/usr/include/vmime/charsetConverter.hpp is in libvmime-dev 0.9.1-5build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// VMime library (http://www.vmime.org)
// Copyright (C) 2002-2009 Vincent Richard <vincent@vincent-richard.net>
//
// 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_HPP_INCLUDED
#define VMIME_CHARSETCONVERTER_HPP_INCLUDED
#include "vmime/base.hpp"
#include "vmime/component.hpp"
#include "vmime/charset.hpp"
#include "vmime/utility/filteredStream.hpp"
namespace vmime
{
/** Convert between charsets.
*/
class charsetConverter : public object
{
public:
/** Construct and initialize a charset converter.
*
* @param source input charset
* @param dest output charset
*/
charsetConverter(const charset& source, const charset& dest);
~charsetConverter();
/** Convert a string buffer from one charset to another
* charset (in-memory conversion)
*
* \deprecated Use the new convert() method, which takes
* an outputStream parameter.
*
* @param in input buffer
* @param out output buffer
* @throws exceptions::charset_conv_error if an error occured during
* the conversion
*/
void convert(const string& in, string& out);
/** Convert the contents of an input stream in a specified charset
* to another charset and write the result to an output stream.
*
* @param in input stream to read data from
* @param out output stream to write the converted data
* @throws exceptions::charset_conv_error if an error occured during
* the conversion
*/
void convert(utility::inputStream& in, utility::outputStream& out);
private:
void* m_desc;
charset m_source;
charset m_dest;
};
namespace utility {
/** A filtered output stream which applies a charset conversion
* to input bytes.
*
* May throw a exceptions::charset_conv_error if an error
* occured when initializing convert, or during charset conversion.
*/
class charsetFilteredOutputStream : public filteredOutputStream
{
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
*/
charsetFilteredOutputStream
(const charset& source, const charset& dest, outputStream& os);
~charsetFilteredOutputStream();
outputStream& getNextOutputStream();
void write(const value_type* const data, const size_type count);
void flush();
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.
value_type m_unconvBuffer[MAX_CHARACTER_WIDTH];
size_type m_unconvCount;
// Buffer used for conversion. Avoids declaring it in write().
// Should be at least MAX_CHARACTER_WIDTH * MAX_CHARACTER_WIDTH.
value_type m_outputBuffer[32768];
};
} // utility
} // vmime
#endif // VMIME_CHARSETCONVERTER_HPP_INCLUDED
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