/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000-2001 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. 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.optional;

import org.apache.tools.ant.Task;
import org.apache.tools.ant.types.Path;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.taskdefs.Property;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.DirectoryScanner;
import org.apache.tools.ant.types.FileSet;

import java.io.File;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.io.BufferedWriter;
import java.io.IOException;
import java.util.Vector;
import java.util.Iterator;

/**
 *
 *
 *
 * @author <a href="mailto:martin.gee@icsynergy.com">Martin Gee</a>
 */
public class ConfigureTask extends Task {

	/**
	 * @param target
	 */
	public void setTarget(File target) {
		_target = target;
	}

	/**
	 * @param prompt
	 */
	public void setPrompt(boolean prompt) {
		_prompt = prompt;
	}

	/**
	 * @return PathProperty
	 */
	public PathProperty createPathProperty() {
		PathProperty p = (PathProperty) project.createTask("pathproperty");
		_properties.addElement(p);
		return p;
	}

	/**
	 * @return Property
	 */
	public Property createProperty() {
		Property p = (Property) project.createTask("property");
		p.setUserProperty(true);
		_properties.addElement(p);
		return p;
	}

	/**
	 * @exception BuildException
	 */
	public void execute() throws BuildException
	{
		if (_target == null || _target.isDirectory()) {
			throw new BuildException("Target " + 
											 _target.getPath() + " is not valid");
		}

		try {
			PrintWriter out
			= new PrintWriter(new BufferedWriter(new FileWriter(_target)));

			Iterator iter = _properties.iterator();
			while (iter.hasNext()) {
				Object obj = iter.next();

				if (obj instanceof Property) {
					processProperty(out, (Property) obj);
				} else if (obj instanceof PathProperty) {
					processPathProperty(out, (PathProperty) obj);
				}
			}

			out.flush();
			out.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 *
 	 * @param out
	 * @param property
	 * @exception IOException
	 */
	protected void processPathProperty(PrintWriter out, PathProperty property)
		throws IOException
	{
		StringBuffer buffer = new StringBuffer(256);
		buffer.append(property.getName());
		buffer.append("=");

		Path path = property.getPath();
		if (path != null) {
			buffer.append(translate(path.toString()));
		} else {
			buffer.append(translate(property.getValue().toString()));
		}
		out.println(buffer.toString());
	}

	/**
	 *
	 * @param path
	 * @return String
	 */
	public String translate(String path) {
		if (System.getProperty("os.name").equals("Windows NT")) {
			StringBuffer sbPath = new StringBuffer(path.toString());
			StringBuffer sbTransPath = new StringBuffer(sbPath.length()*2);

			for (int i = 0; i < sbPath.length(); i++) {
				if (sbPath.charAt(i) == '\\') {
					sbTransPath.append("\\\\");
					continue;
				}
				sbTransPath.append(sbPath.charAt(i));
			}
			return sbTransPath.toString();
		} else {
			return path;
		}
	}

	/**
	 *
	 * @param out
	 * @param property
	 * @exception IOException
	 */
	protected void processProperty(PrintWriter out, Property property)
		throws IOException
	{
		String name = property.getName();
		String value = property.getValue();
		out.println(name+"="+value);
	}

	// Build
	private File _target;
	private boolean _prompt;
	private Vector _properties = new Vector();
}