Mercurial > hg > octave-lyh > gnulib-hg
changeset 7794:3b5072f63d1b
New module 'utf16-ucs4-safe'.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Mon, 08 Jan 2007 20:38:06 +0000 |
parents | f5b4e66aa08b |
children | ba03072b3113 |
files | ChangeLog lib/unistr/utf16-ucs4-safe.c lib/utf16-ucs4-safe.h modules/utf16-ucs4-safe |
diffstat | 4 files changed, 123 insertions(+), 0 deletions(-) [+] |
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--- a/ChangeLog +++ b/ChangeLog @@ -4,6 +4,10 @@ * lib/utf8-ucs4-safe.h: New file. * lib/unistr/utf8-ucs4-safe.c: New file. + * modules/utf16-ucs4-safe: New file. + * lib/utf16-ucs4-safe.h: New file. + * lib/unistr/utf16-ucs4-safe.c: New file. + 2007-01-08 Bruno Haible <bruno@clisp.org> * modules/utf8-ucs4 (Files, lib_SOURCES): Add unistr/utf8-ucs4.c.
new file mode 100644 --- /dev/null +++ b/lib/unistr/utf16-ucs4-safe.c @@ -0,0 +1,49 @@ +/* Conversion UTF-16 to UCS-4. + Copyright (C) 2001-2002, 2006 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-safe.h" + +int +u16_mbtouc_safe_aux (ucs4_t *puc, const uint16_t *s, size_t n) +{ + uint16_t c = *s; + + if (c < 0xdc00) + { + if (n >= 2) + { + if (s[1] >= 0xdc00 && s[1] < 0xe000) + { + *puc = 0x10000 + ((c - 0xd800) << 10) + (s[1] - 0xdc00); + return 2; + } + /* invalid multibyte character */ + } + else + { + /* incomplete multibyte character */ + } + } + /* invalid multibyte character */ + *puc = 0xfffd; + return 1; +}
new file mode 100644 --- /dev/null +++ b/lib/utf16-ucs4-safe.h @@ -0,0 +1,45 @@ +/* Conversion UTF-16 to UCS-4. + Copyright (C) 2001-2002, 2005-2007 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. */ + +#ifndef _UTF16_UCS4_SAFE_H +#define _UTF16_UCS4_SAFE_H + +#include <stddef.h> +#include "unitypes.h" + +extern int u16_mbtouc_safe_aux (ucs4_t *puc, const uint16_t *s, size_t n); + +/* Return the length (number of units) of the first character in S, putting + its 'ucs4_t' representation in *PUC. + The number of available units, N, must be > 0. */ +static inline int +u16_mbtouc_safe (ucs4_t *puc, const uint16_t *s, size_t n) +{ + uint16_t c = *s; + + if (c < 0xd800 || c >= 0xe000) + { + *puc = c; + return 1; + } + else + return u16_mbtouc_safe_aux (puc, s, n); +} + +#endif /* _UTF16_UCS4_SAFE_H */
new file mode 100644 --- /dev/null +++ b/modules/utf16-ucs4-safe @@ -0,0 +1,25 @@ +Description: +Conversion UTF-16 to UCS-4. + +Files: +lib/utf16-ucs4-safe.h +lib/unistr/utf16-ucs4-safe.c +m4/utf-ucs4.m4 + +Depends-on: + +configure.ac: +gl_UTF_UCS4 + +Makefile.am: +lib_SOURCES += utf16-ucs4-safe.h unistr/utf16-ucs4-safe.c + +Include: +"utf16-ucs4-safe.h" + +License: +LGPL + +Maintainer: +Bruno Haible +