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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 06:17:24 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 06:17:24 +0000 |
commit | 9d8085074991d5c0a42d6fc96a2d1a3ee918aad1 (patch) | |
tree | c85bca1e6c11eb872edfc64c524d20f2b7e3307b /lib/sh/strcasestr.c | |
parent | Initial commit. (diff) | |
download | bash-70baf9b08adef67074da9e233fa847220a474b78.tar.xz bash-70baf9b08adef67074da9e233fa847220a474b78.zip |
Adding upstream version 5.1.upstream/5.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'lib/sh/strcasestr.c')
-rw-r--r-- | lib/sh/strcasestr.c | 46 |
1 files changed, 46 insertions, 0 deletions
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 <http://www.gnu.org/licenses/>. +*/ + +#include <config.h> + +#include <bashansi.h> +#include <chartypes.h> + +#include <stdc.h> + +/* 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); +} |