+++ /dev/null
-/* JarFile.java - Representation of a jar file
- Copyright (C) 2000 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., 59 Temple Place, Suite 330, Boston, MA
-02111-1307 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.util.jar;
-
-import java.util.zip.ZipEntry;
-import java.util.zip.ZipException;
-import java.util.zip.ZipFile;
-import java.io.File;
-import java.io.FileNotFoundException;
-import java.io.InputStream;
-import java.io.IOException;
-import java.util.Enumeration;
-
-/**
- * Representation of a jar file.
- * <p>
- * Note that this class is not a subclass of java.io.File but a subclass of
- * java.util.zip.ZipFile and you can only read JarFiles with it (although
- * there are constructors that take a File object).
- * <p>
- * XXX - verification of Manifest signatures is not yet implemented.
- *
- * @since 1.2
- * @author Mark Wielaard (mark@klomp.org)
- */
-public class JarFile extends ZipFile
-{
- // Fields
-
- /** The name of the manifest entry: META-INF/MANIFEST.MF */
- public static final String MANIFEST_NAME = "META-INF/MANIFEST.MF";
-
- /**
- * The manifest of this file, if any, otherwise null.
- * Read by the constructor.
- */
- private final Manifest manifest;
-
- /** Wether to verify the manifest and all entries */
- private boolean verify;
-
- // Constructors
-
- /**
- * Creates a new JarFile, tries to read the manifest and if the manifest
- * exists verifies it.
- *
- * @param fileName the name of the file to open
- * @exception FileNotFoundException if the fileName cannot be found
- * @exception IOException if another IO exception occurs while reading
- */
- public JarFile(String fileName) throws FileNotFoundException, IOException
- {
- this(fileName, true);
- }
-
- /**
- * Creates a new JarFile, tries to read the manifest and if the manifest
- * exists and verify is true verfies it.
- *
- * @param fileName the name of the file to open
- * @param verify checks manifest and entries when true and a manifest
- * exists, when false no checks are made
- * @exception FileNotFoundException if the fileName cannot be found
- * @exception IOException if another IO exception occurs while reading
- */
- public JarFile(String fileName, boolean verify) throws
- FileNotFoundException, IOException
- {
- super(fileName);
- manifest = readManifest();
- if (verify)
- verify();
- }
-
- /**
- * Creates a new JarFile, tries to read the manifest and if the manifest
- * exists verifies it.
- *
- * @param file the file to open as a jar file
- * @exception FileNotFoundException if the file does not exits
- * @exception IOException if another IO exception occurs while reading
- */
- public JarFile(File file) throws FileNotFoundException, IOException
- {
- this(file, true);
- }
-
- /**
- * Creates a new JarFile, tries to read the manifest and if the manifest
- * exists and verify is true verfies it.
- *
- * @param file the file to open to open as a jar file
- * @param verify checks manifest and entries when true and a manifest
- * exists, when false no checks are made
- * @exception FileNotFoundException if file does not exist
- * @exception IOException if another IO exception occurs while reading
- */
- public JarFile(File file, boolean verify) throws FileNotFoundException,
- IOException
- {
- super(file);
- manifest = readManifest();
- if (verify)
- verify();
- }
-
- /**
- * Creates a new JarFile with the indicated mode, tries to read the
- * manifest and if the manifest exists and verify is true verfies it.
- *
- * @param file the file to open to open as a jar file
- * @param verify checks manifest and entries when true and a manifest
- * exists, when false no checks are made
- * @param mode either ZipFile.OPEN_READ or
- * (ZipFile.OPEN_READ | ZipFile.OPEN_DELETE)
- * @exception FileNotFoundException if the file does not exist
- * @exception IOException if another IO exception occurs while reading
- * @exception IllegalArgumentException when given an illegal mode
- *
- * @since 1.3
- */
- public JarFile(File file, boolean verify, int mode) throws
- FileNotFoundException, IOException, IllegalArgumentException
- {
- super(file, mode);
- manifest = readManifest();
- if (verify)
- verify();
- }
-
- // Methods
-
- /**
- * XXX - should verify the manifest file
- */
- private void verify()
- {
- // only check if manifest is not null
- if (manifest == null)
- {
- verify = false;
- return;
- }
-
- verify = true;
- // XXX - verify manifest
- }
-
- /**
- * Parses and returns the manifest if it exists, otherwise returns null.
- */
- private Manifest readManifest()
- {
- try
- {
- ZipEntry manEntry = super.getEntry(MANIFEST_NAME);
- if (manEntry != null)
- {
- InputStream in = super.getInputStream(manEntry);
- return new Manifest(in);
- }
- else
- {
- return null;
- }
- }
- catch (IOException ioe)
- {
- return null;
- }
- }
-
- /**
- * Returns a enumeration of all the entries in the JarFile.
- * Note that also the Jar META-INF entries are returned.
- *
- * @exception IllegalStateException when the JarFile is already closed
- */
- public Enumeration entries() throws IllegalStateException
- {
- return new JarEnumeration(super.entries());
- }
-
- /**
- * Wraps a given Zip Entries Enumeration. For every zip entry a
- * JarEntry is created and the corresponding Attributes are looked up.
- * XXX - Should also look up the certificates.
- */
- private class JarEnumeration implements Enumeration
- {
-
- private final Enumeration entries;
-
- JarEnumeration(Enumeration e)
- {
- entries = e;
- }
-
- public boolean hasMoreElements()
- {
- return entries.hasMoreElements();
- }
-
- public Object nextElement()
- {
- ZipEntry zip = (ZipEntry) entries.nextElement();
- JarEntry jar = new JarEntry(zip);
- if (manifest != null)
- {
- jar.attr = manifest.getAttributes(jar.getName());
- }
- // XXX jar.certs
- return jar;
- }
- }
-
- /**
- * XXX
- * It actually returns a JarEntry not a zipEntry
- * @param name XXX
- */
- public ZipEntry getEntry(String name)
- {
- ZipEntry entry = super.getEntry(name);
- if (entry != null)
- {
- JarEntry jarEntry = new JarEntry(entry);
- if (manifest != null)
- {
- jarEntry.attr = manifest.getAttributes(name);
- // XXX jarEntry.certs
- }
- return jarEntry;
- }
- return null;
- }
-
- /**
- * XXX should verify the inputstream
- * @param entry XXX
- * @exception ZipException XXX
- * @exception IOException XXX
- */
- public synchronized InputStream getInputStream(ZipEntry entry) throws
- ZipException, IOException
- {
- return super.getInputStream(entry); // XXX verify
- }
-
- /**
- * Returns the JarEntry that belongs to the name if such an entry
- * exists in the JarFile. Returns null otherwise
- * Convenience method that just casts the result from <code>getEntry</code>
- * to a JarEntry.
- *
- * @param name the jar entry name to look up
- * @return the JarEntry if it exists, null otherwise
- */
- public JarEntry getJarEntry(String name)
- {
- return (JarEntry) getEntry(name);
- }
-
- /**
- * Returns the manifest for this JarFile or null when the JarFile does not
- * contain a manifest file.
- */
- public Manifest getManifest()
- {
- return manifest;
- }
-}
projects / msp430-gcc.git / blobdiff