aria2/src/download_handlers.cc

135 lines
4.3 KiB
C++

/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* 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., 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 --> */
#include "download_handlers.h"
#include "DownloadHandlerConstants.h"
#include "ContentTypeRequestGroupCriteria.h"
#include "MemoryBufferPreDownloadHandler.h"
#include "a2functional.h"
#ifdef ENABLE_METALINK
# include "MetalinkPostDownloadHandler.h"
#endif // ENABLE_METALINK
#ifdef ENABLE_BITTORRENT
# include "BtPostDownloadHandler.h"
# include "MemoryBencodePreDownloadHandler.h"
# include "UTMetadataPostDownloadHandler.h"
#endif // ENABLE_BITTORRENT
namespace aria2 {
namespace download_handlers {
namespace {
std::unique_ptr<PreDownloadHandler> memoryPreDownloadHandler;
} // namespace
const PreDownloadHandler* getMemoryPreDownloadHandler()
{
if(!memoryPreDownloadHandler) {
memoryPreDownloadHandler = make_unique<MemoryBufferPreDownloadHandler>();
}
return memoryPreDownloadHandler.get();
}
#ifdef ENABLE_METALINK
namespace {
std::unique_ptr<PreDownloadHandler> metalinkPreDownloadHandler;
std::unique_ptr<PostDownloadHandler> metalinkPostDownloadHandler;
} // namespace
const PreDownloadHandler* getMetalinkPreDownloadHandler()
{
if(!metalinkPreDownloadHandler) {
metalinkPreDownloadHandler = make_unique<MemoryBufferPreDownloadHandler>();
metalinkPreDownloadHandler->setCriteria
(make_unique<ContentTypeRequestGroupCriteria>(getMetalinkContentTypes(),
getMetalinkExtensions()));
}
return metalinkPreDownloadHandler.get();
}
const PostDownloadHandler* getMetalinkPostDownloadHandler()
{
if(!metalinkPostDownloadHandler) {
metalinkPostDownloadHandler = make_unique<MetalinkPostDownloadHandler>();
}
return metalinkPostDownloadHandler.get();
}
#endif // ENABLE_METALINK
#ifdef ENABLE_BITTORRENT
namespace {
std::unique_ptr<PreDownloadHandler> btPreDownloadHandler;
std::unique_ptr<PostDownloadHandler> btPostDownloadHandler;
std::unique_ptr<PostDownloadHandler> btMetadataPostDownloadHandler;
} // namespace
const PreDownloadHandler* getBtPreDownloadHandler()
{
if(!btPreDownloadHandler) {
btPreDownloadHandler =
make_unique<bittorrent::MemoryBencodePreDownloadHandler>();
btPreDownloadHandler->setCriteria
(make_unique<ContentTypeRequestGroupCriteria>(getBtContentTypes(),
getBtExtensions()));
}
return btPreDownloadHandler.get();
}
const PostDownloadHandler* getBtPostDownloadHandler()
{
if(!btPostDownloadHandler) {
btPostDownloadHandler = make_unique<BtPostDownloadHandler>();
}
return btPostDownloadHandler.get();
}
const PostDownloadHandler* getUTMetadataPostDownloadHandler()
{
if(!btMetadataPostDownloadHandler) {
btMetadataPostDownloadHandler =
make_unique<UTMetadataPostDownloadHandler>();
}
return btMetadataPostDownloadHandler.get();
}
#endif // ENABLE_BITTORRENT
} // namespace download_handlers
} // namespace aria2