mirror of https://github.com/aria2/aria2
91 lines
2.9 KiB
C++
91 lines
2.9 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - The high speed download utility
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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/* copyright --> */
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#include "BencodeVisitor.h"
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#include "Data.h"
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#include "List.h"
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#include "Dictionary.h"
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#include "Util.h"
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#include <functional>
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#include <algorithm>
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namespace aria2 {
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BencodeVisitor::BencodeVisitor() {}
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BencodeVisitor::~BencodeVisitor() {}
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void BencodeVisitor::visit(const Data* d)
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{
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if(d->isNumber()) {
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_bencodedData += "i"+d->toString()+"e";
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} else {
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_bencodedData += Util::itos(d->getLen())+":"+d->toString();
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}
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}
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void BencodeVisitor::visit(const List* l)
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{
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_bencodedData += "l";
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std::for_each(l->getList().begin(), l->getList().end(),
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std::bind2nd(std::mem_fun(&MetaEntry::accept), this));
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_bencodedData += "e";
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}
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void BencodeVisitor::visit(const Dictionary* d)
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{
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_bencodedData += "d";
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for(std::deque<std::string>::const_iterator itr = d->getOrder().begin(); itr != d->getOrder().end(); ++itr) {
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_bencodedData += Util::itos((int32_t)(*itr).size());
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_bencodedData += ":";
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_bencodedData += *itr;
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d->get(*itr)->accept(this);
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}
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_bencodedData += "e";
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}
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void BencodeVisitor::visit(const MetaEntry* e)
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{
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if(dynamic_cast<const Data*>(e) != 0) {
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visit(reinterpret_cast<const Data*>(e));
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} else if(dynamic_cast<const List*>(e) != 0) {
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visit(reinterpret_cast<const List*>(e));
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} else if(dynamic_cast<const Dictionary*>(e) != 0) {
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visit(reinterpret_cast<const Dictionary*>(e));
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}
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}
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} // namespace aria2
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