mirror of https://github.com/aria2/aria2
122 lines
3.3 KiB
C++
122 lines
3.3 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - The high speed download utility
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*
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* Copyright (C) 2006 Tatsuhiro Tsujikawa
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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/* copyright --> */
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#ifndef D_DISK_ADAPTOR_H
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#define D_DISK_ADAPTOR_H
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#include "BinaryStream.h"
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#include <string>
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#include <vector>
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#include "TimeA2.h"
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namespace aria2 {
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class FileEntry;
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class FileAllocationIterator;
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class DiskAdaptor:public BinaryStream {
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private:
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std::vector<SharedHandle<FileEntry> > fileEntries_;
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bool fallocate_;
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public:
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DiskAdaptor();
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virtual ~DiskAdaptor();
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virtual void openFile() = 0;
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virtual void closeFile() = 0;
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virtual void openExistingFile() = 0;
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virtual void initAndOpenFile() = 0;
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virtual bool fileExists() = 0;
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virtual off_t size() = 0;
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template<typename InputIterator>
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void setFileEntries(InputIterator first, InputIterator last)
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{
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fileEntries_.assign(first, last);
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}
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const std::vector<SharedHandle<FileEntry> >& getFileEntries() const
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{
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return fileEntries_;
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}
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virtual SharedHandle<FileAllocationIterator> fileAllocationIterator() = 0;
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virtual void enableReadOnly() {}
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virtual void disableReadOnly() {}
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virtual bool isReadOnlyEnabled() const { return false; }
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// Assumed each file length is stored in fileEntries or DiskAdaptor knows it.
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// If each actual file's length is larger than that, truncate file to that
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// length.
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// Call one of openFile/openExistingFile/initAndOpenFile before calling this
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// function.
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virtual void cutTrailingGarbage() = 0;
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// Returns the number of files, the actime and modtime of which are
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// successfully changed.
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virtual size_t utime(const Time& actime, const Time& modtime) = 0;
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void enableFallocate()
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{
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fallocate_ = true;
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}
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void disableFallocate()
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{
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fallocate_ = false;
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}
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bool doesFallocate() const
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{
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return fallocate_;
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}
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};
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typedef SharedHandle<DiskAdaptor> DiskAdaptorHandle;
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} // namespace aria2
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#endif // D_DISK_ADAPTOR_H
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