mirror of https://github.com/aria2/aria2
123 lines
4.2 KiB
C++
123 lines
4.2 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 "MetalinkPostDownloadHandler.h"
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#include <deque>
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#include "RequestGroup.h"
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#include "Metalink2RequestGroup.h"
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#include "Logger.h"
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#include "LogFactory.h"
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#include "DiskAdaptor.h"
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#include "PieceStorage.h"
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#include "DownloadHandlerConstants.h"
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#include "ContentTypeRequestGroupCriteria.h"
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#include "Exception.h"
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#include "prefs.h"
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#include "Option.h"
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#include "DownloadContext.h"
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#include "download_helper.h"
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#include "fmt.h"
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#include "FileEntry.h"
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namespace aria2 {
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MetalinkPostDownloadHandler::MetalinkPostDownloadHandler()
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{
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SharedHandle<RequestGroupCriteria> cri
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(new ContentTypeRequestGroupCriteria
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(getMetalinkContentTypes(), getMetalinkExtensions()));
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setCriteria(cri);
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}
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MetalinkPostDownloadHandler::~MetalinkPostDownloadHandler() {}
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namespace {
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const std::string& getBaseUri(RequestGroup* requestGroup)
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{
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const SharedHandle<DownloadContext>& dctx =
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requestGroup->getDownloadContext();
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if(dctx->getFileEntries().empty()) {
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return A2STR::NIL;
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} else {
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// TODO Check download result for each URI
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const SharedHandle<FileEntry>& entry = dctx->getFirstFileEntry();
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const std::deque<std::string>& spentUris = entry->getSpentUris();
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if(spentUris.empty()) {
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const std::deque<std::string>& remainingUris = entry->getRemainingUris();
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if(remainingUris.empty()) {
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return A2STR::NIL;
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} else {
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return remainingUris.front();
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}
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} else {
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return spentUris.back();
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}
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}
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}
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} // namespace
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void MetalinkPostDownloadHandler::getNextRequestGroups
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(std::vector<SharedHandle<RequestGroup> >& groups,
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RequestGroup* requestGroup)
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{
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A2_LOG_DEBUG(fmt("Generating RequestGroups for Metalink file %s",
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requestGroup->getFirstFilePath().c_str()));
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SharedHandle<DiskAdaptor> diskAdaptor =
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requestGroup->getPieceStorage()->getDiskAdaptor();
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try {
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diskAdaptor->openExistingFile();
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//requestOption.put(PREF_DIR, requestGroup->getDownloadContext()->getDir());
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const std::string& baseUri = getBaseUri(requestGroup);
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std::vector<SharedHandle<RequestGroup> > newRgs;
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Metalink2RequestGroup().generate(newRgs, diskAdaptor,
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requestGroup->getOption(), baseUri);
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requestGroup->followedBy(newRgs.begin(), newRgs.end());
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SharedHandle<MetadataInfo> mi =
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createMetadataInfoFromFirstFileEntry(requestGroup->getGroupId(),
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requestGroup->getDownloadContext());
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if(mi) {
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setMetadataInfo(newRgs.begin(), newRgs.end(), mi);
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}
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groups.insert(groups.end(), newRgs.begin(), newRgs.end());
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diskAdaptor->closeFile();
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} catch(Exception& e) {
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diskAdaptor->closeFile();
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throw;
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}
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}
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} // namespace aria2
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