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/***************************************************************************
* Copyright (C) 2005 by Joris Guisson *
* joris.guisson@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 Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#ifndef BTBENCODER_H
#define BTBENCODER_H
#include <util/file.h>
namespace bt
{
class File;
/**
* @author Joris Guisson
*
* Interface for classes which wish to receive the output from a BEncoder.
*/
class BEncoderOutput
{
public:
virtual ~BEncoderOutput() {}
/**
* Write a string of characters.
* @param str The string
* @param len The length of the string
*/
virtual void write(const char* str,Uint32 len) = 0;
};
/**
* Writes the output of a bencoder to a file
*/
class BEncoderFileOutput : public BEncoderOutput
{
File* fptr;
public:
BEncoderFileOutput(File* fptr);
void write(const char* str,Uint32 len);
};
/**
* Write the output of a BEncoder to a TQByteArray
*/
class BEncoderBufferOutput : public BEncoderOutput
{
TQByteArray & data;
Uint32 ptr;
public:
BEncoderBufferOutput(TQByteArray & data);
void write(const char* str,Uint32 len);
};
/**
* @author Joris Guisson
* @brief Helper class to b-encode stuff.
*
* This class b-encodes data. For more details about b-encoding, see
* the BitTorrent protocol docs. The data gets written to a BEncoderOutput
* thing.
*/
class BEncoder
{
BEncoderOutput* out;
bool del;
public:
/**
* Constructor, output gets written to a file.
* @param fptr The File to write to
*/
BEncoder(File* fptr);
/**
* Constructor, output gets written to a BEncoderOutput object.
* @param out The BEncoderOutput
*/
BEncoder(BEncoderOutput* out);
virtual ~BEncoder();
/**
* Begin a dictionary.Should have a corresponding end call.
*/
void beginDict();
/**
* Begin a list. Should have a corresponding end call.
*/
void beginList();
/**
* Write an int
* @param val
*/
void write(Uint32 val);
/**
* Write an int64
* @param val
*/
void write(Uint64 val);
/**
* Write a string
* @param str
*/
void write(const TQString & str);
/**
* Write a TQByteArray
* @param data
*/
void write(const TQByteArray & data);
/**
* Write a data array
* @param data
* @param size of data
*/
void write(const Uint8* data,Uint32 size);
/**
* End a beginDict or beginList call.
*/
void end();
};
}
#endif
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