From d09154465aeae727e93a4abf54ff8f3bf0bdab76 Mon Sep 17 00:00:00 2001 From: Dirk Hohndel Date: Tue, 13 Apr 2010 09:47:48 -0700 Subject: Add simplistic reimplementation of strcasestr to compat library While all systems that I have access to support strcasestr, it is in fact not part of POSIX. So here's a fallback reimplementation based on POSIX functions. Signed-off-by: Dirk Hohndel Tested-by: Tomas Carnecky (on OpenSolaris snv_134) --- compat/strcasestr.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 compat/strcasestr.c (limited to 'compat/strcasestr.c') diff --git a/compat/strcasestr.c b/compat/strcasestr.c new file mode 100644 index 00000000..62a3a545 --- /dev/null +++ b/compat/strcasestr.c @@ -0,0 +1,40 @@ +/* + * slow simplistic reimplementation of strcasestr for systems that + * don't include it in their library + * + * based on a GPL implementation in OpenTTD found under GPL v2 + + 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, version 2. + + 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., 51 Franklin Street, Fifth Floor, Boston, MA + 02110-1301, USA. */ + +/* Imported into notmuch by Dirk Hohndel - original author unknown. */ + +#include + +#include "compat.h" + +char *strcasestr(const char *haystack, const char *needle) +{ + size_t hay_len = strlen(haystack); + size_t needle_len = strlen(needle); + while (hay_len >= needle_len) { + if (strncasecmp(haystack, needle, needle_len) == 0) + return (char *) haystack; + + haystack++; + hay_len--; + } + + return NULL; +} -- cgit v1.2.3