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/status-report.hpp b/tools/nfdc/status-report.hpp
new file mode 100644
index 0000000..dea9b9f
--- /dev/null
+++ b/tools/nfdc/status-report.hpp
@@ -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/>.
+ */
+
+#ifndef NFD_TOOLS_NFDC_STATUS_REPORT_HPP
+#define NFD_TOOLS_NFDC_STATUS_REPORT_HPP
+
+#include "module.hpp"
+
+namespace nfd {
+namespace tools {
+namespace nfdc {
+
+using ndn::Face;
+using ndn::security::KeyChain;
+using ndn::Validator;
+
+/** \brief collects and prints NFD status report
+ */
+class StatusReport : noncopyable
+{
+public:
+#ifdef WITH_TESTS
+  virtual
+  ~StatusReport() = default;
+#endif
+
+  /** \brief collect status via chosen \p sections
+   *
+   *  This function is blocking. It has exclusive use of \p face.
+   *
+   *  \return if status has been fetched successfully, 0;
+   *          otherwise, error code from any failed section, plus 1000000 * section index
+   */
+  uint32_t
+  collect(Face& face, KeyChain& keyChain, Validator& validator, const CommandOptions& options);
+
+  /** \brief print an XML report
+   *  \param os output stream
+   */
+  void
+  formatXml(std::ostream& os) const;
+
+  /** \brief print a text report
+   *  \param os output stream
+   */
+  void
+  formatText(std::ostream& os) const;
+
+private:
+  VIRTUAL_WITH_TESTS void
+  processEvents(Face& face);
+
+public:
+  /** \brief modules through which status is collected
+   */
+  std::vector<unique_ptr<Module>> sections;
+};
+
+} // namespace nfdc
+} // namespace tools
+} // namespace nfd
+
+#endif // NFD_TOOLS_NFDC_STATUS_REPORT_HPP