15c6926126
* Add gnulib files generated by gnulib-tool in build-aux, m4 and
grub-core/gnulib directories
* .bzignore: Add **/.deps and autogenerated gnulib files
* configure.ac: Assign auxiliary directory to build-aux, add invocation
of gnulib macros, add grub-core/gnulib/Makefile
* Makefile.am: Add gnulib directory in SUBDIRS (removing unnecessary .),
include m4 directory to aclocal.
* Makefile.util.def: Remove direct compilation of gnulib source files
and use the new grub-core/gnulib/libgnu.a.
* build-aux/config.rpath: move config.rpath from top directory to
build-aux
* conf/Makefile.common: Remove the macro _GL_UNUSED already defined
in gnulib headers
* conf/Makefile.extra-dist: Add m4/gnulib-cache.m4
* grub-core/Makefile.core.def: Remove unnecessary extra_dist
* grub-core/lib/posix_wrap/localcharset.h (locale_charset): Update
header.
* grub-core/lib/posix_wrap/langinfo.h (nl_langinfo): Return static
string.
47 lines
1.7 KiB
C
47 lines
1.7 KiB
C
/* Test for initial conversion state.
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Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
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Written by Bruno Haible <bruno@clisp.org>, 2008.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <config.h>
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/* Specification. */
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#include <wchar.h>
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#include "verify.h"
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/* Platforms that lack mbsinit() also lack mbrlen(), mbrtowc(), mbsrtowcs()
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and wcrtomb(), wcsrtombs().
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We assume that
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- sizeof (mbstate_t) >= 4,
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- only stateless encodings are supported (such as UTF-8 and EUC-JP, but
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not ISO-2022 variants),
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- for each encoding, the number of bytes for a wide character is <= 4.
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(This maximum is attained for UTF-8, GB18030, EUC-TW.)
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We define the meaning of mbstate_t as follows:
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- In mb -> wc direction, mbstate_t's first byte contains the number of
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buffered bytes (in the range 0..3), followed by up to 3 buffered bytes.
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- In wc -> mb direction, mbstate_t contains no information. In other
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words, it is always in the initial state. */
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verify (sizeof (mbstate_t) >= 4);
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int
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mbsinit (const mbstate_t *ps)
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{
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const char *pstate = (const char *)ps;
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return pstate[0] == 0;
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}
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