IABSD.fr/xenocara/xserver/os/strcasestr.c

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  Commit

• Author : matthieu
  Date : 2021-11-11 09:03:02
  Hash : e086cf5a
  Message : Update to xserver 21.1.0

• xserver/os/strcasestr.c

• /*-
   * Copyright (c) 1990, 1993
   *      The Regents of the University of California.  All rights reserved.
   *
   * This code is derived from software contributed to Berkeley by
   * Chris Torek.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. 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.
   * 4. Neither the name of the University nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
   */
  
  #ifdef HAVE_DIX_CONFIG_H
  #include <dix-config.h>
  #endif
  
  #include <ctype.h>
  #include <string.h>
  
  /*
   * Find the first occurrence of find in s, ignore case.
   */
  #ifndef HAVE_STRCASESTR
  char *
  xstrcasestr(const char *s, const char *find)
  {
      char c, sc;
      size_t len;
  
      if ((c = *find++) != 0) {
          c = tolower((unsigned char) c);
          len = strlen(find);
          do {
              do {
                  if ((sc = *s++) == 0)
                      return NULL;
              } while ((char) tolower((unsigned char) sc) != c);
          } while (strncasecmp(s, find, len) != 0);
          s--;
      }
      return ((char *) s);
  }
  #endif