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/* <!-- copyright */
/*
* aria2 - a simple utility for downloading files faster
*
* Copyright (C) 2006 Tatsuhiro Tsujikawa
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* copyright --> */
#include "MetalinkEntry.h"
#include "Util.h"
#include <algorithm>
MetalinkEntry::MetalinkEntry() {}
MetalinkEntry::~MetalinkEntry() {
for_each(resources.begin(), resources.end(), Deleter());
}
bool MetalinkEntry::check(const string& filename) const {
#ifdef ENABLE_MESSAGE_DIGEST
unsigned char buf[20];
int digestLength;
const string* digestPtr;
MessageDigestContext::HashAlgo algo;
if(!sha1.empty()) {
digestLength = 20;
algo = MessageDigestContext::ALGO_SHA1;
digestPtr = &sha1;
} else if(!md5.empty()) {
digestLength = 16;
algo = MessageDigestContext::ALGO_MD5;
digestPtr = &md5;
} else {
return true;
}
Util::fileChecksum(filename, buf, algo);
return *digestPtr == Util::toHex(buf, digestLength);
#else
return true;
#endif //ENABLE_MESSAGE_DIGEST
}
class PrefOrder {
public:
bool operator()(const MetalinkResource* res1, const MetalinkResource* res2) {
return res1->preference > res2->preference;
}
};
void MetalinkEntry::reorderResourcesByPreference() {
random_shuffle(resources.begin(), resources.end());
sort(resources.begin(), resources.end(), PrefOrder());
}
class Supported {
public:
bool operator()(const MetalinkResource* res) {
switch(res->type) {
case MetalinkResource::TYPE_FTP:
case MetalinkResource::TYPE_HTTP:
return true;
default:
return false;
}
}
};
void MetalinkEntry::dropUnsupportedResource() {
MetalinkResources::iterator split =
partition(resources.begin(), resources.end(), Supported());
resources.erase(split, resources.end());
}
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