| /* |
| * Copyright 1999-2004 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.sitemap; |
| |
| import org.apache.avalon.framework.parameters.Parameters; |
| import org.apache.cocoon.ProcessingException; |
| import org.apache.cocoon.Constants; |
| import org.apache.cocoon.caching.CacheableProcessingComponent; |
| import org.apache.cocoon.environment.SourceResolver; |
| import org.apache.cocoon.transformation.Transformer; |
| import org.apache.cocoon.xml.xlink.ExtendedXLinkPipe; |
| |
| import org.apache.excalibur.source.SourceValidity; |
| |
| import org.xml.sax.Attributes; |
| import org.xml.sax.SAXException; |
| |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * @author <a href="mailto:uv@upaya.co.uk">Upayavira</a> |
| * @version CVS $Id: LinkGatherer.java,v 1.6 2004/03/05 13:02:58 bdelacretaz Exp $ |
| */ |
| public class LinkGatherer extends ExtendedXLinkPipe implements Transformer, CacheableProcessingComponent { |
| private List links; |
| |
| |
| /** |
| * Set the <code>SourceResolver</code>, objectModel <code>Map</code>, |
| * the source and sitemap <code>Parameters</code> used to process the request. |
| */ |
| public void setup(SourceResolver resolver, Map objectModel, String src, Parameters par) throws ProcessingException, |
| SAXException, IOException { |
| this.links = (List)objectModel.get(Constants.LINK_COLLECTION_OBJECT); |
| } |
| |
| /** |
| * Generate the unique key. |
| * This key must be unique inside the space of this component. |
| * |
| * @return The generated key hashes the src |
| */ |
| public java.io.Serializable getKey() { |
| return "1"; |
| } |
| |
| /** |
| * Generate the validity object. |
| * |
| * @return The generated validity object or <code>null</code> if the |
| * component is currently not cacheable. |
| */ |
| public SourceValidity getValidity() { |
| // Whilst the cache does not store gathered links, this component must be non-cacheable |
| // return NOPValidity.SHARED_INSTANCE; |
| return null; |
| } |
| |
| public void simpleLink(String href, String role, String arcrole, String title, String show, String actuate, String uri, |
| String name, String raw, Attributes attr) throws SAXException { |
| if (!this.links.contains(href)){ |
| this.addLink(href); |
| } |
| super.simpleLink(href, role, arcrole, title, show, actuate, uri, name, raw, attr); |
| } |
| |
| public void startLocator(String href, String role, String title, String label, String uri, String name, String raw, |
| Attributes attr) throws SAXException { |
| if (!this.links.contains(href)){ |
| this.addLink(href); |
| } |
| super.startLocator(href, role, title, label, uri, name, raw, attr); |
| } |
| private void addLink(String href) { |
| if (href.length() == 0) return; |
| if (href.charAt(0) == '#') return; |
| if (href.indexOf("://") != -1) return; |
| if (href.startsWith("mailto:")) return; |
| if (href.startsWith("news:")) return; |
| if (href.startsWith("javascript:")) return; |
| |
| int anchorPos = href.indexOf('#'); |
| if (anchorPos == -1) { |
| this.links.add(href); |
| } else { |
| this.links.add(href.substring(0, anchorPos)); |
| } |
| } |
| } |