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/* <!-- copyright */
/*
 * aria2 - The high speed download utility
 *
 * Copyright (C) 2006 Tatsuhiro Tsujikawa
 *
 * 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
 *
 * In addition, as a special exception, the copyright holders give
 * permission to link the code of portions of this program with the
 * OpenSSL library under certain conditions as described in each
 * individual source file, and distribute linked combinations
 * including the two.
 * You must obey the GNU General Public License in all respects
 * for all of the code used other than OpenSSL.  If you modify
 * file(s) with this exception, you may extend this exception to your
 * version of the file(s), but you are not obligated to do so.  If you
 * do not wish to do so, delete this exception statement from your
 * version.  If you delete this exception statement from all source
 * files in the program, then also delete it here.
 */
/* copyright --> */
#ifndef _D_METALINK_PARSER_CONTROLLER_H_
#define _D_METALINK_PARSER_CONTROLLER_H_

#include "common.h"
#include "SharedHandle.h"
#include <string>
#include <utility>
#include <deque>

namespace aria2 {

class Metalinker;
class MetalinkEntry;
class MetalinkResource;
class Signature;

#ifdef ENABLE_MESSAGE_DIGEST
class Checksum;
class ChunkChecksum;
#endif // ENABLE_MESSAGE_DIGEST

class MetalinkParserController {
private:
  SharedHandle<Metalinker> _metalinker;

  SharedHandle<MetalinkEntry> _tEntry;

  SharedHandle<MetalinkResource> _tResource;

#ifdef ENABLE_MESSAGE_DIGEST
  SharedHandle<Checksum> _tChecksum;

  SharedHandle<ChunkChecksum> _tChunkChecksum;

  std::deque<std::pair<size_t, std::string> > _tempChunkChecksums;
  
  std::pair<size_t, std::string> _tempHashPair;
#endif // ENABLE_MESSAGE_DIGEST

  SharedHandle<Signature> _tSignature;

  static const std::string SHA1;
public:
  MetalinkParserController();

  ~MetalinkParserController();

  const SharedHandle<Metalinker>& getResult() const
  {
    return _metalinker;
  }

  void newEntryTransaction();

  void setFileNameOfEntry(const std::string& filename);

  void setFileLengthOfEntry(uint64_t length);

  void setVersionOfEntry(const std::string& version);

  void setLanguageOfEntry(const std::string& language);

  void setOSOfEntry(const std::string& os);

  void setMaxConnectionsOfEntry(int maxConnections);

  void commitEntryTransaction();

  void cancelEntryTransaction();

  void newResourceTransaction();

  void setURLOfResource(const std::string& url);

  void setTypeOfResource(const std::string& type);

  void setLocationOfResource(const std::string& location);

  void setPreferenceOfResource(int preference);

  void setMaxConnectionsOfResource(int maxConnections);

  void commitResourceTransaction();

  void cancelResourceTransaction();

  void newChecksumTransaction();

  void setTypeOfChecksum(const std::string& type);

  void setHashOfChecksum(const std::string& md);

  void commitChecksumTransaction();

  void cancelChecksumTransaction();
  
  void newChunkChecksumTransaction();

  void setTypeOfChunkChecksum(const std::string& type);

  void setLengthOfChunkChecksum(size_t length);

  void addHashOfChunkChecksum(size_t order, const std::string& md);

  void createNewHashOfChunkChecksum(size_t order);

  void setMessageDigestOfChunkChecksum(const std::string& md);

  void addHashOfChunkChecksum();

  void commitChunkChecksumTransaction();

  void cancelChunkChecksumTransaction();

  void newSignatureTransaction();

  void setTypeOfSignature(const std::string& type);

  void setFileOfSignature(const std::string& file);

  void setBodyOfSignature(const std::string& body);

  void commitSignatureTransaction();

  void cancelSignatureTransaction();
};

} // namespace aria2

#endif // _D_METALINK_PARSER_CONTROLLER_H_