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author | Lorry Tar Creator <lorry-tar-importer@lorry> | 2016-04-22 04:38:07 +0000 |
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committer | Lorry Tar Creator <lorry-tar-importer@lorry> | 2016-04-22 04:38:07 +0000 |
commit | 28ef1abc10cfbc2c3d2747c008eb2300858d0426 (patch) | |
tree | 41208fb8f393e6cb6cc8f939623ad47a0db17876 /lib/strnlen.c | |
download | grep-tarball-28ef1abc10cfbc2c3d2747c008eb2300858d0426.tar.gz |
Diffstat (limited to 'lib/strnlen.c')
-rw-r--r-- | lib/strnlen.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/lib/strnlen.c b/lib/strnlen.c new file mode 100644 index 0000000..1bd7936 --- /dev/null +++ b/lib/strnlen.c @@ -0,0 +1,30 @@ +/* Find the length of STRING, but scan at most MAXLEN characters. + Copyright (C) 2005-2007, 2009-2016 Free Software Foundation, Inc. + Written by Simon Josefsson. + + 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 3, 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, see <http://www.gnu.org/licenses/>. */ + +#include <config.h> + +#include <string.h> + +/* Find the length of STRING, but scan at most MAXLEN characters. + If no '\0' terminator is found in that many characters, return MAXLEN. */ + +size_t +strnlen (const char *string, size_t maxlen) +{ + const char *end = memchr (string, '\0', maxlen); + return end ? (size_t) (end - string) : maxlen; +} |