001/* 002 Licensed to the Apache Software Foundation (ASF) under one 003 or more contributor license agreements. See the NOTICE file 004 distributed with this work for additional information 005 regarding copyright ownership. The ASF licenses this file 006 to you under the Apache License, Version 2.0 (the 007 "License"); you may not use this file except in compliance 008 with the License. You may obtain a copy of the License at 009 010 http://www.apache.org/licenses/LICENSE-2.0 011 012 Unless required by applicable law or agreed to in writing, 013 software distributed under the License is distributed on an 014 "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 KIND, either express or implied. See the License for the 016 specific language governing permissions and limitations 017 under the License. 018 */ 019package org.apache.wiki.tags; 020 021import org.apache.log4j.Logger; 022import org.apache.wiki.api.core.Context; 023import org.apache.wiki.render.RenderingManager; 024 025import javax.servlet.jsp.JspException; 026import javax.servlet.jsp.PageContext; 027import javax.servlet.jsp.tagext.BodyContent; 028import javax.servlet.jsp.tagext.BodyTagSupport; 029 030/** 031 * Converts the body text into HTML content. 032 * 033 * @since 2.0 034 */ 035public class TranslateTag 036 extends BodyTagSupport 037{ 038 private static final long serialVersionUID = 0L; 039 040 private static final Logger log = Logger.getLogger( TranslateTag.class ); 041 042 @Override 043 public final int doAfterBody() throws JspException { 044 try { 045 Context context = (Context) pageContext.getAttribute( Context.ATTR_CONTEXT, PageContext.REQUEST_SCOPE ); 046 047 // Because the TranslateTag should not affect any of the real page attributes we have to make a clone here. 048 context = context.deepClone(); 049 050 // Get the page data. 051 final BodyContent bc = getBodyContent(); 052 String wikiText = bc.getString(); 053 bc.clearBody(); 054 055 if( wikiText != null ) { 056 wikiText = wikiText.trim(); 057 final String result = context.getEngine().getManager( RenderingManager.class ).textToHTML( context, wikiText ); 058 getPreviousOut().write( result ); 059 } 060 } catch( final Exception e ) { 061 log.error( "Tag failed", e ); 062 throw new JspException( "Tag failed, check logs: " + e.getMessage() ); 063 } 064 065 return SKIP_BODY; 066 } 067 068}