1 /* |
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2 * Copyright (c) 2006-2008 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 * The actual "engine". |
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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 // INCLUDE FILES |
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22 |
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23 |
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24 // SYSTEM INCLUDES |
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25 #include <mseng.rsg> |
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26 #include <bautils.h> |
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27 #include <driveinfo.h> |
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28 |
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29 // USER INCLUDES |
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30 #include "mseng.h" |
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31 #include "mseng.hrh" |
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32 #include "msengscanner.h" |
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33 |
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34 // ========================= MEMBER FUNCTIONS ================================ |
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35 |
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36 // --------------------------------------------------------------------------- |
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37 // CMseng::CMseng() |
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38 // |
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39 // C++ default constructor. Can NOT contain any code, that might leave. |
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40 // --------------------------------------------------------------------------- |
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41 |
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42 |
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43 |
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44 CMseng::CMseng( MMsengUIHandler& aUIHandler ) : |
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45 iUIHandler(aUIHandler), |
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46 iFreeMemory(0) |
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47 { |
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48 } |
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49 |
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50 // --------------------------------------------------------------------------- |
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51 // CMseng::NewL() |
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52 // |
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53 // Two-phased constructor. |
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54 // --------------------------------------------------------------------------- |
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55 |
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56 EXPORT_C CMseng* CMseng::NewL(MMsengUIHandler& aUIHandler) |
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57 { |
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58 CMseng* self = new (ELeave) CMseng(aUIHandler); |
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59 |
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60 CleanupStack::PushL( self ); |
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61 self->ConstructL(); |
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62 CleanupStack::Pop( self ); |
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63 |
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64 return self; |
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65 } |
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66 |
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67 // --------------------------------------------------------------------------- |
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68 // CMseng::ConstructL() |
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69 // |
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70 // Symbian OS default constructor can leave. |
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71 // --------------------------------------------------------------------------- |
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72 |
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73 void CMseng::ConstructL() |
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74 { |
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75 #ifdef __SHOW_RDEBUG_PRINT_ |
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76 RDebug::Print(_L("** CMseng::ConstructL()... starting **")); |
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77 #endif // __SHOW_RDEBUG_PRINT_ |
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78 |
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79 // Connect to File Server |
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80 User::LeaveIfError(iFsSession.Connect()); |
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81 |
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82 // Open the resource file |
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83 TParse* fp = new(ELeave) TParse(); |
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84 fp->Set(KMsengRscFilePath, &KDC_RESOURCE_FILES_DIR, NULL); |
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85 TFileName fileName( fp->FullName() ); |
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86 delete fp; |
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87 |
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88 |
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89 BaflUtils::NearestLanguageFile( iFsSession, fileName ); |
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90 // |
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91 TEntry entry; |
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92 User::LeaveIfError( iFsSession.Entry( fileName, entry ) ); |
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93 // if file does not exist, leaves with KErrNotFound |
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94 |
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95 iResFile = CResourceFile::NewL( iFsSession, fileName, 0, entry.FileSize() ); |
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96 |
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97 iResFile->ConfirmSignatureL(); |
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98 |
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99 |
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100 ///////////////////////////////////////////////////////// |
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101 //create data structures and initialize them from resource file |
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102 |
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103 TInt index = -1; // index used in for-loops |
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104 TInt subindex = -1; // index used in for-loops inside another for-loop |
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105 TInt length = -1; // length of resource array being read |
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106 TInt sublength = -1; // length of sub-array inside array resource |
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107 |
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108 RResourceReader theReader; |
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109 theReader.OpenLC( iResFile, DATAGROUPNAMEARRAY ); |
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110 |
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111 |
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112 //the first WORD contains the number of elements in the resource |
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113 iNumberOfDataGroups = theReader.ReadInt16L(); |
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114 |
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115 CleanupStack::PopAndDestroy( &theReader ); |
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116 |
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117 |
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118 |
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119 ///////////////////////////////////////////////////////// |
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120 // Read the resource containing the data needed to create |
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121 // mapping between data groups and UIDs |
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122 // |
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123 theReader.OpenLC( iResFile, DATAGROUPUIDARRAY ); |
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124 |
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125 //the first WORD contains the number of elements in the resource |
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126 length = theReader.ReadInt16L(); |
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127 |
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128 |
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129 // Create array with such granularity that reallocation is unnecessary |
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130 // initialize array to contain null pointers |
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131 iDataGroupUidArray = new (ELeave) CArrayPtrFlat<CIntArray>(iNumberOfDataGroups); |
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132 for(index=0; index<iNumberOfDataGroups; index++) |
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133 { |
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134 iDataGroupUidArray->AppendL(NULL); |
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135 } |
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136 TInt groupindex; // value from enum TDataGroups |
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137 // Read the array resource |
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138 for(index=0; index<length; index++) |
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139 { |
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140 // Read one enum TDataGroups value |
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141 groupindex = theReader.ReadInt8L(); |
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142 |
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143 // Read the sub-array. First WORD contains array length. |
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144 sublength = theReader.ReadInt16L(); |
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145 |
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146 // Create new CUidArray with appropriate granularity |
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147 // and insert it into the main array |
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148 CIntArray* subarray = new (ELeave) CIntArray(iNumberOfDataGroups); |
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149 CleanupStack::PushL(subarray); |
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150 if( groupindex < iDataGroupUidArray->Count() ) |
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151 { |
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152 iDataGroupUidArray->At(groupindex) = subarray; |
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153 } |
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154 |
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155 // Read the subarray resource |
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156 for(subindex=0; subindex<sublength; subindex++) |
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157 { |
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158 // uidtype matches one value fron enum TUidTypes |
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159 TInt uidtype = theReader.ReadInt8L(); |
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160 if( groupindex < iDataGroupUidArray->Count() ) |
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161 { |
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162 iDataGroupUidArray->At(groupindex)->InsertL(subindex,uidtype); |
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163 } |
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164 } |
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165 CleanupStack::Pop( subarray ); |
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166 } |
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167 CleanupStack::PopAndDestroy( &theReader ); |
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168 |
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169 ///////////////////////////////////////////////////////// |
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170 // Read the resource containing the data needed to create |
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171 // mapping between data groups and extensions |
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172 // |
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173 theReader.OpenLC( iResFile, DATAGROUPEXTARRAY ); |
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174 |
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175 //the first WORD contains the number of elements in the resource |
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176 length = theReader.ReadInt16L(); |
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177 // Create array with such granularity that reallocation is unnecessary |
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178 // Initialize it to contain null pointers, since some cells can leave empty |
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179 iDataGroupExtArray = new (ELeave) CArrayPtrFlat<CIntArray>(iNumberOfDataGroups); |
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180 for(index=0; index<iNumberOfDataGroups; index++) |
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181 { |
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182 iDataGroupExtArray->AppendL(NULL); |
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183 } |
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184 // Read the array resource |
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185 for(index=0; index<length; index++) |
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186 { |
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187 // Read one enum TDataGroups value |
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188 groupindex = theReader.ReadInt8L(); |
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189 // Read the sub-array. First WORD contains array length. |
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190 sublength = theReader.ReadInt16L(); |
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191 // Create new CIntArray with appropriate granularity |
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192 // and insert it into the main array |
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193 CIntArray* subarray = new (ELeave) CIntArray(sublength); |
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194 CleanupStack::PushL(subarray); |
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195 if( groupindex < iDataGroupExtArray->Count() ) |
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196 { |
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197 iDataGroupExtArray->At(groupindex) = subarray; |
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198 } |
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199 |
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200 // Read the subarray resource |
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201 for(subindex=0; subindex<sublength; subindex++) |
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202 { |
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203 // exttype matches one value fron enum TUidTypes |
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204 TInt exttype = theReader.ReadInt8L(); |
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205 if( groupindex < iDataGroupExtArray->Count() ) |
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206 { |
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207 iDataGroupExtArray->At(groupindex)->InsertL(subindex,exttype); |
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208 } |
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209 } |
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210 CleanupStack::Pop( subarray ); |
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211 } |
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212 |
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213 CleanupStack::PopAndDestroy( &theReader ); |
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214 |
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215 //instantiate scanner |
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216 iScanner = new (ELeave) CMsengScanner(iUIHandler, *iResFile); |
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217 } |
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218 |
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219 |
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220 // --------------------------------------------------------------------------- |
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221 // CMseng::~CMseng() |
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222 // |
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223 // Destructor. |
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224 // --------------------------------------------------------------------------- |
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225 |
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226 EXPORT_C CMseng::~CMseng() |
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227 { |
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228 #ifdef __SHOW_RDEBUG_PRINT_ |
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229 RDebug::Print(_L("** CMseng::~CMseng(). Finished. **")); |
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230 #endif // __SHOW_RDEBUG_PRINT_ |
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231 |
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232 delete iScanner; |
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233 |
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234 // Pointer arrays: elements must be deleted before deleting array |
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235 if(iDataGroupUidArray) |
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236 { |
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237 iDataGroupUidArray->ResetAndDestroy(); |
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238 } |
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239 delete iDataGroupUidArray; |
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240 |
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241 |
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242 if(iDataGroupExtArray) |
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243 { |
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244 iDataGroupExtArray->ResetAndDestroy(); |
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245 } |
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246 delete iDataGroupExtArray; |
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247 |
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248 |
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249 delete iResFile; |
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250 |
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251 iFsSession.Close(); |
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252 } |
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253 |
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254 |
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255 |
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256 // --------------------------------------------------------------------------- |
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257 // CMseng::DataGroupsL() |
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258 // |
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259 // Get a descriptor array containing the names of the data groups. |
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260 // --------------------------------------------------------------------------- |
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261 |
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262 EXPORT_C CDesCArray* CMseng::DataGroupsL() const |
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263 { |
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264 #ifdef __SHOW_RDEBUG_PRINT_ |
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265 RDebug::Print(_L("CMseng::GetDataGroupsL() called.")); |
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266 #endif // __SHOW_RDEBUG_PRINT_ |
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267 |
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268 |
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269 // Create the array for the data group names with appropriate granularity |
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270 CDesCArray* dataGroupNameArray = new (ELeave) CDesCArrayFlat(iNumberOfDataGroups); |
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271 CleanupStack::PushL(dataGroupNameArray); |
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272 |
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273 // Read the resource containing data group names |
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274 // and put them to resultArray |
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275 |
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276 RResourceReader theReader; |
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277 theReader.OpenLC( iResFile, DATAGROUPNAMEARRAY ); |
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278 |
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279 |
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280 // The first WORD contains the number of elements in the resource |
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281 // (actually this is already in iNumberOfDataGroups) |
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282 |
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283 TInt length = theReader.ReadInt16L(); |
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284 __ASSERT_DEBUG(iNumberOfDataGroups == length, User::Panic(_L("CMseng::DataGroupsL"), KErrGeneral)); |
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285 |
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286 // Read the data group names from resource file and insert to array |
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287 TInt groupindex; // value from enum TDataGroups |
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288 for(TInt index=0; index<length; index++) |
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289 { |
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290 groupindex = theReader.ReadInt8L(); |
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291 TPtrC name = theReader.ReadTPtrCL(); |
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292 // Copy the name to the right place in the array |
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293 dataGroupNameArray->InsertL(groupindex, name); |
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294 } |
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295 CleanupStack::PopAndDestroy( &theReader ); |
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296 |
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297 // Return the array of data groups |
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298 CleanupStack::Pop( dataGroupNameArray ); |
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299 |
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300 #ifdef __SHOW_RDEBUG_PRINT_ |
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301 // print the data group array |
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302 RDebug::Print(_L("Printing the Data Groups:")); |
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303 for(TInt k = 0; k < dataGroupNameArray->Count(); k++) |
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304 { |
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305 HBufC* groupName = dataGroupNameArray->MdcaPoint(k).AllocL(); |
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306 RDebug::Print( _L(" %d: %S"), k, groupName); |
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307 delete groupName; |
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308 } |
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309 #endif // __SHOW_RDEBUG_PRINT_ |
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310 |
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311 return dataGroupNameArray; |
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312 |
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313 } |
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314 |
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315 // --------------------------------------------------------------------------- |
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316 // CMseng::ScanResultL() |
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317 // |
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318 // Returns an array of scan results |
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319 // --------------------------------------------------------------------------- |
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320 |
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321 EXPORT_C CArrayFix<TInt64>* CMseng::ScanResultL() const |
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322 { |
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323 #ifdef __SHOW_RDEBUG_PRINT_ |
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324 RDebug::Print(_L("CMseng::ScanResultL() called. Starting to calculate result...")); |
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325 #endif // __SHOW_RDEBUG_PRINT_ |
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326 |
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327 // Create the result array (with such granularity that reallocations do not happen) |
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328 CArrayFix<TInt64>* resultArray = new (ELeave) CArrayFixFlat<TInt64>(iNumberOfDataGroups); |
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329 CleanupStack::PushL(resultArray); |
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330 |
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331 // Get result arrays from scanner |
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332 const CArrayFix<TInt64>* extResultArray = iScanner->ExtResults(); |
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333 const CArrayFix<TInt64>* uidResultArray = iScanner->UidResults(); |
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334 const CArrayFix<TInt64>* groupResultArray = iScanner->GroupResults(); |
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335 |
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336 // Initialize the result array from the array of initial result |
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337 for (TInt i = 0; i < iNumberOfDataGroups; i++) |
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338 { |
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339 if( i < groupResultArray->Count() ) |
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340 { |
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341 resultArray->AppendL(groupResultArray->At(i)); |
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342 } |
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343 } |
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344 |
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345 //Calculate the results and put them to the array |
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346 |
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347 // Find results for each data group |
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348 for(TInt groupindex = 0; groupindex < iNumberOfDataGroups; groupindex++) |
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349 { |
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350 // For one data group, the UIDs belonging to this group are listed in |
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351 // iDataGroupExtArray. For each of these UIDs, add the result to the total result. |
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352 |
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353 // If the examined data group does not have associated UIDs, |
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354 // iDataGroupUidArray->At(groupindex) is a NULL pointer. |
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355 if(iDataGroupUidArray->At(groupindex)) |
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356 { |
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357 TInt count = iDataGroupUidArray->At(groupindex)->Count(); |
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358 for(TInt uidindex = 0; uidindex < count; uidindex++) |
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359 { |
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360 resultArray->At(groupindex) += |
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361 uidResultArray->At( iDataGroupUidArray->At(groupindex)->At(uidindex) ); |
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362 } |
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363 } |
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364 |
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365 // The extension results are collected in a similar manner |
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366 |
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367 // If the examined data group does not have associated UIDs, |
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368 // iDataGroupUidArray->At(groupindex) is a NULL pointer |
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369 if(iDataGroupExtArray->At(groupindex)) |
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370 { |
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371 TInt count = iDataGroupExtArray->At(groupindex)->Count(); |
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372 for(TInt extindex = 0; extindex < count; extindex++) |
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373 { |
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374 resultArray->At(groupindex) += |
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375 extResultArray->At( iDataGroupExtArray->At(groupindex)->At(extindex) ); |
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376 } |
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377 } |
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378 } |
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379 // Calculate "Free memory" and "All device data" |
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380 TInt64 totalMemory; |
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381 TInt64 freeMemory; |
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382 DiskInfoL(totalMemory, freeMemory, iScanner->CurrentDrive()); |
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383 #ifdef __SHOW_RDEBUG_PRINT_ |
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384 RDebug::Print(_L("CMseng::ScanresultL(): iFreeMemory %d, freeMemory %d"), (TUint32)iFreeMemory, (TUint32)freeMemory); |
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385 #endif |
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386 // For some reason there is sometimes 16 kB difference in free memory when scanning started |
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387 // vs. scanning ended (16 kB more at the end of scanning) and latter one is incorrect. |
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388 // That is why free memory detected in the beginning of scanning taken into account. |
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389 if(iFreeMemory) |
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390 { |
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391 freeMemory = iFreeMemory; |
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392 } |
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393 else |
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394 { |
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395 iFreeMemory = freeMemory; |
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396 } |
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397 |
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398 // "Free memory" is the memory currently available |
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399 resultArray->At(EGroupFreeMemory) = freeMemory; |
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400 // "All Device Data" is all memory used |
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401 resultArray->At(EGroupAllDeviceData) = (totalMemory - freeMemory); |
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402 |
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403 // Calculate how much files not falling to any predefined category consume |
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404 TInt64 others( 0 ); |
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405 for( TInt i = EGroupCalendar; i < iNumberOfDataGroups; i++ ) |
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406 { |
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407 others += resultArray->At( i ); |
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408 } |
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409 |
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410 // This should never happen, but just in case check that negative count is not established. |
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411 if( resultArray->At(EGroupAllDeviceData) - others < 0 ) |
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412 { |
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413 resultArray->At( EGroupOthers ) = 0; |
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414 } |
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415 else |
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416 { |
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417 resultArray->At( EGroupOthers ) = resultArray->At(EGroupAllDeviceData) - others; |
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418 } |
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419 |
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420 // write the result array to log file |
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421 #ifdef __SHOW_RDEBUG_PRINT_ |
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422 RDebug::Print(_L("CMseng::ScanresultL(): current result array -")); |
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423 // note that the log macros cannot handle TInt64 |
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424 for(TInt k = 0; k < resultArray->Count(); k++) |
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425 { |
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426 const TInt KMaxChars = 32; |
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427 TBuf<KMaxChars> num; |
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428 num.Num(resultArray->At(k)); |
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429 RDebug::Print(num); |
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430 } |
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431 #endif // __SHOW_RDEBUG_PRINT_ |
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432 |
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433 CleanupStack::Pop( resultArray ); |
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434 return resultArray; |
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435 } |
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436 |
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437 // --------------------------------------------------------------------------- |
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438 // CMseng::ScanInProgress() |
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439 // |
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440 // Return ETrue if there is scanning going on, otherwise EFalse. |
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441 // --------------------------------------------------------------------------- |
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442 // |
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443 EXPORT_C TBool CMseng::ScanInProgress() const |
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444 { |
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445 if(iScanner) |
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446 { |
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447 return iScanner->HaveActiveScanners(); |
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448 } |
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449 else |
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450 { |
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451 return EFalse; |
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452 } |
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453 } |
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454 |
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455 // --------------------------------------------------------------------------- |
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456 // CMseng::DiskInfoL |
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457 // |
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458 // Retrieves information about disk usage. |
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459 // --------------------------------------------------------------------------- |
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460 // |
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461 EXPORT_C void CMseng::DiskInfoL(TInt64& aTotal, TInt64& aFree, const TDriveNumber aVolume) const |
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462 { |
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463 |
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464 TVolumeInfo vinfo; |
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465 User::LeaveIfError(iFsSession.Volume(vinfo, aVolume)); |
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466 aTotal = TInt64(vinfo.iSize); |
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467 aFree = TInt64(vinfo.iFree); |
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468 |
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469 } |
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470 |
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471 // --------------------------------------------------------------------------- |
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472 // CMseng::MemInfoL |
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473 // |
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474 // Retrieves information about RAM usage. |
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475 // --------------------------------------------------------------------------- |
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476 // |
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477 EXPORT_C void CMseng::MemInfoL(TInt64& aTotal, TInt64& aFree) |
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478 { |
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479 TMemoryInfoV1Buf membuf; |
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480 User::LeaveIfError(UserHal::MemoryInfo(membuf)); |
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481 TMemoryInfoV1 minfo = membuf(); |
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482 aTotal = minfo.iTotalRamInBytes; |
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483 aFree = minfo.iFreeRamInBytes; |
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484 } |
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485 |
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486 // --------------------------------------------------------------------------- |
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487 // CMseng::ScanL() |
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488 // |
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489 // First scan the specific data files. |
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490 // Then scan directories that are scanned for the |
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491 // size of all files. Then call scanner's ScanL. |
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492 // --------------------------------------------------------------------------- |
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493 // |
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494 EXPORT_C void CMseng::ScanL(TDriveNumber aDrive) |
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495 { |
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496 __ASSERT_ALWAYS( (CMseng::IsInternalDrive(iFsSession, aDrive) |
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497 || CMseng::IsRemovableDrive(iFsSession, aDrive)), User::Leave(KErrNotSupported) ); |
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498 |
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499 // Scanning started. |
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500 iUIHandler.StartL(); |
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501 |
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502 // Start scanning memory, check that not already doing it |
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503 TInt err = iScanner->ScanL(aDrive, iNumberOfDataGroups, iFsSession); |
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504 if(err != KErrNone) // can be only KErrNone or KErrInUse |
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505 { |
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506 iUIHandler.ErrorL(KErrInUse); |
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507 } |
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508 } |
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509 |
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510 // --------------------------------------------------------------------------- |
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511 // CMseng::Cancel() |
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512 // |
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513 // --------------------------------------------------------------------------- |
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514 // |
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515 EXPORT_C void CMseng::Cancel() |
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516 { |
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517 #ifdef __SHOW_RDEBUG_PRINT_ |
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518 RDebug::Print(_L("CMseng::Cancel() called. canceling scanning...")); |
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519 #endif // __SHOW_RDEBUG_PRINT_ |
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520 |
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521 iScanner->Cancel(); |
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522 } |
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523 |
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524 // ----------------------------------------------------------------------------- |
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525 // CMseng::IsInternalDrive |
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526 // ----------------------------------------------------------------------------- |
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527 // |
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528 TBool CMseng::IsInternalDrive( RFs& aFs, TInt aDrv ) |
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529 { |
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530 TDriveInfo drvInfo; |
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531 if ( aFs.Drive( drvInfo, aDrv ) == KErrNone ) |
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532 { |
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533 if ( !( drvInfo.iDriveAtt & KDriveAttInternal ) && |
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534 drvInfo.iDriveAtt & ( KDriveAttRemovable | KDriveAttRemote ) ) |
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535 { |
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536 return EFalse; |
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537 } |
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538 } |
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539 else |
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540 { |
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541 return EFalse; |
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542 } |
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543 return ETrue; |
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544 } |
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545 |
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546 // ----------------------------------------------------------------------------- |
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547 // CMseng::IsRemovableDrive |
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548 // ----------------------------------------------------------------------------- |
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549 // |
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550 TBool CMseng::IsRemovableDrive( RFs& aFs, TInt aDrv ) |
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551 { |
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552 TDriveInfo drvInfo; |
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553 if ( aFs.Drive( drvInfo, aDrv ) == KErrNone ) |
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554 { |
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555 if ( !( drvInfo.iDriveAtt & KDriveAttRemovable ) ) |
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556 { |
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557 return EFalse; |
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558 } |
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559 } |
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560 else |
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561 { |
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562 return EFalse; |
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563 } |
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564 return ETrue; |
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565 } |
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566 |
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567 // ----------------------------------------------------------------------------- |
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568 // CMseng::IsMassStorageDrive |
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569 // ----------------------------------------------------------------------------- |
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570 // |
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571 TBool CMseng::IsMassStorageDrive( RFs& aFs, TInt aDrv ) |
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572 { |
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573 |
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574 TUint drvStatus( 0 ); |
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575 TInt err( DriveInfo::GetDriveStatus( aFs, aDrv, drvStatus ) ); |
|
576 if ( err != KErrNone ) |
|
577 { |
|
578 return EFalse; |
|
579 } |
|
580 |
|
581 if ( ( drvStatus & DriveInfo::EDriveInternal ) && |
|
582 ( drvStatus & DriveInfo::EDriveExternallyMountable ) ) |
|
583 { |
|
584 return ETrue; |
|
585 } |
|
586 return EFalse; |
|
587 } |
|
588 |
|
589 // End of File |
|