diff options
Diffstat (limited to 'libjava/java/util/zip/DeflaterOutputStream.java')
| -rw-r--r-- | libjava/java/util/zip/DeflaterOutputStream.java | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/libjava/java/util/zip/DeflaterOutputStream.java b/libjava/java/util/zip/DeflaterOutputStream.java deleted file mode 100644 index 37a3f9896ff..00000000000 --- a/libjava/java/util/zip/DeflaterOutputStream.java +++ /dev/null @@ -1,194 +0,0 @@ -/* DeflaterOutputStream.java - Output filter for compressing. - Copyright (C) 1999, 2000, 2001, 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.zip; - -import java.io.FilterOutputStream; -import java.io.IOException; -import java.io.OutputStream; - -/* Written using on-line Java Platform 1.2 API Specification - * and JCL book. - * Believed complete and correct. - */ - -/** - * This is a special FilterOutputStream deflating the bytes that are - * written through it. It uses the Deflater for deflating. - * - * A special thing to be noted is that flush() doesn't flush - * everything in Sun's JDK, but it does so in jazzlib. This is because - * Sun's Deflater doesn't have a way to flush() everything, without - * finishing the stream. - * - * @author Tom Tromey, Jochen Hoenicke - * @date Jan 11, 2001 - */ -public class DeflaterOutputStream extends FilterOutputStream -{ - /** - * This buffer is used temporarily to retrieve the bytes from the - * deflater and write them to the underlying output stream. - */ - protected byte[] buf; - - /** - * The deflater which is used to deflate the stream. - */ - protected Deflater def; - - /** - * Deflates everything in the def's input buffers. This will call - * <code>def.deflate()</code> until all bytes from the input buffers - * are processed. - */ - protected void deflate() throws IOException - { - while (! def.needsInput()) - { - int len = def.deflate(buf, 0, buf.length); - if (len > 0) - out.write(buf, 0, len); - } - } - - /** - * Creates a new DeflaterOutputStream with a default Deflater and - * default buffer size. - * @param out the output stream where deflated output should be written. - */ - public DeflaterOutputStream(OutputStream out) - { - this(out, new Deflater(), 512); - } - - /** - * Creates a new DeflaterOutputStream with the given Deflater and - * default buffer size. - * @param out the output stream where deflated output should be written. - * @param defl the underlying deflater. - */ - public DeflaterOutputStream(OutputStream out, Deflater defl) - { - this(out, defl, 512); - } - - /** - * Creates a new DeflaterOutputStream with the given Deflater and - * buffer size. - * @param out the output stream where deflated output should be written. - * @param defl the underlying deflater. - * @param bufsize the buffer size. - * @exception IllegalArgumentException if bufsize isn't positive. - */ - public DeflaterOutputStream(OutputStream out, Deflater defl, int bufsize) - { - super(out); - if (bufsize <= 0) - throw new IllegalArgumentException("bufsize <= 0"); - buf = new byte[bufsize]; - def = defl; - } - - /** - * Finishes the stream by calling finish() on the deflater. This - * was the only way to ensure that all bytes are flushed in Sun's - * JDK. - */ - public void finish() throws IOException - { - inbufWrite(); - def.finish(); - while (! def.finished()) - { - int len = def.deflate(buf, 0, buf.length); - if (len > 0) - out.write(buf, 0, len); - } - } - - /** - * Calls finish() and closes the stream. - */ - public void close() throws IOException - { - finish(); - out.close(); - } - - /** - * Writes a single byte to the compressed output stream. - * @param bval the byte value. - */ - public void write(int bval) throws IOException - { - if (inbuf == null) - inbuf = new byte[128]; - else if (inbufLength == inbuf.length) - inbufWrite(); - inbuf[inbufLength++] = (byte) bval; - } - - /** - * Writes a len bytes from an array to the compressed stream. - * @param buf the byte array. - * @param off the offset into the byte array where to start. - * @param len the number of bytes to write. - */ - public void write(byte[] buf, int off, int len) throws IOException - { - inbufWrite(); - def.setInput(buf, off, len); - deflate(); - } - - private void inbufWrite() throws IOException - { - if (inbufLength > 0) - { - int size = inbufLength; - inbufLength = 0; - write(inbuf, 0, size); - } - } - - // Used, if needed, for write(int). - private byte[] inbuf; - // Used length of inbuf. - private int inbufLength; -} |