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1 /* |
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2 * Copyright (c) 2000-2009 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: Event viewer |
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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 #include <e32base.h> |
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21 #include <f32file.h> |
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22 #include <barsc.h> |
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23 #include <barsread.h> |
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24 #include <vpnlogmessages.rsg> |
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25 #include <cmmanagerext.h> |
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26 #include <cmdestinationext.h> |
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27 #include <utf.h> |
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28 |
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29 #include "eventviewer.h" |
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30 #include "eventviewer2.h" |
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31 #include "log_eventviewer.h" |
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32 |
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33 ///////////////////////////////////////////// |
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34 // Method IDs |
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35 //////////////////////////////////////////// |
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36 #define KGetMostRecentEvent 0 |
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37 #define KGetNextEvent 1 |
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38 #define KGetPreviousEvent 2 |
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39 #define KGetEventUsingEventNumber 3 |
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40 |
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41 |
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42 ////////////////////////////////////////////////////////////// |
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43 // Create EventViewer object |
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44 ///////////////////////////////////////////////////////////// |
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45 EXPORT_C CEventViewer* CEventViewer::NewL() |
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46 { |
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47 CEventViewer *self = new (ELeave) CEventViewer(); |
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48 CleanupStack::PushL(self); |
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49 self->ConstructL(); |
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50 LOG(Log::Printf(_L("Constructing EventViewer\n"))); |
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51 CleanupStack::Pop(); // self |
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52 return self; |
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53 } |
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54 |
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55 ///////////////////////////////////////////////////////////// |
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56 // CEventViewer::CEventViewer() |
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57 // C++ default constructor |
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58 ///////////////////////////////////////////////////////////// |
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59 // |
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60 // CEventViewer::CEventViewer() : iEikonEnv(*iCoeEnv) |
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61 // { |
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62 // } |
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63 |
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64 ////////////////////////////////////////////////////////////// |
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65 // Phase 2 constructor |
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66 ///////////////////////////////////////////////////////////// |
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67 void CEventViewer::ConstructL() |
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68 { |
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69 TInt status = iFS.Connect(); |
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70 if (status != KErrNone) |
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71 { |
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72 LOG(Log::Printf(_L("iFS.Connect failed %d\n"), status)); |
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73 User::Leave(status); |
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74 } |
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75 |
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76 status = iEventMediator.Connect(); |
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77 if (status != KErrNone) |
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78 { |
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79 LOG(Log::Printf(_L("iEventMediator.Connect failed %d\n"), status)); |
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80 User::Leave(status); |
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81 } |
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82 |
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83 status = OpenLogFile(); // Open log file and read file header |
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84 if (status != KErrNone) |
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85 { |
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86 LOG(Log::Printf(_L("OpenLogFile failed %d\n"), status)); |
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87 User::Leave(status); |
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88 } |
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89 OpenResourceFileL(); |
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90 } |
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91 ////////////////////////////////////////////////////////////// |
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92 // Destructor |
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93 ///////////////////////////////////////////////////////////// |
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94 CEventViewer::~CEventViewer() |
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95 { |
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96 LOG(Log::Printf(_L("Destructing EventViewer\n"))); |
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97 |
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98 delete iLogFileBuf; |
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99 iLogFileBuf = 0; |
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100 CloseLogFile(); |
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101 delete iResultBuf; |
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102 iResultBuf = 0; |
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103 iResourceFile.Close(); |
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104 iFS.Close(); |
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105 iEventMediator.Close(); |
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106 } |
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107 |
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108 ////////////////////////////////////////////////////////////// |
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109 // OpenResourceFileL() |
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110 // Used in ConstructL to get resource file |
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111 ////////////////////////////////////////////////////////////// |
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112 // |
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113 void CEventViewer::OpenResourceFileL() |
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114 { |
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115 //RResourceFile resourceFile; |
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116 _LIT(KResourceFile, "\\resource\\vpnlogmessages.rsc"); |
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117 |
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118 TFileName resourceFileName(KResourceFile); |
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119 TFileName dllName; |
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120 Dll::FileName(dllName); |
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121 TBuf<2> drive = dllName.Left(2); |
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122 resourceFileName.Insert(0, drive); |
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123 iResourceFile.OpenL(iFS, resourceFileName); |
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124 iResourceFile.ConfirmSignatureL(); |
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125 } |
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126 |
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127 |
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128 ////////////////////////////////////////////////////////////// |
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129 // Release resources allocated for a call |
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130 ///////////////////////////////////////////////////////////// |
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131 //void CEventViewer::ReleaseResourcesL() |
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132 // { |
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133 |
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134 // } |
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135 |
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136 ////////////////////////////////////////////////////////////////// |
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137 // |
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138 // GetMostRecentEvent |
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139 // |
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140 ///////////////////////////////////////////////////////////////// |
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141 EXPORT_C TInt CEventViewer::GetMostRecentEvent( |
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142 HBufC*& aEventText, |
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143 TEventProperties& aEventProperties) |
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144 { |
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145 TInt status = GetRequestedEvent( |
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146 aEventText, |
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147 aEventProperties, |
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148 0, // Event number |
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149 KGetMostRecentEvent); |
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150 return status; |
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151 } |
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152 ////////////////////////////////////////////////////////////////// |
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153 // |
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154 // GetNextEvent |
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155 // |
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156 ///////////////////////////////////////////////////////////////// |
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157 EXPORT_C TInt CEventViewer::GetNextEvent( |
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158 HBufC*& aEventText, |
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159 TEventProperties& aEventProperties) |
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160 { |
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161 TInt status = GetRequestedEvent( |
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162 aEventText, |
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163 aEventProperties, |
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164 0, // Event number |
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165 KGetNextEvent); |
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166 return status; |
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167 } |
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168 |
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169 ////////////////////////////////////////////////////////////////// |
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170 // |
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171 // GetPrevousEvent |
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172 // |
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173 ///////////////////////////////////////////////////////////////// |
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174 EXPORT_C TInt CEventViewer::GetPreviousEvent( |
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175 HBufC*& aEventText, |
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176 TEventProperties& aEventProperties) |
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177 { |
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178 TInt status = GetRequestedEvent( |
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179 aEventText, |
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180 aEventProperties, |
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181 0, // Event number |
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182 KGetPreviousEvent); |
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183 return status; |
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184 } |
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185 |
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186 ////////////////////////////////////////////////////////////////// |
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187 // |
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188 // GetEventUsingEventNumber |
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189 // |
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190 ///////////////////////////////////////////////////////////////// |
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191 EXPORT_C TInt CEventViewer::GetEventUsingEventNumber( |
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192 HBufC*& aEventText, |
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193 TUint32 aEventNumber, |
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194 TEventProperties& aEventProperties) |
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195 { |
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196 TInt status = GetRequestedEvent( |
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197 aEventText, |
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198 aEventProperties, |
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199 aEventNumber, |
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200 KGetEventUsingEventNumber); |
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201 return status; |
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202 } |
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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 // GetRequestedEvent - Get Requested Event |
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208 // This is a common function for API calls. It searches the event |
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209 // that the API user has requested. The function returns a buffer |
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210 // containing the event text and TEventProperties structure that |
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211 // contains some parameters relating to the event. |
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212 // |
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213 ///////////////////////////////////////////////////////////////// |
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214 TInt CEventViewer::GetRequestedEvent( |
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215 HBufC*& aEventText, |
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216 TEventProperties& aEventProperties, |
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217 TUint32 aEventNumber, |
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218 TInt aMethodId) |
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219 { |
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220 TInt status = 0; |
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221 TRAPD (err, status = GetRequestedEventL( |
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222 aEventText, |
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223 aEventProperties, |
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224 aEventNumber, |
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225 aMethodId)) |
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226 |
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227 if (err != KErrNone) |
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228 { |
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229 LOG(Log::Printf(_L("API request failed, status %d\n"), err)); |
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230 |
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231 status = err; |
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232 } |
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233 return status; |
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234 } |
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235 |
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236 TInt CEventViewer::GetRequestedEventL( |
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237 HBufC*& aEventText, |
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238 TEventProperties& aEventProperties, |
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239 TUint32 aEventNumber, |
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240 TInt aMethodId) |
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241 { |
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242 TInt status; |
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243 LOG(Log::Printf(_L("API request received, method = %d\n"), aMethodId)); |
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244 |
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245 // |
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246 // Store the API parameters to this object |
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247 // |
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248 iEventText = &aEventText; |
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249 iEventProperties = &aEventProperties; |
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250 // |
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251 // Produce the event number that the user is requesting |
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252 // |
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253 |
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254 switch (aMethodId) |
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255 { |
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256 case KGetMostRecentEvent: |
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257 { |
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258 |
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259 // Read the log file to memory buffer if not yet done |
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260 |
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261 if (iLogFileBuf == 0) |
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262 { |
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263 |
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264 status = ReadWholeLogFileToMemoryBuffer(); |
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265 if (status != KErrNone) |
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266 { |
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267 break; |
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268 } |
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269 TakeCopyOfFileHeader(iCurrFileHeader, iPreviousFileHeader); |
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270 } |
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271 |
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272 // Check if the log file has been modified and read the log |
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273 // file header |
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274 |
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275 else |
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276 { |
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277 status = ReadLogFileHeader(); |
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278 if (status != KErrNone) |
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279 { |
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280 break; |
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281 } |
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282 if (IsLogFileModified()) |
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283 { |
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284 TakeCopyOfFileHeader(iCurrFileHeader, iPreviousFileHeader); |
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285 } |
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286 } |
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287 iRequestedEventNumber = iCurrFileHeader.iCurrEventNumber; |
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288 break; |
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289 } |
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290 |
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291 case KGetNextEvent: |
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292 { |
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293 iRequestedEventNumber++; |
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294 break; |
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295 } |
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296 case KGetPreviousEvent: |
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297 { |
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298 iRequestedEventNumber--; |
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299 break; |
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300 } |
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301 case KGetEventUsingEventNumber: |
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302 { |
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303 iRequestedEventNumber = aEventNumber; |
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304 break; |
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305 } |
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306 default: |
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307 { |
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308 break; |
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309 } |
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310 } |
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311 // |
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312 // Check the validity of requested event number |
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313 // |
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314 |
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315 if (iRequestedEventNumber == 0 || |
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316 iRequestedEventNumber > iCurrFileHeader.iCurrEventNumber || |
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317 iLogFileBuf == 0) // Logfile not yet in memory |
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318 { |
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319 LOG(Log::Printf(_L("API request completed, requested event not found \n"))); |
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320 return KErrNotFound; |
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321 } |
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322 // |
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323 // Search the event from the memory resident log file |
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324 // |
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325 status = EventLookup(iRequestedEventNumber); |
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326 if (status != KErrNone) |
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327 { |
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328 return status; // Event not found |
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329 } |
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330 // |
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331 // Event found, copy the packed format log element parameters to an |
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332 // unpacked object |
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333 // |
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334 |
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335 CopyPackedLogElemToUnpackedObject(iPositionOfCurrLogElem); |
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336 |
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337 // |
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338 // Search the event text relating to the MsgId |
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339 // |
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340 HBufC* eventTextBuf; |
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341 eventTextBuf = SearchEventTextL(iUnpackedLogElem.iMsgId); |
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342 if (eventTextBuf == 0) |
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343 { |
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344 return KErrNoMemory; |
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345 } |
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346 |
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347 // |
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348 // Modify the event text with the descriptor data |
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349 // DescrPtr points to a list of following elements: |
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350 // TInt DataLength |
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351 // TInt8 Data |
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352 // |
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353 |
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354 TUint32 descrDataPosition = iPositionOfCurrLogElem + LOG_ELEM_HEADER_LTH; |
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355 HBufC* modifiedEventTextBuf = ModifyEventText( |
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356 eventTextBuf, |
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357 iUnpackedLogElem.iDescrCount, // Count of descriptor elements |
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358 descrDataPosition); // Descriptors: lth,lth,...data,data... |
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359 if (modifiedEventTextBuf == 0) |
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360 { |
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361 return KErrNoMemory; |
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362 } |
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363 // |
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364 // An event is available, return data to the caller |
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365 // |
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366 *iEventText = modifiedEventTextBuf; |
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367 iResultBuf = 0; |
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368 iEventProperties->iEventNumber = iUnpackedLogElem.iEventNumber; |
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369 iEventProperties->iMsgId = iUnpackedLogElem.iMsgId; |
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370 TTime tmpTime(iUnpackedLogElem.iTimeStamp); |
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371 iEventProperties->iTimeStamp = tmpTime; |
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372 iEventProperties->iSourceComponent = iUnpackedLogElem.iSourceComponent; |
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373 iEventProperties->iCategory = iUnpackedLogElem.iCategory; |
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374 LOG(Log::Printf(_L("API request completed OK \n"))); |
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375 |
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376 return KErrNone; |
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377 |
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378 } |
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379 |
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380 |
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381 ////////////////////////////////////////////////////////////////////// |
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382 // EventLookup |
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383 // This function searches an event from the log file buffer that |
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384 // matches with the requested event number. |
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385 ////////////////////////////////////////////////////////////////////// |
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386 TInt CEventViewer::EventLookup(TUint32 aEventNumber) |
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387 { |
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388 TUint32 positionOfLogElemEnd = iCurrFileHeader.iPositionOfNextFree; |
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389 TUint32 positionOfLogElem; |
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390 TInt searchGoing = ETrue; |
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391 TInt status = KErrNone; |
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392 iWrappingOccured = EFalse; |
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393 // |
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394 // Loop here until matching event found or end of elements reached |
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395 // or any error found |
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396 // |
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397 |
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398 while (searchGoing && status == KErrNone) |
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399 { |
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400 // |
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401 // Check if wrapping 1 |
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402 // |
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403 if (positionOfLogElemEnd == EVENTLOG_FILE_HEADER_LTH) |
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404 { |
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405 |
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406 |
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407 if (iCurrFileHeader.iPositionOfWrapping != 0) |
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408 { |
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409 positionOfLogElemEnd = iCurrFileHeader.iPositionOfWrapping; // Wrapping occurs |
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410 iWrappingOccured = ETrue; |
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411 } |
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412 else |
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413 { |
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414 status = KErrNotFound; |
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415 continue; |
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416 } |
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417 } |
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418 |
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419 // |
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420 // Produce the start position of an event |
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421 // |
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422 |
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423 status = GetStartPositionOfLogElem( positionOfLogElemEnd, |
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424 &positionOfLogElem); |
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425 if (status != KErrNone) |
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426 { |
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427 continue; |
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428 } |
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429 |
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430 // |
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431 // Check if requested event has been found |
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432 // |
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433 |
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434 if (iUnpackedLogElem.iEventNumber != aEventNumber) |
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435 { |
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436 positionOfLogElemEnd = positionOfLogElem; |
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437 continue; // Not found, continue |
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438 } |
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439 // |
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440 // Requested event found, stop the loop |
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441 // |
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442 status = KErrNone; |
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443 iPositionOfCurrLogElem = positionOfLogElem; |
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444 searchGoing = EFalse; |
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445 |
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446 } |
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447 |
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448 return status; |
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449 } |
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450 |
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451 |
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452 ///////////////////////////////////////////////////////////////////// |
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453 // SearchEventText |
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454 // This function searches from the localization file the text string |
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455 // relating to the MsgId parameter and allocates an buffer in which |
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456 // it returns the data to the caller. |
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457 // |
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458 ///////////////////////////////////////////////////////////////////// |
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459 |
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460 HBufC* CEventViewer::SearchEventTextL( TUint32 aMsgId) |
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461 { |
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462 HBufC8* resourceBuf = NULL; |
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463 HBufC* textDataBuf = NULL; |
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464 |
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465 // |
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466 // MsgId is a code defined in epoc32\include\eventviewererr.rsg |
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467 // file. It refers to a message in .rsc file. |
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468 // |
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469 TInt msgNumber = STATIC_CAST(TInt, aMsgId); |
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470 resourceBuf = iResourceFile.AllocReadL( msgNumber); |
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471 |
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472 TResourceReader resourceReader; |
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473 |
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474 resourceReader.SetBuffer(resourceBuf); |
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475 |
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476 textDataBuf = HBufC::New(resourceBuf->Length()); |
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477 if (textDataBuf) |
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478 { |
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479 TPtr textDataPtr(textDataBuf->Des()); |
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480 |
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481 resourceReader.Read((void*)textDataBuf->Ptr(), resourceBuf->Length()); |
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482 textDataPtr.SetLength(resourceBuf->Length()/2); |
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483 } |
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484 |
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485 delete resourceBuf; |
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486 return textDataBuf; |
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487 } |
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488 |
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489 ///////////////////////////////////////////////////////////////////// |
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490 // ModifyEventText |
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491 // This function modifies the event text by the descriptors. |
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492 // Both the event text and descriptors are parameters of the |
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493 // function. |
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494 // |
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495 ///////////////////////////////////////////////////////////////////// |
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496 |
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497 HBufC* CEventViewer::ModifyEventText( |
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498 HBufC* aEventTextSrc, |
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499 TUint32 aDescrCount, // Count of descriptor elements |
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500 TUint32 aDescrDataPosition) // Descriptors: lth data lth data.... |
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501 { |
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502 HBufC* modifiedEventText; |
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503 |
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504 // |
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505 // If descriptors exist, build pointer to the first |
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506 // length definition. The format of descriptor data |
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507 // is as follows: |
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508 // -- TUInt32 Length of parameter 1 (lth1) |
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509 // -- TUInt32 Length of parameter 2 (lth2) |
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510 // -- TUInt32 Length of parameter n (lthx) |
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511 // -- TInt8[lth1] Data 1 |
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512 // -- TInt8[lth2] Data 2 |
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513 // -- TInt8[lthx] Data n |
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514 // Variable length data, The format of |
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515 // data is defined by the conversion |
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516 // specification characters in the text string |
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517 // |
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518 |
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519 // |
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520 // No descriptors, return localisation data buffer |
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521 // |
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522 if (aDescrCount == 0) |
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523 { |
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524 return aEventTextSrc; |
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525 } |
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526 |
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527 // |
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528 // Build TPtr8 pointer for descriptor list |
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529 // |
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530 |
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531 TInt descrLth = iUnpackedLogElem.iEventLength - |
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532 LOG_ELEM_HEADER_LTH - |
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533 LOG_ELEM_TRAILER_LTH; |
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534 TPtr8 logFileBuf (iLogFileBuf->Des()); // Log file in memory |
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535 TPtr8 descrListPtr (const_cast<TUint8*>(logFileBuf.Ptr())+ aDescrDataPosition, // Data ptr |
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536 descrLth, // Data length |
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537 descrLth); // Max length |
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538 // |
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539 // Modify the localisation data buffer with the descriptor data |
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540 // |
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541 modifiedEventText = FormatEvent( |
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542 aDescrCount, |
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543 descrListPtr, |
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544 aEventTextSrc->Des()); |
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545 |
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546 |
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547 delete aEventTextSrc; |
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548 return modifiedEventText; |
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549 } |
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550 |
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551 |
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552 ///////////////////////////////////////////////////////////////////// |
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553 // GetIapName |
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554 // These functions are used to convert an IAP ID to IAP name. |
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555 // |
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556 //////////////////////////////////////////////////////////////////// |
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557 EXPORT_C TInt EventViewer::GetIapName(TUint32 aIapId, TIapName& aIapName) |
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558 { |
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559 TRAPD(err, DoGetIapNameL(aIapId, aIapName)); |
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560 return err; |
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561 } |
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562 |
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563 EXPORT_C TInt EventViewer::GetSnapName(TUint32 aSnapId, TIapName& aSnapName) |
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564 { |
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565 TRAPD(err, DoGetSnapNameL(aSnapId, aSnapName)); |
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566 return err; |
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567 } |
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568 |
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569 EXPORT_C TInt EventViewer::GetIapNames(TUint32 aIapId1, TIapName& aIapName1, |
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570 TUint32 aIapId2, TIapName& aIapName2) |
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571 { |
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572 TRAPD(err, DoGetIapNamesL(aIapId1, aIapName1, aIapId2, aIapName2)); |
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573 return err; |
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574 } |
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575 |
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576 void EventViewer::DoGetIapNameL(TUint32 aIapId, TIapName& aIapName) |
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577 { |
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578 using namespace CMManager; |
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579 |
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580 RCmManagerExt cmManagerExt; |
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581 cmManagerExt.OpenL(); |
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582 CleanupClosePushL(cmManagerExt); |
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583 |
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584 RCmConnectionMethodExt connectionMethod = cmManagerExt.ConnectionMethodL( aIapId ); |
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585 CleanupClosePushL(connectionMethod); |
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586 |
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587 HBufC* cmName = connectionMethod.GetStringAttributeL(ECmName); // Ownership passed |
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588 |
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589 aIapName.Copy(*cmName); |
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590 delete cmName; |
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591 cmName = NULL; |
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592 |
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593 CleanupStack::PopAndDestroy(&connectionMethod); |
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594 CleanupStack::PopAndDestroy(&cmManagerExt); |
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595 } |
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596 |
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597 void EventViewer::DoGetIapNamesL(TUint32 aIapId1, TIapName& aIapName1, |
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598 TUint32 aIapId2, TIapName& aIapName2) |
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599 { |
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600 using namespace CMManager; |
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601 |
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602 RCmManagerExt cmManagerExt; |
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603 cmManagerExt.OpenL(); |
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604 CleanupClosePushL(cmManagerExt); |
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605 |
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606 RCmConnectionMethodExt connectionMethod1 = cmManagerExt.ConnectionMethodL( aIapId1 ); |
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607 CleanupClosePushL(connectionMethod1); |
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608 |
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609 HBufC* cmName1 = connectionMethod1.GetStringAttributeL(ECmName); |
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610 CleanupStack::PushL(cmName1); |
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611 |
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612 aIapName1.Copy(*cmName1); |
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613 |
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614 RCmConnectionMethodExt connectionMethod2 = cmManagerExt.ConnectionMethodL( aIapId2 ); |
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615 CleanupClosePushL(connectionMethod2); |
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616 |
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617 HBufC* cmName2 = connectionMethod2.GetStringAttributeL(ECmName); // Ownership passed |
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618 |
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619 aIapName2.Copy(*cmName2); |
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620 |
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621 delete cmName2; |
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622 cmName2 = NULL; |
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623 CleanupStack::PopAndDestroy(4); |
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624 } |
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625 |
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626 |
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627 void EventViewer::DoGetSnapNameL(TUint32 aSnapId, TIapName& aSnapName) |
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628 { |
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629 RCmManagerExt cmManagerExt; |
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630 cmManagerExt.OpenL(); |
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631 CleanupClosePushL(cmManagerExt); |
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632 |
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633 RCmDestinationExt destination = cmManagerExt.DestinationL( aSnapId ); |
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634 CleanupClosePushL(destination); |
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635 |
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636 HBufC* snapName16bit = destination.NameLC(); |
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637 CnvUtfConverter::ConvertFromUnicodeToUtf8(aSnapName, *snapName16bit); |
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638 CleanupStack::PopAndDestroy(snapName16bit); |
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639 |
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640 CleanupStack::PopAndDestroy(); //destination |
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641 CleanupStack::PopAndDestroy(); //cmManagerExt |
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642 } |
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643 |
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644 ///////////////////////////////////////////////////////////////////// |
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645 // DeleteLogFile |
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646 // This function deletes the eventlog.bin file |
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647 // |
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648 //////////////////////////////////////////////////////////////////// |
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649 EXPORT_C TInt CEventViewer::DeleteLogFile() |
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650 { |
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651 TRAPD(err, DoDeleteLogFileL()); |
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652 return err; |
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653 } |