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
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
/* Test whether case matters for a Unicode string.
Copyright (C) 2009-2022 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2009.
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/>. */
int
FUNC (const UNIT *s, size_t n, const char *iso639_language,
bool *resultp)
{
UNIT normsbuf[2048 / sizeof (UNIT)];
UNIT *norms;
size_t norms_length;
UNIT mappedbuf[2048 / sizeof (UNIT)];
UNIT *mapped_toupper;
UNIT *mapped_tolower;
UNIT *mapped_totitle;
size_t mapped_length;
/* Apply canonical decomposition to S. */
norms_length = sizeof (normsbuf) / sizeof (UNIT);
norms = U_NORMALIZE (UNINORM_NFD, s, n, normsbuf, &norms_length);
if (norms == NULL)
/* errno is set here. */
return -1;
mapped_length = sizeof (mappedbuf) / sizeof (UNIT);
/* Apply toupper mapping. */
mapped_toupper = U_TOUPPER (norms, norms_length, iso639_language, NULL,
mappedbuf, &mapped_length);
if (mapped_toupper == NULL)
goto fail;
/* Compare. */
if (!(mapped_length == norms_length
&& U_CMP (mapped_toupper, norms, norms_length) == 0))
{
if (mapped_toupper != mappedbuf)
free (mapped_toupper);
goto yes;
}
/* Apply tolower mapping. */
mapped_tolower = U_TOLOWER (norms, norms_length, iso639_language, NULL,
mapped_toupper, &mapped_length);
if (mapped_tolower == NULL)
{
if (mapped_toupper != mappedbuf)
{
int saved_errno = errno;
free (mapped_toupper);
errno = saved_errno;
}
goto fail;
}
if (mapped_toupper != mapped_tolower && mapped_toupper != mappedbuf)
free (mapped_toupper);
/* Compare. */
if (!(mapped_length == norms_length
&& U_CMP (mapped_tolower, norms, norms_length) == 0))
{
if (mapped_tolower != mappedbuf)
free (mapped_tolower);
goto yes;
}
/* Apply totitle mapping. */
mapped_totitle = U_TOTITLE (norms, norms_length, iso639_language, NULL,
mapped_tolower, &mapped_length);
if (mapped_totitle == NULL)
{
if (mapped_tolower != mappedbuf)
{
int saved_errno = errno;
free (mapped_tolower);
errno = saved_errno;
}
goto fail;
}
if (mapped_tolower != mapped_totitle && mapped_tolower != mappedbuf)
free (mapped_tolower);
/* Compare. */
if (!(mapped_length == norms_length
&& U_CMP (mapped_totitle, norms, norms_length) == 0))
{
if (mapped_totitle != mappedbuf)
free (mapped_totitle);
goto yes;
}
if (mapped_totitle != mappedbuf)
free (mapped_totitle);
if (norms != normsbuf)
free (norms);
*resultp = false;
return 0;
yes:
if (norms != normsbuf)
free (norms);
*resultp = true;
return 0;
fail:
if (norms != normsbuf)
{
int saved_errno = errno;
free (norms);
errno = saved_errno;
}
return -1;
}
|
