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annotate src/com/jcraft/jzlib/Inflater.java @ 430:47de9ffed872 stable-1.9.0-9

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add feature icon for google play store
author Carl Byington <carl@five-ten-sg.com>
date Fri, 26 Dec 2014 10:35:26 -0800
parents 46c2115ae1c8
children
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357
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1 /* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
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2 /*
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3 Copyright (c) 2011 ymnk, JCraft,Inc. All rights reserved.
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4
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5 Redistribution and use in source and binary forms, with or without
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6 modification, are permitted provided that the following conditions are met:
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7
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8 1. Redistributions of source code must retain the above copyright notice,
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9 this list of conditions and the following disclaimer.
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10
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11 2. Redistributions in binary form must reproduce the above copyright
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12 notice, this list of conditions and the following disclaimer in
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13 the documentation and/or other materials provided with the distribution.
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14
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15 3. The names of the authors may not be used to endorse or promote products
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16 derived from this software without specific prior written permission.
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17
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18 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
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19 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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20 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
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21 INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
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22 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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23 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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24 OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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25 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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26 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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27 EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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28 */
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29 /*
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30 * This program is based on zlib-1.1.3, so all credit should go authors
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31 * Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
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32 * and contributors of zlib.
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33 */
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34
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35 package com.jcraft.jzlib;
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36
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37 final public class Inflater extends ZStream{
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38
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39 static final private int MAX_WBITS=15; // 32K LZ77 window
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40 static final private int DEF_WBITS=MAX_WBITS;
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41
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42 static final private int Z_NO_FLUSH=0;
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43 static final private int Z_PARTIAL_FLUSH=1;
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44 static final private int Z_SYNC_FLUSH=2;
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45 static final private int Z_FULL_FLUSH=3;
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46 static final private int Z_FINISH=4;
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47
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48 static final private int MAX_MEM_LEVEL=9;
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49
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50 static final private int Z_OK=0;
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51 static final private int Z_STREAM_END=1;
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52 static final private int Z_NEED_DICT=2;
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53 static final private int Z_ERRNO=-1;
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54 static final private int Z_STREAM_ERROR=-2;
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55 static final private int Z_DATA_ERROR=-3;
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56 static final private int Z_MEM_ERROR=-4;
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57 static final private int Z_BUF_ERROR=-5;
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58 static final private int Z_VERSION_ERROR=-6;
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59
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60 public Inflater() {
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61 super();
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62 init();
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63 }
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64
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65 public Inflater(JZlib.WrapperType wrapperType) throws GZIPException {
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66 this(DEF_WBITS, wrapperType);
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67 }
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68
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69 public Inflater(int w, JZlib.WrapperType wrapperType) throws GZIPException {
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70 super();
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71 int ret = init(w, wrapperType);
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72 if(ret!=Z_OK)
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73 throw new GZIPException(ret+": "+msg);
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74 }
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75
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76 public Inflater(int w) throws GZIPException {
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77 this(w, false);
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78 }
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79
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80 public Inflater(boolean nowrap) throws GZIPException {
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81 this(DEF_WBITS, nowrap);
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82 }
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83
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84 public Inflater(int w, boolean nowrap) throws GZIPException {
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85 super();
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86 int ret = init(w, nowrap);
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87 if(ret!=Z_OK)
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88 throw new GZIPException(ret+": "+msg);
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89 }
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90
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91 private boolean finished = false;
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92
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93 public int init(){
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94 return init(DEF_WBITS);
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95 }
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96
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97 public int init(JZlib.WrapperType wrapperType){
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98 return init(DEF_WBITS, wrapperType);
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99 }
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100
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101 public int init(int w, JZlib.WrapperType wrapperType) {
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102 boolean nowrap = false;
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103 if(wrapperType == JZlib.W_NONE){
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104 nowrap = true;
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105 }
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106 else if(wrapperType == JZlib.W_GZIP) {
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107 w += 16;
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108 }
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109 else if(wrapperType == JZlib.W_ANY) {
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110 w |= Inflate.INFLATE_ANY;
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parents:
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111 }
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parents:
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112 else if(wrapperType == JZlib.W_ZLIB) {
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parents:
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113 }
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parents:
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114 return init(w, nowrap);
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parents:
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115 }
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116
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117 public int init(boolean nowrap){
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118 return init(DEF_WBITS, nowrap);
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119 }
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120
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121 public int init(int w){
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122 return init(w, false);
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parents:
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123 }
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124
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125 public int init(int w, boolean nowrap){
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126 finished = false;
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127 istate=new Inflate(this);
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128 return istate.inflateInit(nowrap?-w:w);
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129 }
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parents:
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130
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131 public int inflate(int f){
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132 if(istate==null) return Z_STREAM_ERROR;
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parents:
diff changeset
133 int ret = istate.inflate(f);
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parents:
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134 if(ret == Z_STREAM_END)
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135 finished = true;
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parents:
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136 return ret;
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parents:
diff changeset
137 }
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parents:
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138
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Carl Byington <carl@five-ten-sg.com>
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139 public int end(){
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parents:
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140 finished = true;
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
141 if(istate==null) return Z_STREAM_ERROR;
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
142 int ret=istate.inflateEnd();
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
143 // istate = null;
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parents:
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144 return ret;
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Carl Byington <carl@five-ten-sg.com>
parents:
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145 }
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parents:
diff changeset
146
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
147 public int sync(){
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parents:
diff changeset
148 if(istate == null)
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parents:
diff changeset
149 return Z_STREAM_ERROR;
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parents:
diff changeset
150 return istate.inflateSync();
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parents:
diff changeset
151 }
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
152
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
153 public int syncPoint(){
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
154 if(istate == null)
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parents:
diff changeset
155 return Z_STREAM_ERROR;
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
156 return istate.inflateSyncPoint();
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
157 }
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
158
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
159 public int setDictionary(byte[] dictionary, int dictLength){
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
160 if(istate == null)
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
161 return Z_STREAM_ERROR;
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
162 return istate.inflateSetDictionary(dictionary, dictLength);
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
163 }
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
164
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
165 public boolean finished(){
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
166 return istate.mode==12 /*DONE*/;
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Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
167 }
46c2115ae1c8 update jzlib to a21be20213d66eff15904d925e9b721956a01ef7
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
168 }