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/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2013 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
//
// Compile and link like this:
// $ g++ -Wall -O2 -g -std=c++11 -o libaria2ex libaria2ex.cc -laria2
#include <iostream>
#include <chrono>
#include <aria2/aria2.h>
int downloadEventCallback(aria2::Session* session, aria2::DownloadEvent event,
aria2::A2Gid gid, void* userData)
{
switch (event) {
case aria2::EVENT_ON_DOWNLOAD_COMPLETE:
std::cerr << "COMPLETE";
break;
case aria2::EVENT_ON_DOWNLOAD_ERROR:
std::cerr << "ERROR";
break;
default:
return 0;
}
std::cerr << " [" << aria2::gidToHex(gid) << "] ";
aria2::DownloadHandle* dh = aria2::getDownloadHandle(session, gid);
if (!dh)
return 0;
if (dh->getNumFiles() > 0) {
aria2::FileData f = dh->getFile(1);
// Path may be empty if the file name has not been determined yet.
if (f.path.empty()) {
if (!f.uris.empty()) {
std::cerr << f.uris[0].uri;
}
}
else {
std::cerr << f.path;
}
}
aria2::deleteDownloadHandle(dh);
std::cerr << std::endl;
return 0;
}
int main(int argc, char** argv)
{
int rv;
if (argc < 2) {
std::cerr << "Usage: libaria2ex URI [URI...]\n"
<< "\n"
<< " Download given URIs in parallel in the current directory."
<< std::endl;
exit(EXIT_SUCCESS);
}
aria2::libraryInit();
// session is actually singleton: 1 session per process
aria2::Session* session;
// Create default configuration. The libaria2 takes care of signal
// handling.
aria2::SessionConfig config;
// Add event callback
config.downloadEventCallback = downloadEventCallback;
session = aria2::sessionNew(aria2::KeyVals(), config);
// Add download item to session
for (int i = 1; i < argc; ++i) {
std::vector<std::string> uris = {argv[i]};
aria2::KeyVals options;
rv = aria2::addUri(session, nullptr, uris, options);
if (rv < 0) {
std::cerr << "Failed to add download " << uris[0] << std::endl;
}
}
auto start = std::chrono::steady_clock::now();
for (;;) {
rv = aria2::run(session, aria2::RUN_ONCE);
if (rv != 1) {
break;
}
// the application can call aria2 API to add URI or query progress
// here
auto now = std::chrono::steady_clock::now();
auto count =
std::chrono::duration_cast<std::chrono::milliseconds>(now - start)
.count();
// Print progress information once per 500ms
if (count >= 500) {
start = now;
aria2::GlobalStat gstat = aria2::getGlobalStat(session);
std::cerr << "Overall #Active:" << gstat.numActive
<< " #waiting:" << gstat.numWaiting
<< " D:" << gstat.downloadSpeed / 1024 << "KiB/s"
<< " U:" << gstat.uploadSpeed / 1024 << "KiB/s " << std::endl;
std::vector<aria2::A2Gid> gids = aria2::getActiveDownload(session);
for (const auto& gid : gids) {
aria2::DownloadHandle* dh = aria2::getDownloadHandle(session, gid);
if (dh) {
std::cerr << " [" << aria2::gidToHex(gid) << "] "
<< dh->getCompletedLength() << "/" << dh->getTotalLength()
<< "("
<< (dh->getTotalLength() > 0
? (100 * dh->getCompletedLength() /
dh->getTotalLength())
: 0)
<< "%)"
<< " D:" << dh->getDownloadSpeed() / 1024
<< "KiB/s, U:" << dh->getUploadSpeed() / 1024 << "KiB/s"
<< std::endl;
aria2::deleteDownloadHandle(dh);
}
}
}
}
rv = aria2::sessionFinal(session);
aria2::libraryDeinit();
return rv;
}
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