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authorK. Richard Pixley <rich@cygnus>1991-04-04 18:19:53 +0000
committerK. Richard Pixley <rich@cygnus>1991-04-04 18:19:53 +0000
commitfecd2382e77b89f12c9d630ed4e42e9a54ba6953 (patch)
tree6cddf76f492c3485605175c97c13d9a24c65306f /gas/strstr.c
parentb6fc45ca4c306a4f6f6bdbaf90a69d3dab62777a (diff)
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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 */