1 /*
   2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.javafx.util;
  27 
  28 import java.io.InputStream;
  29 import java.lang.reflect.InvocationTargetException;
  30 import java.lang.reflect.Method;
  31 import java.security.AccessController;
  32 import java.security.PrivilegedAction;
  33 
  34 // FIXME: JIGSAW -- remove this class when no longer used
  35 public class ModuleHelper {
  36     private static final Method getModuleMethod;
  37     private static final Method getResourceAsStreamMethod;
  38 
  39     private static final boolean verbose;
  40 
  41     static {
  42         verbose = AccessController.doPrivileged((PrivilegedAction<Boolean>) () ->
  43                 Boolean.getBoolean("javafx.verbose"));
  44 
  45         if (verbose) {
  46             System.err.println("" + ModuleHelper.class.getName() + " : <clinit>");
  47         }
  48         Method mGetModule = null;
  49         Method mGetResourceAsStream = null;
  50         try {
  51             mGetModule = Class.class.getMethod("getModule");
  52             Class<?> moduleClass = mGetModule.getReturnType();
  53             mGetResourceAsStream = moduleClass.getMethod("getResourceAsStream", String.class);
  54         } catch (NoSuchMethodException e) {
  55             // ignore
  56         }
  57         getModuleMethod = mGetModule;
  58         getResourceAsStreamMethod = mGetResourceAsStream;
  59         if (verbose) {
  60             System.err.println("getModuleMethod = " + getModuleMethod);
  61             System.err.println("getResourceAsStreamMethod = " + getResourceAsStreamMethod);
  62         }
  63     }
  64 
  65     public static Object getModule(Class clazz) {
  66         if (getModuleMethod != null) {
  67             try {
  68                 return getModuleMethod.invoke(clazz);
  69             } catch (IllegalAccessException | InvocationTargetException ex) {
  70                 throw new RuntimeException(ex);
  71             }
  72         }
  73         return null;
  74     }
  75 
  76     public static InputStream getResourceAsStream(Object thisModule, String name) {
  77         if (getResourceAsStreamMethod != null) {
  78             try {
  79                 return (InputStream)getResourceAsStreamMethod.invoke(thisModule, name);
  80             } catch (IllegalAccessException | InvocationTargetException ex) {
  81                 throw new RuntimeException(ex);
  82             }
  83         }
  84         return null;
  85     }
  86 }