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.transformer.cfml.evaluator.impl; 020 021import lucee.runtime.config.Config; 022import lucee.runtime.exp.TemplateException; 023import lucee.transformer.bytecode.statement.tag.Tag; 024import lucee.transformer.bytecode.util.ASMUtil; 025import lucee.transformer.cfml.Data; 026import lucee.transformer.cfml.evaluator.EvaluatorSupport; 027import lucee.transformer.library.function.FunctionLib; 028import lucee.transformer.library.tag.TagLib; 029import lucee.transformer.library.tag.TagLibTag; 030 031public final class PageEncoding extends EvaluatorSupport { 032 033 public TagLib execute(Config config, Tag tag, TagLibTag libTag, FunctionLib[] flibs, Data data) throws TemplateException { 034 035 // encoding 036 String encoding=ASMUtil.getAttributeString(tag, "charset",null); 037 if(encoding==null) 038 throw new TemplateException(data.cfml,"attribute [pageencoding] of the tag [processingdirective] must be a constant value"); 039 040 if(encoding.equalsIgnoreCase(data.cfml.getCharset()) || "UTF-8".equalsIgnoreCase(data.cfml.getCharset())) { 041 encoding=null; 042 } 043 044 // 045 046 if(encoding!=null){ 047 throw new ProcessingDirectiveException(data.cfml,encoding,null,data.cfml.getWriteLog()); 048 } 049 050 051 return null; 052 } 053}