/* libopt++/src/tests/simple.cpp
 *
 *  (c)2006, Laurence Withers. Released under the GNU GPL. See file
 *  COPYING for more information / terms of license.
*/

#include "opt"

#include <iostream>



class Opt : private opt::Parser {
public:
    Opt(int argc, const char* const* argv)
        : quiet(false)
    {
        addOption(OptSummary, false, "print-summary", 0, "Displays a one-line summary of usage.");
        addOption(OptHelp, false, "help", 'h', "Displays options and usage.");
        addOption(OptPrint, true, "print", 'p', "Prints a string.");
        addOption(OptPrint, true, "", 'P', "As -p.");
        parse(argc, argv);
    }

    virtual ~Opt() throw() { }

    void displayArgs()
    {
        if(quiet) return;
        std::cout << "\nprogName = " << progName
            << "\nprogPath = " << progPath
            << "\nprogDir  = " << progDir
            << "\n";
        for(uint i = 0, end = args.size(); i != end; ++i) std::cout << "Argument: " << args[i] << "\n";
    }

private:
    enum { OptSummary, OptHelp, OptPrint };
    bool quiet;

    virtual void option(int result, const std::string& opt)
    {
        switch(result) {
        case OptSummary:
            std::cout << "A simple example program with a couple of options.\n";
            quiet = true;
            break;

        case OptHelp:
            std::cout << "Usage:\n\n  "
                << progName << " [options] args\n\n";
            showHelp(std::cout);
            break;

        default:
            std::cerr << "Unrecognised option " << result << " (" << opt <<
                ") -- this is a program bug.\n";
        }
    }

    virtual void option(int result, const std::string& opt, const std::string& arg)
    {
        switch(result) {
        case OptPrint:
            std::cout << opt << ": " << arg << "\n";
            break;

        default:
            std::cerr << "Unrecognised option " << result << " (" << opt << ' ' << arg <<
                ") -- this is a program bug.\n";
        }
    }
};



int main(int argc, char* argv[])
{
    int ret = 0;
    try {
        Opt o(argc, argv);
        o.displayArgs();
    }
    catch(std::exception& e) {
        std::cerr << e.what() << std::endl;
        ret = 1;
    }
    catch(...) {
        std::cerr << "Unknown exception caught." << std::endl;
        ret = 1;
    }

    return ret;
}

/* options for text editors
kate: replace-trailing-space-save true; space-indent true; tab-width 4;
*/