From 772f20abb0a3a0979c440114bf3a1cff5b3cef03 Mon Sep 17 00:00:00 2001 From: cvpcs Date: Wed, 2 Jun 2010 11:02:31 -0500 Subject: initial import of bash 4.1 --- lib/sh/strcasestr.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 lib/sh/strcasestr.c (limited to 'lib/sh/strcasestr.c') diff --git a/lib/sh/strcasestr.c b/lib/sh/strcasestr.c new file mode 100644 index 0000000..c819b3e --- /dev/null +++ b/lib/sh/strcasestr.c @@ -0,0 +1,46 @@ +/* strcasestr.c - Find if one string appears as a substring of another string, + without regard to case. */ + +/* Copyright (C) 2000 Free Software Foundation, Inc. + + This file is part of GNU Bash, the Bourne Again SHell. + + Bash 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 3 of the License, or + (at your option) any later version. + + Bash 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 Bash. If not, see . +*/ + +#include + +#include +#include + +#include + +/* Determine if s2 occurs in s1. If so, return a pointer to the + match in s1. The compare is case insensitive. This is a + case-insensitive strstr(3). */ +char * +strcasestr (s1, s2) + const char *s1; + const char *s2; +{ + register int i, l, len, c; + + c = TOLOWER ((unsigned char)s2[0]); + len = strlen (s1); + l = strlen (s2); + for (i = 0; (len - i) >= l; i++) + if ((TOLOWER ((unsigned char)s1[i]) == c) && (strncasecmp (s1 + i, s2, l) == 0)) + return ((char *)s1 + i); + return ((char *)0); +} -- cgit v1.1