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
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
/* Search for some characters in UTF-8/UTF-16/UTF-32 string.
Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2002.
This file is free software.
It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
You can redistribute it and/or modify it under either
- the terms of the GNU Lesser General Public License as published
by the Free Software Foundation, either version 3, or (at your
option) any later version, or
- the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option)
any later version, or
- the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
This file 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 and the GNU General Public License
for more details.
You should have received a copy of the GNU Lesser General Public
License and of the GNU General Public License along with this
program. If not, see <https://www.gnu.org/licenses/>. */
size_t
FUNC (const UNIT *str, const UNIT *accept)
{
/* Optimize two cases. */
if (accept[0] == 0)
return 0;
{
ucs4_t uc;
int count = U_STRMBTOUC (&uc, accept);
if (count >= 0 && accept[count] == 0)
{
const UNIT *ptr = str;
for (; *ptr != 0; ptr += count)
if (U_CMP (ptr, accept, count) != 0)
break;
return ptr - str;
}
}
/* General case. */
{
const UNIT *ptr = str;
for (;;)
{
ucs4_t uc;
int count = U_STRMBTOUC (&uc, ptr);
if (count == 0)
return ptr - str;
if (count < 0)
break;
if (!U_STRCHR (accept, uc))
return ptr - str;
ptr += count;
}
return U_STRLEN (str);
}
}
|
