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1 /* |
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2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * |
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16 */ |
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17 using System; |
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18 using System.IO; |
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19 using System.Text; |
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20 using System.Threading; |
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21 using System.Collections; |
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22 using SymbianUtils; |
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23 using SymbianUtils.Tracer; |
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24 using SymbolLib.Generics; |
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25 using SymbolLib.Sources.Symbol.File; |
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26 using SymbolLib.Sources.Symbol.Engine; |
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27 using SymbolLib.Sources.Symbol.Symbol; |
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28 using SymbolLib.Sources.Symbol.Collection; |
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29 |
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30 namespace SymbolLib.Sources.Symbol.Parser |
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31 { |
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32 #region SymbolCollectionCreator interface |
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33 internal interface SymbolCollectionCreator |
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34 { |
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35 SymbolsForBinary CreateCollection( string aHostFileName ); |
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36 } |
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37 #endregion |
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38 |
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39 #region SymbolEntryCreator interface |
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40 internal interface SymbolEntryCreator |
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41 { |
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42 SymbolSymbol CreateSymbol(); |
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43 } |
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44 #endregion |
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45 |
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46 internal class SymbolFileParser : AsyncTextFileReader |
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47 { |
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48 #region Delegates & events |
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49 public delegate void CollectionCreatedHandler( SymbolsForBinary aCollection ); |
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50 public event CollectionCreatedHandler CollectionCreated; |
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51 |
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52 public delegate bool CollectionCompletedHandler( SymbolsForBinary aCollection ); |
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53 public event CollectionCompletedHandler CollectionCompleted; |
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54 |
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55 public delegate void SymbolCreatedHandler( SymbolSymbol aSymbol ); |
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56 public event SymbolCreatedHandler SymbolCreated; |
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57 #endregion |
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58 |
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59 #region Constructors |
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60 internal SymbolFileParser( SymbolCollectionCreator aCollectionCreator, SymbolEntryCreator aEntryCreator, string aFileName, ITracer aTracer ) |
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61 : base( aFileName, aTracer ) |
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62 { |
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63 iCollectionCreator = aCollectionCreator; |
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64 iEntryCreator = aEntryCreator; |
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65 } |
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66 #endregion |
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67 |
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68 #region Constants |
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69 public const bool KCollectionCompletedAndAbortParsing = false; |
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70 public const bool KCollectionCompletedAndContinueParsing = true; |
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71 #endregion |
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72 |
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73 #region Parsing API |
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74 public void Read( TSynchronicity aSynchronicity ) |
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75 { |
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76 base.StartRead( aSynchronicity ); |
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77 } |
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78 #endregion |
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79 |
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80 #region Properties |
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81 public bool ContainedAtLeastOneCollectionFileName |
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82 { |
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83 get { return iContainedAtLeastOneCollectionFileName; } |
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84 } |
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85 #endregion |
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86 |
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87 #region From AsyncTextReader |
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88 protected override bool ImmediateAbort() |
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89 { |
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90 return iImmediateAbort; |
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91 } |
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92 |
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93 protected override void HandleReadStarted() |
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94 { |
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95 #if PROFILING |
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96 System.DateTime startTime = DateTime.Now; |
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97 |
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98 using ( System.IO.StreamReader reader = new StreamReader( this.FileName ) ) |
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99 { |
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100 string line = reader.ReadLine(); |
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101 while ( line != null ) |
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102 { |
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103 line = reader.ReadLine(); |
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104 } |
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105 } |
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106 |
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107 System.DateTime endTime = DateTime.Now; |
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108 long tickDuration = ( ( endTime.Ticks - startTime.Ticks ) / 100 ); |
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109 System.Diagnostics.Debug.WriteLine( "SIMPLE READ COMPLETE - " + tickDuration.ToString( "d6" ) ); |
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110 #endif |
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111 |
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112 base.HandleReadStarted(); |
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113 } |
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114 |
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115 protected override void HandleFilteredLine( string aLine ) |
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116 { |
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117 if ( aLine != null ) |
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118 { |
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119 int len = aLine.Length; |
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120 if ( len > 5 && aLine.Substring( 0, 5 ) == "From " ) |
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121 { |
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122 aLine = aLine.Substring( 5 ).TrimStart(); |
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123 HandleStartOfNewCollection( aLine ); |
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124 } |
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125 else |
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126 { |
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127 HandleSymbolLine( aLine ); |
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128 } |
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129 } |
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130 } |
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131 |
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132 protected override void HandleReadCompleted() |
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133 { |
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134 try |
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135 { |
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136 OnCollectionCompleted( iCurrentCollection ); |
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137 } |
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138 finally |
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139 { |
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140 base.HandleReadCompleted(); |
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141 } |
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142 } |
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143 |
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144 protected override void HandleReadException( Exception aException ) |
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145 { |
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146 base.HandleReadException( aException ); |
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147 // |
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148 System.Windows.Forms.MessageBox.Show( aException.StackTrace, aException.Message ); |
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149 } |
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150 #endregion |
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151 |
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152 #region Internal methods |
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153 private void OnCollectionCreated( SymbolsForBinary aCollection ) |
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154 { |
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155 if ( CollectionCreated != null && aCollection != null ) |
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156 { |
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157 CollectionCreated( aCollection ); |
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158 } |
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159 } |
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160 |
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161 private void OnCollectionCompleted( SymbolsForBinary aCollection ) |
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162 { |
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163 if ( CollectionCompleted != null && aCollection != null ) |
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164 { |
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165 // If returns immediate abort then we will stop parsing |
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166 // straight away. |
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167 iImmediateAbort = ( CollectionCompleted( aCollection ) == KCollectionCompletedAndAbortParsing ); |
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168 } |
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169 } |
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170 |
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171 private void HandleStartOfNewCollection( string aHostFileName ) |
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172 { |
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173 // Current collection is now complete |
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174 OnCollectionCompleted( iCurrentCollection ); |
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175 |
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176 // We will create the new collection once we see the first symbol |
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177 iCurrentCollection = null; |
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178 |
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179 // Cache the name of the new collection |
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180 iCurrentCollectionHostFileName = aHostFileName; |
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181 |
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182 // We've seen at least one "From" line. |
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183 iContainedAtLeastOneCollectionFileName = true; |
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184 } |
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185 |
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186 private void HandleSymbolLine( string aLine ) |
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187 { |
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188 try |
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189 { |
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190 // If we have not yet made a collection for this symbol, then do so now |
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191 CreateNewCollection(); |
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192 |
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193 SymbolSymbol entry = iEntryCreator.CreateSymbol(); |
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194 bool entryOk = entry.Parse( aLine ); |
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195 if ( entryOk && SymbolCreated != null ) |
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196 { |
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197 |
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198 // Notify that we created a symbol |
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199 SymbolCreated( entry ); |
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200 } |
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201 } |
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202 catch( GenericSymbolicCreationException ) |
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203 { |
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204 #if TRACE |
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205 System.Diagnostics.Debug.WriteLine( "SymbolParseException: " + aLine ); |
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206 #endif |
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207 } |
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208 } |
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209 |
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210 private void CreateNewCollection() |
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211 { |
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212 if ( iCurrentCollection == null ) |
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213 { |
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214 System.Diagnostics.Debug.Assert( !string.IsNullOrEmpty( iCurrentCollectionHostFileName ) ); |
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215 |
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216 // Combine symbol file drive letter with binary name from the symbol file itself. |
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217 string hostBinaryFileName = Path.GetPathRoot( base.FileName ); |
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218 if ( iCurrentCollectionHostFileName.StartsWith( @"\" ) ) |
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219 { |
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220 iCurrentCollectionHostFileName = iCurrentCollectionHostFileName.Substring( 1 ); |
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221 } |
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222 hostBinaryFileName = Path.Combine( hostBinaryFileName, iCurrentCollectionHostFileName ); |
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223 |
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224 iCurrentCollection = iCollectionCreator.CreateCollection( hostBinaryFileName ); |
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225 OnCollectionCreated( iCurrentCollection ); |
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226 iCurrentCollectionHostFileName = string.Empty; |
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227 } |
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228 } |
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229 #endregion |
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230 |
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231 #region Data members |
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232 private SymbolsForBinary iCurrentCollection = null; |
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233 private readonly SymbolEntryCreator iEntryCreator; |
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234 private readonly SymbolCollectionCreator iCollectionCreator; |
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235 private bool iImmediateAbort = false; |
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236 private string iCurrentCollectionHostFileName = string.Empty; |
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237 private bool iContainedAtLeastOneCollectionFileName = false; |
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238 #endregion |
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239 } |
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240 } |