Rename translation units containing main() to main.cpp

Also unify style of argv declaration

Change-Id: I1dcb8689b1cd38e042a0b1f05be7f98bd2d487ed
diff --git a/tools/chunks/putchunks/main.cpp b/tools/chunks/putchunks/main.cpp
new file mode 100644
index 0000000..f5e6a34
--- /dev/null
+++ b/tools/chunks/putchunks/main.cpp
@@ -0,0 +1,156 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2016-2019, Regents of the University of California,
+ *                          Colorado State University,
+ *                          University Pierre & Marie Curie, Sorbonne University.
+ *
+ * This file is part of ndn-tools (Named Data Networking Essential Tools).
+ * See AUTHORS.md for complete list of ndn-tools authors and contributors.
+ *
+ * ndn-tools 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.
+ *
+ * ndn-tools 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
+ * ndn-tools, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
+ *
+ * @author Wentao Shang
+ * @author Steve DiBenedetto
+ * @author Andrea Tosatto
+ * @author Davide Pesavento
+ * @author Klaus Schneider
+ */
+
+#include "core/version.hpp"
+#include "producer.hpp"
+
+namespace po = boost::program_options;
+
+namespace ndn {
+namespace chunks {
+
+static void
+usage(std::ostream& os, const std::string& programName, const po::options_description& desc)
+{
+  os << "Usage: " << programName << " [options] ndn:/name\n"
+     << "\n"
+     << "Publish data under the specified prefix.\n"
+     << "Note: this tool expects data from the standard input.\n"
+     << "\n"
+     << desc;
+}
+
+static int
+main(int argc, char* argv[])
+{
+  std::string programName = argv[0];
+  std::string prefix;
+  std::string signingStr;
+  Producer::Options opts;
+
+  po::options_description visibleDesc("Options");
+  visibleDesc.add_options()
+    ("help,h",          "print this help message and exit")
+    ("freshness,f",     po::value<time::milliseconds::rep>()->default_value(opts.freshnessPeriod.count()),
+                        "FreshnessPeriod of the published Data packets, in milliseconds")
+    ("print-data-version,p", po::bool_switch(&opts.wantShowVersion),
+                             "print Data version to the standard output")
+    ("size,s",          po::value<size_t>(&opts.maxSegmentSize)->default_value(opts.maxSegmentSize),
+                        "maximum chunk size, in bytes")
+    ("signing-info,S",  po::value<std::string>(&signingStr), "signing information")
+    ("quiet,q",         po::bool_switch(&opts.isQuiet), "turn off all non-error output")
+    ("verbose,v",       po::bool_switch(&opts.isVerbose), "turn on verbose output (per Interest information)")
+    ("version,V",       "print program version and exit")
+    ;
+
+  po::options_description hiddenDesc;
+  hiddenDesc.add_options()
+    ("ndn-name,n", po::value<std::string>(&prefix), "NDN name for the served content");
+
+  po::positional_options_description p;
+  p.add("ndn-name", -1);
+
+  po::options_description optDesc;
+  optDesc.add(visibleDesc).add(hiddenDesc);
+
+  po::variables_map vm;
+  try {
+    po::store(po::command_line_parser(argc, argv).options(optDesc).positional(p).run(), vm);
+    po::notify(vm);
+  }
+  catch (const po::error& e) {
+    std::cerr << "ERROR: " << e.what() << std::endl;
+    return 2;
+  }
+  catch (const boost::bad_any_cast& e) {
+    std::cerr << "ERROR: " << e.what() << std::endl;
+    return 2;
+  }
+
+  if (vm.count("help") > 0) {
+    usage(std::cout, programName, visibleDesc);
+    return 0;
+  }
+
+  if (vm.count("version") > 0) {
+    std::cout << "ndnputchunks " << tools::VERSION << std::endl;
+    return 0;
+  }
+
+  if (prefix.empty()) {
+    usage(std::cerr, programName, visibleDesc);
+    return 2;
+  }
+
+  opts.freshnessPeriod = time::milliseconds(vm["freshness"].as<time::milliseconds::rep>());
+  if (opts.freshnessPeriod < time::milliseconds::zero()) {
+    std::cerr << "ERROR: FreshnessPeriod cannot be negative" << std::endl;
+    return 2;
+  }
+
+  if (opts.maxSegmentSize < 1 || opts.maxSegmentSize > MAX_NDN_PACKET_SIZE) {
+    std::cerr << "ERROR: Maximum chunk size must be between 1 and " << MAX_NDN_PACKET_SIZE << std::endl;
+    return 2;
+  }
+
+  try {
+    opts.signingInfo = security::SigningInfo(signingStr);
+  }
+  catch (const std::invalid_argument& e) {
+    std::cerr << "ERROR: " << e.what() << std::endl;
+    return 2;
+  }
+
+  if (opts.isQuiet && opts.isVerbose) {
+    std::cerr << "ERROR: Cannot be quiet and verbose at the same time" << std::endl;
+    return 2;
+  }
+
+  try {
+    Face face;
+    KeyChain keyChain;
+    Producer producer(prefix, face, keyChain, std::cin, opts);
+    producer.run();
+  }
+  catch (const std::exception& e) {
+    std::cerr << "ERROR: " << e.what() << std::endl;
+    return 1;
+  }
+
+  return 0;
+}
+
+} // namespace chunks
+} // namespace ndn
+
+int
+main(int argc, char* argv[])
+{
+  return ndn::chunks::main(argc, argv);
+}