From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- libjava/classpath/java/net/JarURLConnection.java | 229 +++++++++++++++++++++++ 1 file changed, 229 insertions(+) create mode 100644 libjava/classpath/java/net/JarURLConnection.java (limited to 'libjava/classpath/java/net/JarURLConnection.java') diff --git a/libjava/classpath/java/net/JarURLConnection.java b/libjava/classpath/java/net/JarURLConnection.java new file mode 100644 index 000000000..0ffd1afac --- /dev/null +++ b/libjava/classpath/java/net/JarURLConnection.java @@ -0,0 +1,229 @@ +/* JarURLConnection.java -- Class for manipulating remote jar files + Copyright (C) 1998, 2002, 2003, 2005 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.net; + +import java.io.IOException; +import java.security.cert.Certificate; +import java.util.jar.Attributes; +import java.util.jar.JarEntry; +import java.util.jar.JarFile; +import java.util.jar.Manifest; + + +/** + * This abstract class represents a common superclass for implementations + * of jar URL's. A jar URL is a special type of URL that allows JAR + * files on remote systems to be accessed. It has the form: + *

+ * jar:<standard URL pointing to jar filei>!/file/within/jarfile + *

for example: + *

+ * jar:http://www.urbanophile.com/java/foo.jar!/com/urbanophile/bar.class + *

+ * That example URL points to the file /com/urbanophile/bar.class in the + * remote JAR file http://www.urbanophile.com/java/foo.jar. The HTTP + * protocol is used only as an example. Any supported remote protocol + * can be used. + *

+ * This class currently works by retrieving the entire jar file into a + * local cache file, then performing standard jar operations on it. + * (At least this is true for the default protocol implementation). + * + * @author Aaron M. Renn (arenn@urbanophile.com) + * @author Kresten Krab Thorup (krab@gnu.org) + * @date Aug 10, 1999. + * + * @since 1.2 + */ +public abstract class JarURLConnection extends URLConnection +{ + /** + * This is the actual URL that points the remote jar file. This is parsed + * out of the jar URL by the constructor. + */ + private final URL jarFileURL; + + /** + * The connection to the jar file itself. A JarURLConnection + * can represent an entry in a jar file or an entire jar file. In + * either case this describes just the jar file itself. + */ + protected URLConnection jarFileURLConnection; + + /** + * This is the jar file "entry name" or portion after the "!/" in the + * URL which represents the pathname inside the actual jar file. + */ + private final String entryName; + + /** + * Creates a JarURLConnection from an URL object + * + * @param url The URL object for this connection. + * + * @exception MalformedURLException If url is invalid + * + * @specnote This constructor is protected since JDK 1.4 + */ + protected JarURLConnection(URL url) throws MalformedURLException + { + super(url); + + if (! url.getProtocol().equals("jar")) + throw new MalformedURLException(url + ": Not jar protocol."); + + String spec = url.getFile(); + int bang = spec.indexOf("!/"); + if (bang == -1) + throw new MalformedURLException(url + ": No `!/' in spec."); + + // Extract the url for the jar itself. + jarFileURL = new URL(spec.substring(0, bang)); + + // Get the name of the entry, if any. + entryName = spec.length() == (bang + 2) ? null : spec.substring(bang + 2); + } + + /** + * This method returns the "real" URL where the JarFile is located. + * //****Is this right?***** + * + * @return The remote URL + */ + public URL getJarFileURL() + { + return jarFileURL; + } + + /** + * Returns the "entry name" portion of the jar URL. This is the portion + * after the "!/" in the jar URL that represents the pathname inside the + * actual jar file. + * + * @return The entry name. + */ + public String getEntryName() + { + return entryName; + } + + /** + * Returns the entry in this jar file specified by the URL. + * + * @return The jar entry + * + * @exception IOException If an error occurs + */ + public JarEntry getJarEntry() throws IOException + { + if (entryName == null) + return null; + JarFile jarFile = getJarFile(); + return jarFile != null ? jarFile.getJarEntry(entryName) : null; + } + + /** + * Returns a read-only JarFile object for the remote jar file + * + * @return The JarFile object + * + * @exception IOException If an error occurs + */ + public abstract JarFile getJarFile() throws IOException; + + /** + * Returns an array of Certificate objects for the jar file entry specified + * by this URL or null if there are none + * + * @return A Certificate array + * + * @exception IOException If an error occurs + */ + public Certificate[] getCertificates() throws IOException + { + JarEntry entry = getJarEntry(); + + return entry != null ? entry.getCertificates() : null; + } + + /** + * Returns the main Attributes for the jar file specified in the URL or + * null if there are none + * + * @return The main Attributes for the JAR file for this connection + * + * @exception IOException If an error occurs + */ + public Attributes getMainAttributes() throws IOException + { + Manifest manifest = getManifest(); + + return manifest != null ? manifest.getMainAttributes() : null; + } + + /** + * Returns the Attributes for the Jar entry specified by the URL or null + * if none + * + * @return The Attributes object for this connection if the URL for it points + * to a JAR file entry, null otherwise + * + * @exception IOException If an error occurs + */ + public Attributes getAttributes() throws IOException + { + JarEntry entry = getJarEntry(); + + return entry != null ? entry.getAttributes() : null; + } + + /** + * Returns a Manifest object for this jar file, or null if there is no + * manifest. + * + * @return The Manifest for this connection, or null if none + * + * @exception IOException If an error occurs + */ + public Manifest getManifest() throws IOException + { + JarFile file = getJarFile(); + + return file != null ? file.getManifest() : null; + } +} -- cgit v1.2.3