1 files changed, 115 insertions, 0 deletions
diff --git a/src/nwi/classes/com/sun/nwi/impl/NativeLibLoaderBase.java b/src/nwi/classes/com/sun/nwi/impl/NativeLibLoaderBase.java
new file mode 100644
index 0000000..9e072fe
--- /dev/null
+++ b/src/nwi/classes/com/sun/nwi/impl/NativeLibLoaderBase.java
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * 
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ * - Redistribution 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.
+ * 
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ * 
+ * This software is provided "AS IS," without a warranty of any kind. ALL
+ * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+ * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
+ * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
+ * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
+ * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
+ * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
+ * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
+ * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
+ * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
+ * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ * 
+ * You acknowledge that this software is not designed or intended for use
+ * in the design, construction, operation or maintenance of any nuclear
+ * facility.
+ * 
+ * Sun gratefully acknowledges that this software was originally authored
+ * and developed by Kenneth Bradley Russell and Christopher John Kline.
+ */
+
+package com.sun.nwi.impl;
+
+// FIXME: refactor Java SE dependencies
+//import java.awt.Toolkit;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.util.HashSet;
+
+public class NativeLibLoaderBase {
+  public interface LoaderAction {
+    /**
+     * Loads the library specified by libname. Optionally preloads the libraries specified by
+     * preload. The implementation should ignore, if the preload-libraries have already been
+     * loaded.
+     * @param libname the library to load
+     * @param preload the libraries to load before loading the main library if not null
+     * @param preloadIgnoreError true, if errors during loading the preload-libraries should be ignored 
+     */
+    void loadLibrary(String libname, String[] preload, 
+        boolean preloadIgnoreError);
+  }
+  
+  private static class DefaultAction implements LoaderAction {
+    public void loadLibrary(String libname, String[] preload,
+        boolean preloadIgnoreError) {
+      if (null!=preload) {
+        for (int i=0; i<preload.length; i++) {
+          try {
+            System.loadLibrary(preload[i]);
+          }
+          catch (UnsatisfiedLinkError e) {
+            if (!preloadIgnoreError && e.getMessage().indexOf("already loaded") < 0) {
+              throw e;
+            }
+          }
+        }
+      }
+      System.loadLibrary(libname);
+    }
+  }
+
+  private static final HashSet loaded = new HashSet();
+  private static LoaderAction loaderAction = new DefaultAction();
+
+  public static void disableLoading() {
+    setLoadingAction(null);
+  }
+
+  public static void enableLoading() {
+    setLoadingAction(new DefaultAction());
+  }
+  
+  public static synchronized void setLoadingAction(LoaderAction action) {
+    loaderAction = action;
+  }
+
+  protected static synchronized void loadLibrary(String libname, String[] preload, 
+      boolean preloadIgnoreError) {
+    if (loaderAction != null && !loaded.contains(libname))
+    {
+      loaderAction.loadLibrary(libname, preload, preloadIgnoreError);    
+      loaded.add(libname);
+    }
+  }
+  
+  public static void loadNWI(final String ossuffix) {
+    AccessController.doPrivileged(new PrivilegedAction() {
+      public Object run() {
+        loadLibrary("nwi_"+ossuffix, null, false);
+        return null;
+      }
+    });
+  }
+}