From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- .../java/util/zip/DeflaterOutputStream.java | 198 +++++++++++++++++++++ 1 file changed, 198 insertions(+) create mode 100644 libjava/classpath/java/util/zip/DeflaterOutputStream.java (limited to 'libjava/classpath/java/util/zip/DeflaterOutputStream.java') diff --git a/libjava/classpath/java/util/zip/DeflaterOutputStream.java b/libjava/classpath/java/util/zip/DeflaterOutputStream.java new file mode 100644 index 000000000..6fd1c5cfb --- /dev/null +++ b/libjava/classpath/java/util/zip/DeflaterOutputStream.java @@ -0,0 +1,198 @@ +/* DeflaterOutputStream.java - Output filter for compressing. + Copyright (C) 1999, 2000, 2001, 2004, 2005 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 + * def.deflate() 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); + + // System.err.println("DOS deflated " + len + " out of " + buf.length); + if (len <= 0) + break; + out.write(buf, 0, len); + } + + if (! def.needsInput()) + throw new InternalError("Can't deflate all input?"); + } + + /** + * 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(), 4096); + } + + /** + * 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, 4096); + } + + /** + * 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; + } + + /** + * Flushes the stream by calling flush() on the deflater and then + * on the underlying stream. This ensures that all bytes are + * flushed. This function doesn't work in Sun's JDK, but only in + * jazzlib. + */ + public void flush() throws IOException + { + def.flush(); + deflate(); + out.flush(); + } + + /** + * 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 + { + def.finish(); + while (! def.finished()) + { + int len = def.deflate(buf, 0, buf.length); + if (len <= 0) + break; + out.write(buf, 0, len); + } + if (! def.finished()) + throw new InternalError("Can't deflate all input?"); + out.flush(); + } + + /** + * 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 + { + byte[] b = new byte[1]; + b[0] = (byte) bval; + write(b, 0, 1); + } + + /** + * 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 + { + def.setInput(buf, off, len); + deflate(); + } +} -- cgit v1.2.3