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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <rtl/ustring.h>
#include <osl/diagnose.h>
#include "DTransHelper.hxx"
// implementation
CStgTransferHelper::CStgTransferHelper( bool bAutoInit,
HGLOBAL hGlob,
bool bDelStgOnRelease ) :
m_lpStream( nullptr ),
m_bDelStgOnRelease( bDelStgOnRelease )
{
if ( bAutoInit )
init( hGlob, m_bDelStgOnRelease );
}
// dtor
CStgTransferHelper::~CStgTransferHelper( )
{
if ( m_lpStream )
m_lpStream->Release( );
}
// TransferData into the
void CStgTransferHelper::write( const void* lpData, ULONG cb, ULONG* cbWritten )
{
HRESULT hr = E_FAIL;
if ( m_lpStream )
hr = m_lpStream->Write( lpData, cb, cbWritten );
if ( FAILED( hr ) )
throw CStgTransferException( hr );
#if OSL_DEBUG_LEVEL > 0
HGLOBAL hGlob;
hr = GetHGlobalFromStream( m_lpStream, &hGlob );
OSL_ASSERT( SUCCEEDED( hr ) );
/*DWORD dwSize =*/ GlobalSize( hGlob );
/*LPVOID lpdbgData =*/ GlobalLock( hGlob );
GlobalUnlock( hGlob );
#endif
}
// read
void CStgTransferHelper::read( LPVOID pv, ULONG cb, ULONG* pcbRead )
{
HRESULT hr = E_FAIL;
if ( m_lpStream )
hr = m_lpStream->Read( pv, cb , pcbRead );
if ( FAILED( hr ) )
throw CStgTransferException( hr );
}
// GetHGlobal
HGLOBAL CStgTransferHelper::getHGlobal( ) const
{
OSL_ASSERT( m_lpStream );
HGLOBAL hGlob = nullptr;
if ( m_lpStream )
{
HRESULT hr = GetHGlobalFromStream( m_lpStream, &hGlob );
if ( FAILED( hr ) )
hGlob = nullptr;
}
return hGlob;
}
// getIStream
void CStgTransferHelper::getIStream( LPSTREAM* ppStream )
{
OSL_ASSERT( ppStream );
*ppStream = m_lpStream;
if ( *ppStream )
static_cast< LPUNKNOWN >( *ppStream )->AddRef( );
}
// Init
void CStgTransferHelper::init( SIZE_T newSize,
sal_uInt32 uiFlags,
bool bDelStgOnRelease )
{
cleanup( );
m_bDelStgOnRelease = bDelStgOnRelease;
HGLOBAL hGlob = GlobalAlloc( uiFlags, newSize );
if ( nullptr == hGlob )
throw CStgTransferException( STG_E_MEDIUMFULL );
HRESULT hr = CreateStreamOnHGlobal( hGlob, m_bDelStgOnRelease, &m_lpStream );
if ( FAILED( hr ) )
{
GlobalFree( hGlob );
m_lpStream = nullptr;
throw CStgTransferException( hr );
}
#if OSL_DEBUG_LEVEL > 0
STATSTG statstg;
hr = m_lpStream->Stat( &statstg, STATFLAG_DEFAULT );
OSL_ASSERT( SUCCEEDED( hr ) );
#endif
}
// Init
void CStgTransferHelper::init( HGLOBAL hGlob,
bool bDelStgOnRelease )
{
cleanup( );
m_bDelStgOnRelease = bDelStgOnRelease;
HRESULT hr = CreateStreamOnHGlobal( hGlob, m_bDelStgOnRelease, &m_lpStream );
if ( FAILED( hr ) )
throw CStgTransferException( hr );
}
// free the global memory and invalidate the stream pointer
void CStgTransferHelper::cleanup( )
{
if ( m_lpStream && !m_bDelStgOnRelease )
{
HGLOBAL hGlob;
GetHGlobalFromStream( m_lpStream, &hGlob );
GlobalFree( hGlob );
}
if ( m_lpStream )
{
m_lpStream->Release( );
m_lpStream = nullptr;
}
}
// return the size of memory we point to
sal_uInt32 CStgTransferHelper::memSize( CLIPFORMAT cf ) const
{
DWORD dwSize = 0;
if ( nullptr != m_lpStream )
{
HGLOBAL hGlob;
GetHGlobalFromStream( m_lpStream, &hGlob );
if ( CF_TEXT == cf || RegisterClipboardFormatW( L"HTML Format" ) == cf )
{
char* pText = static_cast< char* >( GlobalLock( hGlob ) );
if ( pText )
{
dwSize = strlen(pText) + 1; // strlen + trailing '\0'
GlobalUnlock( hGlob );
}
}
else if ( CF_UNICODETEXT == cf )
{
sal_Unicode* pText = static_cast< sal_Unicode* >( GlobalLock( hGlob ) );
if ( pText )
{
dwSize = rtl_ustr_getLength( pText ) * sizeof( sal_Unicode );
GlobalUnlock( hGlob );
}
}
else
dwSize = GlobalSize( hGlob );
}
return dwSize;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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