blob: 45a9f49fc06265b8222760cf3b83898566cd6d32 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
/* Look at first character in UTF-32 string.
Copyright (C) 2002, 2006-2007, 2009-2015 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_mblen (const uint32_t *s, size_t n)
{
if (n > 0)
{
uint32_t c = *s;
#if CONFIG_UNICODE_SAFETY
if (c < 0xd800 || (c >= 0xe000 && c < 0x110000))
#endif
return (c != 0 ? 1 : 0);
}
/* invalid or incomplete multibyte character */
return -1;
}
|
