mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-24 09:43:36 +08:00
56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
/* strstr - find first occurrence of wanted in s
|
|
|
|
Copyright (C) 1989, 1990, 1991, 1992 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. */
|
|
|
|
/* If your compiler is really ansi, then you don't need this. */
|
|
|
|
#if __STDC__ != 1
|
|
|
|
#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 /* not __STDC__ */
|
|
|
|
/* end of strstr.c */
|