diff options
Diffstat (limited to 'libjava/java/net/URLClassLoader.java')
| -rw-r--r-- | libjava/java/net/URLClassLoader.java | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/libjava/java/net/URLClassLoader.java b/libjava/java/net/URLClassLoader.java deleted file mode 100644 index 8e467ad6b80..00000000000 --- a/libjava/java/net/URLClassLoader.java +++ /dev/null @@ -1,221 +0,0 @@ -/* Copyright (C) 1999 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.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); - } - - 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++) - { - URL u = urls[i]; - - // If it is a jar url, then we'll search it as is. - if (! u.getProtocol ().equals ("jar")) - { - String f = u.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 - { - u = new URL ("jar", "", -1, (u.toExternalForm ())+"!/", - getHandler0 ("jar")); - } - catch (MalformedURLException x) - { - /* ignore */ - } - } - } - - path.insertElementAt (u, i); - - if (u.getProtocol ().equals ("jar")) - { - JarURLConnection conn = null; - try - { - conn = (JarURLConnection) u.openConnection (); - } - catch (java.io.IOException x) - { - /* ignore */ - } - info.insertElementAt (conn, i); - } - else - { - info.insertElementAt (null, i); - } - } - } - - public URL getResource (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.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; - } - - /** IN jdk 1.2 this method is not overridden, but we gain performance - by doing so. - */ - - public InputStream getResourceAsStream (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) - { - JarFile file = conn.getJarFile (); - JarEntry ent = file.getJarEntry (name); - if (ent != null) - return file.getInputStream(ent); - } - else - { - InputStream is = new URL(u, name, getHandler0 (u.getProtocol())).openStream(); - if (is != null) - return is; - } - - // 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 - { - InputStream is = getResourceAsStream (name.replace ('.', '/') + ".class"); - - if (is == null) - throw new ClassNotFoundException (name); - - // Here we have to rely on available() to provide the length of - // the class; which might not be exactly right in some cases... - - int len = is.available (); - 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); - } - } - -} - |