**breaking** consolidate src/tlv/*lsa* into src/lsa/*lsa*

Lsa de/serialize functions are replaced by wireEncode/Decode.
Update LSA wire formats. Change TLV assignments as required.
Update nlsrc to print using new encoding.

refs: #4787

Change-Id: Ie8d40b7836d51ea5bb444c8db208dc2b3a0d1cec
diff --git a/src/lsa/name-lsa.cpp b/src/lsa/name-lsa.cpp
new file mode 100644
index 0000000..37b7408
--- /dev/null
+++ b/src/lsa/name-lsa.cpp
@@ -0,0 +1,138 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014-2020,  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 "name-lsa.hpp"
+#include "tlv/tlv-nlsr.hpp"
+
+namespace nlsr {
+
+NameLsa::NameLsa(const ndn::Name& originRouter, uint32_t seqNo,
+                 const ndn::time::system_clock::TimePoint& timepoint,
+                 NamePrefixList& npl)
+  : Lsa(originRouter, seqNo, timepoint)
+{
+  for (const auto& name : npl.getNames()) {
+    addName(name);
+  }
+}
+
+NameLsa::NameLsa(const ndn::Block& block)
+{
+  wireDecode(block);
+}
+
+template<ndn::encoding::Tag TAG>
+size_t
+NameLsa::wireEncode(ndn::EncodingImpl<TAG>& block) const
+{
+  size_t totalLength = 0;
+
+  auto names = m_npl.getNames();
+
+  for (auto it = names.rbegin();  it != names.rend(); ++it) {
+    totalLength += it->wireEncode(block);
+  }
+
+  totalLength += Lsa::wireEncode(block);
+
+  totalLength += block.prependVarNumber(totalLength);
+  totalLength += block.prependVarNumber(ndn::tlv::nlsr::NameLsa);
+
+  return totalLength;
+}
+
+NDN_CXX_DEFINE_WIRE_ENCODE_INSTANTIATIONS(NameLsa);
+
+const ndn::Block&
+NameLsa::wireEncode() const
+{
+  if (m_wire.hasWire() && m_baseWire.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
+NameLsa::wireDecode(const ndn::Block& wire)
+{
+  m_wire = wire;
+
+  if (m_wire.type() != ndn::tlv::nlsr::NameLsa) {
+    BOOST_THROW_EXCEPTION(Error("Expected NameLsa Block, but Block is of a different type: #" +
+                                ndn::to_string(m_wire.type())));
+  }
+
+  m_wire.parse();
+
+  ndn::Block::element_const_iterator val = m_wire.elements_begin();
+
+  if (val != m_wire.elements_end() && val->type() == ndn::tlv::nlsr::Lsa) {
+    Lsa::wireDecode(*val);
+    ++val;
+  }
+  else {
+    BOOST_THROW_EXCEPTION(Error("Missing required Lsa field"));
+  }
+
+  NamePrefixList npl;
+  for (; val != m_wire.elements_end(); ++val) {
+    if (val->type() == ndn::tlv::Name) {
+      npl.insert(ndn::Name(*val));
+    }
+    else {
+      BOOST_THROW_EXCEPTION(Error("Expected Name Block, but Block is of a different type: #" +
+                                  ndn::to_string(m_wire.type())));
+    }
+  }
+
+  m_npl = npl;
+}
+
+bool
+NameLsa::isEqualContent(const NameLsa& other) const
+{
+  return m_npl == other.getNpl();
+}
+
+std::ostream&
+operator<<(std::ostream& os, const NameLsa& lsa)
+{
+  os << lsa.toString();
+  os << "      Names:\n";
+  int i = 0;
+  auto names = lsa.getNpl().getNames();
+  for (const auto& name : names) {
+    os << "        Name " << i++ << ": " << name << "\n";
+  }
+
+  return os;
+}
+
+} // namespace nlsr