Mercurial > hg > Applications > TightVNC_orginal

annotate src/main/java/com/glavsoft/transport/Reader.java @ 35:1b81deb0abb3

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write a little part reconnection.
author one
date Wed, 12 Sep 2012 13:16:47 +0900
parents 718cdde720d4
children b7d4d0349f99
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 // Copyright (C) 2010, 2011 GlavSoft LLC.
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2 // All rights reserved.
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3 //
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4 //-------------------------------------------------------------------------
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5 // This file is part of the TightVNC software. Please visit our Web site:
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6 //
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7 // http://www.tightvnc.com/
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8 //
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9 // This program is free software; you can redistribute it and/or modify
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10 // it under the terms of the GNU General Public License as published by
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11 // the Free Software Foundation; either version 2 of the License, or
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12 // (at your option) any later version.
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13 //
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14 // This program is distributed in the hope that it will be useful,
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15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 // GNU General Public License for more details.
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18 //
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19 // You should have received a copy of the GNU General Public License along
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20 // with this program; if not, write to the Free Software Foundation, Inc.,
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21 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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22 //-------------------------------------------------------------------------
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23 //
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24
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25 package com.glavsoft.transport;
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26
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27 import com.glavsoft.exceptions.ClosedConnectionException;
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28 import com.glavsoft.exceptions.TransportException;
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29
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30 import java.io.*;
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31 import java.nio.charset.Charset;
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32
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33 public class Reader {
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34 final static Charset ISO_8859_1 = Charset.forName("ISO-8859-1");
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35 private final DataInputStream is;
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36
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37 public Reader(InputStream is) {
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38 this.is = new DataInputStream(new BufferedInputStream(is));
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39 }
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40
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41 public byte readByte() throws TransportException {
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42 try {
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43 byte readByte = is.readByte();
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44 return readByte;
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45 } catch (EOFException e) {
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46 throw new ClosedConnectionException(e);
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47 } catch (IOException e) {
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48 throw new TransportException("Cannot read byte", e);
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49 }
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50 }
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51
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52 public int readUInt8() throws TransportException {
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53 return readByte() & 0x0ff;
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54 }
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55
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56 public int readUInt16() throws TransportException {
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57 return readInt16() & 0x0ffff;
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58 }
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59
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60 public short readInt16() throws TransportException {
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61 try {
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62 short readShort = is.readShort();
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63 return readShort;
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64 } catch (EOFException e) {
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65 throw new ClosedConnectionException(e);
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66 } catch (IOException e) {
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67 throw new TransportException("Cannot read int16", e);
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68 }
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69 }
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70
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71 public long readUInt32() throws TransportException {
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72 return readInt32() & 0xffffffffL;
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73 }
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74
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75 public int readInt32() throws TransportException {
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76 try {
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77 int readInt = is.readInt();
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78 return readInt;
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79 } catch (EOFException e) {
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80 throw new ClosedConnectionException(e);
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81 } catch (IOException e) {
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82 throw new TransportException("Cannot read int16", e);
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83 }
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84 }
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85
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86 /**
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87 * Read string by it length. Use this method only when sure no character
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88 * accept ASCII will be read. Use readBytes and character encoding
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89 * conversion instead.
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90 *
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91 * @return String read
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92 */
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93 public String readString(int length) throws TransportException {
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94 return new String(readBytes(length));
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95 }
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96
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97 /**
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98 * Read 32-bit string length and then string themself by it length Use this
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99 * method only when sure no character accept ASCII will be read. Use
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100 * readBytes and character encoding conversion instead.
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101 *
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102 * @return String read
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103 * @throws TransportException
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104 */
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105 public String readString() throws TransportException {
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106 // unset most sighificant (sign) bit 'cause InputStream#readFully
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107 // reads
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108 // [int] length bytes from stream. Change when realy need read sthing
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109 // more
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110 // than
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111 // 2147483647 bytes lenght
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112 int length = readInt32() & Integer.MAX_VALUE;
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113 return readString(length);
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114 }
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115
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116 public byte[] readBytes(int length) throws TransportException {
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117 byte b[] = new byte[length];
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118 return readBytes(b, 0, length);
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119 }
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120
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121 public byte[] readBytes(byte[] b, int offset, int length)
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122 throws TransportException {
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123 try {
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124 is.readFully(b, offset, length);
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125 return b;
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126 } catch (EOFException e) {
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127 throw new ClosedConnectionException(e);
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128 } catch (IOException e) {
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129 throw new TransportException("Cannot read " + length
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130 + " bytes array", e);
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131 }
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132 }
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133
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134 public byte[] readBytes(byte[] b) throws TransportException {
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135 byte[] result = readBytes(b, 0, b.length);
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136 return result;
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137 }
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138
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139 public void reset() throws TransportException {
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140 try {
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141 is.reset();
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142 } catch (IOException e) {
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143 throw new TransportException("Cannot reset", e);
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144 }
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145 }
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146
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147 public void mark(int readLimit) {
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148 is.mark(readLimit);
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149 }
17
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150
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151 public int readByte(byte[] b) throws TransportException {
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152 int result = 0;
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153 try {
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154 result = is.read(b);
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155 return result;
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156 } catch (IOException e) {
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157 throw new TransportException("Cannot readByte", e);
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158 }
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159 }
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160
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161 public void close() throws TransportException {
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162 try {
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163 is.close();
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164 } catch (IOException e) {
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165 throw new TransportException("Cannot close", e);
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166 }
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167 }
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168
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169 public void read(byte[] b) throws TransportException {
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170 try {
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171 is.read(b);
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172 } catch (IOException e) {
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173 throw new TransportException("Cannot read", e);
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174 }
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175 }
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176
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177 public int skypBytes(int n) throws TransportException {
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178 try {
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179 int r = is.skipBytes(n);
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180 return r;
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181 } catch (IOException e) {
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182 throw new TransportException("Cannot skipBytes", e);
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183 }
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184 }
0
4689cc86d6cb create TreeViewer2 Repository
Yu Taninari <you@cr.ie.u-ryukyu.ac.jp>
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185 }