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.commons.lang3.StringUtils; 022import org.apache.wiki.api.exceptions.ProviderException; 023 024import java.io.IOException; 025 026/** 027 * Includes body, if the request context matches. To understand more about 028 * RequestContexts, please look at the WikiContext class. 029 * 030 * @since 2.0 031 * @see org.apache.wiki.WikiContext 032 */ 033public class CheckRequestContextTag extends WikiTagBase { 034 035 private static final long serialVersionUID = 0L; 036 037 private String m_context; 038 private String[] m_contextList = {}; 039 040 /** 041 * {@inheritDoc} 042 */ 043 @Override 044 public void initTag() { 045 super.initTag(); 046 m_context = null; 047 m_contextList = new String[0]; 048 } 049 050 /** 051 * Returns the context. 052 * 053 * @return Return the context. 054 */ 055 public String getContext() 056 { 057 return m_context; 058 } 059 060 /** 061 * Set the context to check for. 062 * 063 * @param arg One of the RequestsContexts. 064 */ 065 public void setContext( final String arg ) { 066 m_context = arg; 067 m_contextList = StringUtils.split( arg,'|' ); 068 } 069 070 /** 071 * {@inheritDoc} 072 */ 073 @Override 074 public final int doWikiStartTag() throws IOException, ProviderException { 075 for ( final String checkedCtx : m_contextList ) { 076 final String ctx = m_wikiContext.getRequestContext(); 077 if ( !checkedCtx.isEmpty() ) { 078 if ( checkedCtx.charAt( 0 ) == '!' ) { 079 if ( !ctx.equalsIgnoreCase( checkedCtx.substring( 1 ) ) ) { 080 return EVAL_BODY_INCLUDE; 081 } 082 } else if ( ctx.equalsIgnoreCase( checkedCtx ) ) { 083 return EVAL_BODY_INCLUDE; 084 } 085 } 086 } 087 return SKIP_BODY; 088 } 089 090}