mirror of https://github.com/aria2/aria2
86 lines
2.4 KiB
C++
86 lines
2.4 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 "MetalinkEntry.h"
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#include "Util.h"
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#include <algorithm>
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MetalinkEntry::MetalinkEntry() {}
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MetalinkEntry::~MetalinkEntry() {
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for_each(resources.begin(), resources.end(), Deleter());
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}
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bool MetalinkEntry::check(const string& filename) const {
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#ifdef ENABLE_MESSAGE_DIGEST
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unsigned char buf[20];
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int digestLength;
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const string* digestPtr;
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MessageDigestContext::HashAlgo algo;
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if(!sha1.empty()) {
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digestLength = 20;
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algo = MessageDigestContext::ALGO_SHA1;
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digestPtr = &sha1;
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} else if(!md5.empty()) {
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digestLength = 16;
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algo = MessageDigestContext::ALGO_MD5;
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digestPtr = &md5;
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} else {
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return true;
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}
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Util::fileChecksum(filename, buf, algo);
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return *digestPtr == Util::toHex(buf, digestLength);
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#else
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return true;
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#endif //ENABLE_MESSAGE_DIGEST
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}
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class PrefOrder {
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public:
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bool operator()(const MetalinkResource* res1, const MetalinkResource* res2) {
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return res1->preference > res2->preference;
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}
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};
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void MetalinkEntry::reorderResourcesByPreference() {
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random_shuffle(resources.begin(), resources.end());
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sort(resources.begin(), resources.end(), PrefOrder());
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}
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class Supported {
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public:
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bool operator()(const MetalinkResource* res) {
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switch(res->type) {
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case MetalinkResource::TYPE_FTP:
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case MetalinkResource::TYPE_HTTP:
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return true;
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default:
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return false;
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}
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}
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};
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void MetalinkEntry::dropUnsupportedResource() {
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MetalinkResources::iterator split =
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partition(resources.begin(), resources.end(), Supported());
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resources.erase(split, resources.end());
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}
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