1 files changed, 102 insertions, 0 deletions
diff --git a/libjava/gnu/gcj/runtime/BootClassLoader.java b/libjava/gnu/gcj/runtime/BootClassLoader.java
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+++ b/libjava/gnu/gcj/runtime/BootClassLoader.java
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+/* Copyright (C) 2005  Free Software Foundation
+
+   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.  */
+
+package gnu.gcj.runtime;
+
+import java.io.File;
+import java.io.FilenameFilter;
+import java.io.IOException;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.util.Enumeration;
+import java.util.HashSet;
+import java.util.StringTokenizer;
+
+/**
+ * This is a helper for the bootstrap class loader.  It is a
+ * URLClassLoader so that we can read a class path and re-use all the
+ * existing code for finding classes, extracting them from jars, etc.
+ * However, it is never called the way that an ordinary ClassLoader is
+ * called.  For instance, loadClass() is never used.
+ */
+public final class BootClassLoader extends URLClassLoader
+{
+  BootClassLoader(String libdir)
+  {
+    super(new URL[0]);
+
+    // Add the contents of the endorsed directories.
+    StringTokenizer st
+      = new StringTokenizer (System.getProperty ("java.endorsed.dirs", ""),
+			     File.pathSeparator);
+    try
+      {
+	while (st.hasMoreElements ())
+	  {
+	    String dirname = st.nextToken ();
+	    File dir = new File (dirname);
+            if (dir.exists ())
+	      {
+		if (! dirname.endsWith (File.separator))
+		  dirname = dirname + File.separator;
+		String files[] = dir.list (new FilenameFilter ()
+		  {
+		    public boolean accept (File dir, String name)
+		    {
+		      return name.endsWith (".jar") || name.endsWith (".zip");
+		    }
+		  });
+		for (int i = files.length - 1; i >= 0; i--)
+		  addURL(new URL("file", "", -1, dirname + files[i]));
+	      }
+	  }
+
+	String w3clib = (libdir + File.separator
+			 + System.mapLibraryName ("w3c-gcj"));
+	addURL(new URL("gcjlib", "", -1, w3clib));
+	String saxlib = (libdir + File.separator
+			 + System.mapLibraryName ("sax-gcj"));
+	addURL(new URL("gcjlib", "", -1, saxlib));
+      }
+    catch (java.net.MalformedURLException x)
+      {
+	// This should never happen.
+	throw new RuntimeException(x);
+      }
+  }
+
+  public Class bootLoadClass(String name)
+    throws ClassNotFoundException
+  {
+    Class c = findLoadedClass(name);
+    if (c == null)
+      {
+	try
+	  {
+	    // We could hack URLClassLoader to make this more
+	    // efficient, if it mattered.
+	    c = findClass(name);
+	  }
+	catch (ClassNotFoundException _)
+	  {
+	    c = null;
+	  }
+      }
+    return c;
+  }
+
+  public URL bootGetResource(String name)
+  {
+    return findResource(name);
+  }
+
+  public Enumeration bootGetResources(String name) throws IOException
+  {
+    return findResources(name);
+  }
+}