Example Documentation

// $Id: example-configfile.cc,v 1.1 2005/07/29 02:55:16 mschatz Exp $
// Demonstrates different techniques for handling configuration files

#include "Foundation.hh"
using namespace std;

// Prints a section from a configuration file
void PrintSection(ConfigSection * section)
{
  string variable;
  string fullName = section->getFullSectionName();

  while ((variable = section->getNextVariable()) != "")
  {
    cout << section->getFullVariableName(variable)
         << "=" << section->getValue(variable) << endl;
  }

  ConfigSection * nextSection;

  while ((nextSection = section->getNextSection()) != NULL)
  {
    PrintSection(nextSection);
  }
}




// Demonstrates configuration file operations
void testConfigFile(ConfigFile *config)
{
  cout << "--------------------------" << endl;
  cout << "Demonstating ConfigFile"    << endl;
  cout << "--------------------------" << endl;

  ConfigSection * section = config->getRootSection();
  PrintSection(section);

  cout << endl;

  string dir = "/tmp/work";
  cout << "dir is now " << dir << endl;

  section = config->findSection("TIGR");
  if (section && section->hasVariable("WORKDIR"))
  {
    dir = section->getValue("WORKDIR");
    cout << "TIGR dir is:" << dir << endl;
  }

  section = config->findSection("NIH");
  if (section && section->hasVariable("WORKDIR"))
  {
    dir = section->getValue("WORKDIR");
    cout << "NIH dir is:" << dir << endl;
  }

  cout << "dir is now " << dir << endl;
}




int main(int argc, char ** argv)
{
  string helptext = "Foundation config file example";
  string version = "Foundation example-configfile 1.0";
  string dependencies = "Foundation";

  try
  {
    Foundation *app = new Foundation (version, 
                                                helptext, 
                                                dependencies,
                                                argc, 
                                                argv);

    // Try to parse options and a config file as necessary
    app->handleStandardOptions();

    // Main Program
    // Since --configfile is a standard option, one can getConfig
    // as soon as handleStandardOptions has been called to see if a configfile
    // was specified on the command line
    
    if (app->getConfig()) testConfigFile(app->getConfig());

    // Delete the Foundation object
    delete app;
  }
  catch (ExitProgramNormally e)
  {
    // non fatal error (help, version, or dependencies were requested)
  }
  catch (Exception e)
  {
    // fatal error
    
    cerr << e << endl;
    exit (100);
  }

  return 0;
}