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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_DISK_ADAPTOR_H_
#define _D_DISK_ADAPTOR_H_
#include "BinaryStream.h"
#include <string>
#include <vector>
#include "TimeA2.h"
namespace aria2 {
class FileEntry;
class Logger;
class FileAllocationIterator;
class DiskAdaptor:public BinaryStream {
private:
std::vector<SharedHandle<FileEntry> > fileEntries_;
bool fallocate_;
Logger* logger_;
protected:
Logger* getLogger() const
{
return logger_;
}
public:
DiskAdaptor();
virtual ~DiskAdaptor() {}
virtual void openFile() = 0;
virtual void closeFile() = 0;
virtual void openExistingFile() = 0;
virtual void initAndOpenFile() = 0;
virtual bool fileExists() = 0;
virtual uint64_t size() = 0;
template<typename InputIterator>
void setFileEntries(InputIterator first, InputIterator last)
{
fileEntries_.assign(first, last);
}
const std::vector<SharedHandle<FileEntry> >& getFileEntries() const
{
return fileEntries_;
}
virtual SharedHandle<FileAllocationIterator> fileAllocationIterator() = 0;
virtual void enableDirectIO() {}
virtual void disableDirectIO() {}
virtual void enableReadOnly() {}
virtual void disableReadOnly() {}
virtual bool isReadOnlyEnabled() const { return false; }
// Assumed each file length is stored in fileEntries or DiskAdaptor knows it.
// If each actual file's length is larger than that, truncate file to that
// length.
// Call one of openFile/openExistingFile/initAndOpenFile before calling this
// function.
virtual void cutTrailingGarbage() = 0;
// Returns the number of files, the actime and modtime of which are
// successfully changed.
virtual size_t utime(const Time& actime, const Time& modtime) = 0;
void enableFallocate()
{
fallocate_ = true;
}
void disableFallocate()
{
fallocate_ = false;
}
bool doesFallocate() const
{
return fallocate_;
}
};
typedef SharedHandle<DiskAdaptor> DiskAdaptorHandle;
} // namespace aria2
#endif // _D_DISK_ADAPTOR_H_
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