+++ /dev/null
-/* Copyright (C) 1999, 2000 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 java.net;
-
-import java.io.*;
-import java.util.jar.*;
-import java.util.Enumeration;
-import java.util.Vector;
-
-public class URLClassLoader extends ClassLoader
-{
- // The URLStreamHandlerFactory
- URLStreamHandlerFactory factory = null;
-
- // `path' contains simply the URL's we're using for the searching.
- private Vector path;
-
- // If path[n] is a zip/jar, then this holds a JarURLConnection for
- // that thing, otherwise, path[n] is null.
- private Vector info;
-
- private URLStreamHandler getHandler0 (String protocol)
- {
- if (factory != null)
- return factory.createURLStreamHandler(protocol);
- else
- return null;
- }
-
- public URLClassLoader (URL[] urls)
- {
- this (urls, null, null);
- }
-
- public URLClassLoader (URL[] urls, ClassLoader parent)
- {
- this (urls, parent, null);
- }
-
- // A File URL may actually be a Jar URL. Convert if possible.
- private URL jarFileize (URL url)
- {
- if (! url.getProtocol ().equals ("jar"))
- {
- String f = url.getFile ();
-
- // If it ends with '/' we'll take it for a directory,
- // otherwise it's a jar file. This is how JDK 1.2 defines
- // it, so we will not try to be smart here.
- if (f.charAt (f.length ()-1) != '/')
- {
- try
- {
- url = new URL ("jar", "", -1, (url.toExternalForm ())+"!/",
- getHandler0 ("jar"));
- }
- catch (MalformedURLException x)
- {
- /* ignore */
- }
- }
- }
- return url;
- }
-
- protected void addURL (URL url)
- {
- JarURLConnection conn = null;
-
- // Convert a Jar File URL into Jar URL if possible.
- url = jarFileize (url);
-
- path.addElement (url);
-
- if (url.getProtocol ().equals ("jar"))
- {
- try
- {
- conn = (JarURLConnection) url.openConnection ();
- }
- catch (java.io.IOException x)
- {
- /* ignore */
- }
- }
-
- info.addElement (conn);
- }
-
- public URLClassLoader (URL[] urls, ClassLoader parent,
- URLStreamHandlerFactory fac)
- {
- super (parent);
-
- factory = fac;
-
- if (urls == null || urls.length == 0)
- {
- path = new Vector (1);
- info = new Vector (1);
- return;
- }
-
- path = new Vector (urls.length);
- info = new Vector (urls.length);
-
- for (int i = 0; i < urls.length; i++)
- {
- // Convert a Jar File URL into a Jar URL is possible.
- URL u = jarFileize(urls[i]);
-
- path.addElement (u);
-
- if (u.getProtocol ().equals ("jar"))
- {
- JarURLConnection conn = null;
- try
- {
- conn = (JarURLConnection) u.openConnection ();
- }
- catch (java.io.IOException x)
- {
- /* ignore */
- }
- info.addElement (conn);
- }
- else
- {
- info.addElement (null);
- }
- }
- }
-
- public URL[] getURLs ()
- {
- URL[] urls = new URL[path.size()];
- path.copyInto (urls);
- return urls;
- }
-
- public Enumeration findResources (String name)
- {
- Vector results = new Vector ();
-
- for (int i = 0; i < path.size(); i++)
- {
- URL u = (URL)path.elementAt (i);
-
- try {
- JarURLConnection conn = (JarURLConnection) info.elementAt (i);
-
- if (conn != null)
- {
- if (conn.getJarFile().getJarEntry (name) != null)
- results.addElement (new URL(u, name, getHandler0 (u.getProtocol())));
- }
- else
- {
- URL p = new URL (u, name, getHandler0 (u.getProtocol()));
-
- InputStream is = p.openStream();
- if (is != null)
- {
- is.close();
- results.addElement (p);
- }
- }
-
- // if we get an exception ... try the next path element
- } catch (IOException x) {
- continue;
- }
- }
-
- return results.elements ();
- }
-
- public URL findResource (String name)
- {
- for (int i = 0; i < path.size(); i++)
- {
- URL u = (URL)path.elementAt (i);
-
- try {
- JarURLConnection conn = (JarURLConnection) info.elementAt (i);
-
- if (conn != null)
- {
- if (conn.getJarFile().getJarEntry (name) != null)
- return new URL(u, name, getHandler0 (u.getProtocol()));
- }
- else
- {
- URL p = new URL (u, name, getHandler0 (u.getProtocol()));
-
- InputStream is = p.openStream();
- if (is != null)
- {
- is.close();
- return p;
- }
- }
-
- // if we get an exception ... try the next path element
- } catch (IOException x) {
- continue;
- }
- }
-
- return null;
- }
-
- // and finally, we can implement our class loader functionality.
- protected Class findClass (String name)
- throws ClassNotFoundException
- {
- if (name == null)
- throw new ClassNotFoundException ("null");
-
- try
- {
- URL u = getResource (name.replace ('.', '/') + ".class");
-
- if (u == null)
- throw new ClassNotFoundException (name);
-
- URLConnection connection = u.openConnection ();
- InputStream is = connection.getInputStream ();
-
- int len = connection.getContentLength ();
- byte[] data = new byte[len];
-
- int left = len;
- int off = 0;
- while (left > 0)
- {
- int c = is.read (data, off, len-off);
- if (c == -1 || c == 0)
- throw new InternalError ("premature end of file");
- left -= c;
- off += c;
- }
-
- return defineClass (name, data, 0, len);
- }
- catch (java.io.IOException x)
- {
- throw new ClassNotFoundException(name);
- }
- }
-}
-
projects / msp430-gcc.git / blobdiff