/* Copyright (C) 2000 Daniel Heck
   dheck@ix.urz.uni-heidelberg.de */
#include <iostream>
#include <string>
#include <list>
#include <algorithm>

#include "argp.hh"

enum EOptions {
    OPT_Argument,
    OPT_Help,
    OPT_Version,
    OPT_Verbose,
    OPT_Output,
    OPT_Error
};

int
main(int argc, char *argv[])
{
    argp ap(OPT_Argument, OPT_Error);
	
    ap.def(OPT_Help,	'h', "help");
    ap.def(OPT_Verbose,	'v', "verbose");
    ap.def(OPT_Version,	0,   "version");
    ap.def(OPT_Output,	'o', "output", true);

    ap.feed(argv + 1, argv + argc);

    bool show_help = false;
    bool verbose_flag = false;
    bool show_version = false;
    list<string> ofiles;
    list<string> ifiles;
	
    argp::option opt;
    while (ap.getopt(opt)) {
	switch (opt.id) {
	case OPT_Argument:
	    ifiles.push_back(opt.param);
	    break;
	case OPT_Help: show_help = true; break;
	case OPT_Verbose: verbose_flag = true; break;
	case OPT_Version: show_version = true; break;
	case OPT_Output:
	    ofiles.push_back(opt.param);
	    break;
	case OPT_Error:
	    if (ap.invalidparam())
		cout << "Invalid parameter for option `"
		     << opt.param << "'.\n";
	    else if (ap.ambiguousopt())
		cout << "Ambiguous command line option `"
		     << opt.param << "'.\n";
	    else if (ap.unknownopt())
		cout << "Unknown command line option `"
		     << opt.param << "'.\n";
	    else if (ap.missingparam())
		cout << "Missing parameter for option `"
		     << opt.param << "'.\n";
	    break;
	}
    }

    cout << "show_help : " << show_help << endl;
    cout << "show_version: " << show_version << endl;
    cout << "verbose_flag: " << verbose_flag << endl;
    cout << "output_file: ";
    copy(ofiles.begin(), ofiles.end(), ostream_iterator<string>(cout, " "));
    cout << endl;
    cout << "input files: ";
    copy(ifiles.begin(), ifiles.end(), ostream_iterator<string>(cout, " "));
    cout << endl;
}