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/*
* hfsutils - tools for reading and writing Macintosh HFS volumes
* Copyright (C) 1996-1998 Robert Leslie
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id: strstr.c,v 1.5 1998/04/11 08:27:00 rob Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
/*
* NAME: strstr()
* DESCRIPTION: locate a substring
*/
char *strstr(const char *haystack, const char *needle)
{
register const char *hptr, *nptr;
if (*needle == 0)
return haystack;
while (*haystack)
{
if (*haystack++ != *needle)
continue;
hptr = haystack;
nptr = needle + 1;
while (1)
{
if (*nptr == 0)
return haystack - 1;
if (*hptr++ != *nptr++)
break;
}
}
return 0;
}
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