1 files changed, 117 insertions, 0 deletions
diff --git a/libjava/java/lang/VMClassLoader.java b/libjava/java/lang/VMClassLoader.java
new file mode 100644
index 0000000..026f6d8
--- /dev/null
+++ b/libjava/java/lang/VMClassLoader.java
@@ -0,0 +1,117 @@
+/* Copyright (C) 1999  Cygnus Solutions
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
+details.  */
+
+/* Author: Kresten Krab Thorup <krab@gnu.org>  */
+
+package java.lang;
+
+import java.io.*;
+import java.net.URL;
+import gnu.gcj.util.path.SearchPath;
+
+final class VMClassLoader extends java.lang.ClassLoader
+{
+  private SearchPath   path;
+  private final String path_seperator;
+  private final String file_seperator;
+  private final char   file_seperator_char;
+    
+  private VMClassLoader () {	
+    path_seperator = System.getProperty ("path.separator", ":");
+    file_seperator = System.getProperty ("file.separator", "/");
+
+    file_seperator_char = file_seperator.charAt (0);
+
+    String class_path = System.getProperty ("java.class.path", ".");
+    path = new SearchPath (class_path);
+  }
+
+  protected Class loadClass(String name,
+			    boolean resolve) 
+    throws java.lang.ClassNotFoundException, java.lang.LinkageError
+  {
+    return loadClassInternal (name, resolve, false);
+  }
+	
+    /** I'm a little in doubt here, if this method is 
+	actually supposed to throw a LinkageError, or not.  
+	The spec, 20.14.3, is a little unclear.  It says:
+
+	`` The general contract of loadClass is that, given the name
+	of a class, it either returns the Class object for the class
+	or throws a ClassNotFoundException.''
+
+	However, by making LinkageError a checked exception, 
+	i.e., mention it directly in the throws clause,
+	we'll force caller to consider that case as well.
+    **/
+
+  protected Class loadClassInternal(String name,
+				    boolean resolve, 
+				    boolean fromBootLoader) 
+    throws java.lang.ClassNotFoundException, java.lang.LinkageError
+  {
+    Class clazz;
+
+    /** TODO: call _Jv_VerifyClassName **/
+    if (   (name.indexOf ('/') != -1)
+	   || (name.charAt (0) == '.')
+	   || (name.indexOf (file_seperator) != -1)
+	   || (name.indexOf ("..") != -1))
+	{
+	    throw new IllegalArgumentException (name);
+	}
+
+    // already loaded?
+    clazz = findLoadedClass (name);
+
+    // we need access to the boot class loader here
+    if (clazz == null && !fromBootLoader)
+      clazz = findBootClass (name);
+
+    if (clazz == null)
+      {
+	StringBuffer res = new StringBuffer ();
+
+	// here we do actually replace .'s with /'s because
+	// we're going to find something in the file system.
+	res.append (name.replace ('.', file_seperator_char));
+	res.append (".class");
+		
+	byte[] data = getResourceAsBytes (res.toString ());
+
+	if (data == null)
+	  throw new ClassNotFoundException (name);
+
+	clazz = defineClass (name, data, 0, data.length);
+	    
+      }
+
+    if (resolve && clazz != null)
+      resolveClass (clazz);
+
+    return clazz;
+  }
+
+  private native Class findBootClass (String name);
+
+  public InputStream getResourceAsStream(String name) 
+  {
+    return path.getStream (name);
+  }
+
+  public URL getResource(String name) 
+  {
+    return path.getURL (name);
+  }
+
+  public byte[] getResourceAsBytes(String name) 
+  {
+    return path.getBytes (name);
+  }
+}