gov/nasa/worldwind/util/JOGLVersionInfo.java

   1 /*
   2 Copyright (C) 2001, 2006 United States Government
   3 as represented by the Administrator of the
   4 National Aeronautics and Space Administration.
   5 All Rights Reserved.
   6 */
   7 package gov.nasa.worldwind.util;
   8
   9 /**
  10  * @version $Id: JOGLVersionInfo.java 2422 2007-07-25 23:07:49Z tgaskins $
  11  * <p/>
  12  * This program returns the version and implementation information for the Java Bindings for OpenGL (R)
  13  * implementation found in the CLASSPATH.  This information is also found in the manifest for jogl.jar, and this
  14  * program uses the java.lang.Package class to retrieve it programatically.
  15  */
  16
  17 public class JOGLVersionInfo
  18 {
  19     private static JOGLVersionInfo svi = new JOGLVersionInfo();
  20     private Package p;
  21
  22     private JOGLVersionInfo()
  23     {
  24         ClassLoader classLoader = getClass().getClassLoader();
  25         this.p = pkgInfo(classLoader, "javax.media.opengl", "GL");
  26     }
  27
  28     private static Package pkgInfo(ClassLoader classLoader, String pkgName, String className)
  29     {
  30         Package p = null;
  31
  32         try
  33         {
  34             classLoader.loadClass(pkgName + "." + className);
  35
  36             // TODO: message logging
  37             p = Package.getPackage(pkgName);
  38             if (p == null)
  39                 System.out.println("WARNING: Package.getPackage(" + pkgName +") is null");
  40         }
  41         catch (ClassNotFoundException e)
  42         {
  43             System.out.println("Unable to load " + pkgName);
  44         }
  45
  46         return p;
  47     }
  48
  49     public static Package getPackage()
  50     {
  51         return svi.p;
  52     }
  53
  54     public static boolean isCompatibleWith(String version)
  55     {
  56         return svi.p != null && svi.p.isCompatibleWith(version);
  57     }
  58
  59     public static String getSpecificationTitle()
  60     {
  61         return svi.p != null ? svi.p.getSpecificationTitle() : null;
  62     }
  63
  64     public static String getSpecificationVendor()
  65     {
  66         return svi.p != null ? svi.p.getSpecificationVendor() : null;
  67     }
  68
  69     public static String getSpecificationVersion()
  70     {
  71         return svi.p != null ? svi.p.getSpecificationVersion() : null;
  72     }
  73
  74     public static String getImplementationTitle()
  75     {
  76         return svi.p != null ? svi.p.getImplementationTitle() : null;
  77     }
  78
  79     public static String getImplementationVersion()
  80     {
  81         return svi.p != null ? svi.p.getImplementationVersion() : null;
  82     }
  83
  84     public static void main(String[] args)
  85     {
  86         System.out.println(JOGLVersionInfo.getPackage());
  87         System.out.println(JOGLVersionInfo.getSpecificationTitle());
  88         System.out.println(JOGLVersionInfo.getSpecificationVendor());
  89         System.out.println(JOGLVersionInfo.getSpecificationVersion());
  90         System.out.println(JOGLVersionInfo.getImplementationTitle());
  91         System.out.println(JOGLVersionInfo.getImplementationVersion());
  92         System.out.println(JOGLVersionInfo.isCompatibleWith("1.0"));
  93         System.out.println(JOGLVersionInfo.isCompatibleWith("1.1.1"));
  94         System.out.println(JOGLVersionInfo.isCompatibleWith("1.2.1"));
  95         System.out.println(JOGLVersionInfo.getImplementationVersion().compareToIgnoreCase("1.1.1-pre-20070511-02:12:11"));
  96         System.out.println(JOGLVersionInfo.getImplementationVersion().compareToIgnoreCase("1.1.1-pre-20070512-02:12:11"));
  97         System.out.println(JOGLVersionInfo.getImplementationVersion().compareToIgnoreCase("1.1.1"));
  98     }
  99 }