Version.java

/**
 * Copyright 2012 Andrew Okin
 * 
 * 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 forkk.multimc.data;

public class Version
{
	public static final Version currentVersion = new Version(0, 1, 3);
	
	public Version(int major, int minor, int revision)
	{
		this.major = major;
		this.minor = minor;
		this.revision = revision;
	}
	
	public int major;
	
	public int minor;
	
	public int revision;
	
	@Override
	public String toString()
	{
		return String.format("%1$s.%2$s.%3$s", major, minor, revision);
	}
	
	public int compareTo(Version other)
	{
		if (major != other.major)
			return (int) Math.copySign(1, other.major - major);
		else if (minor != other.minor)
			return (int) Math.copySign(1, other.minor - minor);
		else if (revision != other.revision)
			return (int) Math.copySign(1, other.revision - revision);
		else
			return 0;
	}
	
	public static Version parseString(String str)
	{
		try
		{
			int major = Integer.parseInt(str.substring(0, str.indexOf('.')));
			str = str.substring(str.indexOf('.') + 1);
			int minor = Integer.parseInt(str.substring(0, str.indexOf('.')));
			str = str.substring(str.indexOf('.') + 1);
			int revision = Integer.parseInt(str);
			return new Version(major, minor, revision);
		} catch (Exception e)
		{
			e.printStackTrace();
			return null;
		}
	}
}