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.conversion; 020 021import lucee.commons.lang.StringUtil; 022import lucee.runtime.PageContext; 023import lucee.runtime.exp.PageException; 024import lucee.runtime.interpreter.JSONExpressionInterpreter; 025import lucee.runtime.op.Caster; 026 027public class IsJSON { 028 public static boolean call(PageContext pc, Object obj) { 029 String str=Caster.toString(obj,null); 030 if(StringUtil.isEmpty(str,true)) return false; 031 try { 032 new JSONExpressionInterpreter().interpret(pc, str); 033 return true; 034 } catch (PageException e) { 035 return false; 036 } 037 } 038 039}