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author | Bruno Haible <bruno@clisp.org> | 2005-08-16 12:12:13 +0000 |
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committer | Bruno Haible <bruno@clisp.org> | 2005-08-16 12:12:13 +0000 |
commit | 2ab91a62459231f30626fabdc1003eb52b302894 (patch) | |
tree | 0fd73905ec705cf3f4d86839f8dec9b3f55528c1 /lib/strnlen1.c | |
parent | 07ca91adc3957e0066d8813468a71047b5bc1db0 (diff) | |
download | gnulib-2ab91a62459231f30626fabdc1003eb52b302894.tar.gz |
New module 'strnlen1'.
Diffstat (limited to 'lib/strnlen1.c')
-rw-r--r-- | lib/strnlen1.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/lib/strnlen1.c b/lib/strnlen1.c new file mode 100644 index 0000000000..6cc2da8dfe --- /dev/null +++ b/lib/strnlen1.c @@ -0,0 +1,39 @@ +/* Find the length of STRING + 1, but scan at most MAXLEN bytes. + Copyright (C) 2005 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU Library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library 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. */ + +#if HAVE_CONFIG_H +# include <config.h> +#endif + +/* Specification. */ +#include "strnlen1.h" + +#include <string.h> + +/* Find the length of STRING + 1, but scan at most MAXLEN bytes. + If no '\0' terminator is found in that many characters, return MAXLEN. */ +/* This is the same as strnlen (string, maxlen - 1) + 1. */ +size_t +strnlen1 (const char *string, size_t maxlen) +{ + const char *end = memchr (string, '\0', maxlen); + if (end != NULL) + return end - string + 1; + else + return maxlen; +} |