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a37aaa9c0c
To add the ability to resume downloading a partially downloaded file which is downloaded from the beginning: * src/FileAllocator.h: Made abstract class. New DefaultFileAllocator takes this role. * src/main.cc: Added -c option. * src/BitfieldMan.h, src/BitfieldMan.cc (setBitRange): New function. * src/DiskWriter.h (openExistingFile): Added totalLength argument. * src/prefs.h (PREF_CONTINUE): New definition. * src/SegmentMan.h, src/SegmentMan.cc (markPieceDone): New function. * src/DefaultDiskWriter.cc (createNewDiskWriter): Add GlowFileAllocator to the new object. * src/AbstractDiskWriter.h (glowFileAllocator): New variable. * src/AbstractDiskWriter.cc (openExistingFile): Now preallocate file space from the end of the existing file if totalLength argument is specified and grater than 0. * src/UrlRequestInfo.cc: If -c option is specified and the file to download exists in local, continue the download of the file. --allow-overwrite=true is assumed in this context. * src/DefaultFileAllocator.h, src/DefaultFileAllocator.cc: New class. * src/GlowFileAllocator.h, src/GlowFileAllocator.cc: New class. Throw exception if --check-integrity=true is specified but chunk checksums are not provided: * src/UrlRequestInfo.cc
86 lines
3.1 KiB
C++
86 lines
3.1 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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#include "DefaultDiskWriter.h"
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#include "DlAbortEx.h"
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#include "message.h"
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#include "DefaultFileAllocator.h"
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#include "GlowFileAllocator.h"
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#include "prefs.h"
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#include "Util.h"
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#include <errno.h>
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#include <unistd.h>
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DefaultDiskWriter::DefaultDiskWriter():AbstractDiskWriter() {}
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DefaultDiskWriter::~DefaultDiskWriter() {}
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void DefaultDiskWriter::initAndOpenFile(const string& filename,
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int64_t totalLength)
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{
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createFile(filename);
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try {
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if(totalLength > 0) {
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if(fileAllocator.isNull()) {
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ftruncate(fd, totalLength);
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} else {
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logger->notice("Allocating file %s, %s bytes",
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filename.c_str(),
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Util::ullitos(totalLength).c_str());
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fileAllocator->allocate(fd, totalLength);
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}
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}
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} catch(RecoverableException *e) {
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throw new DlAbortEx(e, EX_FILE_WRITE, filename.c_str(), strerror(errno));
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}
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}
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DefaultDiskWriter* DefaultDiskWriter::createNewDiskWriter(const Option* option)
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{
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DefaultDiskWriter* diskWriter = new DefaultDiskWriter();
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if(option->get(PREF_FILE_ALLOCATION) == V_PREALLOC) {
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DefaultFileAllocatorHandle allocator = new DefaultFileAllocator();
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allocator->setFileAllocationMonitor(FileAllocationMonitorFactory::getFactory()->createNewMonitor());
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diskWriter->setFileAllocator(allocator);
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GlowFileAllocatorHandle glowAllocator = new GlowFileAllocator();
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glowAllocator->setFileAllocationMonitor(FileAllocationMonitorFactory::getFactory()->createNewMonitor());
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diskWriter->setGlowFileAllocator(glowAllocator);
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} else {
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diskWriter->setFileAllocator(0);
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diskWriter->setGlowFileAllocator(0);
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}
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return diskWriter;
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}
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