| package org.wordpress.android.util.helpers; |
| |
| //See: http://stackoverflow.com/a/11024200 |
| public class Version implements Comparable<Version> { |
| private String version; |
| |
| public final String get() { |
| return this.version; |
| } |
| |
| public Version(String version) { |
| if(version == null) |
| throw new IllegalArgumentException("Version can not be null"); |
| if(!version.matches("[0-9]+(\\.[0-9]+)*")) |
| throw new IllegalArgumentException("Invalid version format"); |
| this.version = version; |
| } |
| |
| @Override public int compareTo(Version that) { |
| if(that == null) |
| return 1; |
| String[] thisParts = this.get().split("\\."); |
| String[] thatParts = that.get().split("\\."); |
| int length = Math.max(thisParts.length, thatParts.length); |
| for(int i = 0; i < length; i++) { |
| int thisPart = i < thisParts.length ? |
| Integer.parseInt(thisParts[i]) : 0; |
| int thatPart = i < thatParts.length ? |
| Integer.parseInt(thatParts[i]) : 0; |
| if(thisPart < thatPart) |
| return -1; |
| if(thisPart > thatPart) |
| return 1; |
| } |
| return 0; |
| } |
| |
| @Override public boolean equals(Object that) { |
| if(this == that) |
| return true; |
| if(that == null) |
| return false; |
| if(this.getClass() != that.getClass()) |
| return false; |
| return this.compareTo((Version) that) == 0; |
| } |
| } |