Initial revision

1 files changed, 49 insertions, 0 deletions

diff --git a/lib/strstr.c b/lib/strstr.c
new file mode 100644
index 000000000..6c67d9f92
--- /dev/null
+++ b/lib/strstr.c
@@ -0,0 +1,49 @@
+/* strstr.c -- return the offset of one string within another
+   Copyright (C) 1989, 1990 Free Software Foundation, Inc.
+
+   This program 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.
+
+   This program 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 this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* Author:
+	Mike Rendell			Department of Computer Science
+	michael@garfield.mun.edu	Memorial University of Newfoundland
+	..!uunet!garfield!michael	St. John's, Nfld., Canada
+	(709) 737-4550			A1C 5S7
+*/
+
+/* Return the starting address of string S2 in S1;
+   return 0 if it is not found. */
+
+char *
+strstr (s1, s2)
+     char *s1;
+     char *s2;
+{
+  int i;
+  char *p1;
+  char *p2;
+  char *s = s1;
+
+  for (p2 = s2, i = 0; *s; p2 = s2, i++, s++)
+    {
+      for (p1 = s; *p1 && *p2 && *p1 == *p2; p1++, p2++)
+	;
+      if (!*p2)
+	break;
+    }
+  if (!*p2)
+    return s1 + i;
+
+  return 0;
+}