/* 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 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 */