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.decision; 020 021import java.io.StringReader; 022 023import lucee.runtime.PageContext; 024import lucee.runtime.ext.function.Function; 025import lucee.runtime.op.Caster; 026import lucee.runtime.text.xml.XMLUtil; 027 028import org.w3c.dom.Node; 029import org.xml.sax.InputSource; 030 031/** 032 * Check if a String is a well-formed XML 033 */ 034public final class IsXML implements Function { 035 036 public static boolean call(PageContext pc, Object xml) { 037 if(xml instanceof Node) return true; 038 039 try { 040 XMLUtil.parse(new InputSource(new StringReader(Caster.toString(xml))),null,false); 041 return true; 042 } 043 catch(Exception e) { 044 return false; 045 } 046 } 047}