Add generic VersionNumber util class

1 files changed, 92 insertions, 0 deletions

diff --git a/src/java/com/jogamp/common/util/VersionNumber.java b/src/java/com/jogamp/common/util/VersionNumber.java
new file mode 100644
index 0000000..8c997e6
--- /dev/null
+++ b/src/java/com/jogamp/common/util/VersionNumber.java
@@ -0,0 +1,92 @@
+/**
+ * Copyright 2010 JogAmp Community. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS 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 JogAmp Community OR
+ * 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.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+
+package com.jogamp.common.util;
+
+public class VersionNumber implements Comparable {
+
+    protected int major;
+    protected int minor;
+    protected int sub;
+
+    public VersionNumber(int majorRev, int minorRev, int subMinorRev) {
+        major = majorRev;
+        minor = minorRev;
+        sub = subMinorRev;
+    }
+
+    protected VersionNumber() { }
+
+    public final int hashCode() {
+        // 31 * x == (x << 5) - x
+        int hash = 31 + major;
+        hash = ((hash << 5) - hash) + minor;
+        return ((hash << 5) - hash) + sub;
+    }
+
+    public final boolean equals(Object o) {
+        return 0 == compareTo(o);
+    }
+    
+    public final int compareTo(Object o) {
+        if( ! ( o instanceof VersionNumber ) ) {
+            return -1;
+        }
+        VersionNumber vo = (VersionNumber) o;
+        if (major > vo.major) {
+            return 1;
+        } else if (major < vo.major) {
+            return -1;
+        } else if (minor > vo.minor) {
+            return 1;
+        } else if (minor < vo.minor) {
+            return -1;
+        } else if (sub > vo.sub) {
+            return 1;
+        } else if (sub < vo.sub) {
+            return -1;
+        }
+        return 0; // they are equal
+    }
+
+    public final int getMajor() {
+        return major;
+    }
+
+    public final int getMinor() {
+        return minor;
+    }
+
+    public final int getSub() {
+        return sub;
+    }
+
+    public String toString() {
+        return major + "." + minor + "." + sub ;
+    }
+}