tlv: add LSDB dataset tlv abstractions
refs #2280
Change-Id: I2d0d238686e28d1c25a7821a47352fcd589df823
diff --git a/src/tlv/adjacency.cpp b/src/tlv/adjacency.cpp
new file mode 100644
index 0000000..e9912b0
--- /dev/null
+++ b/src/tlv/adjacency.cpp
@@ -0,0 +1,148 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014-2015, The University of Memphis,
+ * Regents of the University of California,
+ * Arizona Board of Regents.
+ *
+ * This file is part of NLSR (Named-data Link State Routing).
+ * See AUTHORS.md for complete list of NLSR authors and contributors.
+ *
+ * NLSR 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 3 of the License, or (at your option) any later version.
+ *
+ * NLSR 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
+ * NLSR, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+#include "adjacency.hpp"
+#include "tlv-nlsr.hpp"
+
+#include <ndn-cxx/util/concepts.hpp>
+#include <ndn-cxx/encoding/block-helpers.hpp>
+
+namespace nlsr {
+namespace tlv {
+
+BOOST_CONCEPT_ASSERT((ndn::WireEncodable<Adjacency>));
+BOOST_CONCEPT_ASSERT((ndn::WireDecodable<Adjacency>));
+static_assert(std::is_base_of<ndn::tlv::Error, Adjacency::Error>::value,
+ "Adjacency::Error must inherit from tlv::Error");
+
+Adjacency::Adjacency()
+ : m_cost(0)
+{
+}
+
+Adjacency::Adjacency(const ndn::Block& block)
+{
+ wireDecode(block);
+}
+
+template<bool T>
+size_t
+Adjacency::wireEncode(ndn::EncodingImpl<T>& block) const
+{
+ size_t totalLength = 0;
+
+ totalLength += ndn::prependNonNegativeIntegerBlock(block,
+ ndn::tlv::nlsr::Cost,
+ m_cost);
+
+ totalLength += block.prependByteArrayBlock(
+ ndn::tlv::nlsr::Uri, reinterpret_cast<const uint8_t*>(m_uri.c_str()), m_uri.size());
+
+ totalLength += m_name.wireEncode(block);
+
+ totalLength += block.prependVarNumber(totalLength);
+ totalLength += block.prependVarNumber(ndn::tlv::nlsr::Adjacency);
+
+ return totalLength;
+}
+
+template size_t
+Adjacency::wireEncode<true>(ndn::EncodingImpl<true>& block) const;
+
+template size_t
+Adjacency::wireEncode<false>(ndn::EncodingImpl<false>& block) const;
+
+const ndn::Block&
+Adjacency::wireEncode() const
+{
+ if (m_wire.hasWire()) {
+ return m_wire;
+ }
+
+ ndn::EncodingEstimator estimator;
+ size_t estimatedSize = wireEncode(estimator);
+
+ ndn::EncodingBuffer buffer(estimatedSize, 0);
+ wireEncode(buffer);
+
+ m_wire = buffer.block();
+
+ return m_wire;
+}
+
+void
+Adjacency::wireDecode(const ndn::Block& wire)
+{
+ m_name.clear();
+ m_uri = "";
+ m_cost = 0;
+
+ m_wire = wire;
+
+ if (m_wire.type() != ndn::tlv::nlsr::Adjacency) {
+ std::stringstream error;
+ error << "Expected Adjacency Block, but Block is of a different type: #"
+ << m_wire.type();
+ throw Error(error.str());
+ }
+
+ m_wire.parse();
+
+ ndn::Block::element_const_iterator val = m_wire.elements_begin();
+
+ if (val != m_wire.elements_end() && val->type() == ndn::tlv::Name) {
+ m_name.wireDecode(*val);
+ ++val;
+ }
+ else {
+ throw Error("Missing required Name field");
+ }
+
+ if (val != m_wire.elements_end() && val->type() == ndn::tlv::nlsr::Uri) {
+ m_uri.assign(reinterpret_cast<const char*>(val->value()), val->value_size());
+ ++val;
+ }
+ else {
+ throw Error("Missing required Uri field");
+ }
+
+ if (val != m_wire.elements_end() && val->type() == ndn::tlv::nlsr::Cost) {
+ m_cost = ndn::readNonNegativeInteger(*val);
+ ++val;
+ }
+ else {
+ throw Error("Missing required Cost field");
+ }
+}
+
+std::ostream&
+operator<<(std::ostream& os, const Adjacency& adjacency)
+{
+ os << "Adjacency("
+ << "Name: " << adjacency.getName() << ", "
+ << "Uri: " << adjacency.getUri() << ", "
+ << "Cost: " << adjacency.getCost() << ")";
+
+ return os;
+}
+
+} // namespace tlv
+} // namespace nlsr