| /* |
| * Copyright 1999-2002,2004 The Apache Software Foundation. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.cocoon.components.modules.input; |
| |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.Vector; |
| |
| import org.apache.avalon.framework.configuration.Configuration; |
| import org.apache.avalon.framework.configuration.ConfigurationException; |
| import org.apache.avalon.framework.thread.ThreadSafe; |
| import org.apache.cocoon.environment.ObjectModelHelper; |
| |
| /** |
| * BaseLinkModule returns a relative link (<code>../</code>, |
| * <code>../../</code> etc) to the base of the current request or sitemap URI. For |
| * instance, if called within a <map:match pattern="a/b/c.xsp"> pipeline, |
| * <code>{baselink:SitemapBaseLink}</code> would evaluate to <code>../../</code>. |
| * |
| * based on RequestURIModule |
| * |
| */ |
| public class BaseLinkModule extends AbstractInputModule implements ThreadSafe { |
| |
| final static Vector returnNames = new Vector() { |
| { |
| add("RequestBaseLink"); |
| add("SitemapBaseLink"); |
| } |
| }; |
| |
| public Object getAttribute( |
| final String name, |
| final Configuration modeConf, |
| final Map objectModel) |
| throws ConfigurationException { |
| |
| String uri; |
| if (name.equals("SitemapBaseLink")) |
| uri = ObjectModelHelper.getRequest(objectModel).getSitemapURI(); |
| else if (name.equals("RequestBaseLink")) |
| uri = ObjectModelHelper.getRequest(objectModel).getRequestURI(); |
| else |
| uri = ""; |
| |
| if (uri.startsWith("/")) { |
| uri = uri.substring(1); |
| } |
| |
| StringBuffer result = new StringBuffer(uri.length()); |
| |
| int nextIndex = 0; |
| while ((nextIndex = uri.indexOf('/', nextIndex) + 1) > 0) { |
| result.append("../"); |
| } |
| |
| if (getLogger().isDebugEnabled()) |
| getLogger().debug("Returns " + result + " for uri " + uri + " and attribute " + name); |
| |
| return result.toString(); |
| } |
| |
| public Iterator getAttributeNames(final Configuration modeConf, final Map objectModel) |
| throws ConfigurationException { |
| |
| return RequestURIModule.returnNames.iterator(); |
| } |
| |
| public Object[] getAttributeValues( |
| final String name, |
| final Configuration modeConf, |
| final Map objectModel) |
| throws ConfigurationException { |
| |
| Object result = new Object[1]; |
| result = getAttribute(name, modeConf, objectModel); |
| return (result == null? null : new Object[]{result}); |
| } |
| |
| } |