Method parseOptions

src/main/java/wycc/util/OptArg.java:302–341

Parse options from the list of arguments, removing those which are recognised. Anything which is not recognised is left as is. @param args --- the list of argument strings. This is modified by removing those which are processed. @param options --- the list of OptArg

(List<String> args, OptArg... options)

	 *         encountered (that is, a token starting with '-')..
	 */
	public static Map<String,Object> parseOptions(List<String> args, OptArg... options) {
		HashMap<String,Object> result = new HashMap<>();
		HashMap<String,OptArg> soptmap = new HashMap<>();
		HashMap<String,OptArg> loptmap = new HashMap<>();

		for(OptArg opt : options) {
			if(opt.defaultValue != null) {
				result.put(opt.option, opt.defaultValue);
			}
			loptmap.put(opt.option, opt);
			soptmap.put(opt.shortForm, opt);
		}

		Iterator<String> iter = args.iterator();
		while(iter.hasNext()) {
			String arg = iter.next();
			OptArg opt;
			String param;
			if (arg.startsWith("--")) {
				Object[] p = parseLongForm(arg, iter, loptmap);
				opt = (OptArg) p[0];
				param = (String) p[1];
			} else if(arg.startsWith("-")) {
				Object[] p = parseShortForm(arg, iter, soptmap);
				opt = (OptArg) p[0];
				param = (String) p[1];
			} else {
				continue;
			}
			// Process option
			Kind k = opt.argument;
			if (k != null) {
				k.process(opt.option, param, result);
			} else {
				result.put(opt.option, null);
			}
		}

		return result;
	}

	private static Object[] parseLongForm(String arg, Iterator<String> iter, Map<String, OptArg> opts) {
		arg = arg.substring(2,arg.length());