// Copyright (c) 2004-2009 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:
//
/**
@file
@internalTechnology
*/
#include <elements/metabuffer.h>
#include <elements/metadata.h>
#ifdef _DEBUG
// Panic category for "absolutely impossible!" vanilla ASSERT()-type panics from this module
// (if it could happen through user error then you should give it an explicit, documented, category + code)
_LIT(KSpecAssert_ElemNetMetaMtBfr, "ElemNetMetaMtBfr");
#endif
using namespace Meta;
TMetaBuf8::TMetaBuf8(const TAny* aData)
: TMetaVarLen8<RBuf8>(aData)
{
}
EXPORT_C MMetaType* TMetaBuf8::NewL(const TAny* aMem, const TAny* aData)
/**
* Instantiates a meta type for RBuf8.
* Used for attribure registration (in the data v-table).
*/
{
return ::new ((TUint8*)aMem) TMetaBuf8(aData);
}
EXPORT_C TInt TMetaBuf8::Load(TPtrC8& aBuffer)
{
TInt errlen = CheckBuf( aBuffer );
if (errlen < 0)
{
return errlen;
}
if ( iData->MaxLength() < errlen )
{
iData->Close();
TInt err = iData->Create(errlen);
if ( err != KErrNone )
return err;
}
//and copy whatever we can into the client descriptor
CopyBuf(aBuffer,errlen);
TInt padByte = errlen % 2;
aBuffer.Set(aBuffer.Ptr() + errlen + padByte, aBuffer.Length() - errlen - padByte); //update pointer
return KErrNone;
}
EXPORT_C TInt TMetaBuf8::Store(TDes8& aBuffer) const
{
// Ask the descriptor how much data does it currently store
TUint32 size = this->iData->Length();
// The length variable and the data must fit
if ((TUint32)(aBuffer.MaxLength() - aBuffer.Length()) < (size + sizeof(TUint32)))
{
return KErrOverflow;
}
// Store
aBuffer.Append((TUint8*)&size, sizeof(TUint32));
AppendToBuf(aBuffer);
if (size & 1)
{
// Pad odd lengths to an even number to avoid potential
// alignment issues on target
TUint8 pad(0);
aBuffer.Append(&pad, 1);
}
return KErrNone;
}
EXPORT_C void TMetaBuf8::Copy(const TAny* aData)
{
const RBuf8& var = *((RBuf8*)aData);
if ( iData->MaxLength() < var.Length() )
{
iData->Close();
TInt err = iData->Create(var.Length());
if ( err != KErrNone )
return;
}
TMetaVarLen8<RBuf8>::Copy(aData);
}
EXPORT_C TInt TMetaBuf8::Length() const
{
return TMetaVarLen8<RBuf8>::Length();
}
TMetaBuf16::TMetaBuf16(const TAny* aData)
: TMetaVarLen16<RBuf16>(aData)
{
}
EXPORT_C MMetaType* TMetaBuf16::NewL(const TAny* aMem, const TAny* aData)
/**
* Instantiates a meta type for RBuf8.
* Used for attribure registration (in the data v-table).
*/
{
return ::new ((TUint8*)aMem) TMetaBuf16(aData);
}
EXPORT_C TInt TMetaBuf16::Load(TPtrC8& aBuffer)
{
TInt errlen = CheckBuf( aBuffer );
if (errlen < 0)
{
return errlen;
}
// errlen is in bytes we want unicode chars
__ASSERT_DEBUG((errlen & 1) == 0, User::Panic(KSpecAssert_ElemNetMetaMtBfr, 1));
if ( iData->MaxLength() < errlen / 2)
{
iData->Close();
TInt err = iData->Create(errlen / 2);
if ( err != KErrNone )
return err;
}
//and copy whatever we can into the client descriptor
CopyBuf(aBuffer,errlen);
aBuffer.Set(aBuffer.Ptr() + errlen, aBuffer.Length() - errlen); //update pointer
return KErrNone;
}
EXPORT_C TInt TMetaBuf16::Store(TDes8& aBuffer) const
{
return TMetaVarLen16<RBuf16>::Store(aBuffer);
}
EXPORT_C void TMetaBuf16::Copy(const TAny* aData)
{
const RBuf16& var = *((RBuf16*)aData);
if ( iData->MaxLength() < var.Length() )
{
iData->Close();
TInt err = iData->Create(var.Length());
if ( err != KErrNone )
return;
}
TMetaVarLen16<RBuf16>::Copy(aData);
}
EXPORT_C TInt TMetaBuf16::Length() const
{
return TMetaVarLen16<RBuf16>::Length();
}