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/* strstr - find first occurrence of wanted in s
Copyright (C) 1989, 1990, 1991 Free Software Foundation.
This file is part of GAS, the GNU Assembler.
GAS 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 1, or (at your option)
any later version.
GAS 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 GAS; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* static const char rcsid[] = "$Id$"; */
/* If your compiler is really ansi, then you don't need this. */
#ifndef __STDC__
#define SIZET int
#define NULL 0
#include <string.h>
char * /* found string, or NULL if none */
strstr(s, wanted)
char *s;
char *wanted;
{
register char *scan;
register SIZET len;
register char firstc;
/*
* The odd placement of the two tests is so "" is findable.
* Also, we inline the first char for speed.
* The ++ on scan has been moved down for optimization.
*/
firstc = *wanted;
len = strlen(wanted);
for (scan = s; *scan != firstc || strncmp(scan, wanted, len) != 0; )
if (*scan++ == '\0')
return(NULL);
return(scan);
} /* strstr() */
#endif /* __STDC__ */
/* end of strstr.c */
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