mirror of https://github.com/aria2/aria2
90 lines
2.8 KiB
C++
90 lines
2.8 KiB
C++
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/* <!-- copyright */
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/*
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* aria2 - a simple utility for downloading files faster
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* copyright --> */
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#include "DownloadCommand.h"
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#include <sys/time.h>
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#include "Util.h"
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#include "DlRetryEx.h"
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#include "HttpInitiateConnectionCommand.h"
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#include "SleepCommand.h"
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#include "InitiateConnectionCommandFactory.h"
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#include "message.h"
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DownloadCommand::DownloadCommand(int cuid, Request* req, DownloadEngine* e, Socket* s):AbstractCommand(cuid, req, e, s) {
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AbstractCommand::checkSocketIsReadable = true;
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}
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DownloadCommand::~DownloadCommand() {}
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bool DownloadCommand::executeInternal(Segment seg) {
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TransferEncoding* te = NULL;
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if(transferEncoding.size()) {
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te = getTransferEncoding(transferEncoding);
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assert(te != NULL);
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}
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int bufSize = 4096;
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char buf[bufSize];
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socket->readData(buf, bufSize);
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if(te != NULL) {
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int infbufSize = 4096;
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char infbuf[infbufSize];
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te->inflate(infbuf, infbufSize, buf, bufSize);
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e->diskWriter->writeData(infbuf, infbufSize, seg.sp+seg.ds);
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} else {
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e->diskWriter->writeData(buf, bufSize, seg.sp+seg.ds);
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}
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seg.ds += bufSize;
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if(te != NULL && te->finished()
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|| te == NULL && seg.ds >= seg.ep-seg.sp+1
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|| e->segmentMan->totalSize == 0 && bufSize == 0) {
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if(te != NULL) te->end();
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e->logger->info(MSG_DOWNLOAD_COMPLETED, cuid);
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seg.ds = seg.ep-seg.sp+1;
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seg.finish = true;
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e->segmentMan->updateSegment(seg);
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// this unit is going to download another segment.
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return prepareForNextSegment();
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} else {
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e->segmentMan->updateSegment(seg);
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e->commands.push(this);
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return false;
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}
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}
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bool DownloadCommand::prepareForRetry() {
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req->resetUrl();
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Command* command = InitiateConnectionCommandFactory::createInitiateConnectionCommand(cuid, req, e);
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SleepCommand* scom = new SleepCommand(cuid, e, command);
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e->commands.push(scom);
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return true;
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}
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bool DownloadCommand::prepareForNextSegment() {
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req->resetUrl();
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if(!e->segmentMan->finished()) {
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return AbstractCommand::prepareForRetry();
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} else {
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return true;
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}
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}
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