/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999 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", "Tomcat", 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 java.io.*;
import java.util.*;

/**
 * Call Ant in a sub-project
 *
 *  <pre>
 *    <target name="foo" depends="init">
 *    <ant antfile="build.xml" target="bar" >
 *      <property name="property1" value="aaaaa" />
 *      <property name="foo" value="baz" />
 *     </ant>
 *  </target>
 *
 * <target name="bar" depends="init">
 *    <echo message="prop is ${property1} ${foo}" />
 * </target>
 * </pre>
 *
 *
 * @author costin@dnt.ro
 */
public class Ant extends Task {

    private String dir = null;
    private String antFile = null;
    private String target = null;
    private String output = null;

    Vector properties=new Vector();
    Project p1;
    
    public void init() {
        p1 = new Project(project.getOutput(), project.getOutputLevel());

        // set user-define properties
        Hashtable prop1 = project.getProperties();
        Enumeration e = prop1.keys();
        while (e.hasMoreElements()) {
            String arg = (String) e.nextElement();
            String value = (String) prop1.get(arg);
            p1.setProperty(arg, value);
        }
    }
    
    /**
     * Do the execution.
     */
    public void execute() throws BuildException {
        if( dir==null) dir=".";
	
	if( output != null ) {
	    try {
		PrintStream out=new PrintStream(new FileOutputStream(output));
		p1.setOutput( out );
	    } catch( IOException ex ) {
		project.log( "Ant: Can't set output to " + output );
	    }
	}

	p1.setBasedir(dir);
        p1.setUserProperty("basedir" , dir);

	// Override with local-defined properties
	Enumeration e = properties.elements();
        while (e.hasMoreElements()) {
            Property p=(Property) e.nextElement();
	    //	    System.out.println("Setting " + p.getName()+ " " + p.getValue());
	    p.init();
        }

	if (antFile == null) antFile = dir + "/build.xml";

	p1.setUserProperty( "ant.file" , antFile );
        ProjectHelper.configureProject(p1, new File(antFile));

        if (target == null) {
            target = p1.getDefaultTarget();
        }

        p1.executeTarget(target);
    }

    public void setDir(String d) {
        this.dir = d;
    }

    public void setAntfile(String s) {
        this.antFile = s;
    }

    public void setTarget(String s) {
        this.target = s;
    }

    public void setOutput(String s) {
        this.output = s;
    }

    // XXX replace with createProperty!!
    public Task createProperty() {
	Property p=(Property)p1.createTask("property");
	p.setUserProperty(true);
	properties.addElement( p );
	return p;
    }
}
