154 lines
4.3 KiB
C++
154 lines
4.3 KiB
C++
/***************************************************************************
|
|
* Copyright (C) 2008-2012 by Andrzej Rybczak *
|
|
* electricityispower@gmail.com *
|
|
* *
|
|
* 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 St, Fifth Floor, Boston, MA 02110-1301, USA. *
|
|
***************************************************************************/
|
|
|
|
#include "charset.h"
|
|
|
|
#ifdef HAVE_ICONV_H
|
|
|
|
#include <iconv.h>
|
|
#include <cstdlib>
|
|
#include <cstring>
|
|
#include <fstream>
|
|
#include <iostream>
|
|
#include <stdexcept>
|
|
|
|
#include "settings.h"
|
|
|
|
namespace
|
|
{
|
|
bool is_utf8(const char *s)
|
|
{
|
|
for (; *s; ++s)
|
|
{
|
|
if (*s & 0x80) // 1xxxxxxx
|
|
{
|
|
char c = 0x40;
|
|
unsigned i = 0;
|
|
while (c & *s)
|
|
++i, c >>= 1;
|
|
if (i < 1 || i > 3) // not 110xxxxx, 1110xxxx, 11110xxx
|
|
return false;
|
|
for (unsigned j = 0; j < i; ++j)
|
|
if (!*++s || !(*s & 0x80) || *s & 0x40) // 10xxxxxx
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool has_non_ascii_chars(const char *s)
|
|
{
|
|
for (; *s; ++s)
|
|
if (*s & 0x80)
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
void charset_convert(const char *from, const char *to, const char *&inbuf, bool delete_old, size_t len = 0)
|
|
{
|
|
if (!inbuf || !from || !to)
|
|
return;
|
|
|
|
iconv_t cd = iconv_open(to, from);
|
|
|
|
if (cd == iconv_t(-1))
|
|
return;
|
|
|
|
if (!len)
|
|
len = strlen(inbuf);
|
|
size_t buflen = len*6+1;
|
|
char *outbuf = new char[buflen];
|
|
char *outstart = outbuf;
|
|
const char *instart = inbuf;
|
|
|
|
if (iconv(cd, const_cast<ICONV_CONST char **>(&inbuf), &len, &outbuf, &buflen) == size_t(-1))
|
|
{
|
|
inbuf = instart;
|
|
delete [] outstart;
|
|
iconv_close(cd);
|
|
return;
|
|
}
|
|
iconv_close(cd);
|
|
*outbuf = 0;
|
|
if (delete_old)
|
|
free(const_cast<char *>(instart));
|
|
inbuf = outstart;
|
|
}
|
|
}
|
|
|
|
void iconv_convert_from_to(const char *from, const char *to, std::string &s)
|
|
{
|
|
const char *tmp = strdup(s.c_str());
|
|
charset_convert(from, to, tmp, true, s.length());
|
|
s = tmp;
|
|
free(const_cast<char *>(tmp));
|
|
}
|
|
|
|
void utf_to_locale(std::string &s)
|
|
{
|
|
if (s.empty() || Config.system_encoding.empty() || !has_non_ascii_chars(s.c_str()))
|
|
return;
|
|
const char *tmp = strdup(s.c_str());
|
|
charset_convert("utf-8", Config.system_encoding.c_str(), tmp, 1, s.length());
|
|
s = tmp;
|
|
free(const_cast<char *>(tmp));
|
|
}
|
|
|
|
std::string utf_to_locale_cpy(const std::string &s)
|
|
{
|
|
std::string result = s;
|
|
utf_to_locale(result);
|
|
return result;
|
|
}
|
|
|
|
void locale_to_utf(std::string &s)
|
|
{
|
|
if (s.empty() || Config.system_encoding.empty() || !has_non_ascii_chars(s.c_str()) || is_utf8(s.c_str()))
|
|
return;
|
|
const char *tmp = strdup(s.c_str());
|
|
charset_convert(Config.system_encoding.c_str(), "utf-8", tmp, 1, s.length());
|
|
s = tmp;
|
|
free(const_cast<char *>(tmp));
|
|
}
|
|
|
|
std::string locale_to_utf_cpy(const std::string &s)
|
|
{
|
|
std::string result = s;
|
|
locale_to_utf(result);
|
|
return result;
|
|
}
|
|
|
|
void utf_to_locale(const char *&s, bool delete_old)
|
|
{
|
|
if (!s || Config.system_encoding.empty() || !has_non_ascii_chars(s))
|
|
return;
|
|
charset_convert("utf-8", Config.system_encoding.c_str(), s, delete_old);
|
|
}
|
|
|
|
void locale_to_utf(const char *&s, bool delete_old)
|
|
{
|
|
if (!s || Config.system_encoding.empty() || !has_non_ascii_chars(s) || is_utf8(s))
|
|
return;
|
|
charset_convert(Config.system_encoding.c_str(), "utf-8", s, delete_old);
|
|
}
|
|
|
|
#endif // HAVE_ICONV_H
|
|
|