>
#include <utype.h>
#include "ustring.h"

int strmatch(const char *str1, const char *str2) {
   int ch1, ch2;

   while (1) {
      ch1 = *str1++;
      ch2 = *str2++;
      ch1 = tolower(ch1);
      ch2 = tolower(ch2);
      if (ch1 != ch2 || ch1 == '\0')
	 return (ch1 - ch2);
   }
}

int strnmatch(const char *str1, const char *str2, int n) {
   int ch1, ch2;

   for (; n-- > 0;) {
      ch1 = *str1++;
      ch2 = *str2++;
      ch1 = tolower(ch1);
      ch2 = tolower(ch2);
      if (ch1 != ch2 || ch1 == '\0')
	 return (ch1 - ch2);
   }
   return (0);
}

char *strstrmatch(const char *longer, const char *substr) {
   int ch1, ch2;

   const char *lpt, *str1, *str2;

   for (lpt = longer; *lpt != '\0'; ++lpt) {
      str1 = lpt;
      str2 = substr;
      while (1) {
	 ch1 = *str1++;
	 ch2 = *str2++;
	 ch1 = tolower(ch1);
	 ch2 = tolower(ch2);
	 if (ch2 == '\0')
	    return ((char *) lpt);
	 if (ch1 != ch2)
	    break;
      }
   }
   return (NULL);
}
