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1 // Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // Classes for synchronous and asynchronous file recognitions (of a directory) |
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15 // |
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16 // apsrecutil.cpp |
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17 // |
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18 |
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19 |
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20 #include "APSRECUTIL.H" |
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21 #include "APSRECCACHE.h" |
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22 |
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23 // |
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24 // CRecognitionResult |
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25 // |
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26 |
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27 CRecognitionResult* CRecognitionResult::NewL(const TDesC& aFileName, const TDataRecognitionResult& aRecognitionResult) |
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28 { |
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29 ASSERT(aFileName.Find(_L("\\")) == KErrNotFound); // the filename should not contain any path |
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30 |
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31 HBufC* fileName = aFileName.AllocLC(); |
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32 HBufC8* dataType = aRecognitionResult.iDataType.Des8().AllocLC(); |
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33 CRecognitionResult* self = new(ELeave) CRecognitionResult(fileName, dataType, aRecognitionResult.iDataType.Uid(), aRecognitionResult.iConfidence); |
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34 CleanupStack::Pop(2, fileName); |
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35 return self; |
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36 } |
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37 |
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38 CRecognitionResult::CRecognitionResult(HBufC* aFileName, HBufC8* aDataType, TUid aUid, TInt aConfidence) |
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39 : iFileName(aFileName), |
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40 iDataType(aDataType), |
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41 iUid(aUid), |
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42 iConfidence(aConfidence) |
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43 { |
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44 } |
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45 |
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46 CRecognitionResult::~CRecognitionResult() |
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47 { |
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48 delete iFileName; |
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49 delete iDataType; |
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50 } |
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51 |
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52 void CRecognitionResult::Get(TDataRecognitionResult& aRecognitionResult) |
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53 { |
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54 if(iUid == KNullUid) |
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55 aRecognitionResult.iDataType = TDataType(*iDataType); |
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56 else |
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57 aRecognitionResult.iDataType = TDataType(iUid); |
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58 |
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59 aRecognitionResult.iConfidence = iConfidence; |
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60 } |
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61 |
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62 |
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63 |
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64 TUint CRecognitionResult::GetRequiredBufferSize() const |
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65 { |
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66 return iFileName->Size() + iDataType->Size() + sizeof(TUid) + sizeof(TInt) + 2; |
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67 } |
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68 |
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69 void CRecognitionResult::WriteToStreamL(RWriteStream& aWriteStream) |
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70 { |
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71 aWriteStream.WriteUint8L(iFileName->Length()); |
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72 aWriteStream.WriteL(*iFileName); |
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73 aWriteStream.WriteUint8L(iDataType->Length()); |
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74 aWriteStream.WriteL(*iDataType); |
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75 aWriteStream.WriteInt32L(iUid.iUid); |
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76 aWriteStream.WriteInt32L(iConfidence); |
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77 } |
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78 |
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79 // |
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80 // CDirectoryRecognitionResult |
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81 // |
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82 |
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83 CDirectoryRecognitionResult::CDirectoryRecognitionResult(HBufC* aPath, HBufC8* aDataTypeFilter) |
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84 : iPath(aPath), iDataTypeFilter(aDataTypeFilter) |
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85 { |
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86 iRequiredBufferSize = sizeof(TUint); |
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87 } |
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88 |
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89 CDirectoryRecognitionResult::~CDirectoryRecognitionResult() |
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90 { |
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91 delete iPath; |
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92 delete iDataTypeFilter; |
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93 |
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94 const TInt count = iEntries.Count(); |
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95 for(TInt i = 0; i < count; i++) |
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96 iEntries[i]->Close(); |
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97 |
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98 iEntries.Reset(); |
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99 } |
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100 |
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101 void CDirectoryRecognitionResult::AppendL(CRecognitionResult* aEntry) |
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102 { |
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103 if(iDataTypeFilter) |
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104 { |
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105 if(aEntry->DataType().Match(*iDataTypeFilter) == KErrNotFound) |
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106 { |
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107 aEntry->Close(); //if we don't take ownership we must decrease reference count |
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108 return; |
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109 } |
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110 } |
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111 |
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112 iEntries.AppendL(aEntry); |
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113 iRequiredBufferSize += aEntry->GetRequiredBufferSize(); |
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114 } //lint !e818: Pointer parameter could be declared as pointing to const |
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115 |
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116 void CDirectoryRecognitionResult::WriteToStreamL(RWriteStream& aWriteStream) |
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117 { |
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118 aWriteStream.WriteUint32L(iEntries.Count()); |
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119 for (TInt i=0; i < iEntries.Count(); i++) |
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120 iEntries[i]->WriteToStreamL(aWriteStream); |
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121 |
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122 aWriteStream.CommitL(); |
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123 } |
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124 |
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125 // |
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126 // CFileRecognitionUtility |
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127 // |
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128 |
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129 CFileRecognitionUtility::CFileRecognitionUtility(CApaAppArcServer& aServer, TInt aMaxBufSize, RFs& aFs) |
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130 : CActive(0), |
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131 iServer(aServer), |
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132 iMaxBufSize(aMaxBufSize), |
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133 iFs(aFs), |
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134 iIndex(0), |
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135 iStep(0) |
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136 { |
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137 CActiveScheduler::Add(this); |
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138 } |
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139 |
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140 CFileRecognitionUtility::~CFileRecognitionUtility() |
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141 { |
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142 Cancel(); |
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143 delete iEntryList; |
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144 |
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145 iPath = NULL; |
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146 iResult = NULL; |
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147 } |
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148 |
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149 void CFileRecognitionUtility::RecognizeSynchronouslyL(CDirectoryRecognitionResult& aResult) |
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150 { |
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151 iPath = &(aResult.Path()); |
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152 iResult = &aResult; |
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153 |
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154 User::LeaveIfError(iFs.IsValidName(iPath->Des())); |
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155 |
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156 ReadDirectoryL(); |
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157 |
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158 // recognize files and calculate size of buffer |
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159 for(iIndex=0;iIndex<iEntryList->Count();iIndex++) |
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160 RecognizeFileL(); |
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161 |
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162 delete iEntryList; |
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163 iEntryList = NULL; |
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164 } |
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165 |
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166 void CFileRecognitionUtility::RecognizeAsynchronously(CDirectoryRecognitionResult& aResult, const RMessage2& aMessage) |
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167 { |
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168 iIndex = 0; |
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169 iStep = 0; |
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170 iPath = &(aResult.Path()); |
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171 iResult = &aResult; |
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172 iMessage = aMessage; |
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173 |
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174 NextStep(); |
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175 } |
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176 |
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177 void CFileRecognitionUtility::ReadDirectoryL() |
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178 { |
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179 delete iEntryList; |
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180 iEntryList = NULL; |
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181 |
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182 // read directory content |
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183 User::LeaveIfError(iFs.GetDir(iPath->Des(),KEntryAttNormal,EDirsAnyOrder,iEntryList)); |
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184 } |
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185 |
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186 TInt CFileRecognitionUtility::BufferSizeL() const |
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187 { |
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188 const TInt preferredBufferSize = iServer.DataRecognizerPreferredBufSizeL(); |
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189 TInt bufSize = Min(preferredBufferSize,iMaxBufSize); |
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190 if (bufSize < 1) |
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191 bufSize = 8; // sensible minimum. |
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192 |
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193 return bufSize; |
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194 } |
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195 |
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196 void CFileRecognitionUtility::RecognizeFileL() |
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197 { |
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198 TFileName fullFileName(*iPath); |
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199 fullFileName.Append((*iEntryList)[iIndex].iName); |
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200 RFile file; |
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201 User::LeaveIfError(file.Open(iFs, fullFileName, EFileRead | EFileShareReadersOnly)); |
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202 CleanupClosePushL(file); |
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203 |
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204 CRecognitionResult* result = NULL; |
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205 TRAP_IGNORE(result = iServer.RecognizeDataAsCRecognitionResultL(file, BufferSizeL())); |
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206 if(result) |
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207 { |
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208 CleanupClosePushL(*result); |
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209 iResult->AppendL(result); |
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210 CleanupStack::Pop(result); |
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211 } |
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212 |
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213 CleanupStack::PopAndDestroy(&file); |
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214 } |
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215 |
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216 void CFileRecognitionUtility::CancelRecognitionRequest() |
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217 { |
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218 if(iStep <= 1) |
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219 { |
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220 Cancel(); |
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221 iMessage.Complete(KErrCancel); |
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222 } |
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223 } |
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224 |
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225 void CFileRecognitionUtility::NextStep() |
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226 { |
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227 TRequestStatus* pStatus = &iStatus; |
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228 User::RequestComplete(pStatus, KErrNone); |
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229 SetActive(); |
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230 } |
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231 |
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232 void CFileRecognitionUtility::RunL() |
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233 { |
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234 switch(iStep) |
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235 { |
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236 case 0: // first step: read the directory content |
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237 ReadDirectoryL(); |
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238 iIndex=0; |
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239 iStep++; |
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240 NextStep(); |
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241 break; |
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242 case 1: // read current file and recognize it |
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243 if(iIndex < iEntryList->Count()) |
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244 { |
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245 RecognizeFileL(); |
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246 iIndex++; |
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247 NextStep(); |
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248 } |
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249 else // finished |
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250 { |
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251 iMessage.WriteL(1,TPckgBuf<TUint>(iResult->RequiredBufferSize())); |
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252 iMessage.Complete(KErrNone); |
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253 iStep++; // to show that we have completed the request |
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254 delete iEntryList; |
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255 iEntryList = NULL; |
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256 } |
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257 break; |
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258 default: |
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259 break; |
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260 } |
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261 } |
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262 |
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263 void CFileRecognitionUtility::DoCancel() |
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264 { |
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265 iIndex = 0; |
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266 iStep = 0; |
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267 } |
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268 |