diff options
author | Thomas Guyot-Sionnest <dermoth@aei.ca> | 2009-01-15 04:22:57 -0500 |
---|---|---|
committer | Thomas Guyot-Sionnest <dermoth@aei.ca> | 2009-01-15 05:19:08 -0500 |
commit | 71cdb52799220f8d9052643baf1d3e9836a9c755 (patch) | |
tree | 27aee97a35d9ab51f0d8f64a46690bd41a5f8c1b /gl/mbsinit.c | |
parent | f7afa46586645e50498d8b2d0c67884f014dc3a4 (diff) | |
download | monitoring-plugins-71cdb52799220f8d9052643baf1d3e9836a9c755.tar.gz |
Sync with gnulib
Diffstat (limited to 'gl/mbsinit.c')
-rw-r--r-- | gl/mbsinit.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/gl/mbsinit.c b/gl/mbsinit.c new file mode 100644 index 00000000..81fed5a1 --- /dev/null +++ b/gl/mbsinit.c | |||
@@ -0,0 +1,47 @@ | |||
1 | /* Test for initial conversion state. | ||
2 | Copyright (C) 2008 Free Software Foundation, Inc. | ||
3 | Written by Bruno Haible <bruno@clisp.org>, 2008. | ||
4 | |||
5 | This program is free software: you can redistribute it and/or modify | ||
6 | it under the terms of the GNU General Public License as published by | ||
7 | the Free Software Foundation; either version 3 of the License, or | ||
8 | (at your option) any later version. | ||
9 | |||
10 | This program is distributed in the hope that it will be useful, | ||
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
13 | GNU General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU General Public License | ||
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | ||
17 | |||
18 | #include <config.h> | ||
19 | |||
20 | /* Specification. */ | ||
21 | #include <wchar.h> | ||
22 | |||
23 | #include "verify.h" | ||
24 | |||
25 | /* Platforms that lack mbsinit() also lack mbrlen(), mbrtowc(), mbsrtowcs() | ||
26 | and wcrtomb(), wcsrtombs(). | ||
27 | We assume that | ||
28 | - sizeof (mbstate_t) >= 4, | ||
29 | - only stateless encodings are supported (such as UTF-8 and EUC-JP, but | ||
30 | not ISO-2022 variants), | ||
31 | - for each encoding, the number of bytes for a wide character is <= 4. | ||
32 | (This maximum is attained for UTF-8, GB18030, EUC-TW.) | ||
33 | We define the meaning of mbstate_t as follows: | ||
34 | - In mb -> wc direction, mbstate_t's first byte contains the number of | ||
35 | buffered bytes (in the range 0..3), followed by up to 3 buffered bytes. | ||
36 | - In wc -> mb direction, mbstate_t contains no information. In other | ||
37 | words, it is always in the initial state. */ | ||
38 | |||
39 | verify (sizeof (mbstate_t) >= 4); | ||
40 | |||
41 | int | ||
42 | mbsinit (const mbstate_t *ps) | ||
43 | { | ||
44 | const char *pstate = (const char *)ps; | ||
45 | |||
46 | return pstate[0] == 0; | ||
47 | } | ||