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
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
// FbString.cc for fluxbox
// Copyright (c) 2006 Henrik Kinnunen (fluxgen at fluxbox dot org)
// Copyright (c) 2006 Simon Bowden (rathnor at fluxbox dot org)
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
// $Id$
#ifdef HAVE_CERRNO
#include <cerrno>
#else
#include <errno.h>
#endif
#include "FbString.hh"
#include "config.h"
#include <stdio.h>
#ifdef HAVE_ICONV
#include <iconv.h>
#endif // HAVE_ICONV
#include <langinfo.h>
#include <locale.h>
#include <iostream>
using namespace std;
namespace FbTk {
namespace FbStringUtil {
enum ConvType { FB2X = 0, X2FB, LOCALE2FB, FB2LOCALE, CONVSIZE };
#ifdef HAVE_ICONV
static iconv_t *iconv_convs = 0;
#else
static int iconv_convs[CONVSIZE];
#endif // HAVE_ICONV
/// Initialise all of the iconv conversion descriptors
void init() {
static bool s_init = false;
if (s_init)
return;
s_init = true;
iconv_convs = new iconv_t[CONVSIZE];
setlocale(LC_CTYPE, "");
#ifdef HAVE_ICONV
#ifdef CODESET
std::string locale_codeset = nl_langinfo(CODESET);
#else // openbsd doesnt have this (yet?)
std::string locale_codeset = "";
std::string locale = setlocale(LC_CTYPE, NULL);
size_t pos = locale.find('.');
if (pos != std::string::npos)
locale_codeset = locale.substr(pos);
#endif // CODESET
#ifdef DEBUG
cerr<<"FbTk::FbString: setup converts for local codeset = "<<locale_codeset<<endl;
#endif // DEBUG
iconv_convs[FB2X] = iconv_open("ISO8859-1", "UTF-8");
iconv_convs[X2FB] = iconv_open("UTF-8", "ISO8859-1");
iconv_convs[FB2LOCALE] = iconv_open(locale_codeset.c_str(), "UTF-8");
iconv_convs[LOCALE2FB] = iconv_open("UTF-8", locale_codeset.c_str());
#else
for (int i=0; i < CONVSIZE; ++i)
iconv_convs[i] = 0;
#endif // HAVE_ICONV
}
void shutdown() {
#ifdef HAVE_ICONV
for (int i=0; i < CONVSIZE; ++i)
if (iconv_convs[i] != (iconv_t)(-1))
iconv_close(iconv_convs[i]);
#endif // HAVE_ICONV
delete[] iconv_convs;
}
#ifdef HAVE_ICONV
/**
Recodes the text from one encoding to another
assuming cd is correct
@param cd the iconv type
@param msg text to be converted, **NOT** necessarily NULL terminated
@param size number of BYTES to convert
@return the recoded string, or 0 on failure
*/
/**
--NOTE--
In the "C" locale, this will strip any high-bit characters
because C means 7-bit ASCII charset. If you don't want this
then you need to set your locale to something UTF-8, OR something
ISO8859-1.
*/
std::string recode(iconv_t cd,
const std::string &in) {
// If empty message, yes this can happen, return
if (in.empty())
return "";
size_t insize = in.size();
size_t outsize = insize;
char * out = (char *) malloc(outsize * sizeof(char)); // need realloc
char * out_ptr = out;
size_t inbytesleft = insize;
size_t outbytesleft = outsize;
char * in_ptr = const_cast<char *>(in.data());
size_t result = (size_t)(-1);
bool again = true;
while (again) {
again = false;
#ifdef HAVE_CONST_ICONV
result = iconv(cd, (const char**)(&in_ptr), &inbytesleft, &out_ptr, &outbytesleft);
#else
result = iconv(cd, &in_ptr, &inbytesleft, &out_ptr, &outbytesleft);
#endif // HAVE_CONST_ICONV
if (result == (size_t)(-1)) {
switch(errno) {
case EILSEQ:
// Try skipping a byte
in_ptr++;
inbytesleft--;
again = true;
case EINVAL:
break;
case E2BIG:
// need more space!
outsize += insize;
out = (char *) realloc(out, outsize*sizeof(char));
if (out != NULL)
again = true;
outbytesleft += insize;
out_ptr = out + outsize - outbytesleft;
break;
default:
// something else broke
perror("iconv");
break;
}
}
}
// copy to our return string
std::string ret;
ret.append(out, outsize - outbytesleft);
// reset the conversion descriptor
iconv(cd, NULL, NULL, NULL, NULL);
if (out)
free(out);
return ret;
}
#else
std::string recode(int cd,
const std::string &str) {
return str;
}
#endif // HAVE_ICONV
FbString XStrToFb(const std::string &src) {
return recode(iconv_convs[X2FB], src);
}
std::string FbStrToX(const FbString &src) {
return recode(iconv_convs[FB2X], src);
}
/// Handle thislocale string encodings (strings coming from userspace)
FbString LocaleStrToFb(const std::string &src) {
return recode(iconv_convs[LOCALE2FB], src);
}
std::string FbStrToLocale(const FbString &src) {
return recode(iconv_convs[FB2LOCALE], src);
}
bool haveUTF8() {
#ifdef HAVE_ICONV
if (iconv_convs[LOCALE2FB] != ((iconv_t)(-1)))
return true;
#endif // HAVE_ICONV
return false;
}
}; // end namespace StringUtil
}; // end namespace FbTk
|
