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annotate third_party/sqlite3/Replace.cs @ 279:b3b547563ec7

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Add Google connector service and agent wiki Implement the C/Seobeo Google Drive and Gmail connector with encrypted OAuth storage, Zenbu authentication, browser testing, AI tool discovery, chunked HTTP decoding, and Bazel coverage. Consolidate repository guidance into progressive wiki documentation and enforce arena-first allocation for new first-party C code. Co-authored-by: Copilot <[email protected]> Copilot-Session: 84c338fd-0939-4bb3-b7f3-1062eb213e5d
author MrJuneJune <me@mrjunejune.com>
date Mon, 17 Aug 2026 22:22:36 -0700
parents 589bab390fb4
children
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1 /*
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2 ** 2016 February 26
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3 **
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4 ** The author disclaims copyright to this source code. In place of
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5 ** a legal notice, here is a blessing:
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6 **
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7 ** May you do good and not evil.
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8 ** May you find forgiveness for yourself and forgive others.
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9 ** May you share freely, never taking more than you give.
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10 **
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11 *************************************************************************
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12 ** This file contains C# code to perform regular expression replacements
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13 ** using the standard input and output channels.
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14 */
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15
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16 using System;
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17 using System.Diagnostics;
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18 using System.IO;
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19 using System.Reflection;
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20 using System.Runtime.InteropServices;
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21 using System.Text.RegularExpressions;
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22
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23 ///////////////////////////////////////////////////////////////////////////////
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24
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25 #region Assembly Metadata
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26 [assembly: AssemblyTitle("Replace Tool")]
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27 [assembly: AssemblyDescription("Replace text using standard input/output.")]
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28 [assembly: AssemblyCompany("SQLite Development Team")]
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29 [assembly: AssemblyProduct("SQLite")]
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30 [assembly: AssemblyCopyright("Public Domain")]
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31 [assembly: ComVisible(false)]
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32 [assembly: Guid("95a0513f-8863-48cd-a76f-cb80868cb578")]
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33 [assembly: AssemblyVersion("1.0.*")]
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34
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35 #if DEBUG
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36 [assembly: AssemblyConfiguration("Debug")]
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37 #else
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38 [assembly: AssemblyConfiguration("Release")]
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39 #endif
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40 #endregion
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41
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42 ///////////////////////////////////////////////////////////////////////////////
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43
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44 namespace Replace
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45 {
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46 /// <summary>
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47 /// This enumeration is used to represent all the possible exit codes from
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48 /// this tool.
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49 /// </summary>
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50 internal enum ExitCode
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51 {
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52 /// <summary>
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53 /// The file download was a success.
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54 /// </summary>
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55 Success = 0,
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56
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57 /// <summary>
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58 /// The command line arguments are missing (i.e. null). Generally,
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59 /// this should not happen.
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60 /// </summary>
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61 MissingArgs = 1,
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62
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63 /// <summary>
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64 /// The wrong number of command line arguments was supplied.
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65 /// </summary>
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66 WrongNumArgs = 2,
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67
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68 /// <summary>
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69 /// The "matchingOnly" flag could not be converted to a value of the
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70 /// <see cref="Boolean"/> type.
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71 /// </summary>
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72 BadMatchingOnlyFlag = 3,
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73
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74 /// <summary>
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75 /// An exception was caught in <see cref="Main" />. Generally, this
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76 /// should not happen.
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77 /// </summary>
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78 Exception = 4
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79 }
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80
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81 ///////////////////////////////////////////////////////////////////////////
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82
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83 internal static class Replace
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84 {
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85 #region Private Support Methods
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86 /// <summary>
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87 /// This method displays an error message to the console and/or
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88 /// displays the command line usage information for this tool.
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89 /// </summary>
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90 /// <param name="message">
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91 /// The error message to display, if any.
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92 /// </param>
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93 /// <param name="usage">
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94 /// Non-zero to display the command line usage information.
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95 /// </param>
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96 private static void Error(
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97 string message,
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98 bool usage
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99 )
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100 {
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101 if (message != null)
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102 Console.WriteLine(message);
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103
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104 string fileName = Path.GetFileName(
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105 Process.GetCurrentProcess().MainModule.FileName);
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106
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107 Console.WriteLine(String.Format(
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108 "usage: {0} <regExPattern> <regExSubSpec> <matchingOnly>",
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109 fileName));
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110 }
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111 #endregion
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112
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113 ///////////////////////////////////////////////////////////////////////
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114
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115 #region Program Entry Point
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116 /// <summary>
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117 /// This is the entry-point for this tool. It handles processing the
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118 /// command line arguments, reading from the standard input channel,
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119 /// replacing any matching lines of text, and writing to the standard
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120 /// output channel.
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121 /// </summary>
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122 /// <param name="args">
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123 /// The command line arguments.
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124 /// </param>
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125 /// <returns>
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126 /// Zero upon success; non-zero on failure. This will be one of the
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127 /// values from the <see cref="ExitCode" /> enumeration.
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128 /// </returns>
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129 private static int Main(
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130 string[] args
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131 )
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132 {
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133 //
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134 // NOTE: Sanity check the command line arguments.
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135 //
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136 if (args == null)
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137 {
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138 Error(null, true);
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139 return (int)ExitCode.MissingArgs;
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140 }
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141
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142 if (args.Length != 3)
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143 {
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144 Error(null, true);
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145 return (int)ExitCode.WrongNumArgs;
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146 }
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147
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148 try
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149 {
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150 //
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151 // NOTE: Create a regular expression from the first command
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152 // line argument. Then, grab the replacement string,
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153 // which is the second argument.
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154 //
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155 Regex regEx = new Regex(args[0]);
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156 string replacement = args[1];
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157
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158 //
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159 // NOTE: Attempt to convert the third argument to a boolean.
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160 //
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161 bool matchingOnly;
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162
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163 if (!bool.TryParse(args[2], out matchingOnly))
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164 {
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165 Error(null, true);
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166 return (int)ExitCode.BadMatchingOnlyFlag;
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167 }
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168
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169 //
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170 // NOTE: Grab the standard input and output channels from the
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171 // console.
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172 //
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173 TextReader inputTextReader = Console.In;
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174 TextWriter outputTextWriter = Console.Out;
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175
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176 //
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177 // NOTE: Loop until end-of-file is hit on the standard input
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178 // stream.
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179 //
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180 while (true)
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181 {
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182 //
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183 // NOTE: Read a line from the standard input channel. If
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184 // null is returned here, there is no more input and
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185 // we are done.
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186 //
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187 string inputLine = inputTextReader.ReadLine();
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188
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189 if (inputLine == null)
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190 break;
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191
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192 //
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193 // NOTE: Perform regular expression replacements on this
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194 // line, if any. Then, write the modified line to
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195 // the standard output channel.
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196 //
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197 string outputLine = regEx.Replace(inputLine, replacement);
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198
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199 if (!matchingOnly || !String.Equals(
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200 inputLine, outputLine, StringComparison.Ordinal))
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201 {
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202 outputTextWriter.WriteLine(outputLine);
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203 }
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204 }
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205
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206 //
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207 // NOTE: At this point, everything has succeeded.
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208 //
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209 return (int)ExitCode.Success;
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210 }
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211 catch (Exception e)
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212 {
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213 //
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214 // NOTE: An exception was caught. Report it via the console
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215 // and return failure.
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216 //
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217 Error(e.ToString(), false);
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218 return (int)ExitCode.Exception;
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219 }
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220 }
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221 #endregion
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222 }
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223 }