package environ;

import com.darwinsys.lang.GetOpt;

/** Trivial demonstration of GetOpt, the old way. If -h present, print help.
 * @author Ian F. Darwin, http://www.darwinsys.com/
 * @version $Id: GetOptSimple.java,v 1.5 2004/09/08 20:12:55 ian Exp $
 */
public class GetOptSimple {
	public static void main(String[] args) {
		GetOpt go = new GetOpt("h");
		char c;
		while ((c = go.getopt(args)) != 0) {
			switch(c) {
			case 'h':
				helpAndExit(0);
				break;
			default:
				System.err.println("Unknown option in " +
					args[go.getOptInd()-1]);
				helpAndExit(1);
			}
		}
		System.out.println();
	}

	/** Stub for providing help on usage
	 * You can write a longer help than this, certainly.
	 */
	static void helpAndExit(int returnValue) {
		System.err.println("This would tell you how to use this program");
		System.exit(returnValue);
	}
}