--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/genericservices/mimerecognitionfw/rec/RECTXT.CPP	Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,120 @@
+// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+//
+
+#include <apmrec.h>
+#include <apmstd.h>
+#include "RECTXT.H"
+#include <ecom/implementationproxy.h>
+
+const TUid KUidMimeTxtRecognizer={0x100012FB};
+const TInt KMinBufferLength=42;  // minimum amount of file needed to determine a text file IF it's not called .TXT
+const TInt KMaxBufferLength=1024; // maximum amount of buffer space we will ever use
+_LIT8(KDataTypeTextPlain,"text/plain");
+_LIT(KTextFileExt,".txt");
+
+CApaTextRecognizer::CApaTextRecognizer()
+	:CApaDataRecognizerType(KUidMimeTxtRecognizer,CApaDataRecognizerType::ELow)
+	// Text files are low recognition - they don't have a clear signature
+	{
+	iCountDataTypes=1;
+	}
+
+TUint CApaTextRecognizer::PreferredBufSize()
+	{
+	return KMaxBufferLength;
+	}
+
+#if defined(_DEBUG)
+TDataType CApaTextRecognizer::SupportedDataTypeL(TInt aIndex) const
+#else
+TDataType CApaTextRecognizer::SupportedDataTypeL(TInt /*aIndex*/) const
+#endif
+	{
+	__ASSERT_DEBUG(aIndex==0,User::Invariant());
+	return TDataType(KDataTypeTextPlain);
+	}
+
+void CApaTextRecognizer::DoRecognizeL(const TDesC& aName, const TDesC8& aBuffer)
+	{
+	TBool nameRecognized=EFalse;
+    
+	// check if the file has valid UIDs 
+	if (aBuffer.Length() >= 16)
+		{
+		// if the first 3 bytes are valid UIDs,then this file is not a plain/text. 
+		// Set iConfidence appropriately and exit.
+		const TCheckedUid checkUid(aBuffer.Left(16));    
+		if (checkUid.UidType().IsValid())
+			{
+			iConfidence=ENotRecognized;
+			return;
+			}
+		}
+
+	if (aName.Length()>4)
+		{
+		nameRecognized=(aName.Right(4).CompareF(KTextFileExt)==0);
+		}
+	const TInt length=Min(aBuffer.Length(), KMaxBufferLength);
+	if (length<KMinBufferLength && !nameRecognized)
+		return;
+	TInt ii;
+	for (ii=0; ii<length; ii++)
+		{
+		const TUint chr=aBuffer[ii];
+		// these are guesses of what WON'T be in a text file
+		if (chr<9 || chr==11 || chr==12 || (chr>13 && chr<32))
+			{
+			break;
+			}
+		if (chr>148)
+			{
+			break;
+			}
+		}
+	const TBool validChars=(ii==length);
+	
+	if (nameRecognized)
+		{
+		iConfidence=validChars? EProbable : EUnlikely;
+		}
+	else
+		{
+		if (!validChars)
+			{
+			return;
+			}
+		iConfidence=EPossible;
+		}
+	iDataType=TDataType(KDataTypeTextPlain);
+	}
+
+CApaDataRecognizerType* CApaTextRecognizer::CreateRecognizerL()
+	{
+	return new (ELeave) CApaTextRecognizer();
+	}
+
+const TImplementationProxy ImplementationTable[] = 
+    {
+	IMPLEMENTATION_PROXY_ENTRY(0x101F7DA0,CApaTextRecognizer::CreateRecognizerL)
+	};
+
+EXPORT_C const TImplementationProxy* ImplementationGroupProxy(TInt& aTableCount)
+    {
+    aTableCount = sizeof(ImplementationTable) / sizeof(TImplementationProxy);
+    return ImplementationTable;
+    }
+
+