author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 02 Sep 2010 20:17:46 +0300 | |
changeset 15 | 065198191975 |
parent 14 | 896e9dbc5f19 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: ?Description |
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* |
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*/ |
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#include <implementationproxy.h> |
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#include <f32file.h> |
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#include "irdebug.h" |
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#include "irrecognizer.h" |
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// CONSTANTS |
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// If the file name length > 4, the file extension might be valid |
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const TInt KPlsFileExtensionsMightBeValid = 4; |
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const TInt KM3uFileExtensionsMightBeValid = 4; |
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//extension of File to be recognised. |
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_LIT(KPlsExtension, ".pls"); |
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//Mime type of the .pls file |
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_LIT8(KPlsMimeType,"audio/x-scpls"); |
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_LIT(KM3uExtension, ".m3u"); |
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// ================= MEMBER FUNCTIONS ======================= |
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// --------------------------------------------------------------------------- |
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// RecognizerEx::RecognizerEx() |
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// constructs the object |
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// --------------------------------------------------------------------------- |
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// |
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CApaRecognizerEx::CApaRecognizerEx():CApaDataRecognizerType(KIRRecognizerDllUid, |
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CApaDataRecognizerType::EHigh) |
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{ |
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IRLOG_DEBUG( "CApaRecognizerEx::CApaRecognizerEx()" ); |
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// It only supports 1 mime type |
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iCountDataTypes = 1; |
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IRLOG_DEBUG( "CApaRecognizerEx::CApaRecognizerEx() - Exiting." ); |
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} |
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// --------------------------------------------------------------------------- |
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// RecognizerEx::~RecognizerEx() |
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// Destroys the object |
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// --------------------------------------------------------------------------- |
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// |
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CApaRecognizerEx::~CApaRecognizerEx() |
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{ |
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IRLOG_DEBUG( "CApaRecognizerEx::~CApaRecognizerEx" ); |
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// no implementation |
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} |
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// --------------------------------------------------------------------------- |
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// RecognizerEx::CreateRecognizerL() |
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// Returns pointer to the new object |
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// --------------------------------------------------------------------------- |
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// |
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CApaDataRecognizerType* CApaRecognizerEx::CreateRecognizerL() |
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{ |
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IRLOG_DEBUG( "CApaRecognizerEx::CreateRecognizerL" ); |
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return new (ELeave) CApaRecognizerEx(); |
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} |
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// --------------------------------------------------------------------------- |
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// RecognizerEx::PreferredBufSize() |
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// Returns preferred buffer size |
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// --------------------------------------------------------------------------- |
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// |
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TUint CApaRecognizerEx::PreferredBufSize() |
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{ |
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IRLOG_DEBUG( "CApaRecognizerEx::PreferredBufSize" ); |
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return 0; |
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} |
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// --------------------------------------------------------------------------- |
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// RecognizerEx::SupportedDataTypeL() |
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// Returns supported mime type |
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// --------------------------------------------------------------------------- |
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// |
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TDataType CApaRecognizerEx::SupportedDataTypeL(TInt aIndex) const |
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{ |
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IRLOG_DEBUG( "CApaRecognizerEx::SupportedDataTypeL" ); |
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if (0 == aIndex) |
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{ |
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return TDataType(KPlsMimeType); |
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} |
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else |
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{ |
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ASSERT(0); |
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return TDataType(KNullDesC8); |
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|
106 |
} |
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|
107 |
} |
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|
108 |
|
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|
109 |
// --------------------------------------------------------------------------- |
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|
110 |
// RecognizerEx::DoRecognizeL() |
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|
111 |
// Recognizes the file by name and/or head buffer |
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|
112 |
// --------------------------------------------------------------------------- |
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|
113 |
// |
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|
114 |
void CApaRecognizerEx::DoRecognizeL(const TDesC& aName, |
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115 |
const TDesC8& aBuffer) |
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|
116 |
{ |
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|
117 |
IRLOG_DEBUG( "CApaRecognizerEx::DoRecognizeL" ); |
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|
118 |
// To keep code simple, we only check file name extension |
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119 |
TInt len = aBuffer.Length(); |
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120 |
if (aName.Length()>KPlsFileExtensionsMightBeValid) |
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|
121 |
{ |
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122 |
//Compare the extension of the file to be recognised with .pls |
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|
123 |
if (aName.Right(KPlsFileExtensionsMightBeValid).CompareF( |
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|
124 |
KPlsExtension)==0) |
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|
125 |
{ |
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126 |
iConfidence=ECertain; // is certainly something totally new |
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127 |
iDataType=TDataType(KPlsMimeType); |
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|
128 |
IRLOG_DEBUG( "CApaRecognizerEx::DoRecognizeL - Exiting (1)." ); |
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129 |
return; |
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|
130 |
} |
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|
131 |
else if (aName.Right(KM3uFileExtensionsMightBeValid).CompareF( |
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|
132 |
KM3uExtension)==0) |
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|
133 |
{ |
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|
134 |
RecognizeM3uFileL(aName); |
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|
135 |
IRLOG_DEBUG( "CApaRecognizerEx::DoRecognizeL - Exiting (2)." ); |
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|
136 |
return; |
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|
137 |
} |
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|
138 |
IRLOG_DEBUG( "CApaRecognizerEx::DoRecognizeL - Exiting (3)." ); |
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|
139 |
} |
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|
140 |
} |
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|
141 |
|
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|
142 |
void CApaRecognizerEx::RecognizeM3uFileL(const TDesC& aFileName) |
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|
143 |
{ |
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|
144 |
_LIT8(KHttpProtocol, "http"); |
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|
145 |
_LIT8(KMmsProtocol, "mms"); |
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|
146 |
_LIT8(KRtspProtocol, "rtsp"); |
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|
147 |
|
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|
148 |
RFs fs; |
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|
149 |
User::LeaveIfError(fs.Connect()); |
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|
150 |
RFile file; |
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|
151 |
TInt ret = file.Open(fs, aFileName, EFileRead); |
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Revision: 201031
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|
152 |
if (KErrNone != ret) |
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|
153 |
{ |
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|
154 |
fs.Close(); |
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|
155 |
return; |
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|
156 |
} |
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|
157 |
|
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Revision: 201031
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|
158 |
RBuf8 content; |
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Revision: 201031
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|
159 |
CleanupClosePushL(content); |
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|
160 |
TInt maxLen = 0; |
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Revision: 201031
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|
161 |
file.Size(maxLen); |
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Revision: 201031
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|
162 |
content.CreateL(maxLen); |
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Revision: 201031
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|
163 |
file.Read(content); |
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|
164 |
|
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Revision: 201031
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|
165 |
//try to use descriptor method to parse the buffer |
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Revision: 201031
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|
166 |
if (CheckStreamingLinksL(content, KHttpProtocol) || |
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Revision: 201031
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|
167 |
CheckStreamingLinksL(content, KMmsProtocol) || |
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|
168 |
CheckStreamingLinksL(content, KRtspProtocol)) |
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|
169 |
{ |
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Revision: 201031
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|
170 |
iConfidence = ECertain; |
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Revision: 201031
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|
171 |
iDataType = TDataType(KPlsMimeType); |
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Revision: 201031
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|
172 |
} |
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|
173 |
|
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Revision: 201031
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|
174 |
CleanupStack::PopAndDestroy(); |
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Revision: 201031
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|
175 |
file.Close(); |
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Revision: 201031
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|
176 |
fs.Close(); |
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|
177 |
} |
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|
178 |
|
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|
179 |
TBool CApaRecognizerEx::CheckStreamingLinksL(TDes8& aBuffer, const TDesC8& aProtocol) |
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|
180 |
{ |
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Revision: 201031
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|
181 |
TBool ret = EFalse; |
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Revision: 201031
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|
182 |
_LIT8(KNewLine, "\n"); |
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Revision: 201031
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diff
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|
183 |
|
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Revision: 201031
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|
184 |
//initially, remain points to aBuffer |
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Revision: 201031
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|
185 |
TPtrC8 remain(aBuffer); |
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Revision: 201031
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parents:
diff
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|
186 |
TInt newLinePos = remain.Find(KNewLine); |
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Revision: 201031
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parents:
diff
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|
187 |
|
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Revision: 201031
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parents:
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|
188 |
while (KErrNotFound != newLinePos) |
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Revision: 201031
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diff
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|
189 |
{ |
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Revision: 201031
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|
190 |
//copy a new line to RBuf8 |
896e9dbc5f19
Revision: 201031
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
191 |
RBuf8 left; |
896e9dbc5f19
Revision: 201031
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|
192 |
CleanupClosePushL(left); |
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Revision: 201031
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diff
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|
193 |
left.CreateL(remain.Left(newLinePos)); |
896e9dbc5f19
Revision: 201031
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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diff
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|
194 |
left.TrimLeft(); |
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Revision: 201031
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diff
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|
195 |
left.LowerCase(); |
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Revision: 201031
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diff
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|
196 |
|
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Revision: 201031
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parents:
diff
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|
197 |
//after trim left, does this line start with aProtocol? |
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Revision: 201031
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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|
198 |
if (left.Left(aProtocol.Length()) == aProtocol) |
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Revision: 201031
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parents:
diff
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|
199 |
{ |
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Revision: 201031
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diff
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|
200 |
ret = ETrue; |
896e9dbc5f19
Revision: 201031
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parents:
diff
changeset
|
201 |
} |
896e9dbc5f19
Revision: 201031
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parents:
diff
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|
202 |
CleanupStack::PopAndDestroy(); |
896e9dbc5f19
Revision: 201031
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parents:
diff
changeset
|
203 |
|
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Revision: 201031
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diff
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|
204 |
if (ret) |
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Revision: 201031
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diff
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|
205 |
{ |
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Revision: 201031
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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|
206 |
break; |
896e9dbc5f19
Revision: 201031
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
207 |
} |
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Revision: 201031
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parents:
diff
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|
208 |
else |
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Revision: 201031
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parents:
diff
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|
209 |
{ |
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Revision: 201031
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parents:
diff
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|
210 |
//remain points to the right part |
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Revision: 201031
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parents:
diff
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|
211 |
remain.Set(remain.Right(remain.Length() - newLinePos - 1)); |
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newLinePos = remain.Find(KNewLine); |
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} |
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} |
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|
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if (!ret && remain.Length() > 0) |
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{ |
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//last line doesn't end with '\n' |
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RBuf8 last; |
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CleanupClosePushL(last); |
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last.CreateL(remain); |
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last.TrimLeft(); |
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last.LowerCase(); |
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if (last.Left(aProtocol.Length()) == aProtocol) |
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{ |
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ret = ETrue; |
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} |
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CleanupStack::PopAndDestroy(); |
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} |
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|
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return ret; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// ImplementationTable |
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// violates PC lint error :: Warning 611: Suspicious cast |
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// required by the ECOM framework to correctly identify the instantiation |
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// method pointer to provide to a client's resolution request. |
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// ----------------------------------------------------------------------------- |
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// |
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const TImplementationProxy ImplementationTable[] = |
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{ |
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IMPLEMENTATION_PROXY_ENTRY(KIRRecognizerImplementationUid, |
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CApaRecognizerEx::CreateRecognizerL) |
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}; |
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|
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// --------------------------------------------------------------------------- |
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// ImplementationGroupProxy |
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// Provides access to the implementationtable |
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// --------------------------------------------------------------------------- |
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// |
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EXPORT_C const TImplementationProxy* ImplementationGroupProxy( |
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TInt& aTableCount) |
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{ |
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IRLOG_DEBUG( "ImplementationGroupProxy" ); |
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aTableCount = sizeof(ImplementationTable) / sizeof(TImplementationProxy); |
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IRLOG_DEBUG( "ImplementationGroupProxy - Exiting." ); |
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return ImplementationTable; |
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} |
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|
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|
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262 |