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SampleApp.cpp

//
// SampleApp.cpp
//
// $Id: //poco/1.2/Util/samples/SampleApp/src/SampleApp.cpp#1 $
//
// This sample demonstrates the Application class.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
// 
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
// 
// 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, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//


#include "Poco/Util/Application.h"
#include "Poco/Util/Option.h"
#include "Poco/Util/OptionSet.h"
#include "Poco/Util/HelpFormatter.h"
#include "Poco/Util/AbstractConfiguration.h"
#include "Poco/AutoPtr.h"
#include <iostream>


using Poco::Util::Application;
using Poco::Util::Option;
using Poco::Util::OptionSet;
using Poco::Util::HelpFormatter;
using Poco::Util::AbstractConfiguration;
using Poco::Util::OptionCallback;
using Poco::AutoPtr;


00053 class SampleApp: public Application
      /// This sample demonstrates some of the features of the Util::Application class,
      /// such as configuration file handling and command line arguments processing.
      ///
      /// Try SampleApp --help (on Unix platforms) or SampleApp /help (elsewhere) for
      /// more information.
{
public:
      SampleApp(): _helpRequested(false)
      {
      }

protected:  
00066       void initialize(Application& self)
      {
            loadConfiguration(); // load default configuration files, if present
            Application::initialize(self);
            // add your own initialization code here
      }
      
00073       void uninitialize()
      {
            // add your own uninitialization code here
            Application::uninitialize();
      }
      
00079       void reinitialize(Application& self)
      {
            Application::reinitialize(self);
            // add your own reinitialization code here
      }
      
00085       void defineOptions(OptionSet& options)
      {
            Application::defineOptions(options);

            options.addOption(
                  Option("help", "h", "display help information on command line arguments")
                        .required(false)
                        .repeatable(false)
                        .callback(OptionCallback<SampleApp>(this, &SampleApp::handleHelp)));

            options.addOption(
                  Option("define", "D", "define a configuration property")
                        .required(false)
                        .repeatable(true)
                        .argument("name=value")
                        .callback(OptionCallback<SampleApp>(this, &SampleApp::handleDefine)));
                        
            options.addOption(
                  Option("config-file", "f", "load configuration data from a file")
                        .required(false)
                        .repeatable(true)
                        .argument("file")
                        .callback(OptionCallback<SampleApp>(this, &SampleApp::handleConfig)));

            options.addOption(
                  Option("bind", "b", "bind option value to test.property")
                        .required(false)
                        .repeatable(false)
                        .argument("value")
                        .binding("test.property"));
      }
      
      void handleHelp(const std::string& name, const std::string& value)
      {
            _helpRequested = true;
            displayHelp();
            stopOptionsProcessing();
      }
      
      void handleDefine(const std::string& name, const std::string& value)
      {
            defineProperty(value);
      }
      
      void handleConfig(const std::string& name, const std::string& value)
      {
            loadConfiguration(value);
      }
            
      void displayHelp()
      {
            HelpFormatter helpFormatter(options());
            helpFormatter.setCommand(commandName());
            helpFormatter.setUsage("OPTIONS");
            helpFormatter.setHeader("A sample application that demonstrates some of the features of the Poco::Util::Application class.");
            helpFormatter.format(std::cout);
      }
      
      void defineProperty(const std::string& def)
      {
            std::string name;
            std::string value;
            std::string::size_type pos = def.find('=');
            if (pos != std::string::npos)
            {
                  name.assign(def, 0, pos);
                  value.assign(def, pos + 1, def.length() - pos);
            }
            else name = def;
            config().setString(name, value);
      }

00157       int main(const std::vector<std::string>& args)
      {
            if (!_helpRequested)
            {
                  logger().information("Arguments to main():");
                  for (std::vector<std::string>::const_iterator it = args.begin(); it != args.end(); ++it)
                  {
                        logger().information(*it);
                  }
                  logger().information("Application properties:");
                  printProperties("");
            }
            return Application::EXIT_OK;
      }
      
      void printProperties(const std::string& base)
      {
            AbstractConfiguration::Keys keys;
            config().keys(base, keys);
            if (keys.empty())
            {
                  if (config().hasProperty(base))
                  {
                        std::string msg;
                        msg.append(base);
                        msg.append(" = ");
                        msg.append(config().getString(base));
                        logger().information(msg);
                  }
            }
            else
            {
                  for (AbstractConfiguration::Keys::const_iterator it = keys.begin(); it != keys.end(); ++it)
                  {
                        std::string fullKey = base;
                        if (!fullKey.empty()) fullKey += '.';
                        fullKey.append(*it);
                        printProperties(fullKey);
                  }
            }
      }
      
private:
      bool _helpRequested;
};


POCO_APP_MAIN(SampleApp)

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