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1 /* |
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2 * Copyright (c) 2005 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 |
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18 |
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19 |
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20 |
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21 |
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22 |
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23 |
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24 |
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25 #include "SenFilterCondition.h" |
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26 |
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27 #include "SenFilterStateMachine.h" |
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28 |
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29 #include "SenDebug.h" |
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30 #include "SenLogger.h" |
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31 |
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32 |
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33 _LIT(KLogFileDir, "WsLog"); |
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34 _LIT(KLogFileName, "SenXml.log"); |
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35 |
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36 // ---------------------------------------------- |
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37 // |
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38 // Implementation of class CSenFilterStateMachine |
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39 // |
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40 // ---------------------------------------------- |
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41 |
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42 |
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43 EXPORT_C CSenFilterStateMachine::CSenFilterStateMachine() |
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44 : iStateTable(ETrue, ETrue) |
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45 { |
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46 TLSLOG_OPEN(KSenXmlLogChannel, KSenXmlLogLevel, KSenXml, KSenXmlLog); |
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47 TLSLOG(KSenXmlLogChannel , KSenXmlLogLevel , _L8("CSenFilterStateMachine::CSenFilterStateMachine(): Log opened")); |
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48 |
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49 iStates = 0; |
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50 iFilterState = 0; |
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51 |
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52 TLSLOG(KSenXmlLogChannel , KSenXmlLogLevel , _L8("CSenFilterStateMachine::CSenFilterStateMachine(): End")); |
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53 } |
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54 |
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55 |
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56 EXPORT_C CSenFilterStateMachine::~CSenFilterStateMachine() |
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57 { |
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58 iStateTable.Reset(); |
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59 |
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60 // Close the log file and the connection to the server. |
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61 TLSLOG(KSenXmlLogChannel , KSenXmlLogLevel , (_L("Log file closed."))); |
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62 TLSLOG_CLOSE(KSenXmlLogChannel); |
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63 } |
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64 |
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65 |
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66 /* Add a node to the state tree */ |
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67 EXPORT_C CSenFilterStateNode* |
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68 CSenFilterStateMachine::AddChildLC(CSenFilterStateNode& aStartState, |
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69 const TDesC8& aEvent, |
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70 const CSenFilterCondition& aCondition, |
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71 MSenFilterAction& aStartAction, |
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72 MSenFilterAction& aEndAction) |
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73 { |
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74 CSenFilterStateNode* newNode = new CSenFilterStateNode(aEvent, |
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75 aCondition, |
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76 aStartAction, |
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77 aEndAction, |
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78 *this); |
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79 |
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80 CleanupStack::PushL(newNode); |
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81 newNode->SetParent(aStartState); |
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82 |
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83 // Array takes care of memory deallocation |
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84 aStartState.Children().Append(newNode); |
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85 |
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86 return newNode; |
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87 } |
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88 |
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89 |
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90 /* Add the root node to the state tree */ |
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91 EXPORT_C CSenFilterStateNode* |
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92 CSenFilterStateMachine::AddParentLC(const TDesC8& aEvent, |
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93 const CSenFilterCondition& aCondition, |
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94 MSenFilterAction& aStartAction, |
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95 MSenFilterAction& aEndAction) |
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96 { |
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97 CSenFilterStateNode* newNode = new CSenFilterStateNode(aEvent, |
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98 aCondition, |
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99 aStartAction, |
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100 aEndAction, |
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101 *this); |
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102 CleanupStack::PushL(newNode); |
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103 return newNode; |
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104 } |
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105 |
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106 |
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107 /* Recursively compile the tree into a state table */ |
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108 EXPORT_C void CSenFilterStateMachine::CompileL(CSenFilterStateNode& aStartNode) |
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109 { |
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110 TInt p = 0; // initial state |
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111 |
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112 p = aStartNode.Parent().State(); |
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113 |
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114 AddEntryL(p, |
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115 aStartNode.Event(), |
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116 aStartNode.Condition(), |
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117 aStartNode.State(), |
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118 aStartNode.StartAction(), |
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119 aStartNode.EndAction()); |
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120 |
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121 TInt count = aStartNode.Children().Count(); |
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122 for ( TInt i=0; i < count; i++ ) |
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123 { |
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124 CSenFilterStateNode* node = (aStartNode.Children())[i]; |
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125 CompileL(*node); |
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126 } |
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127 } |
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128 |
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129 |
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130 EXPORT_C void CSenFilterStateMachine::StartElementL(const TDesC8& aName, |
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131 const RAttributeArray& aAttributes) |
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132 { |
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133 TransitionL(iFilterState, aName, (TInt)EStart, aAttributes); |
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134 } |
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135 |
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136 |
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137 EXPORT_C void CSenFilterStateMachine::EndElementL(const TDesC8& aName) |
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138 { |
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139 RAttributeArray attrs; |
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140 TransitionL(iFilterState, aName, (TInt)EEnd, attrs); |
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141 } |
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142 |
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143 |
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144 |
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145 const TInt CSenFilterStateMachine::RegisterState() |
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146 { |
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147 return ++iStates; |
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148 } |
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149 |
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150 |
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151 const TInt CSenFilterStateMachine::States() const |
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152 { |
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153 return iStates; |
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154 } |
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155 |
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156 |
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157 void CSenFilterStateMachine::AddEntryL(TInt aInitialState, |
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158 const TDesC8& aEvent, |
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159 const CSenFilterCondition& aCondition, |
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160 TInt aNextState, |
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161 MSenFilterAction& aStartAction, |
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162 MSenFilterAction& aEndAction) |
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163 { |
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164 CSenFilterTableEntry *entry = NULL; |
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165 TUint16 c; |
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166 |
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167 |
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168 // Start node |
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169 c = GetStateKeyL(aInitialState, |
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170 aEvent, |
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171 (TInt)EStart); |
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172 |
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173 entry = new CSenFilterTableEntry(aNextState, |
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174 aCondition, |
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175 aStartAction); |
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176 CleanupStack::PushL(entry); |
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177 |
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178 // Map takes care of memory deallocation |
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179 iStateTable.Append(&c, entry); |
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180 |
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181 CleanupStack::Pop(); // entry |
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182 |
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183 // End node |
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184 c = GetStateKeyL(aNextState, |
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185 aEvent, |
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186 (TInt)EEnd); |
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187 |
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188 entry = new CSenFilterTableEntry(aInitialState, |
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189 aCondition, |
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190 aEndAction); |
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191 CleanupStack::PushL(entry); |
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192 |
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193 // Map takes care of memory deallocation |
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194 iStateTable.Append(&c, entry); |
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195 |
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196 CleanupStack::Pop(); // entry |
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197 |
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198 } |
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199 |
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200 |
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201 // Create an unique key for state table node |
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202 const TUint16 CSenFilterStateMachine::GetStateKeyL(TInt aState, |
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203 const TDesC8& aEvent, |
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204 TInt aStart) |
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205 { |
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206 TUint16 ret = 0; |
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207 TInt intMaxLen = 32; |
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208 |
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209 TInt bufLen = aEvent.Size() + (2 * intMaxLen); |
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210 HBufC8* buf = HBufC8::NewLC(bufLen); |
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211 TPtr8 bufPtr = (buf->Des()); |
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212 bufPtr.Append(aEvent); |
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213 bufPtr.AppendNum(aState); |
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214 bufPtr.AppendNum(aStart); |
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215 |
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216 Mem::Crc(ret, (TAny *)bufPtr.Ptr(), bufPtr.Size()); |
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217 |
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218 CleanupStack::PopAndDestroy(); // buf |
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219 |
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220 return(ret); |
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221 } |
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222 |
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223 |
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224 const TInt CSenFilterStateMachine::TransitionL(TInt aState, |
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225 const TDesC8& aEvent, |
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226 TInt start, |
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227 const RAttributeArray& aAttributes) |
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228 { |
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229 |
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230 TUint16 c = GetStateKeyL(aState, aEvent, start); |
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231 TInt i = iStateTable.Find(c); |
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232 if ( KErrNotFound != i ) { |
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233 const CSenFilterTableEntry* entry = iStateTable.ValueAt(i); |
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234 if ( entry != NULL ) |
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235 { |
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236 // Evaluate conditions |
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237 if ( !entry->Condition().Test() ) |
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238 { |
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239 return iFilterState; |
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240 } |
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241 //Perform action |
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242 entry->Action().PerformL(aEvent, aAttributes); |
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243 |
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244 // Make the state transition |
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245 iFilterState = entry->NewState(); |
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246 } |
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247 } |
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248 return iFilterState; |
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249 } |
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250 |
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251 |
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252 RFileLogger* CSenFilterStateMachine::Log() const |
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253 { |
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254 return (RFileLogger*) &iLog; |
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255 } |
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256 |
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257 |
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258 // ------------------------------------- |
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259 // |
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260 // Implementation of class CSenFilterStateNode |
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261 // |
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262 // ------------------------------------- |
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263 |
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264 |
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265 EXPORT_C CSenFilterStateNode::CSenFilterStateNode(const TDesC8& aEvent, |
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266 const CSenFilterCondition& aCondition, |
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267 MSenFilterAction& aStartAction, |
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268 MSenFilterAction& aEndAction, |
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269 CSenFilterStateMachine& aStateMachine) |
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270 : ipPrev(NULL), |
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271 iEvent(aEvent), |
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272 iCondition(aCondition), |
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273 iStartAction(aStartAction), |
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274 iEndAction(aEndAction) |
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275 { |
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276 TLSLOG_OPEN(KSenXmlLogChannel, KSenXmlLogLevel, KSenXml, KSenXmlLog); |
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277 TLSLOG(KSenXmlLogChannel , KSenXmlLogLevel , _L8("CSenFilterStateNode::CSenFilterStateNode(): Log opened")); |
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278 |
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279 iState = aStateMachine.RegisterState(); |
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280 |
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281 TLSLOG(KSenXmlLogChannel , KSenXmlLogLevel , _L8("CSenFilterStateNode::CSenFilterStateNode(): End")); |
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282 } |
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283 |
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284 |
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285 EXPORT_C CSenFilterStateNode::CSenFilterStateNode(const CSenFilterStateNode& aFilterStateNode) |
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286 : ipPrev(NULL), |
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287 iEvent(aFilterStateNode.Event()), |
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288 iCondition(aFilterStateNode.Condition()), |
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289 iStartAction(aFilterStateNode.StartAction()), |
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290 iEndAction(aFilterStateNode.EndAction()) |
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291 { |
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292 TLSLOG_OPEN(KSenXmlLogChannel, KSenXmlLogLevel, KSenXml, KSenXmlLog); |
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293 TLSLOG(KSenXmlLogChannel , KSenXmlLogLevel , _L8("CSenFilterStateNode::CSenFilterStateNode(): Log opened")); |
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294 |
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295 iState = aFilterStateNode.State(); |
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296 |
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297 |
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298 if (NULL != aFilterStateNode.ipPrev) |
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299 { |
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300 ipPrev = new CSenFilterStateNode(aFilterStateNode.Parent()); |
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301 } |
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302 |
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303 for (TInt i = 0; i < aFilterStateNode.Children().Count(); i++) |
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304 { |
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305 iChildren.Append((const_cast<CSenFilterStateNode>(aFilterStateNode).Children())[i]); |
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306 } |
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307 |
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308 TLSLOG(KSenXmlLogChannel , KSenXmlLogLevel , _L8("CSenFilterStateNode::CSenFilterStateNode(): End")); |
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309 } |
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310 |
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311 |
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312 EXPORT_C CSenFilterStateNode::~CSenFilterStateNode() |
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313 { |
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314 iChildren.ResetAndDestroy(); |
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315 |
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316 // Close the log file and the connection to the server. |
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317 TLSLOG(KSenXmlLogChannel , KSenXmlLogLevel , _L("Log file closed.")); |
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318 TLSLOG_CLOSE(KSenXmlLogChannel); |
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319 } |
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320 |
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321 |
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322 EXPORT_C TInt CSenFilterStateNode::State() const |
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323 { |
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324 return iState; |
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325 } |
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326 |
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327 |
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328 EXPORT_C TDesC8 CSenFilterStateNode::Event() const |
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329 { |
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330 return iEvent; |
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331 } |
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332 |
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333 |
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334 EXPORT_C CSenFilterCondition CSenFilterStateNode::Condition() const |
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335 { |
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336 return iCondition; |
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337 } |
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338 |
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339 |
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340 EXPORT_C MSenFilterAction& CSenFilterStateNode::StartAction() const |
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341 { |
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342 return iStartAction; |
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343 } |
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344 |
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345 |
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346 EXPORT_C MSenFilterAction& CSenFilterStateNode::EndAction() const |
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347 { |
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348 return iEndAction; |
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349 } |
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350 |
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351 |
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352 EXPORT_C CSenFilterStateNode& CSenFilterStateNode::Parent() const |
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353 { |
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354 return *ipPrev; |
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355 } |
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356 |
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357 |
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358 EXPORT_C RStateNodeArray CSenFilterStateNode::Children() const |
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359 { |
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360 return iChildren; |
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361 } |
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362 |
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363 |
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364 EXPORT_C void CSenFilterStateNode::SetParent(CSenFilterStateNode& aNode) |
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365 { |
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366 ipPrev = &aNode; |
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367 } |
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368 |
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369 |
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370 RFileLogger* CSenFilterStateNode::Log() const |
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371 { |
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372 return (RFileLogger*) &iLog; |
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373 } |
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374 |
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375 |
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376 // -------------------------------------- |
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377 // |
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378 // Implementation of class CSenFilterTableEntry |
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379 // |
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380 // -------------------------------------- |
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381 |
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382 |
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383 CSenFilterTableEntry::CSenFilterTableEntry(TInt aNewState, |
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384 const CSenFilterCondition& aCondition, |
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385 MSenFilterAction& aAction) |
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386 : iAction(aAction), |
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387 iCondition(aCondition) |
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388 { |
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389 TLSLOG_OPEN(KSenXmlLogChannel, KSenXmlLogLevel, KSenXml, KSenXmlLog); |
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390 TLSLOG(KSenXmlLogChannel , KSenXmlLogLevel , _L8("CSenFilterTableEntry::CSenFilterTableEntry(): Log opened")); |
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391 |
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392 iNewState = aNewState; |
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393 |
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394 TLSLOG(KSenXmlLogChannel , KSenXmlLogLevel , _L8("CSenFilterTableEntry::CSenFilterTableEntry(): End")); |
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395 } |
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396 |
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397 |
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398 CSenFilterTableEntry::~CSenFilterTableEntry() |
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399 { |
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400 // Close the log file and the connection to the server. |
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401 TLSLOG(KSenXmlLogChannel , KSenXmlLogLevel , _L("Log file closed.")); |
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402 TLSLOG_CLOSE(KSenXmlLogChannel); |
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403 } |
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404 |
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405 |
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406 TInt CSenFilterTableEntry::NewState() const |
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407 { |
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408 return iNewState; |
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409 } |
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410 |
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411 |
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412 CSenFilterCondition CSenFilterTableEntry::Condition() const |
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413 { |
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414 return iCondition; |
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415 } |
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416 |
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417 |
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418 MSenFilterAction& CSenFilterTableEntry::Action() const |
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419 { |
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420 return iAction; |
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421 } |
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422 |
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423 |
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424 RFileLogger* CSenFilterTableEntry::Log() const |
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425 { |
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426 return (RFileLogger*) &iLog; |
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427 } |
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428 |
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429 |
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430 |