Commit | Line | Data |
---|---|---|
eb4a14ed | 1 | /* Convert wide character to multibyte character. |
5e69ceb7 | 2 | Copyright (C) 2008-2014 Free Software Foundation, Inc. |
eb4a14ed LC |
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 Lesser 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 Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser 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 <errno.h> | |
24 | #include <stdlib.h> | |
25 | ||
26 | ||
27 | size_t | |
28 | wcrtomb (char *s, wchar_t wc, mbstate_t *ps) | |
29 | { | |
30 | /* This implementation of wcrtomb on top of wctomb() supports only | |
31 | stateless encodings. ps must be in the initial state. */ | |
32 | if (ps != NULL && !mbsinit (ps)) | |
33 | { | |
34 | errno = EINVAL; | |
35 | return (size_t)(-1); | |
36 | } | |
37 | ||
38 | if (s == NULL) | |
39 | /* We know the NUL wide character corresponds to the NUL character. */ | |
40 | return 1; | |
41 | else | |
42 | { | |
43 | int ret = wctomb (s, wc); | |
44 | ||
45 | if (ret >= 0) | |
46 | return ret; | |
47 | else | |
48 | { | |
49 | errno = EILSEQ; | |
50 | return (size_t)(-1); | |
51 | } | |
52 | } | |
53 | } |