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/* <!-- 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 "BencodeVisitor.h"
#include "Data.h"
#include "List.h"
#include "Dictionary.h"
#include "Util.h"
#include <functional>
#include <algorithm>
namespace aria2 {
BencodeVisitor::BencodeVisitor() {}
BencodeVisitor::~BencodeVisitor() {}
void BencodeVisitor::visit(const Data* d)
{
if(d->isNumber()) {
_bencodedData += "i"+d->toString()+"e";
} else {
_bencodedData += Util::itos(d->getLen())+":"+d->toString();
}
}
void BencodeVisitor::visit(const List* l)
{
_bencodedData += "l";
std::for_each(l->getList().begin(), l->getList().end(),
std::bind2nd(std::mem_fun(&MetaEntry::accept), this));
_bencodedData += "e";
}
void BencodeVisitor::visit(const Dictionary* d)
{
_bencodedData += "d";
for(std::deque<std::string>::const_iterator itr = d->getOrder().begin(); itr != d->getOrder().end(); ++itr) {
_bencodedData += Util::uitos((*itr).size());
_bencodedData += ":";
_bencodedData += *itr;
d->get(*itr)->accept(this);
}
_bencodedData += "e";
}
void BencodeVisitor::visit(const MetaEntry* e)
{
if(dynamic_cast<const Data*>(e) != 0) {
visit(reinterpret_cast<const Data*>(e));
} else if(dynamic_cast<const List*>(e) != 0) {
visit(reinterpret_cast<const List*>(e));
} else if(dynamic_cast<const Dictionary*>(e) != 0) {
visit(reinterpret_cast<const Dictionary*>(e));
}
}
} // namespace aria2
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