[deliverable/binutils-gdb.git] / gas / strstr.c

/* 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 2, 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 */
Commit	Line	Data
fecd2382 RP	1	/* strstr - find first occurrence of wanted in s
	2	Copyright (C) 1989, 1990, 1991 Free Software Foundation.
	3
	4	This file is part of GAS, the GNU Assembler.
	5
	6	GAS is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
6026cd06	8	the Free Software Foundation; either version 2, or (at your option)
fecd2382 RP	9	any later version.
	10
	11	GAS is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with GAS; see the file COPYING. If not, write to
	18	the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
	19
	20	/* static const char rcsid[] = "$Id$"; */
	21
	22	/* If your compiler is really ansi, then you don't need this. */
	23	#ifndef __STDC__
	24
	25	#define SIZET int
	26
	27	#define NULL 0
	28
	29	#include <string.h>
	30
	31	char * /* found string, or NULL if none */
	32	strstr(s, wanted)
	33	char *s;
	34	char *wanted;
	35	{
	36	register char *scan;
	37	register SIZET len;
	38	register char firstc;
	39
	40	/*
	41	* The odd placement of the two tests is so "" is findable.
	42	* Also, we inline the first char for speed.
	43	* The ++ on scan has been moved down for optimization.
	44	*/
	45	firstc = *wanted;
	46	len = strlen(wanted);
	47	for (scan = s; *scan != firstc \|\| strncmp(scan, wanted, len) != 0; )
	48	if (*scan++ == '\0')
	49	return(NULL);
	50	return(scan);
	51	} /* strstr() */
	52
	53	#endif /* __STDC__ */
	54
	55	/* end of strstr.c */