--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/textinput/ptienginev2/src/PtiUserDictionary.cpp	Tue Feb 02 01:02:04 2010 +0200
@@ -0,0 +1,233 @@
+/*
+* Copyright (c) 2003 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:   Predective text input engine user dictionary 
+*               class implementation.
+*
+*/
+
+
+#include <s32file.h>
+#include "PtiUserDictionary.h"
+
+//                                 Core UID          Symbol class      CRC checksum
+#define UDB_HEADER_SIZE (TInt32)(sizeof(iCoreUID) + sizeof(TUint32) + sizeof(TUint32))
+
+// ---------------------------------------------------------------------------
+// CPtiUserDictionary::NewL
+// 
+// ---------------------------------------------------------------------------
+//
+EXPORT_C CPtiUserDictionary* CPtiUserDictionary::NewL(TInt aMaxSize)
+	{
+	CPtiUserDictionary* ud = new (ELeave) CPtiUserDictionary();
+	CleanupStack::PushL( ud );
+	ud->ConstructL(aMaxSize);
+	CleanupStack::Pop(); // ud
+	return ud;
+	}
+	
+// ---------------------------------------------------------------------------
+// CPtiUserDictionary::NewL
+// 
+// ---------------------------------------------------------------------------
+//
+EXPORT_C CPtiUserDictionary* CPtiUserDictionary::NewL(TDesC& aFileName, TInt aMaxSize)
+	{
+	CPtiUserDictionary* ud = new (ELeave) CPtiUserDictionary();
+	CleanupStack::PushL( ud );
+	ud->ConstructL(aFileName, aMaxSize);
+	CleanupStack::Pop(); // ud
+	return ud;
+	}
+
+// ---------------------------------------------------------------------------
+// CPtiUserDictionary::CPtiUserDictionary
+// 
+// ---------------------------------------------------------------------------
+//
+EXPORT_C CPtiUserDictionary::CPtiUserDictionary()
+	{
+	}
+
+// ---------------------------------------------------------------------------
+// CPtiUserDictionary::~CPtiUserDictionary
+// 
+// ---------------------------------------------------------------------------
+//	
+EXPORT_C CPtiUserDictionary::~CPtiUserDictionary()
+	{
+	delete iData;
+	}
+
+// ---------------------------------------------------------------------------
+// CPtiUserDictionary::ConstructL
+// 
+// ---------------------------------------------------------------------------
+//
+void CPtiUserDictionary::ConstructL(TInt aMaxSize)
+	{
+	iData = HBufC8::NewL(aMaxSize);
+	TPtr8 bufP8( iData->Des() );
+	bufP8.SetLength(aMaxSize);
+	bufP8.FillZ();
+	}
+
+// ---------------------------------------------------------------------------
+// CPtiUserDictionary::ConstructL
+// 
+// ---------------------------------------------------------------------------
+//
+void CPtiUserDictionary::ConstructL(TDesC& aFileName, TInt aMaxSize)
+	{
+	User::LeaveIfError(OpenL(aFileName, aMaxSize));
+	iFileName.Copy(aFileName);
+	}
+
+// ---------------------------------------------------------------------------
+// CPtiUserDictionary::OpenL
+// 
+// ---------------------------------------------------------------------------
+//
+EXPORT_C TInt CPtiUserDictionary::OpenL(TDesC& aFileName, TInt aMaxSize)
+	{
+	iFileName.Copy(aFileName);
+
+	RFs fsSession;
+	User::LeaveIfError(fsSession.Connect()); // Start session
+	CleanupClosePushL(fsSession);
+
+	TEntry entry;
+	User::LeaveIfError(fsSession.Entry(aFileName, entry));
+
+	RFileReadStream inStream;
+	inStream.PushL();
+	User::LeaveIfError(inStream.Open(fsSession, aFileName, EFileRead|EFileShareAny));
+
+	if (entry.iSize > aMaxSize + UDB_HEADER_SIZE)
+		{
+		User::Leave(KErrCorrupt);
+		}
+		
+	delete iData;
+	iData = NULL;
+	iData = HBufC8::NewL(aMaxSize);
+	TPtr8 dataDes = iData->Des();
+	dataDes.SetLength(aMaxSize);
+	dataDes.FillZ();		
+	
+	// First read header data.
+	iCoreUID = inStream.ReadInt32L();
+	iSymbolClass = inStream.ReadInt32L();
+	
+	// Then read and check actual data if it is there.
+	if (entry.iSize > sizeof(TInt32) + sizeof(TInt32))	
+		{	
+		TUint32 crc = inStream.ReadInt32L();
+		inStream.ReadL(dataDes, entry.iSize - UDB_HEADER_SIZE);		
+		
+		TUint32 dataCrc = 0;
+		Mem::Crc32(dataCrc, Data().Ptr(), Data().Length());
+		if (dataCrc != crc)
+			{
+			// Crc check failed, something wierd going on, initialize data and leave.
+			dataDes.FillZ();
+			User::Leave(KErrCorrupt);	
+			}		
+		iChecksum = crc;			
+		}
+		
+	CleanupStack::PopAndDestroy(2); // fsSession, inStream
+	
+	return KErrNone;
+	}
+
+// ---------------------------------------------------------------------------
+// CPtiUserDictionary::WriteL
+// 
+// ---------------------------------------------------------------------------
+//
+EXPORT_C TInt CPtiUserDictionary::WriteL(TDesC& aFileName)
+	{
+	RFs fsSession;
+	User::LeaveIfError(fsSession.Connect()); // Start session
+	CleanupClosePushL(fsSession);
+
+	RFileWriteStream outStream;
+	outStream.PushL();
+	User::LeaveIfError(outStream.Open(fsSession, aFileName, EFileWrite|EFileShareAny));
+	
+	// First write header data.	
+	outStream.WriteInt32L(iCoreUID);
+	outStream.WriteInt32L(iSymbolClass);
+	TUint32 c = 0;		
+	Mem::Crc32(c, Data().Ptr(), Data().Length());
+	outStream.WriteInt32L(c);
+	
+	// Then write actual data.
+	outStream.WriteL(Data().Ptr(), Data().Length());	
+		
+	outStream.CommitL();	
+	CleanupStack::PopAndDestroy(2); // fsSession, outStream  	
+		
+	iChecksum = c;
+
+	return KErrNone;
+	}
+
+// ---------------------------------------------------------------------------
+// CPtiUserDictionary::WriteL
+// 
+// ---------------------------------------------------------------------------
+//
+EXPORT_C TInt CPtiUserDictionary::WriteL()
+	{
+	if (iFileName.Length() == 0)
+		{
+		return KErrCorrupt;
+		}
+	
+	return WriteL( iFileName );
+	}
+
+// ---------------------------------------------------------------------------
+// CPtiUserDictionary::SpaceLeft
+// 
+// ---------------------------------------------------------------------------
+//
+EXPORT_C TInt CPtiUserDictionary::SpaceLeft() const	
+	{
+	return -1;
+	}
+
+// ---------------------------------------------------------------------------
+// CPtiUserDictionary::SetDataL
+// 
+// ---------------------------------------------------------------------------
+//
+EXPORT_C void CPtiUserDictionary::SetDataL(TAny* aData, TInt aLength)
+	{
+	// Keep possible existing maxlength value, because it is coming from 
+	// host.
+	TInt maxLength = (iData ? iData->Des().MaxLength() : aLength);
+
+	delete iData;
+	iData = NULL;
+	iData = HBufC8::NewL(maxLength);
+	TPtr8 dataP((TUint8*)aData, maxLength);
+	dataP.Set((TUint8*)aData, aLength, maxLength);
+	(*iData) = dataP;
+	}
+
+// End of file
+