/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 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. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:  
 *       "This product includes software developed by the 
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written 
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

package org.apache.tools.ant.taskdefs;

import org.apache.tools.ant.*;
import org.apache.tools.ant.types.ZipFileSet;

import java.io.*;
import java.util.Vector;
import java.util.zip.*;

/**
 * Creates a WAR archive.
 * 
 * @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a> 
 */
public class War extends Jar {

    private File deploymentDescriptor;
    private boolean descriptorAdded;    

    public War() {
        super();
        archiveType = "war";
        emptyBehavior = "create";
    }

    public void setWarfile(File warFile) {
        super.setZipfile(warFile);
    }
    
    public void setWebxml(File descr) {
        deploymentDescriptor = descr; 
        if (!deploymentDescriptor.exists())
            throw new BuildException("Deployment descriptor: " + deploymentDescriptor + " does not exist.");

        // Create a ZipFileSet for this file, and pass it up.
        ZipFileSet fs = new ZipFileSet();
        fs.setDir(new File(deploymentDescriptor.getParent()));
        fs.setIncludes(deploymentDescriptor.getName());
        fs.setFullpath("WEB-INF/web.xml");
        super.addFileset(fs);
    }

    public void addLib(ZipFileSet fs) {
        // We just set the prefix for this fileset, and pass it up.
        fs.setPrefix("WEB-INF/lib/");
        super.addFileset(fs);
    }

    public void addClasses(ZipFileSet fs) {
        // We just set the prefix for this fileset, and pass it up.
        fs.setPrefix("WEB-INF/classes/");
        super.addFileset(fs);
    }

    public void addWebinf(ZipFileSet fs) {
        // We just set the prefix for this fileset, and pass it up.
        fs.setPrefix("WEB-INF/");
        super.addFileset(fs);
    }

    protected void initZipOutputStream(ZipOutputStream zOut)
        throws IOException, BuildException
    {
        // If no webxml file is specified, it's an error.
        if (deploymentDescriptor == null) {
            throw new BuildException("webxml attribute is required", location);
        }
        
        super.initZipOutputStream(zOut);
    }

    protected void zipFile(File file, ZipOutputStream zOut, String vPath)
        throws IOException
    {
        // If the file being added is WEB-INF/web.xml, we warn if it's not the
        // one specified in the "webxml" attribute - or if it's being added twice, 
        // meaning the same file is specified by the "webxml" attribute and in
        // a <fileset> element.
        if (vPath.equalsIgnoreCase("WEB-INF/web.xml"))  {
            if (deploymentDescriptor == null || !deploymentDescriptor.equals(file) || descriptorAdded) {
                log("Warning: selected "+archiveType+" files include a WEB-INF/web.xml which will be ignored " +
                    "(please use webxml attribute to "+archiveType+" task)", Project.MSG_WARN);
            } else {
                super.zipFile(file, zOut, vPath);
                descriptorAdded = true;
            }
        } else {
            super.zipFile(file, zOut, vPath);
        }
    }

    /**
     * Make sure we don't think we already have a web.xml next time this task
     * gets executed.
     */
    protected void cleanUp() {
        descriptorAdded = false;
        super.cleanUp();
    }
}