* All files: Updated copyright to reflect Cygnus purchase.

[pf3gnuchains/gcc-fork.git] / libjava / java / util / zip / Deflater.java

diff --git a/libjava/java/util/zip/Deflater.java b/libjava/java/util/zip/Deflater.java
index 81312e2..d0dbfb6 100644 (file)
--- a/libjava/java/util/zip/Deflater.java
+++ b/libjava/java/util/zip/Deflater.java
@@ -1,4 +1,6 @@
-/* Copyright (C) 1999  Cygnus Solutions
+// Deflater.java - Compress a data stream.
+
+/* Copyright (C) 1999  Red Hat, Inc.
 
    This file is part of libgcj.
 
@@ -8,6 +10,120 @@ details.  */
 
 package java.util.zip;
 
+import gnu.gcj.RawData;
+
+/**
+ * @author Tom Tromey
+ * @date May 17, 1999
+ */
+
+/* Written using on-line Java Platform 1.2 API Specification
+ * and JCL book.
+ * Believed complete and correct.
+ */
+
 public class Deflater
 {
+  public static final int BEST_COMPRESSION = 9;
+  public static final int BEST_SPEED = 1;
+  public static final int DEFAULT_COMPRESSION = -1;
+  public static final int NO_COMPRESSION = 0;
+
+  public static final int DEFAULT_STRATEGY = 0;
+  public static final int FILTERED = 1;
+  public static final int HUFFMAN_ONLY = 2;
+
+  public static final int DEFLATED = 8;
+
+  public int deflate (byte[] buf)
+  {
+    return deflate (buf, 0, buf.length);
+  }
+
+  public native int deflate (byte[] buf, int off, int len);
+  public native void init (int level, boolean noHeader);
+  public native void update ();
+
+  public Deflater ()
+  {
+    this (DEFAULT_COMPRESSION, false);
+  }
+
+  public Deflater (int lvl)
+  {
+    this (lvl, false);
+  }
+
+  public Deflater (int lvl, boolean noHeader)
+  {
+    this.strategy = DEFAULT_STRATEGY;
+    init (lvl, noHeader);
+    setLevel (lvl);
+  }
+
+  public native void end ();
+
+  protected void finalize ()
+  {
+    end ();
+  }
+
+  public native void finish ();
+
+  public synchronized boolean finished ()
+  {
+    return is_finished;
+  }
+
+  public native int getAdler ();
+  public native int getTotalIn ();
+  public native int getTotalOut ();
+  public native boolean needsInput ();
+  public native void reset ();
+
+  public void setDictionary (byte[] buf)
+  {
+    setDictionary (buf, 0, buf.length);
+  }
+
+  public native void setDictionary (byte[] buf, int off, int len);
+
+  public void setInput (byte[] buf)
+  {
+    setInput (buf, 0, buf.length);
+  }
+
+  public native void setInput (byte[] buf, int off, int len);
+
+  public synchronized void setLevel (int lvl)
+  {
+    if (lvl != -1 && (lvl < 0 || lvl > 9))
+      throw new IllegalArgumentException ();
+    level = (lvl == -1) ? 6 : lvl;
+    update ();
+  }
+
+  public synchronized void setStrategy (int stgy)
+  {
+    if (stgy != DEFAULT_STRATEGY && stgy != FILTERED
+       && stgy != HUFFMAN_ONLY)
+      throw new IllegalArgumentException ();
+    strategy = stgy;
+    update ();
+  }
+
+  // Compression level.
+  private int level;
+
+  // Compression strategy.
+  private int strategy;
+
+  // The zlib stream.
+  private RawData zstream;
+
+  // True if finished.
+  private boolean is_finished;
+
+  // `Flush' flag to pass to next call to deflate.
+  private int flush_flag;
 }