1 files changed, 47 insertions, 0 deletions
diff --git a/libs/utils/WordPressUtils/src/main/java/org/wordpress/android/util/helpers/Version.java b/libs/utils/WordPressUtils/src/main/java/org/wordpress/android/util/helpers/Version.java
new file mode 100644
index 000000000..b35f84757
--- /dev/null
+++ b/libs/utils/WordPressUtils/src/main/java/org/wordpress/android/util/helpers/Version.java
@@ -0,0 +1,47 @@
+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;
+    }
+}