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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_ITERATABLE_CHUNK_CHECKSUM_VALIDATOR_H_
+#define _D_ITERATABLE_CHUNK_CHECKSUM_VALIDATOR_H_
+
+#include "common.h"
+#include "BitfieldMan.h"
+#include "ChunkChecksum.h"
+#include "DiskWriter.h"
+#include "LogFactory.h"
+
+class IteratableChunkChecksumValidator
+{
+private:
+  DiskWriterHandle _diskWriter;
+  BitfieldMan* _bitfield;
+  int32_t _currentIndex;
+  ChunkChecksumHandle _chunkChecksum;
+  const Logger* logger;
+
+  string calculateActualChecksum();
+public:
+  IteratableChunkChecksumValidator():_diskWriter(0), _bitfield(0), _currentIndex(0), _chunkChecksum(0), logger(LogFactory::getInstance()) {}
+
+  bool canValidate() const;
+
+  void init();
+
+  void validateChunk();
+
+  bool finished() const
+  {
+    return _currentIndex >= _chunkChecksum->countChecksum();
+  }
+
+  void setDiskWriter(const DiskWriterHandle& diskWriter)
+  {
+    _diskWriter = diskWriter;
+  }
+
+  void setBitfield(BitfieldMan* bitfield)
+  {
+    _bitfield = bitfield;
+  }
+
+  void setChunkChecksum(const ChunkChecksumHandle& chunkChecksum)
+  {
+    _chunkChecksum = chunkChecksum;
+  }
+
+  int64_t getCurrentOffset() const
+  {
+    return ((int64_t)_currentIndex)*_chunkChecksum->getChecksumLength();
+  }
+};
+
+typedef SharedHandle<IteratableChunkChecksumValidator> IteratableChunkChecksumValidatorHandle;
+
+#endif // _D_ITERATABLE_CHUNK_CHECKSUM_VALIDATOR_H_