88 lines
1.7 KiB
Java
88 lines
1.7 KiB
Java
// DeflaterOutputStream.java - Output filter for compressing.
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/* Copyright (C) 1999 Free Software Foundation
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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package java.util.zip;
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import java.io.FilterOutputStream;
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import java.io.OutputStream;
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import java.io.IOException;
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/**
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* @author Tom Tromey
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* @date May 17, 1999
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*/
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/* Written using on-line Java Platform 1.2 API Specification
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* and JCL book.
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* Believed complete and correct.
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*/
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public class DeflaterOutputStream extends FilterOutputStream
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{
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public void close () throws IOException
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{
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finish ();
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out.close();
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}
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protected void deflate () throws IOException
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{
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while (true)
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{
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int len = def.deflate(buf, 0, buf.length);
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if (len == 0 || len == -1)
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break;
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out.write(buf, 0, len);
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}
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}
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public DeflaterOutputStream (OutputStream out)
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{
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this (out, new Deflater (), 512);
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}
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public DeflaterOutputStream (OutputStream out, Deflater defl)
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{
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this (out, defl, 512);
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}
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public DeflaterOutputStream(OutputStream out, Deflater defl, int bufsize)
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{
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super (out);
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buf = new byte[bufsize];
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def = defl;
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}
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public void finish () throws IOException
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{
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def.finish();
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deflate ();
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}
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public void write (int bval) throws IOException
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{
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byte[] b = new byte[1];
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b[0] = (byte) bval;
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write (b, 0, 1);
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}
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public void write (byte[] buf, int off, int len) throws IOException
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{
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def.setInput (buf, off, len);
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deflate ();
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}
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// The retrieval buffer.
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protected byte[] buf;
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// Deflater used to compress data.
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protected Deflater def;
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}
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