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/*
 * Copyright (c) 2004 Ant-Contrib project.  All rights reserved.
 *
 * 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 net.sf.antcontrib;

/**
 * @author Dean Hiller
 *
 * To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Generation - Code and Comments
 */
public class AntContribVersion {

	private Package thePackage;
	
	/**
	 * The main program for MockVersion that prints the version info from 
	 * the manifest file.
	 * 
	 * @param args Ignores all arguments.
	 */
	public static void main(String[] args) {
		AntContribVersion version = new AntContribVersion(AntContribVersion.class);
		System.out.println(""+version);
	}
	
	/**
	 * Constructor that takes a class to get the version information
	 * from out of the manifest.  Uses the class's package to retrieve
	 * the manifest version info.
	 * @param c The Class on whose package to use to get version info.
	 */
	public AntContribVersion(Class c) {
		String name = c.getName();
		int index = name.lastIndexOf(".");
		
		if(index < 0)
			throw new RuntimeException("This class is the default package and can't be to use this feature");
		
		String packageName = name.substring(0, index);
		thePackage = Package.getPackage(packageName);
	}
	
	
	/**
	 * Prints the version info the MockVersion represents.
	 * 
	 * @see java.lang.Object#toString()
	 */
	public String toString() {
		String version = "\nVersion of Ant Contrib...";
		version += "\ntitle="+thePackage.getImplementationTitle();
		version += "\nwebsite="+thePackage.getImplementationVendor();
		version += "\nversion="+thePackage.getImplementationVersion()+"\n";

		return version;
	}
}