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//
// VMime library (http://www.vmime.org)
// Copyright (C) 2002 Vincent Richard <vincent@vmime.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 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
// 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.
//
// Linking this library statically or dynamically with other modules is making
// a combined work based on this library. Thus, the terms and conditions of
// the GNU General Public License cover the whole combination.
//
#include "vmime/config.hpp"
#if VMIME_CHARSETCONV_LIB_IS_WIN
#include "vmime/charsetConverter_win.hpp"
#include "vmime/exception.hpp"
#include "vmime/utility/stringUtils.hpp"
#include "vmime/utility/inputStreamStringAdapter.hpp"
#include "vmime/utility/outputStreamStringAdapter.hpp"
#include <string.h>
#include <stdlib.h>
#if (_WIN32 || _WIN64 || WIN32 || WIN64)
#include <windows.h>
#include "vmime/platforms/windows/windowsCodepages.hpp"
#else
#error Please use VMIME_CHARSETCONV_LIB_IS_WIN only on Windows!
#endif
#define CP_UNICODE 1200
namespace vmime {
// static
shared_ptr <charsetConverter> charsetConverter::createGenericConverter(
const charset& source,
const charset& dest,
const charsetConverterOptions& opts
) {
return make_shared <charsetConverter_win>(source, dest, opts);
}
charsetConverter_win::charsetConverter_win(
const charset& source,
const charset& dest,
const charsetConverterOptions& opts
)
: m_source(source),
m_dest(dest),
m_options(opts) {
}
void charsetConverter_win::convert(
utility::inputStream& in,
utility::outputStream& out,
status* st
) {
if (st) {
new (st) status();
}
byte_t buffer[32768];
string inStr, outStr;
while (!in.eof()) {
const size_t len = in.read(buffer, sizeof(buffer));
utility::stringUtils::appendBytesToString(inStr, buffer, len);
}
convert(inStr, outStr, st);
out.write(outStr.data(), outStr.length());
}
void charsetConverter_win::convert(const string& in, string& out, status* st) {
if (st) {
new (st) status();
}
const int sourceCodePage = getCodePage(m_source.getName().c_str());
const int destCodePage = getCodePage(m_dest.getName().c_str());
// Convert from source charset to Unicode
std::vector <char> unicodeBuffer;
const WCHAR* unicodePtr = NULL;
size_t unicodeLen = 0;
if (sourceCodePage == CP_UNICODE) {
unicodePtr = reinterpret_cast <const WCHAR*>(in.c_str());
unicodeLen = in.length() / 2;
} else {
const size_t bufferSize = MultiByteToWideChar(
sourceCodePage, 0, in.c_str(), static_cast <int>(in.length()), NULL, 0
) * sizeof(WCHAR); // in wide characters
unicodeBuffer.resize(bufferSize);
DWORD flags = 0;
if (!m_options.silentlyReplaceInvalidSequences) {
flags |= MB_ERR_INVALID_CHARS;
}
unicodePtr = reinterpret_cast <const WCHAR*>(&unicodeBuffer[0]);
unicodeLen = MultiByteToWideChar(
sourceCodePage, 0, in.c_str(), static_cast <int>(in.length()),
reinterpret_cast <WCHAR*>(&unicodeBuffer[0]), static_cast <int>(bufferSize)
);
if (unicodeLen == 0) {
if (GetLastError() == ERROR_NO_UNICODE_TRANSLATION) {
throw exceptions::illegal_byte_sequence_for_charset();
} else {
throw exceptions::charset_conv_error(
"MultiByteToWideChar() failed when converting to Unicode from " + m_source.getName()
);
}
}
}
// Convert from Unicode to destination charset
if (destCodePage == CP_UNICODE) {
out.assign(reinterpret_cast <const char*>(unicodePtr), unicodeLen * 2);
} else {
const size_t bufferSize = WideCharToMultiByte(
destCodePage, 0, unicodePtr, static_cast <int>(unicodeLen),
NULL, 0, 0, NULL
); // in multibyte characters
std::vector <char> buffer;
buffer.resize(bufferSize);
const size_t len = WideCharToMultiByte(
destCodePage, 0, unicodePtr, static_cast <int>(unicodeLen),
&buffer[0], static_cast <int>(bufferSize), 0, NULL
);
if (len == 0) {
if (GetLastError() == ERROR_NO_UNICODE_TRANSLATION) {
throw exceptions::illegal_byte_sequence_for_charset();
} else {
throw exceptions::charset_conv_error(
"WideCharToMultiByte() failed when converting from Unicode to " + m_source.getName()
);
}
}
out.assign(&buffer[0], len);
}
}
// static
int charsetConverter_win::getCodePage(const char* name) {
if (_stricmp(name, charsets::UTF_16) == 0) { // wchar_t is UTF-16 on Windows
return CP_UNICODE;
}
// "cp1252" --> return 1252
if ((name[0] == 'c' || name[0] == 'C') &&
(name[1] == 'p' || name[1] == 'P')) {
return atoi(name + 2);
}
return vmime::platforms::windows::windowsCodepages::getByName(name); // throws
}
shared_ptr <utility::charsetFilteredOutputStream>
charsetConverter_win::getFilteredOutputStream(
utility::outputStream& /* os */,
const charsetConverterOptions& /* opts */
) {
// TODO: implement me!
return null;
}
} // vmime
#endif // VMIME_CHARSETCONV_LIB_IS_WIN
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