filter ';' LIST ';' REGEX

public String _filter(String args[]) {
	return filter(args, false);
}

public String _filterout(String args[]) {
	return filter(args, true);

}

static String	_filterHelp	= "${ % s;<list>;<regex>}";

String filter(String[] args, boolean include) {
	verifyCommand(args, String.format(_filterHelp, args[0]), null, 3, 3);

	Collection<String> list = new ArrayList<String>(Processor.split(args[1]));
	Pattern pattern = Pattern.compile(args[2]);

	for (Iterator<String> i = list.iterator(); i.hasNext();) {
		if (pattern.matcher(i.next()).matches() == include)
			i.remove();
	}
	return Processor.join(list);
}