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-/* Manifest.java -- Reads, writes and manipulates jar manifest files
- Copyright (C) 2000, 2004 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.util.jar;
-
-import gnu.java.util.jar.JarUtils;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.util.Hashtable;
-import java.util.Map;
-
-/**
- * Reads, writes and manipulaties jar manifest files.
- * XXX
- *
- * @since 1.2
- * @author Mark Wielaard (mark@klomp.org)
- */
-public class Manifest implements Cloneable
-{
- // Fields
-
- /** The main attributes of the manifest (jar file). */
- private final Attributes mainAttr;
-
- /** A map of atrributes for all entries described in this Manifest. */
- private final Map<String, Attributes> entries;
-
- // Constructors
-
- /**
- * Creates a new empty Manifest.
- */
- public Manifest()
- {
- mainAttr = new Attributes();
- entries = new Hashtable<String, Attributes>();
- }
-
- /**
- * Creates a Manifest from the supplied input stream.
- *
- * @see #read(InputStream)
- * @see #write(OutputStream)
- *
- * @param in the input stream to read the manifest from
- * @exception IOException when an i/o exception occurs or the input stream
- * does not describe a valid manifest
- */
- public Manifest(InputStream in) throws IOException
- {
- this();
- read(in);
- }
-
- /**
- * Creates a Manifest from another Manifest.
- * Makes a deep copy of the main attributes, but a shallow copy of
- * the other entries. This means that you can freely add, change or remove
- * the main attributes or the entries of the new manifest without effecting
- * the original manifest, but adding, changing or removing attributes from
- * a particular entry also changes the attributes of that entry in the
- * original manifest.
- *
- * @see #clone()
- * @param man the Manifest to copy from
- */
- public Manifest(Manifest man)
- {
- mainAttr = new Attributes(man.getMainAttributes());
- entries = new Hashtable<String, Attributes>(man.getEntries());
- }
-
- // Methods
-
- /**
- * Gets the main attributes of this Manifest.
- */
- public Attributes getMainAttributes()
- {
- return mainAttr;
- }
-
- /**
- * Gets a map of entry Strings to Attributes for all the entries described
- * in this manifest. Adding, changing or removing from this entries map
- * changes the entries of this manifest.
- */
- public Map<String, Attributes> getEntries()
- {
- return entries;
- }
-
- /**
- * Returns the Attributes associated with the Entry.
- * <p>
- * Implemented as:
- * <code>return (Attributes)getEntries().get(entryName)</code>
- *
- * @param entryName the name of the entry to look up
- * @return the attributes associated with the entry or null when none
- */
- public Attributes getAttributes(String entryName)
- {
- return getEntries().get(entryName);
- }
-
- /**
- * Clears the main attributes and removes all the entries from the
- * manifest.
- */
- public void clear()
- {
- mainAttr.clear();
- entries.clear();
- }
-
- /**
- * Read and merge a <code>Manifest</code> from the designated input stream.
- *
- * @param in the input stream to read from.
- * @throws IOException if an I/O related exception occurs during the process.
- */
- public void read(InputStream in) throws IOException
- {
- JarUtils.readMFManifest(getMainAttributes(), getEntries(), in);
- }
-
- /**
- * Writes the contents of this <code>Manifest</code> to the designated
- * output stream. Line-endings are platform-independent and consist of the
- * 2-codepoint sequence <code>0x0D</code> and <code>0x0A</code>.
- *
- * @param out the output stream to write this <code>Manifest</code> to.
- * @throws IOException if an I/O related exception occurs during the process.
- */
- public void write(OutputStream out) throws IOException
- {
- JarUtils.writeMFManifest(getMainAttributes(), getEntries(), out);
- }
-
- /**
- * Makes a deep copy of the main attributes, but a shallow copy of
- * the other entries. This means that you can freely add, change or remove
- * the main attributes or the entries of the new manifest without effecting
- * the original manifest, but adding, changing or removing attributes from
- * a particular entry also changes the attributes of that entry in the
- * original manifest. Calls <CODE>new Manifest(this)</CODE>.
- */
- public Object clone()
- {
- return new Manifest(this);
- }
-
- /**
- * Checks if another object is equal to this Manifest object.
- * Another Object is equal to this Manifest object if it is an instance of
- * Manifest and the main attributes and the entries of the other manifest
- * are equal to this one.
- */
- public boolean equals(Object o)
- {
- return (o instanceof Manifest) &&
- (mainAttr.equals(((Manifest) o).mainAttr)) &&
- (entries.equals(((Manifest) o).entries));
- }
-
- /**
- * Calculates the hash code of the manifest. Implemented by a xor of the
- * hash code of the main attributes with the hash code of the entries map.
- */
- public int hashCode()
- {
- return mainAttr.hashCode() ^ entries.hashCode();
- }
-
-}