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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.
//
#ifndef VMIME_CHARSETCONVERTER_ICONV_HPP_INCLUDED
#define VMIME_CHARSETCONVERTER_ICONV_HPP_INCLUDED
#include "vmime/config.hpp"
#if VMIME_CHARSETCONV_LIB_IS_ICONV
#include "vmime/charsetConverter.hpp"
namespace vmime {
/** A generic charset converter which uses iconv library.
*/
class charsetConverter_iconv : public charsetConverter {
public:
/** Construct and initialize an iconv charset converter.
*
* @param source input charset
* @param dest output charset
* @param opts conversion options
*/
charsetConverter_iconv(
const charset& source,
const charset& dest,
const charsetConverterOptions& opts = charsetConverterOptions()
);
~charsetConverter_iconv();
void convert(const string& in, string& out, status* st = NULL);
void convert(utility::inputStream& in, utility::outputStream& out, status* st = NULL);
shared_ptr <utility::charsetFilteredOutputStream> getFilteredOutputStream(
utility::outputStream& os,
const charsetConverterOptions& opts = charsetConverterOptions()
);
private:
void* m_desc;
charset m_source;
charset m_dest;
charsetConverterOptions m_options;
};
namespace utility {
class charsetFilteredOutputStream_iconv : public charsetFilteredOutputStream {
public:
/** Construct a new filter for the specified output stream.
*
* @param source input charset
* @param dest output charset
* @param os stream into which write filtered data
* @param opts conversion options
*/
charsetFilteredOutputStream_iconv(
const charset& source,
const charset& dest, outputStream* os,
const charsetConverterOptions& opts = charsetConverterOptions()
);
~charsetFilteredOutputStream_iconv();
outputStream& getNextOutputStream();
void flush();
protected:
void writeImpl(const byte_t* const data, const size_t count);
private:
// Maximum character width in any charset
enum { MAX_CHARACTER_WIDTH = 128 };
void* m_desc;
const charset m_sourceCharset;
const charset m_destCharset;
outputStream& m_stream;
// Buffer in which unconverted bytes are left until they can
// be converted (when more data arrives). The length should be
// large enough to contain any character in any charset.
byte_t m_unconvBuffer[MAX_CHARACTER_WIDTH];
size_t m_unconvCount;
// Buffer used for conversion. Avoids declaring it in write().
// Should be at least MAX_CHARACTER_WIDTH * MAX_CHARACTER_WIDTH.
byte_t m_outputBuffer[32768];
charsetConverterOptions m_options;
};
} // utility
} // vmime
#endif // VMIME_CHARSETCONV_LIB_IS_ICONV
#endif // VMIME_CHARSETCONVERTER_ICONV_HPP_INCLUDED
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