e825ca7ff5
* gnu/gcj/protocol/jar/Connection.java (getJarFile): download and cache remote jar files. * gnu/gcj/runtime/VMClassLoader.java: Don't construct jar URL, only add File.separator to URL when it is a directory. * java/lang/ClassLoader.java: Add Classpath javadoc. (parent): final. (getParent): Add (disabled) security check. (findLibrary): New default method. * java/net/JarURLConnection.java (getManifest): Implement. (getInputStream): Only create InputStream when entry exists. (getHeaders): Only use jarFileURLConnection or JarEntry to set length when they exist. * java/net/URLClassLoader.java: New/Rewritten version from Classpath. From-SVN: r59949
94 lines
2.3 KiB
Java
94 lines
2.3 KiB
Java
/* Copyright (C) 1999, 2002 Free Software Foundation
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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package gnu.gcj.protocol.jar;
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import java.net.URL;
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import java.net.URLConnection;
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import java.net.JarURLConnection;
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import java.net.URLStreamHandler;
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import java.net.MalformedURLException;
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import java.net.ProtocolException;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.util.jar.JarFile;
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import java.util.zip.ZipFile;
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import java.util.Hashtable;
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/**
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* Written using on-line Java Platform 1.2 API Specification.
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*
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* @author Kresten Krab Thorup <krab@gnu.org>
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* @date Aug 10, 1999.
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*/
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public class Connection extends JarURLConnection
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{
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static Hashtable file_cache = new Hashtable();
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private JarFile jarfile;
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public Connection(URL url)
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throws MalformedURLException
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{
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super(url);
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}
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public synchronized JarFile getJarFile() throws java.io.IOException
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{
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if (!connected)
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connect();
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if (! doInput)
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throw new ProtocolException("Can't open JarFile if doInput is false");
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if (jarfile != null)
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return jarfile;
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URL jarFileURL = getJarFileURL ();
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if (jarFileURL.getProtocol ().equals ("file")
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&& jarFileURL.getHost ().equals (""))
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{
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if (getUseCaches())
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{
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jarfile = (JarFile) file_cache.get(jarFileURL);
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if (jarfile == null)
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{
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jarfile = new JarFile (jarFileURL.getFile ());
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file_cache.put (jarFileURL, jarfile);
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}
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}
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else
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jarfile = new JarFile (jarFileURL.getFile ());
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}
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else
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{
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URLConnection urlconn = jarFileURL.openConnection();
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InputStream is = urlconn.getInputStream();
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byte[] buf = new byte[4*1024];
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File f = File.createTempFile("cache", "jar");
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FileOutputStream fos = new FileOutputStream(f);
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int len = 0;
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while((len = is.read(buf)) != -1)
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fos.write(buf, 0, len);
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fos.close();
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// Always verify the Manifest, open read only and delete when done.
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// XXX ZipFile.OPEN_DELETE not yet implemented.
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// jf = new JarFile(f, true, ZipFile.OPEN_READ | ZipFile.OPEN_DELETE);
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jarfile = new JarFile(f, true, ZipFile.OPEN_READ);
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}
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return jarfile;
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}
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}
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