/*
 * Copyright (c) 1995-1997 Sun Microsystems, Inc. All Rights Reserved.
 *
 * Permission to use, copy, modify, and distribute this software
 * and its documentation for NON-COMMERCIAL purposes and without
 * fee is hereby granted provided that this copyright notice
 * appears in all copies. Please refer to the file "copyright.html"
 * for further important copyright and licensing information.
 *
 * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
 * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
 * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
 * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
 * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
 */
class ParseCmdLine {
    public static void main(String[] args) {

        int i = 0, j;
        String arg;
        char flag;
        boolean vflag = false;
        String outputfile = "";

        while (i < args.length && args[i].startsWith("-")) {
            arg = args[i++];

    // use this type of check for "wordy" arguments
            if (arg.equals("-verbose")) {
                System.out.println("verbose mode on");
                vflag = true;
            }

    // use this type of check for arguments that require arguments
            else if (arg.equals("-output")) {
                if (i < args.length)
                    outputfile = args[i++];
                else
                    System.err.println("-output requires a filename");
                if (vflag)
                    System.out.println("output file = " + outputfile);
            }

    // use this type of check for a series of flag arguments
            else {
                for (j = 1; j < arg.length(); j++) {
                    flag = arg.charAt(j);
                    switch (flag) {
                    case 'x':
                        if (vflag) System.out.println("Option x");
                        break;
                    case 'n':
                        if (vflag) System.out.println("Option n");
                        break;
                    default:
                        System.err.println("ParseCmdLine: illegal option " + flag);
                        break;
                    }
                }
            }
        }
        if (i == args.length)
            System.err.println("Usage: ParseCmdLine [-verbose] [-xn] [-output afile] filename");
        else
            System.out.println("Success!");
    }
}