tools: nfdc help command
refs #3780
Change-Id: Ibd0e37bad127a38e582864fadd81afadc74baf48
diff --git a/tools/nfdc/help.hpp b/tools/nfdc/help.hpp
new file mode 100644
index 0000000..4fd2dc5
--- /dev/null
+++ b/tools/nfdc/help.hpp
@@ -0,0 +1,53 @@
+/* -*- 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_HELP_HPP
+#define NFD_TOOLS_NFDC_HELP_HPP
+
+#include "command-parser.hpp"
+
+namespace nfd {
+namespace tools {
+namespace nfdc {
+
+void
+helpList(std::ostream& os, const CommandParser& parser,
+ ParseMode mode = ParseMode::ONE_SHOT, const std::string& noun = "");
+
+/** \brief the 'help' command
+ */
+int
+help(ExecuteContext& ctx, const CommandParser& parser, std::ostream& os);
+
+/** \brief registers 'help' command
+ */
+void
+registerHelpCommand(CommandParser& parser);
+
+} // namespace nfdc
+} // namespace tools
+} // namespace nfd
+
+#endif // NFD_TOOLS_NFDC_HELP_HPP