blob: 76fe18c0a565c690aad33872fa2542e52bc5bc3d [file] [log] [blame]
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
* Copyright (c) 2013-2016 Regents of the University of California.
*
* This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
*
* ndn-cxx library is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later version.
*
* ndn-cxx library 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 Lesser General Public License for more details.
*
* You should have received copies of the GNU General Public License and GNU Lesser
* General Public License along with ndn-cxx, e.g., in COPYING.md file. If not, see
* <http://www.gnu.org/licenses/>.
*
* See AUTHORS.md for complete list of ndn-cxx authors and contributors.
*/
#include "io.hpp"
#include "../encoding/buffer-stream.hpp"
#include "../security/transform.hpp"
namespace ndn {
namespace io {
optional<Block>
loadBlock(std::istream& is, IoEncoding encoding)
{
namespace t = ndn::security::transform;
OBufferStream os;
try {
switch (encoding) {
case NO_ENCODING:
t::streamSource(is) >> t::streamSink(os);
break;
case BASE64:
t::streamSource(is) >> t::stripSpace("\n") >> t::base64Decode(false) >> t::streamSink(os);
break;
case HEX:
t::streamSource(is) >> t::hexDecode() >> t::streamSink(os);
break;
default:
return nullopt;
}
}
catch (const t::Error&) {
return nullopt;
}
try {
return make_optional<Block>(os.buf());
}
catch (const tlv::Error&) {
return nullopt;
}
}
void
saveBlock(const Block& block, std::ostream& os, IoEncoding encoding)
{
namespace t = ndn::security::transform;
try {
switch (encoding) {
case NO_ENCODING:
t::bufferSource(block.wire(), block.size()) >> t::streamSink(os);
break;
case BASE64:
t::bufferSource(block.wire(), block.size()) >> t::base64Encode() >> t::streamSink(os);
break;
case HEX:
t::bufferSource(block.wire(), block.size()) >> t::hexEncode(true) >> t::streamSink(os);
break;
default:
BOOST_THROW_EXCEPTION(Error("unrecognized IoEncoding"));
}
}
catch (const t::Error& e) {
BOOST_THROW_EXCEPTION(Error(e.what()));
}
}
} // namespace io
} // namespace ndn