old-cross-binutils/gdb/gnulib/import/mbsinit.c
Jan Kratochvil 8690e6342c gdb/
Add fnmatch-gnu module.
	* gnulib/Makefile.in (aclocal_m4_deps): Add new files and remove one.
	* gnulib/configure.ac (AC_INIT): Use now import/memmem.c.
	* gnulib/aclocal.m4: Regenerate.
	* gnulib/config.in: Regenerate.
	* gnulib/configure: Regenerate.
	* gnulib/import/dummy.c: Remove.
	* gnulib/import/Makefile.am: Regenerate.
	* gnulib/import/Makefile.in: Likewise.
	* gnulib/import/m4/gnulib-cache.m4: Likewise.
	* gnulib/import/m4/gnulib-comp.m4: Likewise.
	* gnulib/import/alloca.c: New file.
	* gnulib/import/alloca.in.h: Likewise.
	* gnulib/import/config.charset: Likewise.
	* gnulib/import/fnmatch.c: Likewise.
	* gnulib/import/fnmatch.in.h: Likewise.
	* gnulib/import/fnmatch_loop.c: Likewise.
	* gnulib/import/localcharset.c: Likewise.
	* gnulib/import/localcharset.h: Likewise.
	* gnulib/import/m4/alloca.m4: Likewise.
	* gnulib/import/m4/codeset.m4: Likewise.
	* gnulib/import/m4/configmake.m4: Likewise.
	* gnulib/import/m4/fcntl-o.m4: Likewise.
	* gnulib/import/m4/fnmatch.m4: Likewise.
	* gnulib/import/m4/glibc21.m4: Likewise.
	* gnulib/import/m4/localcharset.m4: Likewise.
	* gnulib/import/m4/locale-fr.m4: Likewise.
	* gnulib/import/m4/locale-ja.m4: Likewise.
	* gnulib/import/m4/locale-zh.m4: Likewise.
	* gnulib/import/m4/mbrtowc.m4: Likewise.
	* gnulib/import/m4/mbsinit.m4: Likewise.
	* gnulib/import/m4/mbsrtowcs.m4: Likewise.
	* gnulib/import/m4/mbstate_t.m4: Likewise.
	* gnulib/import/m4/stdbool.m4: Likewise.
	* gnulib/import/m4/wchar_h.m4: Likewise.
	* gnulib/import/m4/wctype_h.m4: Likewise.
	* gnulib/import/m4/wint_t.m4: Likewise.
	* gnulib/import/mbrtowc.c: Likewise.
	* gnulib/import/mbsinit.c: Likewise.
	* gnulib/import/mbsrtowcs-impl.h: Likewise.
	* gnulib/import/mbsrtowcs-state.c: Likewise.
	* gnulib/import/mbsrtowcs.c: Likewise.
	* gnulib/import/ref-add.sin: Likewise.
	* gnulib/import/ref-del.sin: Likewise.
	* gnulib/import/stdbool.in.h: Likewise.
	* gnulib/import/streq.h: Likewise.
	* gnulib/import/strnlen1.c: Likewise.
	* gnulib/import/strnlen1.h: Likewise.
	* gnulib/import/verify.h: Likewise.
	* gnulib/import/wchar.in.h: Likewise.
	* gnulib/import/wctype.in.h: Likewise.
2012-07-02 11:52:39 +00:00

61 lines
1.9 KiB
C

/* Test for initial conversion state.
Copyright (C) 2008-2012 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2008.
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 <http://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include <wchar.h>
#include "verify.h"
#if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
/* On native Windows, 'mbstate_t' is defined as 'int'. */
int
mbsinit (const mbstate_t *ps)
{
return ps == NULL || *ps == 0;
}
#else
/* Platforms that lack mbsinit() also lack mbrlen(), mbrtowc(), mbsrtowcs()
and wcrtomb(), wcsrtombs().
We assume that
- sizeof (mbstate_t) >= 4,
- only stateless encodings are supported (such as UTF-8 and EUC-JP, but
not ISO-2022 variants),
- for each encoding, the number of bytes for a wide character is <= 4.
(This maximum is attained for UTF-8, GB18030, EUC-TW.)
We define the meaning of mbstate_t as follows:
- In mb -> wc direction, mbstate_t's first byte contains the number of
buffered bytes (in the range 0..3), followed by up to 3 buffered bytes.
- In wc -> mb direction, mbstate_t contains no information. In other
words, it is always in the initial state. */
verify (sizeof (mbstate_t) >= 4);
int
mbsinit (const mbstate_t *ps)
{
const char *pstate = (const char *)ps;
return pstate == NULL || pstate[0] == 0;
}
#endif