--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/homescreenpluginsrv/hspstools/src/hspslogbus.cpp	Thu Dec 17 08:54:17 2009 +0200
@@ -0,0 +1,307 @@
+/*
+* Copyright (c) 2008 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:  Implementation of ChspsLogBus.
+*
+*/
+
+
+#include "hspslogbus.h"
+
+#ifdef HSPS_BUILD_LOG_IMPLEMENTATION
+const TInt KMessageGranularity = 256; // initial size and grow-by factor. 
+const TInt KMessageSanityLimit = 16384; // 16kb.
+_LIT( KLogError, "Warning: Logging failed." );
+const TInt KDefaultMaxLineLen = 128;
+#endif
+
+//----------------------------------------------------------------------------
+// ChspsLogBus::~ChspsLogBus
+// ----------------------------------------------------------------------------
+//
+EXPORT_C ChspsLogBus::~ChspsLogBus()
+    {
+    }
+
+//----------------------------------------------------------------------------
+// ChspsLogBus::LogText
+// ----------------------------------------------------------------------------
+//
+#ifdef HSPS_BUILD_LOG_IMPLEMENTATION
+EXPORT_C void ChspsLogBus::LogText( TRefByValue<const TDesC16> aFmt, ... )
+    {    
+    VA_LIST list;
+    VA_START( list, aFmt );
+       
+    HBufC* formatted = FormatMessage( aFmt, list );    
+    if( formatted )
+        {
+        CropAndLogText( *formatted );
+        delete formatted;
+        formatted = NULL;
+        }
+    else
+        {
+        _LogText( KLogError() );
+        }
+    
+    VA_END( list );    
+    }
+#else
+EXPORT_C void ChspsLogBus::LogText( TRefByValue<const TDesC16> /*aFmt*/, ... )
+    {
+    }
+#endif
+
+//----------------------------------------------------------------------------
+// ChspsLogBus::LogText
+// ----------------------------------------------------------------------------
+//
+#ifdef HSPS_BUILD_LOG_IMPLEMENTATION
+EXPORT_C void ChspsLogBus::LogText( TRefByValue<const TDesC8> aFmt, ... )
+    {    
+    VA_LIST list;
+    VA_START( list, aFmt );
+       
+    HBufC* formatted = FormatMessage( aFmt, list );    
+    if( formatted )
+        {
+        CropAndLogText( *formatted );
+        delete formatted;
+        formatted = NULL;
+        }
+    else
+        {
+        _LogText( KLogError() );
+        }
+    
+    VA_END( list );    
+    }
+#else
+EXPORT_C void ChspsLogBus::LogText( TRefByValue<const TDesC8> /*aFmt*/, ... )
+    {
+    }
+#endif
+
+//----------------------------------------------------------------------------
+// ChspsLogBus::ChspsLogBus
+// ----------------------------------------------------------------------------
+//
+#ifdef HSPS_BUILD_LOG_IMPLEMENTATION
+TInt ChspsLogBus::MaxLineLen() const
+    {    
+    return KDefaultMaxLineLen;
+    }
+#else
+TInt ChspsLogBus::MaxLineLen() const
+    {
+    return KErrNotSupported;
+    }    
+#endif
+
+//----------------------------------------------------------------------------
+// ChspsLogBus::ChspsLogBus
+// ----------------------------------------------------------------------------
+//
+EXPORT_C ChspsLogBus::ChspsLogBus()
+    {
+    // No implementation required
+    }
+
+//----------------------------------------------------------------------------
+// ChspsLogBus::FormatMessage
+// ----------------------------------------------------------------------------
+//
+#ifdef HSPS_BUILD_LOG_IMPLEMENTATION
+HBufC* ChspsLogBus::FormatMessage( TRefByValue<const TDesC16> aFmt, VA_LIST aList )
+    {
+    HBufC* message = NULL;
+    
+    TInt messageSize = KMessageGranularity;    
+    
+    while( ETrue )
+        {        
+        TRAPD( err, message = HBufC::NewL( messageSize ) );        
+        if( err != KErrNone )
+            {
+            delete message;
+            message = NULL;
+
+            break;
+            }
+
+        iOverflow = EFalse;
+        message->Des().AppendFormatList( aFmt, aList, this );        
+        if( !iOverflow )
+            {
+            // All ok.
+            break;
+            }
+        else
+            {
+            messageSize *= 2;
+            
+            delete message;
+            message = NULL;
+
+            // Sanity check.
+            if( messageSize > KMessageSanityLimit )
+                {
+                break;
+                }            
+            }        
+        }
+    
+    return message; 
+    }
+#else
+HBufC* ChspsLogBus::FormatMessage( TRefByValue<const TDesC16> /*aFmt*/, VA_LIST /*aList*/ )
+    {
+    return NULL;
+    }
+#endif
+
+//----------------------------------------------------------------------------
+// ChspsLogBus::Overflow
+// ----------------------------------------------------------------------------
+//
+void ChspsLogBus::Overflow( TDes16& /*aDes*/ )
+    {
+    iOverflow = ETrue;
+    }
+
+//----------------------------------------------------------------------------
+// ChspsLogBus::FormatMessage
+// ----------------------------------------------------------------------------
+//
+#ifdef HSPS_BUILD_LOG_IMPLEMENTATION
+HBufC* ChspsLogBus::FormatMessage( TRefByValue<const TDesC8> aFmt, VA_LIST aList )
+    {
+    HBufC8* message8bit = NULL;
+    
+    TInt messageSize = KMessageGranularity;    
+    
+    while( ETrue )
+        {        
+        TRAPD( err, message8bit = HBufC8::NewL( messageSize ) );        
+        if( err != KErrNone )
+            {
+            delete message8bit;
+            message8bit = NULL;
+
+            break;
+            }
+
+        iOverflow = EFalse;
+        message8bit->Des().AppendFormatList( aFmt, aList, this );        
+        if( !iOverflow )
+            {
+            // All ok.
+            break;
+            }
+        else
+            {
+            messageSize *= 2;
+            
+            delete message8bit;
+            message8bit = NULL;
+
+            // Sanity check.
+            if( messageSize >= KMessageSanityLimit )
+                {
+                break;
+                }            
+            }        
+        }
+    
+    // Convert 8bit to 16bit for logging.    
+    HBufC* message16bit = NULL;
+    if( message8bit && message8bit->Length() > 0 )
+        {
+        TRAPD( err, message16bit = HBufC::NewL( message8bit->Length() ));
+        if( err == KErrNone )
+            {
+            message16bit->Des().Copy( *message8bit );
+            }
+        else
+            {
+            delete message16bit;
+            message16bit = NULL;
+            }
+        }
+    else if( message8bit && message8bit->Length() == 0 )
+        {
+        // Source is empty.
+        TRAP_IGNORE( message16bit = KNullDesC().AllocL() );
+        }
+    
+    delete message8bit;
+    message8bit = NULL;
+    
+    return message16bit; 
+    }
+#else
+HBufC* ChspsLogBus::FormatMessage( TRefByValue<const TDesC8> /*aFmt*/, VA_LIST /*aList*/ )
+    {
+    return NULL;
+    }
+#endif
+
+//----------------------------------------------------------------------------
+// ChspsLogBus::Overflow
+// ----------------------------------------------------------------------------
+//
+void ChspsLogBus::Overflow( TDes8& /*aDes*/ )
+    {
+    iOverflow = ETrue;
+    }
+
+#ifdef HSPS_BUILD_LOG_IMPLEMENTATION
+void ChspsLogBus::CropAndLogText( const TDesC& aText )
+    {
+    const TInt KLineMax = MaxLineLen();
+    
+    // Fits to one line.
+    if( aText.Length() <= KLineMax )
+        {
+        _LogText( aText );
+        return;
+        }
+    
+    // Does not fit. Log cropped.    
+    TPtrC ptr = aText;    
+    while( ETrue )
+        {                
+        const TInt KRemainingLen = ptr.Length();
+        if( KRemainingLen == 0 )
+            {
+            break;
+            }
+        
+        if( KRemainingLen <= KLineMax )
+            {
+            _LogText( ptr );
+            break;
+            }
+        else
+            {
+            _LogText( ptr.Left( KLineMax ) );
+            ptr.Set( ptr.Right( ptr.Length() - KLineMax ) );
+            }
+        }
+    }
+#else
+void ChspsLogBus::CropAndLogText( const TDesC& /*aText*/ )
+    {
+    }
+#endif