Initial revision

From-SVN: r102074

libjava/classpath/java/util/jar/JarOutputStream.java

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+/* JarOutputStream.java - OutputStream for writing jar 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 java.io.IOException;
+import java.io.OutputStream;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipOutputStream;
+
+/**
+ * OutputStream for writing jar files.
+ * A special ZipOutputStream that can take JarEntries and can have a optional
+ * Manifest as first entry.
+ *
+ * @author Mark Wielaard (mark@klomp.org)
+ */
+
+public class JarOutputStream extends ZipOutputStream
+{
+  // Constructors
+
+  /**
+   * Creates a new JarOutputStream without a manifest entry.
+   *
+   * @param out the stream to create the new jar on
+   * @exception IOException if something unexpected happend
+   */
+  public JarOutputStream(OutputStream out) throws IOException
+  {
+    this(out, null);
+  }
+
+  /**
+   * Creates a new JarOutputStream with a manifest entry.
+   * The manifest will be the first entry in the jar.
+   *
+   * @param out the stream to create the new jar on
+   * @param man the manifest that should be put in the jar file or null
+   * for no manifest entry
+   * @exception IOException if something unexpected happend
+   */
+  public JarOutputStream(OutputStream out, Manifest man) throws IOException
+  {
+    super(out);
+    if (man != null)
+      writeManifest(man);
+  }
+
+  // Methods
+
+  /**
+   * Writes the manifest to a new JarEntry in this JarOutputStream with as
+   * name JarFile.MANIFEST_NAME.
+   *
+   * @param manifest the non null manifest to be written
+   * @exception IOException if something unexpected happend
+   */
+  private void writeManifest(Manifest manifest) throws IOException
+  {
+    // Create a new Jar Entry for the Manifest
+    JarEntry entry = new JarEntry(JarFile.MANIFEST_NAME);
+    putNextEntry(entry);
+    manifest.write(this);
+    closeEntry();
+  }
+
+  /**
+   * Prepares the JarOutputStream for writing the next entry. 
+   * This implementation just calls <code>super.putNextEntre()</code>.
+   *
+   * @param entry The information for the next entry
+   * @exception IOException when some unexpected I/O exception occurred
+   */
+  public void putNextEntry(ZipEntry entry) throws IOException
+  {
+    super.putNextEntry(entry);	// XXX
+  }
+}