Mercurial > hg > octave-lyh > gnulib-hg
changeset 6047:085fe0908938
New module 'strnlen1'.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Tue, 16 Aug 2005 12:12:13 +0000 |
parents | 455e151721e5 |
children | 5943d7de8c5d |
files | ChangeLog MODULES.html.sh lib/ChangeLog lib/strnlen1.c lib/strnlen1.h modules/strnlen1 |
diffstat | 6 files changed, 115 insertions(+), 0 deletions(-) [+] |
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--- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,8 @@ +2005-08-16 Bruno Haible <bruno@clisp.org> + + * modules/strnlen1: New file. + * MODULES.html.sh (String handling): Add strnlen1. + 2005-08-16 Bruno Haible <bruno@clisp.org> * modules/mbfile: New file.
--- a/MODULES.html.sh +++ b/MODULES.html.sh @@ -1520,6 +1520,7 @@ func_module strchrnul func_module strdup func_module strnlen + func_module strnlen1 func_module strndup func_module strsep #func_module fstrcmp
--- a/lib/ChangeLog +++ b/lib/ChangeLog @@ -1,3 +1,8 @@ +2005-08-16 Bruno Haible <bruno@clisp.org> + + * strnlen1.h: New file. + * strnlen1.c: New file. + 2005-08-16 Bruno Haible <bruno@clisp.org> * mbfile.h: New file.
new file mode 100644 --- /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; +}
new file mode 100644 --- /dev/null +++ b/lib/strnlen1.h @@ -0,0 +1,41 @@ +/* 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. */ + +#ifndef _STRNLEN1_H +#define _STRNLEN1_H + +#include <stddef.h> + + +#ifdef __cplusplus +extern "C" { +#endif + + +/* 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. */ +extern size_t strnlen1 (const char *string, size_t maxlen); + + +#ifdef __cplusplus +} +#endif + + +#endif /* _STRNLEN1_H */
new file mode 100644 --- /dev/null +++ b/modules/strnlen1 @@ -0,0 +1,24 @@ +Description: +Quick string length estimation. + +Files: +lib/strnlen1.h +lib/strnlen1.c + +Depends-on: +memchr + +configure.ac: + +Makefile.am: +lib_SOURCES += strnlen1.h strnlen1.c + +Include: +"strnlen1.h" + +License: +LGPL + +Maintainer: +Bruno Haible +