mirror of https://github.com/aria2/aria2
112 lines
3.1 KiB
C++
112 lines
3.1 KiB
C++
/* <!-- 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 "MetalinkRequestInfo.h"
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#include "Xml2MetalinkProcessor.h"
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#include "prefs.h"
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#include "DlAbortEx.h"
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#include "UrlRequestInfo.h"
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class AccumulateNonP2PUrl {
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private:
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Strings* urlsPtr;
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int split;
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public:
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AccumulateNonP2PUrl(Strings* urlsPtr,
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int split)
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:urlsPtr(urlsPtr),
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split(split) {}
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void operator()(const MetalinkResource* resource) {
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switch(resource->type) {
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case MetalinkResource::TYPE_HTTP:
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case MetalinkResource::TYPE_HTTPS:
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case MetalinkResource::TYPE_FTP:
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for(int s = 1; s <= split; s++) {
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urlsPtr->push_back(resource->url);
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}
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break;
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}
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}
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};
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class FindBitTorrentUrl {
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public:
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FindBitTorrentUrl() {}
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bool operator()(const MetalinkResource* resource) {
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if(resource->type == MetalinkResource::TYPE_BITTORRENT) {
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return true;
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} else {
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return false;
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}
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}
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};
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RequestInfo* MetalinkRequestInfo::execute() {
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RequestInfo* next = 0;
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Xml2MetalinkProcessor proc;
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Metalinker* metalinker = 0;
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try {
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metalinker = proc.parseFile(metalinkFile);
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MetalinkEntry* entry =
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metalinker->queryEntry(op->get(PREF_METALINK_VERSION),
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op->get(PREF_METALINK_LANGUAGE),
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op->get(PREF_METALINK_OS));
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if(entry == 0) {
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printf("No file matched with your preference.\n");
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throw new DlAbortEx("No file matched with your preference.");
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}
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entry->dropUnsupportedResource();
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MetalinkResources::iterator itr =
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find_if(entry->resources.begin(),
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entry->resources.end(),
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FindBitTorrentUrl());
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Strings urls;
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int maxConnection = 0;
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Checksum checksum;
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if(itr == entry->resources.end()) {
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entry->reorderResourcesByPreference();
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for_each(entry->resources.begin(), entry->resources.end(),
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AccumulateNonP2PUrl(&urls, op->getAsInt(PREF_SPLIT)));
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maxConnection =
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op->getAsInt(PREF_METALINK_SERVERS)*op->getAsInt(PREF_SPLIT);
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// TODO
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// set checksum
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checksum = entry->checksum;
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} else {
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// BitTorrent downloading
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urls.push_back((*itr)->url);
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}
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next = new UrlRequestInfo(urls, maxConnection, op);
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next->setChecksum(checksum);
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} catch(Exception* e) {
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logger->error("Exception caught", e);
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delete e;
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fail = true;
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}
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delete metalinker;
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return next;
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}
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