001/**
002 *
003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
004 *
005 * This library is free software; you can redistribute it and/or
006 * modify it under the terms of the GNU Lesser General Public
007 * License as published by the Free Software Foundation; either 
008 * version 2.1 of the License, or (at your option) any later version.
009 * 
010 * This library is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
013 * Lesser General Public License for more details.
014 * 
015 * You should have received a copy of the GNU Lesser General Public 
016 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
017 * 
018 **/
019package lucee.runtime.functions.string;
020
021import lucee.runtime.PageContext;
022import lucee.runtime.exp.FunctionException;
023import lucee.runtime.exp.PageException;
024import lucee.runtime.functions.BIF;
025import lucee.runtime.op.Caster;
026
027/**
028 * implements the member method String.startWith(prefix, ignoreCase)
029 */
030public class StringStartsWith extends BIF {
031
032        public static boolean call(PageContext pc, String input, String subs, boolean ignoreCase) {
033
034                if (ignoreCase)
035                        return input.regionMatches(true, 0, subs, 0, subs.length());
036
037                return input.startsWith(subs);
038        }
039
040        public static boolean call(PageContext pc, String input, String subs) {
041
042                return call(pc, input, subs, false);
043        }
044
045        @Override
046        public Object invoke(PageContext pc, Object[] args) throws PageException {
047
048                if (args.length < 2 || args.length > 3)
049                        throw new FunctionException(pc, "startsWith", 2, 3, args.length);
050
051                return call(pc, Caster.toString(args[0]), Caster.toString(args[1]), args.length == 3 ? Caster.toBoolean(args[2]) : false);
052        }
053}