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Last change
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gnu grep version 2.12 (grep-2.12.tar.xz, md5sum=8d2f0346d08b13c18afb81f0e8aa1e2f)
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| 1 | /* Convert wide character to multibyte character.
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| 2 | Copyright (C) 2008-2012 Free Software Foundation, Inc.
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| 3 | Written by Bruno Haible <bruno@clisp.org>, 2008.
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| 4 |
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| 5 | This program is free software: you can redistribute it and/or modify
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| 6 | it under the terms of the GNU General Public License as published by
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| 7 | the Free Software Foundation; either version 3 of the License, or
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| 8 | (at your option) any later version.
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| 9 |
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| 10 | This program is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU General Public License for more details.
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| 14 |
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| 15 | You should have received a copy of the GNU General Public License
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| 16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */
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| 17 |
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| 18 | #include <config.h>
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| 19 |
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| 20 | /* Specification. */
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| 21 | #include <wchar.h>
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| 22 |
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| 23 | #include <errno.h>
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| 24 | #include <stdlib.h>
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| 25 |
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| 26 |
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| 27 | size_t
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| 28 | wcrtomb (char *s, wchar_t wc, mbstate_t *ps)
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| 29 | {
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| 30 | /* This implementation of wcrtomb on top of wctomb() supports only
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| 31 | stateless encodings. ps must be in the initial state. */
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| 32 | if (ps != NULL && !mbsinit (ps))
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| 33 | {
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| 34 | errno = EINVAL;
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| 35 | return (size_t)(-1);
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| 36 | }
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| 37 |
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| 38 | if (s == NULL)
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| 39 | /* We know the NUL wide character corresponds to the NUL character. */
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| 40 | return 1;
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| 41 | else
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| 42 | {
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| 43 | int ret = wctomb (s, wc);
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| 44 |
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| 45 | if (ret >= 0)
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| 46 | return ret;
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| 47 | else
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| 48 | {
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| 49 | errno = EILSEQ;
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| 50 | return (size_t)(-1);
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| 51 | }
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| 52 | }
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| 53 | }
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