Mercurial > hg > octave-lyh > gnulib-hg
changeset 8011:7b6c5d4d77b6
Move to here from utf16-ucs4.c.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sun, 28 Jan 2007 01:59:46 +0000 |
parents | a8e6646d456e |
children | 338576348208 |
files | lib/unistr/utf16-ucs4-unsafe.c |
diffstat | 1 files changed, 53 insertions(+), 0 deletions(-) [+] |
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new file mode 100644 --- /dev/null +++ b/lib/unistr/utf16-ucs4-unsafe.c @@ -0,0 +1,53 @@ +/* Conversion UTF-16 to UCS-4. + Copyright (C) 2001-2002, 2006-2007 Free Software Foundation, Inc. + Written by Bruno Haible <bruno@clisp.org>, 2001. + + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU Library General Public License as published + by the Free Software Foundation; either version 2, 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + USA. */ + +#include <config.h> + +/* Specification. */ +#include "utf16-ucs4-unsafe.h" + +int +u16_mbtouc_unsafe_aux (ucs4_t *puc, const uint16_t *s, size_t n) +{ + uint16_t c = *s; + +#if CONFIG_UNICODE_SAFETY + if (c < 0xdc00) +#endif + { + if (n >= 2) + { +#if CONFIG_UNICODE_SAFETY + if (s[1] >= 0xdc00 && s[1] < 0xe000) +#endif + { + *puc = 0x10000 + ((c - 0xd800) << 10) + (s[1] - 0xdc00); + return 2; + } + /* invalid multibyte character */ + } + else + { + /* incomplete multibyte character */ + } + } + /* invalid multibyte character */ + *puc = 0xfffd; + return 1; +}