Mercurial > gnulib
view lib/filevercmp.h @ 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 |
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/* Copyright (C) 1995 Ian Jackson <iwj10@cus.cam.ac.uk> Copyright (C) 2001 Anthony Towns <aj@azure.humbug.org.au> Copyright (C) 2008-2019 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/>. */ #ifndef FILEVERCMP_H #define FILEVERCMP_H /* Compare version strings: This function compares strings S1 and S2: 1) By PREFIX in the same way as strcmp. 2) Then by VERSION (most similarly to version compare of Debian's dpkg). Leading zeros in version numbers are ignored. 3) If both (PREFIX and VERSION) are equal, strcmp function is used for comparison. So this function can return 0 if (and only if) strings S1 and S2 are identical. It returns number >0 for S1 > S2, 0 for S1 == S2 and number <0 for S1 < S2. This function compares strings, in a way that if VER1 and VER2 are version numbers and PREFIX and SUFFIX (SUFFIX defined as (\.[A-Za-z~][A-Za-z0-9~]*)*) are strings then VER1 < VER2 implies filevercmp (PREFIX VER1 SUFFIX, PREFIX VER2 SUFFIX) < 0. This function is intended to be a replacement for strverscmp. */ int filevercmp (const char *s1, const char *s2) _GL_ATTRIBUTE_PURE; #endif /* FILEVERCMP_H */