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
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
/*
* Copyright (C) 2003-2015 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU 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.
*/
#include "config.h"
#include "Converter.hxx"
#include "Error.hxx"
#include "util/Error.hxx"
#include "util/Macros.hxx"
#include "util/AllocatedString.hxx"
#include "util/WritableBuffer.hxx"
#include "util/ConstBuffer.hxx"
#include <string.h>
#ifdef HAVE_ICU
#include "Util.hxx"
#include <unicode/ucnv.h>
#elif defined(HAVE_GLIB)
#include "util/Domain.hxx"
static constexpr Domain g_iconv_domain("g_iconv");
#endif
#ifdef HAVE_ICU
IcuConverter::~IcuConverter()
{
ucnv_close(converter);
}
#endif
#ifdef HAVE_ICU_CONVERTER
IcuConverter *
IcuConverter::Create(const char *charset, Error &error)
{
#ifdef HAVE_ICU
UErrorCode code = U_ZERO_ERROR;
UConverter *converter = ucnv_open(charset, &code);
if (converter == nullptr) {
error.Format(icu_domain, int(code),
"Failed to initialize charset '%s': %s",
charset, u_errorName(code));
return nullptr;
}
return new IcuConverter(converter);
#elif defined(HAVE_GLIB)
GIConv to = g_iconv_open("utf-8", charset);
GIConv from = g_iconv_open(charset, "utf-8");
if (to == (GIConv)-1 || from == (GIConv)-1) {
if (to != (GIConv)-1)
g_iconv_close(to);
if (from != (GIConv)-1)
g_iconv_close(from);
error.Format(g_iconv_domain,
"Failed to initialize charset '%s'", charset);
return nullptr;
}
return new IcuConverter(to, from);
#endif
}
#ifdef HAVE_ICU
#elif defined(HAVE_GLIB)
static AllocatedString<char>
DoConvert(GIConv conv, const char *src)
{
// TODO: dynamic buffer?
char buffer[4096];
char *in = const_cast<char *>(src);
char *out = buffer;
size_t in_left = strlen(src);
size_t out_left = sizeof(buffer);
size_t n = g_iconv(conv, &in, &in_left, &out, &out_left);
if (n == static_cast<size_t>(-1) || in_left > 0)
return nullptr;
return AllocatedString::Duplicate(buffer, sizeof(buffer) - out_left);
}
#endif
AllocatedString<char>
IcuConverter::ToUTF8(const char *s) const
{
#ifdef HAVE_ICU
const ScopeLock protect(mutex);
ucnv_resetToUnicode(converter);
// TODO: dynamic buffer?
UChar buffer[4096], *target = buffer;
const char *source = s;
UErrorCode code = U_ZERO_ERROR;
ucnv_toUnicode(converter, &target, buffer + ARRAY_SIZE(buffer),
&source, source + strlen(source),
nullptr, true, &code);
if (code != U_ZERO_ERROR)
return nullptr;
const size_t target_length = target - buffer;
return UCharToUTF8({buffer, target_length});
#elif defined(HAVE_GLIB)
return DoConvert(to_utf8, s);
#endif
}
AllocatedString<char>
IcuConverter::FromUTF8(const char *s) const
{
#ifdef HAVE_ICU
const ScopeLock protect(mutex);
const auto u = UCharFromUTF8(s);
if (u.IsNull())
return nullptr;
ucnv_resetFromUnicode(converter);
// TODO: dynamic buffer?
char buffer[4096], *target = buffer;
const UChar *source = u.data;
UErrorCode code = U_ZERO_ERROR;
ucnv_fromUnicode(converter, &target, buffer + ARRAY_SIZE(buffer),
&source, u.end(),
nullptr, true, &code);
delete[] u.data;
if (code != U_ZERO_ERROR)
return nullptr;
return AllocatedString<>::Duplicate(buffer, target);
#elif defined(HAVE_GLIB)
return DoConvert(from_utf8, s);
#endif
}
#endif
|
