wasCSharpSQLite – Blame information for rev 4
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Rev | Author | Line No. | Line |
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1 | office | 1 | using System; |
2 | using System.Collections.Generic; |
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3 | using System.Text; |
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4 | using tcl.lang; |
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5 | using System.Reflection; |
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6 | |||
7 | class csTCL |
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8 | { |
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9 | /* |
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10 | ** 2009 July 17 |
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11 | ** |
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12 | ** The author disclaims copyright to this source code. In place of |
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13 | ** a legal notice, here is a blessing: |
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14 | ** |
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15 | ** May you do good and not evil. |
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16 | ** May you find forgiveness for yourself and forgive others. |
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17 | ** May you share freely, never taking more than you give. |
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18 | ** |
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19 | ************************************************************************* |
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20 | ** This file contains code to implement the "sqlite" test harness |
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21 | ** which runs TCL commands for testing the C#-SQLite port. |
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22 | ** |
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23 | ** $Header$ |
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24 | */ |
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25 | public static void Main(string[] args) |
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26 | { |
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27 | // Array of command-line argument strings. |
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28 | { |
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29 | string fileName = null; |
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30 | |||
31 | // Create the interpreter. This will also create the built-in |
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32 | // Tcl commands. |
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33 | |||
34 | Interp interp = new Interp(); |
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35 | |||
36 | // Make command-line arguments available in the Tcl variables "argc" |
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37 | // and "argv". If the first argument doesn't start with a "-" then |
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38 | // strip it off and use it as the name of a script file to process. |
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39 | // We also set the argv0 and TCL.Tcl_interactive vars here. |
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40 | |||
41 | if ((args.Length > 0) && !(args[0].StartsWith("-"))) |
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42 | { |
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43 | fileName = args[0]; |
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44 | } |
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45 | |||
46 | TclObject argv = TclList.newInstance(); |
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47 | argv.preserve(); |
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48 | try |
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49 | { |
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50 | int i = 0; |
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51 | int argc = args.Length; |
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52 | if ((System.Object)fileName == null) |
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53 | { |
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54 | interp.setVar("argv0", "tcl.lang.Shell", TCL.VarFlag.GLOBAL_ONLY); |
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55 | interp.setVar("tcl_interactive", "1", TCL.VarFlag.GLOBAL_ONLY); |
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56 | } |
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57 | else |
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58 | { |
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59 | interp.setVar("argv0", fileName, TCL.VarFlag.GLOBAL_ONLY); |
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60 | interp.setVar("tcl_interactive", "0", TCL.VarFlag.GLOBAL_ONLY); |
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61 | i++; |
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62 | argc--; |
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63 | } |
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64 | for (; i < args.Length; i++) |
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65 | { |
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66 | TclList.append(interp, argv, TclString.newInstance(args[i])); |
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67 | } |
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68 | interp.setVar("argv", argv, TCL.VarFlag.GLOBAL_ONLY); |
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69 | interp.setVar("argc", System.Convert.ToString(argc), TCL.VarFlag.GLOBAL_ONLY); |
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70 | } |
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71 | catch (TclException e) |
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72 | { |
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73 | throw new TclRuntimeError("unexpected TclException: " + e.Message); |
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74 | } |
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75 | finally |
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76 | { |
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77 | argv.release(); |
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78 | } |
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79 | |||
80 | // Normally we would do application specific initialization here. |
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81 | // However, that feature is not currently supported. |
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82 | // If a script file was specified then just source that file |
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83 | // and quit. |
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84 | |||
85 | Console.WriteLine("C#-TCL version " + Assembly.GetExecutingAssembly().GetName().Version.ToString()); |
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86 | Console.WriteLine("=============================================================="); |
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87 | Console.WriteLine(""); |
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88 | |||
89 | if ((System.Object)fileName != null) |
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90 | { |
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91 | try |
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92 | { |
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93 | interp.evalFile(fileName); |
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94 | } |
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95 | catch (TclException e) |
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96 | { |
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97 | TCL.CompletionCode code = e.getCompletionCode(); |
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98 | if (code == TCL.CompletionCode.RETURN) |
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99 | { |
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100 | code = interp.updateReturnInfo(); |
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101 | if (code != TCL.CompletionCode.OK) |
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102 | { |
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103 | System.Console.Error.WriteLine("command returned bad code: " + code); |
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104 | if (tcl.lang.ConsoleThread.debug) System.Diagnostics.Debug.WriteLine("command returned bad code: " + code); |
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105 | } |
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106 | } |
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107 | else if (code == TCL.CompletionCode.ERROR) |
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108 | { |
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109 | System.Console.Error.WriteLine(interp.getResult().ToString()); |
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110 | if (tcl.lang.ConsoleThread.debug) System.Diagnostics.Debug.WriteLine(interp.getResult().ToString()); |
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111 | System.Diagnostics.Debug.Assert(false, interp.getResult().ToString()); |
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112 | } |
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113 | else |
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114 | { |
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115 | System.Console.Error.WriteLine("command returned bad code: " + code); |
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116 | if (tcl.lang.ConsoleThread.debug) System.Diagnostics.Debug.WriteLine("command returned bad code: " + code); |
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117 | } |
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118 | } |
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119 | |||
120 | // Note that if the above interp.evalFile() returns the main |
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121 | // thread will exit. This may bring down the VM and stop |
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122 | // the execution of Tcl. |
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123 | // |
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124 | // If the script needs to handle events, it must call |
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125 | // vwait or do something similar. |
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126 | // |
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127 | // Note that the script can create AWT widgets. This will |
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128 | // start an AWT event handling thread and keep the VM up. However, |
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129 | // the interpreter thread (the same as the main thread) would |
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130 | // have exited and no Tcl scripts can be executed. |
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131 | |||
132 | interp.dispose(); |
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133 | |||
134 | System.Environment.Exit(0); |
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135 | } |
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136 | |||
137 | if ((System.Object)fileName == null) |
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138 | { |
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139 | // We are running in interactive mode. Start the ConsoleThread |
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140 | // that loops, grabbing stdin and passing it to the interp. |
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141 | |||
142 | ConsoleThread consoleThread = new ConsoleThread(interp); |
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143 | consoleThread.IsBackground = true; |
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144 | consoleThread.Start(); |
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145 | |||
146 | // Loop forever to handle user input events in the command line. |
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147 | |||
148 | Notifier notifier = interp.getNotifier(); |
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149 | while (true) |
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150 | { |
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151 | // process events until "exit" is called. |
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152 | |||
153 | notifier.doOneEvent(TCL.ALL_EVENTS); |
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154 | } |
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155 | } |
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156 | } |
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157 | } |
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158 | } |
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159 | |||
160 | namespace tcl.lang |
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161 | { |
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162 | class ConsoleThread : SupportClass.ThreadClass |
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163 | { |
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164 | private class AnonymousClassTclEvent : TclEvent |
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165 | { |
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166 | public AnonymousClassTclEvent(string command, ConsoleThread enclosingInstance) |
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167 | { |
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168 | InitBlock(command, enclosingInstance); |
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169 | } |
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170 | private void InitBlock(string command, ConsoleThread enclosingInstance) |
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171 | { |
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172 | this.command = command; |
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173 | this.enclosingInstance = enclosingInstance; |
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174 | } |
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175 | private string command; |
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176 | private ConsoleThread enclosingInstance; |
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177 | public ConsoleThread Enclosing_Instance |
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178 | { |
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179 | get |
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180 | { |
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181 | return enclosingInstance; |
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182 | } |
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183 | |||
184 | } |
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185 | public override int processEvent(int flags) |
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186 | { |
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187 | |||
188 | // See if the command is a complete Tcl command |
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189 | |||
190 | if (Interp.commandComplete(command)) |
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191 | { |
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192 | if (tcl.lang.ConsoleThread.debug) |
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193 | { |
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194 | WriteLine("line was a complete command"); |
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195 | } |
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196 | |||
197 | bool eval_exception = true; |
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198 | TclObject commandObj = TclString.newInstance(command); |
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199 | |||
200 | try |
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201 | { |
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202 | commandObj.preserve(); |
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203 | Enclosing_Instance.interp.recordAndEval(commandObj, 0); |
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204 | eval_exception = false; |
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205 | } |
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206 | catch (TclException e) |
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207 | { |
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208 | if (tcl.lang.ConsoleThread.debug) |
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209 | { |
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210 | WriteLine("eval returned exceptional condition"); |
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211 | } |
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212 | |||
213 | TCL.CompletionCode code = e.getCompletionCode(); |
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214 | switch (code) |
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215 | { |
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216 | |||
217 | case TCL.CompletionCode.ERROR: |
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218 | |||
219 | Enclosing_Instance.putLine(Enclosing_Instance.err, Enclosing_Instance.interp.getResult().ToString()); |
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220 | break; |
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221 | |||
222 | case TCL.CompletionCode.BREAK: |
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223 | Enclosing_Instance.putLine(Enclosing_Instance.err, "invoked \"break\" outside of a loop"); |
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224 | break; |
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225 | |||
226 | case TCL.CompletionCode.CONTINUE: |
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227 | Enclosing_Instance.putLine(Enclosing_Instance.err, "invoked \"continue\" outside of a loop"); |
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228 | break; |
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229 | |||
230 | default: |
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231 | Enclosing_Instance.putLine(Enclosing_Instance.err, "command returned bad code: " + code); |
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232 | break; |
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233 | |||
234 | } |
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235 | } |
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236 | finally |
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237 | { |
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238 | commandObj.release(); |
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239 | } |
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240 | |||
241 | if (!eval_exception) |
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242 | { |
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243 | if (tcl.lang.ConsoleThread.debug) |
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244 | { |
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245 | WriteLine("eval returned normally"); |
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246 | } |
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247 | |||
248 | |||
249 | string evalResult = Enclosing_Instance.interp.getResult().ToString(); |
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250 | |||
251 | if (tcl.lang.ConsoleThread.debug) |
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252 | { |
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253 | WriteLine("eval result was \"" + evalResult + "\""); |
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254 | } |
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255 | |||
256 | if (evalResult.Length > 0) |
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257 | { |
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258 | Enclosing_Instance.putLine(Enclosing_Instance.out_Renamed, evalResult); |
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259 | } |
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260 | } |
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261 | |||
262 | // Empty out the incoming command buffer |
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263 | Enclosing_Instance.sbuf.Length = 0; |
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264 | |||
265 | // See if the user set a custom shell prompt for the next command |
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266 | |||
267 | TclObject prompt; |
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268 | |||
269 | try |
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270 | { |
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271 | prompt = Enclosing_Instance.interp.getVar("tcl_prompt1", TCL.VarFlag.GLOBAL_ONLY); |
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272 | } |
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273 | catch (TclException e) |
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274 | { |
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275 | prompt = null; |
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276 | } |
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277 | if (prompt != null) |
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278 | { |
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279 | try |
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280 | { |
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281 | |||
282 | Enclosing_Instance.interp.eval(prompt.ToString(), TCL.EVAL_GLOBAL); |
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283 | } |
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284 | catch (TclException e) |
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285 | { |
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286 | Enclosing_Instance.put(Enclosing_Instance.out_Renamed, "% "); |
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287 | } |
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288 | } |
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289 | else |
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290 | { |
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291 | Enclosing_Instance.put(Enclosing_Instance.out_Renamed, "% "); |
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292 | } |
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293 | |||
294 | return 1; |
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295 | } |
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296 | else |
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297 | { |
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298 | // Interp.commandComplete() returned false |
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299 | |||
300 | if (tcl.lang.ConsoleThread.debug) |
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301 | { |
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302 | WriteLine("line was not a complete command"); |
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303 | } |
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304 | |||
305 | // We don't have a complete command yet. Print out a level 2 |
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306 | // prompt message and wait for further inputs. |
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307 | |||
308 | TclObject prompt; |
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309 | |||
310 | try |
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311 | { |
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312 | prompt = Enclosing_Instance.interp.getVar("tcl_prompt2", TCL.VarFlag.GLOBAL_ONLY); |
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313 | } |
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314 | catch (TclException) |
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315 | { |
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316 | prompt = null; |
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317 | } |
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318 | if (prompt != null) |
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319 | { |
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320 | try |
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321 | { |
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322 | |||
323 | Enclosing_Instance.interp.eval(prompt.ToString(), TCL.EVAL_GLOBAL); |
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324 | } |
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325 | catch (TclException e) |
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326 | { |
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327 | Enclosing_Instance.put(Enclosing_Instance.out_Renamed, ""); |
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328 | } |
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329 | } |
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330 | else |
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331 | { |
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332 | Enclosing_Instance.put(Enclosing_Instance.out_Renamed, ""); |
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333 | } |
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334 | |||
335 | return 1; |
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336 | } |
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337 | } // end processEvent method |
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338 | } |
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339 | |||
340 | // Interpreter associated with this console thread. |
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341 | |||
342 | internal Interp interp; |
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343 | |||
344 | // Collect the user input in this buffer until it forms a complete Tcl |
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345 | // command. |
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346 | |||
347 | internal System.Text.StringBuilder sbuf; |
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348 | |||
349 | // Used to for interactive input/output |
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350 | |||
351 | private Channel out_Renamed; |
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352 | private Channel err; |
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353 | |||
354 | // set to true to get extra debug output |
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355 | public const bool debug = true; |
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356 | |||
357 | // used to keep track of wether or not System.in.available() works |
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358 | private static bool sysInAvailableWorks = false; |
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359 | |||
360 | internal ConsoleThread(Interp i) |
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361 | { |
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362 | Name = "ConsoleThread"; |
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363 | interp = i; |
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364 | sbuf = new System.Text.StringBuilder(100); |
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365 | |||
366 | out_Renamed = TclIO.getStdChannel(StdChannel.STDOUT); |
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367 | err = TclIO.getStdChannel(StdChannel.STDERR); |
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368 | } |
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369 | override public void Run() |
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370 | { |
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371 | if (debug) |
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372 | { |
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373 | WriteLine("entered ConsoleThread run() method"); |
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374 | } |
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375 | |||
376 | |||
377 | put(out_Renamed, "% "); |
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378 | |||
379 | while (true) |
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380 | { |
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381 | // Loop forever to collect user inputs in a StringBuffer. |
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382 | // When we have a complete command, then execute it and print |
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383 | // out the results. |
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384 | // |
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385 | // The loop is broken under two conditions: (1) when EOF is |
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386 | // received inside getLine(). (2) when the "exit" command is |
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387 | // executed in the script. |
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388 | |||
389 | getLine(); |
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390 | string command = sbuf.ToString(); |
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391 | |||
392 | if (debug) |
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393 | { |
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394 | WriteLine("got line from console"); |
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395 | WriteLine("\"" + command + "\""); |
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396 | } |
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397 | |||
398 | // When interacting with the interpreter, one must |
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399 | // be careful to never call a Tcl method from |
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400 | // outside of the event loop thread. If we did |
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401 | // something like just call interp.eval() it |
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402 | // could crash the whole process because two |
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403 | // threads might write over each other. |
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404 | |||
405 | // The only safe way to interact with Tcl is |
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406 | // to create an event and add it to the thread |
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407 | // safe event queue. |
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408 | |||
409 | TclEvent Tevent = new AnonymousClassTclEvent(command, this); // end TclEvent innerclass |
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410 | |||
411 | // Add the event to the thread safe event queue |
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412 | interp.getNotifier().queueEvent(Tevent, TCL.QUEUE_TAIL); |
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413 | |||
414 | // Tell this thread to wait until the event has been processed. |
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415 | Tevent.sync(); |
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416 | } |
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417 | } |
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418 | private static void WriteLine(string s) |
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419 | { |
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420 | System.Console.Out.WriteLine(s); |
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421 | if (debug) System.Diagnostics.Debug.WriteLine(s); |
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422 | } |
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423 | private void getLine() |
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424 | { |
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425 | sbuf.Append(Console.In.ReadLine()); |
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426 | } |
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427 | private void putLine(Channel channel, string s) |
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428 | // The String to print. |
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429 | { |
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430 | try |
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431 | { |
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432 | channel.write(interp, s); |
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433 | channel.write(interp, "\n"); |
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434 | channel.flush(interp); |
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435 | } |
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436 | catch (System.IO.IOException ex) |
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437 | { |
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438 | System.Console.Error.WriteLine("IOException in Shell.putLine()"); |
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439 | SupportClass.WriteStackTrace(ex, System.Console.Error); |
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440 | } |
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441 | catch (TclException ex) |
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442 | { |
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443 | System.Console.Error.WriteLine("TclException in Shell.putLine()"); |
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444 | SupportClass.WriteStackTrace(ex, System.Console.Error); |
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445 | } |
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446 | } |
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447 | private void put(Channel channel, string s) |
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448 | // The String to print. |
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449 | { |
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450 | try |
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451 | { |
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452 | channel.write(interp, s); |
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453 | channel.flush(interp); |
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454 | } |
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455 | catch (System.IO.IOException ex) |
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456 | { |
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457 | System.Console.Error.WriteLine("IOException in Shell.put()"); |
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458 | SupportClass.WriteStackTrace(ex, System.Console.Error); |
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459 | } |
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460 | catch (TclException ex) |
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461 | { |
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462 | System.Console.Error.WriteLine("TclException in Shell.put()"); |
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463 | SupportClass.WriteStackTrace(ex, System.Console.Error); |
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464 | } |
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465 | } |
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466 | static ConsoleThread() |
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467 | { |
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468 | { |
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469 | try |
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470 | { |
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471 | // There is no way to tell whether System.in will block AWT |
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472 | // threads, so we assume it does block if we can use |
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473 | // System.in.available(). |
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474 | |||
475 | long available = 0; |
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476 | // HACK ATK |
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477 | // available = System.Console.In.Length - System.Console.In.Position; |
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478 | int generatedAux5 = (int)available; |
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479 | sysInAvailableWorks = true; |
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480 | } |
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481 | catch (System.Exception e) |
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482 | { |
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483 | // If System.in.available() causes an exception -- it's probably |
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484 | // no supported on this platform (e.g. MS Java SDK). We assume |
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485 | // sysInAvailableWorks is false and let the user suffer ... |
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486 | } |
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487 | |||
488 | // Sun's JDK 1.2 on Windows systems is screwed up, it does not |
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489 | // echo chars to the console unless blocking IO is used. |
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490 | // For this reason we need to use blocking IO under Windows. |
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491 | |||
492 | if (Util.Windows) |
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493 | { |
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494 | sysInAvailableWorks = false; |
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495 | } |
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496 | if (debug) |
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497 | { |
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498 | WriteLine("sysInAvailableWorks = " + sysInAvailableWorks); |
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499 | } |
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500 | } |
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501 | } |
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502 | } // end of class ConsoleThread |
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503 | } |