1 /* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
3 Copyright (c) 2001 Lapo Luchini.
5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions are met:
8 1. Redistributions of source code must retain the above copyright notice,
9 this list of conditions and the following disclaimer.
11 2. Redistributions in binary form must reproduce the above copyright
12 notice, this list of conditions and the following disclaimer in
13 the documentation and/or other materials provided with the distribution.
15 3. The names of the authors may not be used to endorse or promote products
16 derived from this software without specific prior written permission.
18 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
19 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS
21 OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
22 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
24 OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
25 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
26 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
27 EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 * This program is based on zlib-1.1.3, so all credit should go authors
31 * Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
32 * and contributors of zlib.
35 package com.jcraft.jzlib;
38 public class ZOutputStream extends OutputStream {
40 protected ZStream z=new ZStream();
41 protected int bufsize=512;
42 protected int flush=JZlib.Z_NO_FLUSH;
43 protected byte[] buf=new byte[bufsize],
45 protected boolean compress;
47 protected OutputStream out;
49 public ZOutputStream(OutputStream out) {
56 public ZOutputStream(OutputStream out, int level) {
57 this(out, level, false);
59 public ZOutputStream(OutputStream out, int level, boolean nowrap) {
62 z.deflateInit(level, nowrap);
66 public void write(int b) throws IOException {
71 public void write(byte b[], int off, int len) throws IOException {
87 throw new ZStreamException((compress?"de":"in")+"flating: "+z.msg);
88 out.write(buf, 0, bufsize-z.avail_out);
90 while(z.avail_in>0 || z.avail_out==0);
93 public int getFlushMode() {
97 public void setFlushMode(int flush) {
101 public void finish() throws IOException {
107 if(compress){ err=z.deflate(JZlib.Z_FINISH); }
108 else{ err=z.inflate(JZlib.Z_FINISH); }
109 if(err!=JZlib.Z_STREAM_END && err != JZlib.Z_OK)
110 throw new ZStreamException((compress?"de":"in")+"flating: "+z.msg);
111 if(bufsize-z.avail_out>0){
112 out.write(buf, 0, bufsize-z.avail_out);
115 while(z.avail_in>0 || z.avail_out==0);
121 if(compress){ z.deflateEnd(); }
122 else{ z.inflateEnd(); }
126 public void close() throws IOException {
129 catch (IOException ignored) {}
139 * Returns the total number of bytes input so far.
141 public long getTotalIn() {
146 * Returns the total number of bytes output so far.
148 public long getTotalOut() {
152 public void flush() throws IOException {