Mercurial > gnulib
view lib/posixver.c @ 40198:5a34193cbc07
long-options: add parse_gnu_standard_options_only
Discussed in https://bugs.gnu.org/33468 .
* lib/long-options.c (parse_long_options): Use EXIT_SUCCESS instead
of 0.
(parse_gnu_standard_options_only): Add function to
process the GNU default options --help and --version and fail for any other
unknown long or short option. See
https://gnu.org/prep/standards/html_node/Command_002dLine-Interfaces.html .
* lib/long-options.h (parse_gnu_standard_options_only): Declare it.
* modules/long-options (depends-on): Add stdbool, exitfail.
* top/maint.mk (sc_prohibit_long_options_without_use): Update
syntax-check rule, add new function name.
author | Bernhard Voelker <mail@bernhard-voelker.de> |
---|---|
date | Thu, 29 Nov 2018 09:06:26 +0100 |
parents | b06060465f09 |
children |
line wrap: on
line source
/* Which POSIX version to conform to, for utilities. Copyright (C) 2002-2006, 2009-2019 Free Software Foundation, Inc. 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 of the License, 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 <https://www.gnu.org/licenses/>. */ /* Written by Paul Eggert. */ #include <config.h> #include "posixver.h" #include <limits.h> #include <stdlib.h> #include <unistd.h> #ifndef _POSIX2_VERSION # define _POSIX2_VERSION 0 #endif #ifndef DEFAULT_POSIX2_VERSION # define DEFAULT_POSIX2_VERSION _POSIX2_VERSION #endif /* The POSIX version that utilities should conform to. The default is specified by the system. */ int posix2_version (void) { long int v = DEFAULT_POSIX2_VERSION; char const *s = getenv ("_POSIX2_VERSION"); if (s && *s) { char *e; long int i = strtol (s, &e, 10); if (! *e) v = i; } return v < INT_MIN ? INT_MIN : v < INT_MAX ? v : INT_MAX; }