publisher: implement routing table dataset publisher

refs: #3631, #3634

Change-Id: I7e961fdd0857690bee65d2bdfa4cf3de90ccac06
diff --git a/src/tlv/routing-table-entry.hpp b/src/tlv/routing-table-entry.hpp
new file mode 100644
index 0000000..176becb
--- /dev/null
+++ b/src/tlv/routing-table-entry.hpp
@@ -0,0 +1,154 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014-2018,  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/>.
+ **/
+
+#ifndef NLSR_TLV_ROUTING_TABLE_ENTRY_HPP
+#define NLSR_TLV_ROUTING_TABLE_ENTRY_HPP
+
+#include "destination.hpp"
+#include "nexthop.hpp"
+
+#include <ndn-cxx/util/time.hpp>
+#include <ndn-cxx/encoding/block.hpp>
+#include <ndn-cxx/encoding/encoding-buffer.hpp>
+#include <ndn-cxx/encoding/tlv.hpp>
+#include <ndn-cxx/name.hpp>
+
+#include <list>
+
+namespace nlsr {
+namespace tlv {
+
+/*! \brief Data abstraction for RouteTableInfo
+ *
+ *   RouteTableInfo := ROUTINGTABLE-TYPE TLV-LENGTH
+ *                       Destination
+ *                       NexthopList*
+ *
+ * \sa https://redmine.named-data.net/projects/nlsr/wiki/Routing_Table_DataSet
+ */
+class RoutingTable
+{
+public:
+  class Error : public ndn::tlv::Error
+  {
+  public:
+    explicit
+    Error(const std::string& what)
+      : ndn::tlv::Error(what)
+    {
+    }
+  };
+
+  typedef std::list<NextHop> HopList;
+  typedef HopList::const_iterator const_iterator;
+
+  RoutingTable();
+
+  explicit
+  RoutingTable(const ndn::Block& block);
+
+  const Destination&
+  getDestination() const
+  {
+    return m_des;
+  }
+
+  RoutingTable&
+  setDestination(const Destination& des)
+  {
+    m_des = des;
+    m_wire.reset();
+    return *this;
+  }
+
+  uint64_t
+  getRtSize() const
+  {
+    return m_size;
+  }
+
+  RoutingTable&
+  setRtSize(uint64_t size)
+  {
+    m_size = size;
+    m_wire.reset();
+    return *this;
+  }
+
+  bool
+  hasNexthops() const;
+
+  const std::list<NextHop>&
+  getNextHops() const
+  {
+    return m_nexthops;
+  }
+
+  RoutingTable&
+  addNexthops(const NextHop& nexthop);
+
+  RoutingTable&
+  clearNexthops();
+
+  template<ndn::encoding::Tag TAG>
+  size_t
+  wireEncode(ndn::EncodingImpl<TAG>& block) const;
+
+  const ndn::Block&
+  wireEncode() const;
+
+  void
+  wireDecode(const ndn::Block& wire);
+
+  const_iterator
+  begin() const;
+
+  const_iterator
+  end() const;
+
+private:
+  Destination m_des;
+  uint64_t m_size;
+  bool m_hasNexthops;
+  HopList m_nexthops;
+
+  mutable ndn::Block m_wire;
+};
+
+inline RoutingTable::const_iterator
+RoutingTable::begin() const
+{
+  return m_nexthops.begin();
+}
+
+inline RoutingTable::const_iterator
+RoutingTable::end() const
+{
+  return m_nexthops.end();
+}
+
+std::ostream&
+operator<<(std::ostream& os, const RoutingTable& routetable);
+
+} // namespace tlv
+} // namespace nlsr
+
+#endif // NLSR_TLV_ROUTING_TABLE_ENTRY_HPP