Java tutorial
/* * $Header: /home/cvs/jakarta-tomcat-catalina/catalina/src/share/org/apache/catalina/startup/SetDocBaseRule.java,v 1.10 2004/01/11 10:05:35 remm Exp $ * $Revision: 1.10 $ * $Date: 2004/01/11 10:05:35 $ * * ==================================================================== * * The Apache Software License, Version 1.1 * * Copyright (c) 1999-2001 The Apache Software Foundation. All rights * reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. 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For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. * */ package org.apache.catalina.startup; import java.io.File; import java.lang.reflect.Method; import java.net.URL; import org.apache.catalina.Context; import org.apache.catalina.Deployer; import org.apache.catalina.Host; import org.apache.catalina.core.StandardHost; import org.apache.commons.digester.Digester; import org.apache.commons.digester.Rule; import org.xml.sax.Attributes; /** * <p>Rule that modifies the docBase of the host, setting it appropriately, * before adding the Context to the parent Host.</p> * * @author Remy Maucherat */ public class SetDocBaseRule extends Rule { // ----------------------------------------------------------- Constructors /** * Construct a new instance of this Rule. * * @param digester Digester we are associated with */ public SetDocBaseRule(Digester digester) { super(digester); } // ----------------------------------------------------- Instance Variables // --------------------------------------------------------- Public Methods /** * Handle the beginning of an XML element. * * @param attributes The attributes of this element * * @exception Exception if a processing error occurs */ public void begin(Attributes attributes) throws Exception { Context child = (Context) digester.peek(0); Deployer parent = (Deployer) digester.peek(1); Host host = null; if (!(parent instanceof StandardHost)) { Method method = parent.getClass().getMethod("getHost", null); host = (Host) method.invoke(parent, null); } else { host = (Host) parent; } String appBase = host.getAppBase(); boolean unpackWARs = true; if (host instanceof StandardHost) { unpackWARs = ((StandardHost) host).isUnpackWARs(); } if (!unpackWARs && !("true".equals(attributes.getValue("unpackWAR")))) { return; } if ("false".equals(attributes.getValue("unpackWAR"))) { return; } File canonicalAppBase = new File(appBase); if (canonicalAppBase.isAbsolute()) { canonicalAppBase = canonicalAppBase.getCanonicalFile(); } else { canonicalAppBase = new File(System.getProperty("catalina.base"), appBase).getCanonicalFile(); } String docBase = child.getDocBase(); if (docBase == null) { // Trying to guess the docBase according to the path String path = child.getPath(); if (path == null) { return; } if (path.equals("")) { docBase = "ROOT"; } else { if (path.startsWith("/")) { docBase = path.substring(1); } else { docBase = path; } } } File file = new File(docBase); if (!file.isAbsolute()) { docBase = (new File(canonicalAppBase, docBase)).getPath(); } else { docBase = file.getCanonicalPath(); } if (docBase.toLowerCase().endsWith(".war")) { URL war = new URL("jar:" + (new File(docBase)).toURL() + "!/"); String contextPath = child.getPath(); if (contextPath.equals("")) { contextPath = "ROOT"; } docBase = ExpandWar.expand(host, war, contextPath); file = new File(docBase); docBase = file.getCanonicalPath(); } else { File docDir = new File(docBase); if (!docDir.exists()) { File warFile = new File(docBase + ".war"); if (warFile.exists()) { URL war = new URL("jar:" + warFile.toURL() + "!/"); docBase = ExpandWar.expand(host, war, child.getPath()); file = new File(docBase); docBase = file.getCanonicalPath(); } } } if (docBase.startsWith(canonicalAppBase.getPath())) { docBase = docBase.substring(canonicalAppBase.getPath().length()); docBase = docBase.replace(File.separatorChar, '/'); if (docBase.startsWith("/")) { docBase = docBase.substring(1); } } else { docBase = docBase.replace(File.separatorChar, '/'); } child.setDocBase(docBase); } }