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comparison src/com/jcraft/jzlib/ZOutputStream.java @ 357:46c2115ae1c8

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update jzlib to a21be20213d66eff15904d925e9b721956a01ef7
author Carl Byington <carl@five-ten-sg.com>
date Fri, 01 Aug 2014 13:34:58 -0700
parents 0ce5cc452d02
children
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356:5e91b559b5fe 357:46c2115ae1c8
1 /* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */ 1 /* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
2 /* 2 /*
3 Copyright (c) 2001 Lapo Luchini. 3 Copyright (c) 2011 ymnk, JCraft,Inc. All rights reserved.
4 4
5 Redistribution and use in source and binary forms, with or without 5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions are met: 6 modification, are permitted provided that the following conditions are met:
7 7
8 1. Redistributions of source code must retain the above copyright notice, 8 1. Redistributions of source code must retain the above copyright notice,
9 this list of conditions and the following disclaimer. 9 this list of conditions and the following disclaimer.
10 10
11 2. Redistributions in binary form must reproduce the above copyright 11 2. Redistributions in binary form must reproduce the above copyright
12 notice, this list of conditions and the following disclaimer in 12 notice, this list of conditions and the following disclaimer in
13 the documentation and/or other materials provided with the distribution. 13 the documentation and/or other materials provided with the distribution.
14 14
15 3. The names of the authors may not be used to endorse or promote products 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. 16 derived from this software without specific prior written permission.
17 17
18 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, 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 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 20 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
21 OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT, 21 INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
22 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 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 24 OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
25 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 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, 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. 27 EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */ 28 */
29 /*
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.
33 */
34 29
35 package com.jcraft.jzlib; 30 package com.jcraft.jzlib;
36 import java.io.*; 31 import java.io.*;
37 32
38 public class ZOutputStream extends OutputStream { 33 /**
34 * ZOutputStream
35 *
36 * @deprecated use DeflaterOutputStream or InflaterInputStream
37 */
38 @Deprecated
39 public class ZOutputStream extends FilterOutputStream {
39 40
40 protected ZStream z = new ZStream(); 41 protected int bufsize=512;
41 protected int bufsize = 512; 42 protected int flush=JZlib.Z_NO_FLUSH;
42 protected int flush = JZlib.Z_NO_FLUSH; 43 protected byte[] buf=new byte[bufsize];
43 protected byte[] buf = new byte[bufsize], 44 protected boolean compress;
44 buf1 = new byte[1];
45 protected boolean compress;
46 45
47 protected OutputStream out; 46 protected OutputStream out;
47 private boolean end=false;
48 48
49 public ZOutputStream(OutputStream out) { 49 private DeflaterOutputStream dos;
50 super(); 50 private Inflater inflater;
51 this.out = out; 51
52 z.inflateInit(); 52 public ZOutputStream(OutputStream out) throws IOException {
53 compress = false; 53 super(out);
54 this.out=out;
55 inflater = new Inflater();
56 inflater.init();
57 compress=false;
58 }
59
60 public ZOutputStream(OutputStream out, int level) throws IOException {
61 this(out, level, false);
62 }
63
64 public ZOutputStream(OutputStream out, int level, boolean nowrap) throws IOException {
65 super(out);
66 this.out=out;
67 Deflater deflater = new Deflater(level, nowrap);
68 dos = new DeflaterOutputStream(out, deflater);
69 compress=true;
70 }
71
72 private byte[] buf1 = new byte[1];
73 public void write(int b) throws IOException {
74 buf1[0]=(byte)b;
75 write(buf1, 0, 1);
76 }
77
78 public void write(byte b[], int off, int len) throws IOException {
79 if(len==0) return;
80 if(compress){
81 dos.write(b, off, len);
54 } 82 }
83 else {
84 inflater.setInput(b, off, len, true);
85 int err = JZlib.Z_OK;
86 while(inflater.avail_in>0){
87 inflater.setOutput(buf, 0, buf.length);
88 err = inflater.inflate(flush);
89 if(inflater.next_out_index>0)
90 out.write(buf, 0, inflater.next_out_index);
91 if(err != JZlib.Z_OK)
92 break;
93 }
94 if(err != JZlib.Z_OK)
95 throw new ZStreamException("inflating: "+inflater.msg);
96 return;
97 }
98 }
55 99
56 public ZOutputStream(OutputStream out, int level) { 100 public int getFlushMode() {
57 this(out, level, false); 101 return flush;
102 }
103
104 public void setFlushMode(int flush) {
105 this.flush=flush;
106 }
107
108 public void finish() throws IOException {
109 int err;
110 if(compress){
111 int tmp = flush;
112 int flush = JZlib.Z_FINISH;
113 try{
114 write("".getBytes(), 0, 0);
115 }
116 finally { flush = tmp; }
58 } 117 }
59 public ZOutputStream(OutputStream out, int level, boolean nowrap) { 118 else{
60 super(); 119 dos.finish();
61 this.out = out;
62 z.deflateInit(level, nowrap);
63 compress = true;
64 } 120 }
121 flush();
122 }
123 public synchronized void end() {
124 if(end) return;
125 if(compress){
126 try { dos.finish(); } catch(Exception e){}
127 }
128 else{
129 inflater.end();
130 }
131 end=true;
132 }
133 public void close() throws IOException {
134 try{
135 try{finish();}
136 catch (IOException ignored) {}
137 }
138 finally{
139 end();
140 out.close();
141 out=null;
142 }
143 }
65 144
66 public void write(int b) throws IOException { 145 public long getTotalIn() {
67 buf1[0] = (byte)b; 146 if(compress) return dos.getTotalIn();
68 write(buf1, 0, 1); 147 else return inflater.total_in;
69 } 148 }
70 149
71 public void write(byte b[], int off, int len) throws IOException { 150 public long getTotalOut() {
72 if (len == 0) 151 if(compress) return dos.getTotalOut();
73 return; 152 else return inflater.total_out;
153 }
74 154
75 int err; 155 public void flush() throws IOException {
76 z.next_in = b; 156 out.flush();
77 z.next_in_index = off; 157 }
78 z.avail_in = len;
79
80 do {
81 z.next_out = buf;
82 z.next_out_index = 0;
83 z.avail_out = bufsize;
84
85 if (compress)
86 err = z.deflate(flush);
87 else
88 err = z.inflate(flush);
89
90 if (err != JZlib.Z_OK)
91 throw new ZStreamException((compress ? "de" : "in") + "flating: " + z.msg);
92
93 out.write(buf, 0, bufsize - z.avail_out);
94 }
95 while (z.avail_in > 0 || z.avail_out == 0);
96 }
97
98 public int getFlushMode() {
99 return (flush);
100 }
101
102 public void setFlushMode(int flush) {
103 this.flush = flush;
104 }
105
106 public void finish() throws IOException {
107 int err;
108
109 do {
110 z.next_out = buf;
111 z.next_out_index = 0;
112 z.avail_out = bufsize;
113
114 if (compress) { err = z.deflate(JZlib.Z_FINISH); }
115 else { err = z.inflate(JZlib.Z_FINISH); }
116
117 if (err != JZlib.Z_STREAM_END && err != JZlib.Z_OK)
118 throw new ZStreamException((compress ? "de" : "in") + "flating: " + z.msg);
119
120 if (bufsize - z.avail_out > 0) {
121 out.write(buf, 0, bufsize - z.avail_out);
122 }
123 }
124 while (z.avail_in > 0 || z.avail_out == 0);
125
126 flush();
127 }
128 public void end() {
129 if (z == null)
130 return;
131
132 if (compress) { z.deflateEnd(); }
133 else { z.inflateEnd(); }
134
135 z.free();
136 z = null;
137 }
138 public void close() throws IOException {
139 try {
140 try {finish();}
141 catch (IOException ignored) {}
142 }
143 finally {
144 end();
145 out.close();
146 out = null;
147 }
148 }
149
150 /**
151 * Returns the total number of bytes input so far.
152 */
153 public long getTotalIn() {
154 return z.total_in;
155 }
156
157 /**
158 * Returns the total number of bytes output so far.
159 */
160 public long getTotalOut() {
161 return z.total_out;
162 }
163
164 public void flush() throws IOException {
165 out.flush();
166 }
167 158
168 } 159 }