text: 
  //
  // This source file is part of appleseed.
  // Visit http://appleseedhq.net/ for additional information and resources.
  //
  // This software is released under the MIT license.
  //
  // Copyright (c) 2010-2013 Francois Beaune, Jupiter Jazz Limited
  // Copyright (c) 2014-2017 Francois Beaune, The appleseedhq Organization
  //
  // Permission is hereby granted, free of charge, to any person obtaining a copy
  // of this software and associated documentation files (the "Software"), to deal
  // in the Software without restriction, including without limitation the rights
  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  // copies of the Software, and to permit persons to whom the Software is
  // furnished to do so, subject to the following conditions:
  //
  // The above copyright notice and this permission notice shall be included in
  // all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  // THE SOFTWARE.
  //
  
  // Interface header.
  #include "commandlinehandler.h"
  
  // appleseed.shared headers.
  #include "application/superlogger.h"
  
  // appleseed.foundation headers.
  #include "foundation/utility/log.h"
  
  using namespace appleseed::shared;
  using namespace foundation;
  using namespace std;
  
  namespace appleseed {
  namespace projecttool {
  
  CommandLineHandler::CommandLineHandler()
    : CommandLineHandlerBase("projecttool")
  {
      add_default_options();
  
      parser().set_default_option_handler(
          &m_positional_args
              .set_exact_value_count(2));
  
      parser().add_option_handler(
          &m_to_revision
              .add_name("--to-revision")
              .add_name("-r")
              .set_description("update the project to this revision (by default, update to the latest revision)")
              .set_syntax("revision")
              .set_exact_value_count(1));
  }
  
  void CommandLineHandler::print_program_usage(
      const char*     executable_name,
      SuperLogger&    logger) const
  {
      SaveLogFormatterConfig save_config(logger);
      logger.set_verbosity_level(LogMessage::Info);
      logger.set_format(LogMessage::Info, "{message}");
  
      LOG_INFO(logger, "usage: %s <command> [options] project.appleseed", executable_name);
      LOG_INFO(logger, "commands:");
      LOG_INFO(logger, "  update               update a project to a given revision");
      LOG_INFO(logger, "  pack                 pack a project to an *.appleseedz file");
      LOG_INFO(logger, "  unpack               unpack an *.appleseedz file");
      LOG_INFO(logger, "options:");
  
      parser().print_usage(logger);
  }
  
  }   // namespace projecttool
  }   // namespace appleseed
  