--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browserutilities/favouritesengine/ClientServer/utilsrc/UnicodeFile.cpp	Mon Mar 30 12:54:55 2009 +0300
@@ -0,0 +1,126 @@
+/*
+* 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 the License "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: 
+*      Implementation of RUnicodeFile.
+*      
+*
+*/
+
+
+// INCLUDE FILES
+
+#include "UnicodeFile.h"
+
+// CONSTANTS
+
+/// Little-endian Unicode file header.
+LOCAL_D const TUint16 KLittleEndianUnicodeHeader = 0xFEFF;
+
+// ================= MEMBER FUNCTIONS =======================
+
+// ---------------------------------------------------------
+// RUnicodeFile::Open
+// ---------------------------------------------------------
+//
+TInt RUnicodeFile::Open( RFs& aFs, const TDesC& aName, TUint aFileMode )
+    {
+    if( aFileMode & EFileWrite )
+        {
+        // This supports only read access.
+        User::Leave( KErrNotSupported );
+        }
+    TInt err = iFile.Open( aFs, aName, aFileMode );
+    if ( !err )
+        {
+        // Check Unicode endianness.
+        TUint c = 0;
+        TRAPD( err, c = GetCharL() );
+        if( !err )
+            {
+            if ( c != KLittleEndianUnicodeHeader )
+                {
+                err = KErrNotSupported;
+                }
+            }
+        }
+    if( err )
+        {
+        iFile.Close();
+        }
+    return err;
+    }
+
+// ---------------------------------------------------------
+// RUnicodeFile::Replace
+// ---------------------------------------------------------
+//
+TInt RUnicodeFile::ReplaceL( RFs& aFs, const TDesC& aName, TUint aFileMode )
+    {
+    if( aFileMode & EFileRead )
+        {
+        // This supports only write access.
+        User::Leave( KErrNotSupported );
+        }
+    TInt err = iFile.Replace( aFs, aName, aFileMode );
+    if ( !err )
+        {
+        // Write Unicode header.
+        err = iFile.Write( TPtrC8( (TUint8*)&KLittleEndianUnicodeHeader, 2 ) );
+        }
+    if( err )
+        {
+        iFile.Close();
+        }
+    return err;
+    }
+
+// ---------------------------------------------------------
+// RUnicodeFile::Close
+// ---------------------------------------------------------
+//
+void RUnicodeFile::Close()
+    {
+    iFile.Close();
+    }
+
+// ---------------------------------------------------------
+// RUnicodeFile::GetCharL
+// ---------------------------------------------------------
+//
+TUint RUnicodeFile::GetCharL()
+    {
+    TUint c = 0;
+    TPtr8 ptr( (TUint8*)(&c), 2 );
+    User::LeaveIfError( iFile.Read( ptr, 2 ) );
+    if( ptr.Length() == 0 )
+        {
+        // Nothing is read, successfully: this must be EOF.
+        c = 0;
+        }
+    else if( ptr.Length() == 1 )
+        {
+        // Odd number of bytes in Unicode file?
+        User::Leave( KErrCorrupt );
+        }
+    return c;
+    }
+
+// ---------------------------------------------------------
+// RUnicodeFile::Write
+// ---------------------------------------------------------
+//
+TInt RUnicodeFile::Write( const TDesC16& aDes )
+    {
+    return iFile.Write ( TPtrC8( (const TUint8*)aDes.Ptr(), aDes.Size() ) );
+    }