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annotate gui/src/terminal/Vt102Emulation.h @ 13623:f03f4ac63569

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author Jacob Dawid <jacob.dawid@googlemail.com>
date Thu, 18 Aug 2011 13:53:32 +0200
parents c70511cf64ee
children
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1 /*
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2 This file is part of Konsole, an X terminal.
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3
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4 Copyright 2007-2008 by Robert Knight <robertknight@gmail.com>
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5 Copyright 1997,1998 by Lars Doelle <lars.doelle@on-line.de>
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6
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7 This program is free software; you can redistribute it and/or modify
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8 it under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 2 of the License, or
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10 (at your option) any later version.
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11
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12 This program is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with this program; if not, write to the Free Software
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19 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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20 02110-1301 USA.
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21 */
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22
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23 #ifndef VT102EMULATION_H
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24 #define VT102EMULATION_H
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25
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26 // Standard Library
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27 #include <stdio.h>
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28
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29 // Qt
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30 #include <QtGui/QKeyEvent>
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31 #include <QtCore/QHash>
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32 #include <QtCore/QTimer>
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33
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34 // Konsole
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35 #include "Emulation.h"
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36 #include "Screen.h"
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37
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38 #define MODE_AppScreen (MODES_SCREEN+0) // Mode #1
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39 #define MODE_AppCuKeys (MODES_SCREEN+1) // Application cursor keys (DECCKM)
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40 #define MODE_AppKeyPad (MODES_SCREEN+2) //
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41 #define MODE_Mouse1000 (MODES_SCREEN+3) // Send mouse X,Y position on press and release
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42 #define MODE_Mouse1001 (MODES_SCREEN+4) // Use Hilight mouse tracking
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43 #define MODE_Mouse1002 (MODES_SCREEN+5) // Use cell motion mouse tracking
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44 #define MODE_Mouse1003 (MODES_SCREEN+6) // Use all motion mouse tracking
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45 #define MODE_Ansi (MODES_SCREEN+7) // Use US Ascii for character sets G0-G3 (DECANM)
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46 #define MODE_132Columns (MODES_SCREEN+8) // 80 <-> 132 column mode switch (DECCOLM)
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47 #define MODE_Allow132Columns (MODES_SCREEN+9) // Allow DECCOLM mode
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48 #define MODE_total (MODES_SCREEN+10)
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49
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50 struct CharCodes
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51 {
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52 // coding info
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53 char charset[4]; //
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54 int cu_cs; // actual charset.
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55 bool graphic; // Some VT100 tricks
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56 bool pound; // Some VT100 tricks
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57 bool sa_graphic; // saved graphic
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58 bool sa_pound; // saved pound
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59 };
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60
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61 /**
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62 * Provides an xterm compatible terminal emulation based on the DEC VT102 terminal.
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63 * A full description of this terminal can be found at
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64 *
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65 * In addition, various additional xterm escape sequences are supported to provide
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66 * features such as mouse input handling.
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67 * See http://rtfm.etla.org/xterm/ctlseq.html for a description of xterm's escape
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68 * sequences.
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69 *
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70 */
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71 class Vt102Emulation:public Emulation
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72 {
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73 Q_OBJECT public:
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74 /** Constructs a new emulation */
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75 Vt102Emulation ();
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76 ~Vt102Emulation ();
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77
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78 // reimplemented from Emulation
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79 virtual void clearEntireScreen ();
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80 virtual void reset ();
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81 virtual char eraseChar () const;
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82
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83 public slots:
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84 // reimplemented from Emulation
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85 virtual void sendString (const char *, int length = -1);
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86 virtual void sendText (const QString & text);
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87 virtual void sendKeyEvent (QKeyEvent *);
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88 virtual void sendMouseEvent (int buttons, int column, int line,
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89 int eventType);
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90
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91 protected:
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92 // reimplemented from Emulation
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93 virtual void setMode (int mode);
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94 virtual void resetMode (int mode);
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95 virtual void receiveChar (int cc);
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96
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97 private slots:
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98 //causes changeTitle() to be emitted for each (int,QString) pair in pendingTitleUpdates
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99 //used to buffer multiple title updates
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100 void updateTitle ();
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101
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102 private:
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103 unsigned short applyCharset (unsigned short c);
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104 void setCharset (int n, int cs);
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105 void useCharset (int n);
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106 void setAndUseCharset (int n, int cs);
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107 void saveCursor ();
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108 void restoreCursor ();
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109 void resetCharset (int scrno);
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110
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111 void setMargins (int top, int bottom);
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112 //set margins for all screens back to their defaults
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113 void setDefaultMargins ();
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114
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115 // returns true if 'mode' is set or false otherwise
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116 bool getMode (int mode);
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117 // saves the current boolean value of 'mode'
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118 void saveMode (int mode);
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119 // restores the boolean value of 'mode'
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120 void restoreMode (int mode);
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121 // resets all modes
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122 // (except MODE_Allow132Columns)
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123 void resetModes ();
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124
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125 void resetTokenizer ();
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126 #define MAX_TOKEN_LENGTH 80
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127 void addToCurrentToken (int cc);
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128 int tokenBuffer[MAX_TOKEN_LENGTH]; //FIXME: overflow?
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129 int tokenBufferPos;
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130 #define MAXARGS 15
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131 void addDigit (int dig);
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132 void addArgument ();
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133 int argv[MAXARGS];
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134 int argc;
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135 void initTokenizer ();
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136
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137 // Set of flags for each of the ASCII characters which indicates
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138 // what category they fall into (printable character, control, digit etc.)
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139 // for the purposes of decoding terminal output
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140 int charClass[256];
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141
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142 void reportDecodingError ();
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143
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144 void processToken (int code, int p, int q);
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145 void processWindowAttributeChange ();
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146
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147 void reportTerminalType ();
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148 void reportSecondaryAttributes ();
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149 void reportStatus ();
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150 void reportAnswerBack ();
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151 void reportCursorPosition ();
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152 void reportTerminalParms (int p);
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153
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154 void onScrollLock ();
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155 void scrollLock (const bool lock);
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156
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157 // clears the screen and resizes it to the specified
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158 // number of columns
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159 void clearScreenAndSetColumns (int columnCount);
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160
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161 CharCodes _charset[2];
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162
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163 class TerminalState
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164 {
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165 public:
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166 // Initializes all modes to false
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167 TerminalState ()
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168 {
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169 memset (&mode, false, MODE_total * sizeof (bool));
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170 }
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171
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172 bool mode[MODE_total];
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173 };
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174
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175 TerminalState _currentModes;
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176 TerminalState _savedModes;
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177
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178 //hash table and timer for buffering calls to the session instance
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179 //to update the name of the session
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180 //or window title.
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181 //these calls occur when certain escape sequences are seen in the
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182 //output from the terminal
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183 QHash < int, QString > _pendingTitleUpdates;
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184 QTimer *_titleUpdateTimer;
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185 };
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186
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187 #endif // VT102EMULATION_H