| /* |
| * Copyright (c) 1998, 2007, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * Licensed Materials - Property of IBM |
| * RMI-IIOP v1.0 |
| * Copyright IBM Corp. 1998 1999 All Rights Reserved |
| * |
| */ |
| |
| package sun.rmi.rmic.iiop; |
| |
| import java.util.Hashtable; |
| import java.io.File; |
| import java.io.FileInputStream; |
| |
| /** |
| * DirectoryLoader is a simple ClassLoader which loads from a specified |
| * file system directory. |
| * @author Bryan Atsatt |
| */ |
| |
| public class DirectoryLoader extends ClassLoader { |
| |
| private Hashtable cache; |
| private File root; |
| |
| /** |
| * Constructor. |
| */ |
| public DirectoryLoader (File rootDir) { |
| cache = new Hashtable(); |
| if (rootDir == null || !rootDir.isDirectory()) { |
| throw new IllegalArgumentException(); |
| } |
| root = rootDir; |
| } |
| |
| private DirectoryLoader () {} |
| |
| /** |
| * Convenience version of loadClass which sets 'resolve' == true. |
| */ |
| public Class loadClass(String className) throws ClassNotFoundException { |
| return loadClass(className, true); |
| } |
| |
| /** |
| * This is the required version of loadClass which is called |
| * both from loadClass above and from the internal function |
| * FindClassFromClass. |
| */ |
| public synchronized Class loadClass(String className, boolean resolve) |
| throws ClassNotFoundException { |
| Class result; |
| byte classData[]; |
| |
| // Do we already have it in the cache? |
| |
| result = (Class) cache.get(className); |
| |
| if (result == null) { |
| |
| // Nope, can we get if from the system class loader? |
| |
| try { |
| |
| result = super.findSystemClass(className); |
| |
| } catch (ClassNotFoundException e) { |
| |
| // No, so try loading it... |
| |
| classData = getClassFileData(className); |
| |
| if (classData == null) { |
| throw new ClassNotFoundException(); |
| } |
| |
| // Parse the class file data... |
| |
| result = defineClass(classData, 0, classData.length); |
| |
| if (result == null) { |
| throw new ClassFormatError(); |
| } |
| |
| // Resolve it... |
| |
| if (resolve) resolveClass(result); |
| |
| // Add to cache... |
| |
| cache.put(className, result); |
| } |
| } |
| |
| return result; |
| } |
| |
| /** |
| * Reurn a byte array containing the contents of the class file. Returns null |
| * if an exception occurs. |
| */ |
| private byte[] getClassFileData (String className) { |
| |
| byte result[] = null; |
| FileInputStream stream = null; |
| |
| // Get the file... |
| |
| File classFile = new File(root,className.replace('.',File.separatorChar) + ".class"); |
| |
| // Now get the bits... |
| |
| try { |
| stream = new FileInputStream(classFile); |
| result = new byte[stream.available()]; |
| stream.read(result); |
| } catch(ThreadDeath death) { |
| throw death; |
| } catch (Throwable e) { |
| } |
| |
| finally { |
| if (stream != null) { |
| try { |
| stream.close(); |
| } catch(ThreadDeath death) { |
| throw death; |
| } catch (Throwable e) { |
| } |
| } |
| } |
| |
| return result; |
| } |
| } |