mirror of https://github.com/aria2/aria2
120 lines
4.1 KiB
C++
120 lines
4.1 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 "MultiUrlRequestInfo.h"
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#include "prefs.h"
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#include "DownloadEngineFactory.h"
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#include "RecoverableException.h"
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#include "message.h"
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#include "DNSCache.h"
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#include "TorrentRequestInfo.h"
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#include "MetalinkRequestInfo.h"
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extern volatile sig_atomic_t haltRequested;
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RequestInfoHandle MultiUrlRequestInfo::createNextRequestInfo(const string& filename) const
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{
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#ifdef ENABLE_BITTORRENT
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if(op->getAsBool(PREF_FOLLOW_TORRENT) &&
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Util::endsWith(fileInfo.filename, ".torrent")) {
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return new TorrentRequestInfo(filename, op);
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} else
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#endif // ENABLE_BITTORRENT
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#ifdef ENABLE_METALINK
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if(op->getAsBool(PREF_FOLLOW_METALINK) &&
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Util::endsWith(fileInfo.filename, ".metalink")) {
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return new MetalinkRequestInfo(filename, op);
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} else
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#endif // ENABLE_METALINK
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{
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return 0;
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}
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}
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static void handler(int signal) {
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haltRequested = true;
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}
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RequestInfos MultiUrlRequestInfo::execute() {
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{
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DNSCacheHandle dnsCache = new SimpleDNSCache();
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DNSCacheSingletonHolder::instance(dnsCache);
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}
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RequestInfos nextReqInfos;
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try {
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SharedHandle<ConsoleDownloadEngine> e(DownloadEngineFactory::newConsoleEngine(op, _requestGroups));
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e->fillCommand();
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// The number of simultaneous download is specified by PREF_MAX_SIMULTANEOUS_DOWNLOADS.
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// The remaining urls are queued into FillRequestGroupCommand.
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// It observes the number of simultaneous downloads and if it is under
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// the limit, it adds RequestGroup object from its queue to DownloadEngine.
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// This is done every 1 second. At the same time, it removes finished/error
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// RequestGroup from DownloadEngine.
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Util::setGlobalSignalHandler(SIGINT, handler, 0);
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Util::setGlobalSignalHandler(SIGTERM, handler, 0);
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e->run();
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for(RequestGroups::iterator itr = _requestGroups.begin();
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itr != _requestGroups.end(); ++itr) {
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if((*itr)->downloadFinished()) {
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RequestInfoHandle reqInfo = createNextRequestInfo((*itr)->getFilePath());
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if(!reqInfo.isNull()) {
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nextReqInfos.push_back(reqInfo);
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}
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}
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}
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RequestGroupMan rgman(_requestGroups);
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// TODO print summary of the download result
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rgman.showDownloadResults(cout);
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cout << flush;
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// TODO Do we have to print a message when some of the downloads are failed?
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if(!rgman.downloadFinished()) {
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printDownloadAbortMessage();
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}
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} catch(RecoverableException *ex) {
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logger->error("Exception caught", ex);
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delete ex;
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fail = true;
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}
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Util::setGlobalSignalHandler(SIGINT, SIG_DFL, 0);
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Util::setGlobalSignalHandler(SIGTERM, SIG_DFL, 0);
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return nextReqInfos;
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}
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