TB10.1 Example Applications: examples/AppFramework/Recogniser/exampleRecognizer.cpp Source File

00001 // Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
-00002 // All rights reserved.
-00003 // This component and the accompanying materials are made available
-00004 // under the terms of "Eclipse Public License v1.0"
-00005 // which accompanies this distribution, and is available
-00006 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
-00007 //
-00008 // Initial Contributors:
-00009 // Nokia Corporation - initial contribution.
-00010 //
-00011 // Contributors:
-00012 //
-00013 // Description:
-00014 // EXAMPLE RECOGNIZER 
-00015 // This example code demonstrates how to write a simple data recognizer.
-00016 //
-00017 
-00018 
-00019 #include <eikenv.h>
-00020 #include <implementationproxy.h> 
-00021 
-00022 // User include
-00023 #include "exampleRecognizer.h"
-00024 
-00025 const TInt KNumDataTypes = 1;
-00026 const TUid KExampleDllUid = {0xE8000002};
-00027 const TInt KImplementationUid = 0x101F7DA1;
-00028 
-00029 // An example mime type
-00030 _LIT8(KExampleTextMimeType, "text/example");
-00031 
-00032 /*
-00033 Constructor - sets the number of supported mime types, 
-00034 the recognizer's priority and its UID.
-00035 */
-00036 CExampleNewRecognizer::CExampleNewRecognizer():CApaDataRecognizerType(KExampleDllUid, CApaDataRecognizerType::EHigh)
-00037         {
-00038     iCountDataTypes = KNumDataTypes;
-00039         }
-00040 
-00041 /*
-00042 Specifies this recognizer's preferred data buffer size passed to DoRecognizeL().
-00043 The actual value used will be the maximum of all recognizers.
-00044 */
-00045 TUint CExampleNewRecognizer::PreferredBufSize()
-00046         {
-00047     return 24;
-00048         }
-00049 
-00050 
-00051 /*
-00052 Returns the indexed data type that the recognizer can recognize. 
-00053 In this case, only 1 is supported. 
-00054 */
-00055 TDataType CExampleNewRecognizer::SupportedDataTypeL(TInt /*aIndex*/) const
-00056         {
-00057         return TDataType(KExampleTextMimeType);
-00058         }
-00059 
-00060 /*
-00061 Attempts to recognize the data type, given the filename and data buffer.
-00062 */
-00063 void CExampleNewRecognizer::DoRecognizeL(const TDesC& aName, const TDesC8& aBuffer)
-00064         {
-00065         _LIT8(KExampleData, "example");
-00066         _LIT(KDotExample, ".Example");
-00067 
-00068         TParse parse;
-00069         parse.Set(aName,NULL,NULL);
-00070         TPtrC ext=parse.Ext(); // extract the extension from the filename
-00071 
-00072         if (ext.CompareF(KDotExample)==0 && aBuffer.FindF(KExampleData)!=KErrNotFound)
-00073                 {
-00074                 iConfidence=ECertain;
-00075                 iDataType=TDataType(KExampleTextMimeType); 
-00076                 }
-00077     }
-00078 
-00079 /*
-00080 The ECom implementation creation function.
-00081 */
-00082 CApaDataRecognizerType* CExampleNewRecognizer::CreateRecognizerL()
-00083         {
-00084         return new (ELeave) CExampleNewRecognizer;
-00085         }
-00086 
-00087 /*
-00088 Standard ECom framework code 
-00089 */
-00090 const TImplementationProxy ImplementationTable[] = 
-00091     {
-00092         IMPLEMENTATION_PROXY_ENTRY(KImplementationUid,CExampleNewRecognizer::CreateRecognizerL)
-00093         };
-00094 
-00095 /*
-00096 Standard ECom framework code 
-00097 */
-00098 EXPORT_C const TImplementationProxy* ImplementationGroupProxy(TInt& aTableCount)
-00099     {
-00100     aTableCount = sizeof(ImplementationTable) / sizeof(TImplementationProxy);
-00101     return ImplementationTable;
-00102     }
-