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.logging.log4j.LogManager; 022import org.apache.logging.log4j.Logger; 023import org.apache.wiki.api.core.Context; 024import org.apache.wiki.render.RenderingManager; 025 026import javax.servlet.jsp.JspException; 027import javax.servlet.jsp.PageContext; 028import javax.servlet.jsp.tagext.BodyContent; 029import javax.servlet.jsp.tagext.BodyTagSupport; 030 031/** 032 * Converts the body text into HTML content. 033 * 034 * @since 2.0 035 */ 036public class TranslateTag 037 extends BodyTagSupport 038{ 039 private static final long serialVersionUID = 0L; 040 041 private static final Logger LOG = LogManager.getLogger( TranslateTag.class ); 042 043 @Override 044 public final int doAfterBody() throws JspException { 045 try { 046 Context context = (Context) pageContext.getAttribute( Context.ATTR_CONTEXT, PageContext.REQUEST_SCOPE ); 047 048 // Because the TranslateTag should not affect any of the real page attributes we have to make a clone here. 049 context = context.deepClone(); 050 051 // Get the page data. 052 final BodyContent bc = getBodyContent(); 053 String wikiText = bc.getString(); 054 bc.clearBody(); 055 056 if( wikiText != null ) { 057 wikiText = wikiText.trim(); 058 final String result = context.getEngine().getManager( RenderingManager.class ).textToHTML( context, wikiText ); 059 getPreviousOut().write( result ); 060 } 061 } catch( final Exception e ) { 062 LOG.error( "Tag failed", e ); 063 throw new JspException( "Tag failed, check logs: " + e.getMessage() ); 064 } 065 066 return SKIP_BODY; 067 } 068 069}