ServiceMainOptions.h

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/*
 * Copyright 2006-2008 Savarese Software Research Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.savarese.com/software/ApacheLicense-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef __SSRC_WISP_UTILITY_SERVICE_MAIN_OPTIONS_H
#define __SSRC_WISP_UTILITY_SERVICE_MAIN_OPTIONS_H

#include <ssrc/wisp/utility/BasicServiceOptions.h>

#include <fstream>

__BEGIN_NS_SSRC_WISP_UTILITY

class ServiceMainOptions : public BasicServiceOptions {
  boost::program_options::options_description _custom_description;

protected:

  ServiceMainOptions() :
    BasicServiceOptions(), _custom_description("Wisp Service"),
    wisp_version(false)
  {
    using namespace boost::program_options;

    _custom_description.add_options()
      ("config,f", value<std::vector<std::string> >()->composing(),
       "Specify a configuration file from which to read additional options.")
      ("wisp-version",
       "Print Wisp version with which the service was compiled.");

    description.add(_custom_description);
  }

  virtual void notify(boost::program_options::variables_map & vm) {
    namespace po = boost::program_options;

    if(vm.count("config") > 0) {
      std::vector<std::string> config =
        vm.find("config")->second.as<std::vector<std::string> >();

      for(std::vector<std::string>::iterator file = config.begin(); file != config.end(); ++file) {
        std::ifstream ifs(file->c_str());

        if(ifs.is_open())
          po::store(po::parse_config_file(ifs, description), vm);
        else
          throw std::invalid_argument(*file);
      }
    }

    BasicServiceOptions::notify(vm);
    wisp_version = (vm.count("wisp-version") > 0);
  }

public:
  bool wisp_version;

  virtual ~ServiceMainOptions() { }
};

__END_NS_SSRC_WISP_UTILITY

#endif