/* Iterate over previous character in UTF-16 string.
- Copyright (C) 2002, 2006-2007 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2006-2007, 2009-2014 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 Library General Public License as published
- by the Free Software Foundation; either version 2, or (at your option)
- any later version.
+ 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
- Library General Public License for more details.
+ Lesser 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. */
+ 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>
const uint16_t *
u16_prev (ucs4_t *puc, const uint16_t *s, const uint16_t *start)
{
- /* Keep in sync with utf16-ucs4.h and utf16-ucs4.c. */
+ /* Keep in sync with unistr.h and utf16-ucs4.c. */
if (s != start)
{
uint16_t c_1 = s[-1];
if (c_1 < 0xd800 || c_1 >= 0xe000)
- {
- *puc = c_1;
- return s - 1;
- }
+ {
+ *puc = c_1;
+ return s - 1;
+ }
#if CONFIG_UNICODE_SAFETY
if (c_1 >= 0xdc00)
#endif
- if (s - 1 != start)
- {
- uint16_t c_2 = s[-2];
+ if (s - 1 != start)
+ {
+ uint16_t c_2 = s[-2];
#if CONFIG_UNICODE_SAFETY
- if (c_2 >= 0xd800 && c_2 < 0xdc00)
+ if (c_2 >= 0xd800 && c_2 < 0xdc00)
#endif
- {
- *puc = 0x10000 + ((c_2 - 0xd800) << 10) + (c_1 - 0xdc00);
- return s - 2;
- }
- }
+ {
+ *puc = 0x10000 + ((c_2 - 0xd800) << 10) + (c_1 - 0xdc00);
+ return s - 2;
+ }
+ }
}
return NULL;
}