Mercurial > gnulib
view lib/mbsspn.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 |
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/* Searching a string for a character outside a given set of characters. Copyright (C) 1999, 2002, 2006-2019 Free Software Foundation, Inc. Written by Bruno Haible <bruno@clisp.org>, 2007. 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/>. */ #include <config.h> /* Specification. */ #include <string.h> #include "mbuiter.h" /* Find the first occurrence in the character string STRING of any character not in the character string REJECT. Return the number of bytes from the beginning of the string to this occurrence, or to the end of the string if none exists. */ size_t mbsspn (const char *string, const char *reject) { /* Optimize two cases. */ if (reject[0] == '\0') return 0; if (reject[1] == '\0') { unsigned char uc = (unsigned char) reject[0]; if (MB_CUR_MAX > 1) { mbui_iterator_t iter; for (mbui_init (iter, string); mbui_avail (iter); mbui_advance (iter)) if (!(mb_len (mbui_cur (iter)) == 1 && (unsigned char) * mbui_cur_ptr (iter) == uc)) break; return mbui_cur_ptr (iter) - string; } else { const char *ptr; for (ptr = string; *ptr != '\0'; ptr++) if ((unsigned char) *ptr != uc) break; return ptr - string; } } /* General case. */ if (MB_CUR_MAX > 1) { mbui_iterator_t iter; for (mbui_init (iter, string); mbui_avail (iter); mbui_advance (iter)) { if (mb_len (mbui_cur (iter)) == 1) { if (mbschr (reject, * mbui_cur_ptr (iter)) == NULL) goto found; } else { mbui_iterator_t aiter; for (mbui_init (aiter, reject);; mbui_advance (aiter)) { if (!mbui_avail (aiter)) goto found; if (mb_equal (mbui_cur (aiter), mbui_cur (iter))) break; } } } found: return mbui_cur_ptr (iter) - string; } else return strspn (string, reject); }