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Diffstat (limited to 'lib/unistr/u32-mbtoucr.c')
-rw-r--r-- | lib/unistr/u32-mbtoucr.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/lib/unistr/u32-mbtoucr.c b/lib/unistr/u32-mbtoucr.c new file mode 100644 index 0000000..7d7993c --- /dev/null +++ b/lib/unistr/u32-mbtoucr.c @@ -0,0 +1,39 @@ +/* Look at first character in UTF-32 string, returning an error code. + Copyright (C) 2002, 2006-2007 Free Software Foundation, Inc. + Written by Bruno Haible <bruno@clisp.org>, 2002. + + This program 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 3 of the License, 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +#include <config.h> + +/* Specification. */ +#include "unistr.h" + +int +u32_mbtoucr (ucs4_t *puc, const uint32_t *s, size_t n) +{ + uint32_t c = *s; + + if (c < 0xd800 || (c >= 0xe000 && c < 0x110000)) + { + *puc = c; + return 1; + } + else + { + /* invalid multibyte character */ + *puc = 0xfffd; + return -1; + } +} |