tools: merge nfd-status into nfdc

nfd-status functionality is accessible through `nfdc legacy-nfd-status` subcommand,
and nfd-status is replaced with a shell script calling this subcommand.

refs #3749

Change-Id: Iab03f3bc9ddb4333a0b6ca5fb9c67f54e9960ab4
diff --git a/tools/nfdc/strategy-choice-module.cpp b/tools/nfdc/strategy-choice-module.cpp
new file mode 100644
index 0000000..c32b5aa
--- /dev/null
+++ b/tools/nfdc/strategy-choice-module.cpp
@@ -0,0 +1,85 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014-2016,  Regents of the University of California,
+ *                           Arizona Board of Regents,
+ *                           Colorado State University,
+ *                           University Pierre & Marie Curie, Sorbonne University,
+ *                           Washington University in St. Louis,
+ *                           Beijing Institute of Technology,
+ *                           The University of Memphis.
+ *
+ * This file is part of NFD (Named Data Networking Forwarding Daemon).
+ * See AUTHORS.md for complete list of NFD authors and contributors.
+ *
+ * NFD 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.
+ *
+ * NFD 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
+ * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "strategy-choice-module.hpp"
+#include "format-helpers.hpp"
+
+namespace nfd {
+namespace tools {
+namespace nfdc {
+
+void
+StrategyChoiceModule::fetchStatus(Controller& controller,
+                                  const function<void()>& onSuccess,
+                                  const Controller::CommandFailCallback& onFailure,
+                                  const CommandOptions& options)
+{
+  controller.fetch<ndn::nfd::StrategyChoiceDataset>(
+    [this, onSuccess] (const std::vector<StrategyChoice>& result) {
+      m_status = result;
+      onSuccess();
+    },
+    onFailure, options);
+}
+
+void
+StrategyChoiceModule::formatStatusXml(std::ostream& os) const
+{
+  os << "<strategyChoices>";
+  for (const StrategyChoice& item : m_status) {
+    this->formatItemXml(os, item);
+  }
+  os << "</strategyChoices>";
+}
+
+void
+StrategyChoiceModule::formatItemXml(std::ostream& os, const StrategyChoice& item) const
+{
+  os << "<strategyChoice>";
+  os << "<namespace>" << xml::Text{item.getName().toUri()} << "</namespace>";
+  os << "<strategy><name>" << xml::Text{item.getStrategy().toUri()} << "</name></strategy>";
+  os << "</strategyChoice>";
+}
+
+void
+StrategyChoiceModule::formatStatusText(std::ostream& os) const
+{
+  os << "Strategy choices:\n";
+  for (const StrategyChoice& item : m_status) {
+    this->formatItemText(os, item);
+  }
+}
+
+void
+StrategyChoiceModule::formatItemText(std::ostream& os, const StrategyChoice& item) const
+{
+  os << "  " << item.getName()
+     << " strategy=" << item.getStrategy()
+     << "\n";
+}
+
+} // namespace nfdc
+} // namespace tools
+} // namespace nfd