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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 BTTORRENTCREATOR_H
#define BTTORRENTCREATOR_H
#include <qstringlist.h>
#include "torrent.h"
#include <util/sha1hash.h>
namespace bt
{
class BEncoder;
class TorrentControl;
/**
* @author Joris Guisson
* @brief Class to generate torrent files
*
* This class generates torrent files.
* It also allows to create a TorrentControl object, so
* that we immediately can start to share the torrent.
*/
class TorrentCreator
{
// input values
QString target;
QStringList trackers;
int chunk_size;
QString name,comments;
// calculated values
Uint32 num_chunks;
Uint64 last_size;
QValueList<TorrentFile> files;
QValueList<SHA1Hash> hashes;
//
Uint32 cur_chunk;
bool priv;
Uint64 tot_size;
bool decentralized;
public:
/**
* Constructor.
* @param target The file or directory to make a torrent of
* @param trackers A list of tracker urls
* @param chunk_size The size of each chunk
* @param name The name suggestion
* @param comments The comments field of the torrent
* @param priv Private torrent or not
*/
TorrentCreator(const QString & target,const QStringList & trackers,
Uint32 chunk_size,const QString & name,
const QString & comments,bool priv,bool decentralized);
virtual ~TorrentCreator();
/**
* Calculate the hash of a chunk, this function should be called
* until it returns true. We do it this way so that the calling
* function can display a progress dialog.
* @return true if all hashes are calculated, false otherwise
*/
bool calculateHash();
/// Get the number of chunks
Uint32 getNumChunks() const {return num_chunks;}
/**
* Save the torrent file.
* @param url Filename
* @throw Error if something goes wrong
*/
void saveTorrent(const QString & url);
/**
* Make a TorrentControl object for this torrent.
* This will also create the files :
* data_dir/index
* data_dir/torrent
* data_dir/cache (symlink to target)
* @param data_dir The data directory
* @throw Error if something goes wrong
* @return The newly created object
*/
TorrentControl* makeTC(const QString & data_dir);
private:
void saveInfo(BEncoder & enc);
void saveFile(BEncoder & enc,const TorrentFile & file);
void savePieces(BEncoder & enc);
void buildFileList(const QString & dir);
bool calcHashSingle();
bool calcHashMulti();
};
}
#endif
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