| /* Copyright (C) 1991-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <stdlib.h> |
| #include <string.h> |
| #include <wchar.h> |
| #include <gconv.h> |
| #include <wcsmbs/wcsmbsload.h> |
| |
| |
| /* Shared with __wctomb_chk. */ |
| mbstate_t __wctomb_state attribute_hidden; |
| |
| /* Convert WCHAR into its multibyte character representation, |
| putting this in S and returning its length. |
| |
| Attention: this function should NEVER be intentionally used. |
| The interface is completely stupid. The state is shared between |
| all conversion functions. You should use instead the restartable |
| version `wcrtomb'. */ |
| int |
| wctomb (char *s, wchar_t wchar) |
| { |
| /* If S is NULL the function has to return null or not null |
| depending on the encoding having a state depending encoding or |
| not. */ |
| if (s == NULL) |
| { |
| const struct gconv_fcts *fcts; |
| |
| /* Get the conversion functions. */ |
| fcts = get_gconv_fcts (_NL_CURRENT_DATA (LC_CTYPE)); |
| |
| /* This is an extension in the Unix standard which does not directly |
| violate ISO C. */ |
| memset (&__wctomb_state, '\0', sizeof __wctomb_state); |
| |
| return fcts->tomb->__stateful; |
| } |
| |
| return __wcrtomb (s, wchar, &__wctomb_state); |
| } |
| libc_hidden_def (wctomb) |