blob: 85b694f48bd5afd974fbd6a67a2d9d1a35e07687 (
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
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
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
/* Categories of Unicode characters.
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 "unictype.h"
/* Define u_category table. */
#include "categ_of.h"
static inline int
lookup_withtable (ucs4_t uc)
{
unsigned int index1 = uc >> category_header_0;
if (index1 < category_header_1)
{
int lookup1 = u_category.level1[index1];
if (lookup1 >= 0)
{
unsigned int index2 = (uc >> category_header_2) & category_header_3;
int lookup2 = u_category.level2[lookup1 + index2];
if (lookup2 >= 0)
{
unsigned int index3 = ((uc & category_header_4) + lookup2) * 5;
/* level3 contains 5-bit values, packed into 16-bit words. */
unsigned int lookup3 =
((u_category.level3[index3>>4]
| (u_category.level3[(index3>>4)+1] << 16))
>> (index3 % 16))
& 0x1f;
return lookup3;
}
}
return 29; /* = log2(UC_CATEGORY_MASK_Cn) */
}
return -1;
}
bool
uc_is_general_category_withtable (ucs4_t uc, uint32_t bitmask)
{
int bit = lookup_withtable (uc);
if (bit >= 0)
return ((bitmask >> bit) & 1);
else
return false;
}
uc_general_category_t
uc_general_category (ucs4_t uc)
{
int bit = lookup_withtable (uc);
uc_general_category_t result;
if (bit >= 0)
{
result.bitmask = 1 << bit;
result.generic = 1;
result.lookup.lookup_fn = &uc_is_general_category_withtable;
return result;
}
else
return _UC_CATEGORY_NONE;
}
|
