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-rw-r--r--lib/mbsinit.c61
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diff --git a/lib/mbsinit.c b/lib/mbsinit.c
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--- a/lib/mbsinit.c
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-/* 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