/* -*- 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 <osl/diagnose.h>
#include <o3tl/char16_t2wchar_t.hxx>
#include <o3tl/safeint.hxx>
#include "XTDataObject.hxx"
#include <com/sun/star/datatransfer/DataFlavor.hpp>
#include "ImplHelper.hxx"
#include "DTransHelper.hxx"
#include "TxtCnvtHlp.hxx"
#include <com/sun/star/datatransfer/UnsupportedFlavorException.hpp>
#include <com/sun/star/datatransfer/clipboard/XClipboardEx.hpp>
#include <com/sun/star/awt/AsyncCallback.hpp>
#include <com/sun/star/awt/XCallback.hpp>
#include "FmtFilter.hxx"
#include <cppuhelper/implbase.hxx>
#if !defined WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
#endif
#include <windows.h>
#include <shlobj.h>
using namespace com::sun::star::datatransfer;
using namespace com::sun::star::datatransfer::clipboard;
using namespace com::sun::star::uno;
using namespace com::sun::star::lang;
namespace {
void setupStgMedium( const FORMATETC& fetc,
CStgTransferHelper& stgTransHlp,
STGMEDIUM& stgmedium )
{
stgmedium.pUnkForRelease = nullptr;
if ( fetc.cfFormat == CF_METAFILEPICT )
{
stgmedium.tymed = TYMED_MFPICT;
stgmedium.hMetaFilePict = static_cast < HMETAFILEPICT >( stgTransHlp.getHGlobal( ) );
}
else if ( fetc.cfFormat == CF_ENHMETAFILE )
{
stgmedium.tymed = TYMED_ENHMF;
stgmedium.hEnhMetaFile = static_cast < HENHMETAFILE >( stgTransHlp.getHGlobal( ) );
}
else if ( fetc.tymed & TYMED_HGLOBAL )
{
stgmedium.tymed = TYMED_HGLOBAL;
stgmedium.hGlobal = stgTransHlp.getHGlobal( );
}
else if ( fetc.tymed & TYMED_ISTREAM )
{
stgmedium.tymed = TYMED_ISTREAM;
stgTransHlp.getIStream( &stgmedium.pstm );
}
else
OSL_ASSERT( false );
}
/**
We need to destroy XTransferable in the main thread to avoid dead lock
when locking in the clipboard thread . So we transfer the ownership of the
XTransferable reference to this object and release it when the callback
is executed in main thread .
*/
class AsyncDereference : public cppu::WeakImplHelper<css::awt::XCallback>
{
Reference<XTransferable> maTransferable;
public :
AsyncDereference(css::uno::Reference<css::datatransfer::XTransferable> const & rTransferable)
: maTransferable(rTransferable)
{}
virtual void SAL_CALL notify(css::uno::Any const &) override
{
maTransferable.clear();
}
};
// a helper class that will be thrown by the function validateFormatEtc
class CInvalidFormatEtcException
{
public :
HRESULT m_hr;
explicit CInvalidFormatEtcException( HRESULT hr ) : m_hr( hr ) {};
};
void validateFormatEtc( LPFORMATETC lpFormatEtc )
{
assert(lpFormatEtc);
if ( lpFormatEtc->lindex != -1 )
throw CInvalidFormatEtcException( DV_E_LINDEX );
if ( !(lpFormatEtc->dwAspect & DVASPECT_CONTENT) &&
!(lpFormatEtc->dwAspect & DVASPECT_SHORTNAME) )
throw CInvalidFormatEtcException( DV_E_DVASPECT );
if ( !(lpFormatEtc->tymed & TYMED_HGLOBAL) &&
!(lpFormatEtc->tymed & TYMED_ISTREAM) &&
!(lpFormatEtc->tymed & TYMED_MFPICT) &&
!(lpFormatEtc->tymed & TYMED_ENHMF) )
throw CInvalidFormatEtcException( DV_E_TYMED );
if ( lpFormatEtc->cfFormat == CF_METAFILEPICT &&
!(lpFormatEtc->tymed & TYMED_MFPICT) )
throw CInvalidFormatEtcException( DV_E_TYMED );
if ( lpFormatEtc->cfFormat == CF_ENHMETAFILE &&
!(lpFormatEtc->tymed & TYMED_ENHMF) )
throw CInvalidFormatEtcException( DV_E_TYMED );
}
void invalidateStgMedium( STGMEDIUM& stgmedium )
{
stgmedium.tymed = TYMED_NULL;
}
HRESULT translateStgExceptionCode( HRESULT hr )
{
HRESULT hrTransl;
switch ( hr )
{
case STG_E_MEDIUMFULL:
hrTransl = hr;
break ;
default :
hrTransl = E_UNEXPECTED;
break ;
}
return hrTransl;
}
// inline
void renderDataAndSetupStgMedium(
const sal_Int8* lpStorage, const FORMATETC& fetc, sal_uInt32 nInitStgSize,
sal_uInt32 nBytesToTransfer, STGMEDIUM& stgmedium )
{
OSL_PRECOND( !nInitStgSize || (nInitStgSize >= nBytesToTransfer),
"Memory size less than number of bytes to transfer" );
CStgTransferHelper stgTransfHelper( AUTO_INIT );
// setup storage size
if ( nInitStgSize > 0 )
stgTransfHelper.init( nInitStgSize );
#if OSL_DEBUG_LEVEL > 0
sal_uInt32 nBytesWritten = 0 ;
stgTransfHelper.write( lpStorage, nBytesToTransfer, &nBytesWritten );
OSL_ASSERT( nBytesWritten == nBytesToTransfer );
#else
stgTransfHelper.write( lpStorage, nBytesToTransfer );
#endif
setupStgMedium( fetc, stgTransfHelper, stgmedium );
}
}
CXTDataObject::CXTDataObject( const Reference< XComponentContext >& rxContext,
const Reference< XTransferable >& aXTransferable )
: m_nRefCnt( 0 )
, m_XTransferable( aXTransferable )
, m_XComponentContext( rxContext )
, m_bFormatEtcContainerInitialized( false )
, m_DataFormatTranslator( rxContext )
, m_FormatRegistrar( rxContext, m_DataFormatTranslator )
{
}
CXTDataObject::~CXTDataObject()
{
css::awt::AsyncCallback::create(m_XComponentContext)->addCallback(
new AsyncDereference(m_XTransferable),
css::uno::Any());
}
// IUnknown->QueryInterface
STDMETHODIMP CXTDataObject::QueryInterface( REFIID iid, void ** ppvObject )
{
if ( nullptr == ppvObject )
return E_INVALIDARG;
HRESULT hr = E_NOINTERFACE;
*ppvObject = nullptr;
if ( ( __uuidof( IUnknown ) == iid ) ||
( __uuidof( IDataObject ) == iid ) )
{
*ppvObject = static_cast < IUnknown* >( this );
static_cast <LPUNKNOWN>(*ppvObject)->AddRef( );
hr = S_OK;
}
return hr;
}
// IUnknown->AddRef
STDMETHODIMP_(ULONG) CXTDataObject::AddRef( )
{
return static_cast < ULONG >( InterlockedIncrement( &m_nRefCnt ) );
}
// IUnknown->Release
STDMETHODIMP_(ULONG) CXTDataObject::Release( )
{
ULONG nRefCnt =
static_cast < ULONG >( InterlockedDecrement( &m_nRefCnt ) );
if ( 0 == nRefCnt )
delete this ;
return nRefCnt;
}
STDMETHODIMP CXTDataObject::GetData( FORMATETC * pFormatetc, STGMEDIUM * pmedium )
{
if ( !(pFormatetc && pmedium) )
return E_INVALIDARG;
try
{
// prepare data transfer
invalidateStgMedium( *pmedium );
validateFormatEtc( pFormatetc );
// handle locale request, because locale is an artificial format for us
if ( CF_LOCALE == pFormatetc->cfFormat )
renderLocaleAndSetupStgMedium( *pFormatetc, *pmedium );
else if ( CF_UNICODETEXT == pFormatetc->cfFormat )
renderUnicodeAndSetupStgMedium( *pFormatetc, *pmedium );
else
renderAnyDataAndSetupStgMedium( *pFormatetc, *pmedium );
}
catch (UnsupportedFlavorException&)
{
HRESULT hr = DV_E_FORMATETC;
CFormatEtc aFormatetc(*pFormatetc);
if (CFormatRegistrar::isSynthesizeableFormat(aFormatetc))
hr = renderSynthesizedFormatAndSetupStgMedium( *pFormatetc, *pmedium );
return hr;
}
catch ( CInvalidFormatEtcException& ex )
{
return ex.m_hr;
}
catch ( CStgTransferHelper::CStgTransferException& ex )
{
return translateStgExceptionCode( ex.m_hr );
}
catch (...)
{
return E_UNEXPECTED;
}
return S_OK;
}
//inline
void CXTDataObject::renderLocaleAndSetupStgMedium(
FORMATETC const & fetc, STGMEDIUM& stgmedium )
{
if ( !m_FormatRegistrar.hasSynthesizedLocale( ) )
throw CInvalidFormatEtcException( DV_E_FORMATETC );
LCID lcid = CFormatRegistrar::getSynthesizedLocale( );
renderDataAndSetupStgMedium(
reinterpret_cast < sal_Int8* >( &lcid ),
fetc,
0 ,
sizeof ( LCID ),
stgmedium );
}
void CXTDataObject::renderUnicodeAndSetupStgMedium(
FORMATETC const & fetc, STGMEDIUM& stgmedium )
{
DataFlavor aFlavor = formatEtcToDataFlavor( fetc );
Any aAny = m_XTransferable->getTransferData( aFlavor );
// unfortunately not all transferables fulfill the
// spec. and do throw an UnsupportedFlavorException
// so we must check the any
if ( !aAny.hasValue( ) )
{
OSL_FAIL( "XTransferable should throw an exception if ask for an unsupported flavor" );
throw UnsupportedFlavorException( );
}
OUString aText;
aAny >>= aText;
sal_uInt32 nBytesToTransfer = aText.getLength( ) * sizeof ( sal_Unicode );
// to be sure there is an ending 0
sal_uInt32 nRequiredMemSize = nBytesToTransfer + sizeof ( sal_Unicode );
renderDataAndSetupStgMedium(
reinterpret_cast < const sal_Int8* >( aText.getStr( ) ),
fetc,
nRequiredMemSize,
nBytesToTransfer,
stgmedium );
}
void CXTDataObject::renderAnyDataAndSetupStgMedium(
FORMATETC& fetc, STGMEDIUM& stgmedium )
{
DataFlavor aFlavor = formatEtcToDataFlavor( fetc );
Any aAny = m_XTransferable->getTransferData( aFlavor );
// unfortunately not all transferables fulfill the
// spec. and do throw an UnsupportedFlavorException
// so we must check the any
if ( !aAny.hasValue( ) )
{
OSL_FAIL( "XTransferable should throw an exception if ask for an unsupported flavor" );
throw UnsupportedFlavorException( );
}
Sequence< sal_Int8 > clipDataStream;
aAny >>= clipDataStream;
sal_uInt32 nRequiredMemSize = 0 ;
if ( CDataFormatTranslator::isOemOrAnsiTextFormat( fetc.cfFormat ) )
nRequiredMemSize = sizeof ( sal_Int8 ) * clipDataStream.getLength( ) + 1 ;
// prepare data for transmission
// #i124085# DIBV5 should not happen for now, but keep as hint here
if ( CF_DIBV5 == fetc.cfFormat || CF_DIB == fetc.cfFormat )
{
#ifdef DBG_UTIL
if (CF_DIBV5 == fetc.cfFormat)
{
OSL_ENSURE(o3tl::make_unsigned(clipDataStream.getLength()) > (sizeof (BITMAPFILEHEADER) + sizeof (BITMAPV5HEADER)), "Wrong size on CF_DIBV5 data (!)" );
}
else // CF_DIB == fetc.cfFormat
{
OSL_ENSURE(o3tl::make_unsigned(clipDataStream.getLength()) > (sizeof (BITMAPFILEHEADER) + sizeof (BITMAPINFOHEADER)), "Wrong size on CF_DIB data (!)" );
}
#endif
// remove BITMAPFILEHEADER
clipDataStream = OOBmpToWinDIB( clipDataStream );
}
if ( CF_METAFILEPICT == fetc.cfFormat )
{
stgmedium.tymed = TYMED_MFPICT;
stgmedium.hMetaFilePict = OOMFPictToWinMFPict( clipDataStream );
stgmedium.pUnkForRelease = nullptr;
}
else if ( CF_ENHMETAFILE == fetc.cfFormat )
{
stgmedium.tymed = TYMED_ENHMF;
stgmedium.hMetaFilePict = OOMFPictToWinENHMFPict( clipDataStream );
stgmedium.pUnkForRelease = nullptr;
}
else
renderDataAndSetupStgMedium(
clipDataStream.getArray( ),
fetc,
nRequiredMemSize,
clipDataStream.getLength( ),
stgmedium );
}
HRESULT CXTDataObject::renderSynthesizedFormatAndSetupStgMedium( FORMATETC& fetc, STGMEDIUM& stgmedium )
{
HRESULT hr = S_OK;
try
{
if ( CF_UNICODETEXT == fetc.cfFormat )
// the transferable seems to have only text
renderSynthesizedUnicodeAndSetupStgMedium( fetc, stgmedium );
else if ( CDataFormatTranslator::isOemOrAnsiTextFormat( fetc.cfFormat ) )
// the transferable seems to have only unicode text
renderSynthesizedTextAndSetupStgMedium( fetc, stgmedium );
else
// the transferable seems to have only text/html
renderSynthesizedHtmlAndSetupStgMedium( fetc, stgmedium );
}
catch (UnsupportedFlavorException&)
{
hr = DV_E_FORMATETC;
}
catch ( CInvalidFormatEtcException& )
{
OSL_FAIL( "Unexpected exception" );
}
catch ( CStgTransferHelper::CStgTransferException& ex )
{
return translateStgExceptionCode( ex.m_hr );
}
catch (...)
{
hr = E_UNEXPECTED;
}
return hr;
}
// the transferable must have only text, so we will synthesize unicode text
void CXTDataObject::renderSynthesizedUnicodeAndSetupStgMedium( FORMATETC const & fetc, STGMEDIUM& stgmedium )
{
OSL_ASSERT( CF_UNICODETEXT == fetc.cfFormat );
Any aAny = m_XTransferable->getTransferData( m_FormatRegistrar.getRegisteredTextFlavor( ) );
// unfortunately not all transferables fulfill the
// spec. and do throw an UnsupportedFlavorException
// so we must check the any
if ( !aAny.hasValue( ) )
{
OSL_FAIL( "XTransferable should throw an exception if ask for an unsupported flavor" );
throw UnsupportedFlavorException( );
}
Sequence< sal_Int8 > aText;
aAny >>= aText;
CStgTransferHelper stgTransfHelper;
MultiByteToWideCharEx(
CFormatRegistrar::getRegisteredTextCodePage( ),
reinterpret_cast < char * >( aText.getArray( ) ),
aText.getLength( ),
stgTransfHelper );
setupStgMedium( fetc, stgTransfHelper, stgmedium );
}
// the transferable must have only unicode text so we will synthesize text
void CXTDataObject::renderSynthesizedTextAndSetupStgMedium( FORMATETC& fetc, STGMEDIUM& stgmedium )
{
OSL_ASSERT( CDataFormatTranslator::isOemOrAnsiTextFormat( fetc.cfFormat ) );
DataFlavor aFlavor = formatEtcToDataFlavor(
CDataFormatTranslator::getFormatEtcForClipformat( CF_UNICODETEXT ) );
Any aAny = m_XTransferable->getTransferData( aFlavor );
// unfortunately not all transferables fulfill the
// spec. and do throw an UnsupportedFlavorException
// so we must check the any
if ( !aAny.hasValue( ) )
{
OSL_FAIL( "XTransferable should throw an exception if ask for an unsupported flavor" );
throw UnsupportedFlavorException( );
}
OUString aUnicodeText;
aAny >>= aUnicodeText;
CStgTransferHelper stgTransfHelper;
WideCharToMultiByteEx(
GetACP( ),
o3tl::toW( aUnicodeText.getStr( ) ),
aUnicodeText.getLength( ),
stgTransfHelper );
setupStgMedium( fetc, stgTransfHelper, stgmedium );
}
void CXTDataObject::renderSynthesizedHtmlAndSetupStgMedium( FORMATETC& fetc, STGMEDIUM& stgmedium )
{
OSL_ASSERT( CDataFormatTranslator::isHTMLFormat( fetc.cfFormat ) );
DataFlavor aFlavor;
// creating a DataFlavor on the fly
aFlavor.MimeType = "text/html" ;
aFlavor.DataType = cppu::UnoType<Sequence< sal_Int8 >>::get();
Any aAny = m_XTransferable->getTransferData( aFlavor );
// unfortunately not all transferables fulfill the
// spec. and do throw an UnsupportedFlavorException
// so we must check the any
if ( !aAny.hasValue( ) )
{
OSL_FAIL( "XTransferable should throw an exception if ask for an unsupported flavor" );
throw UnsupportedFlavorException( );
}
Sequence< sal_Int8 > aTextHtmlSequence;
aAny >>= aTextHtmlSequence;
Sequence< sal_Int8 > aHTMLFormatSequence = TextHtmlToHTMLFormat( aTextHtmlSequence );
sal_uInt32 nBytesToTransfer = aHTMLFormatSequence.getLength( );
renderDataAndSetupStgMedium(
reinterpret_cast < const sal_Int8* >( aHTMLFormatSequence.getArray( ) ),
fetc,
0 ,
nBytesToTransfer,
stgmedium );
}
// IDataObject->EnumFormatEtc
STDMETHODIMP CXTDataObject::EnumFormatEtc(
DWORD dwDirection, IEnumFORMATETC** ppenumFormatetc )
{
if ( nullptr == ppenumFormatetc )
return E_INVALIDARG;
if ( DATADIR_SET == dwDirection )
return E_NOTIMPL;
*ppenumFormatetc = nullptr;
InitializeFormatEtcContainer( );
HRESULT hr;
if ( DATADIR_GET == dwDirection )
{
*ppenumFormatetc = new CEnumFormatEtc( this , m_FormatEtcContainer );
static_cast < LPUNKNOWN >( *ppenumFormatetc )->AddRef( );
hr = S_OK;
}
else
hr = E_INVALIDARG;
return hr;
}
// IDataObject->QueryGetData
STDMETHODIMP CXTDataObject::QueryGetData( FORMATETC * pFormatetc )
{
if ( (nullptr == pFormatetc) || IsBadReadPtr( pFormatetc, sizeof ( FORMATETC ) ) )
return E_INVALIDARG;
InitializeFormatEtcContainer( );
CFormatEtc aFormatetc(*pFormatetc);
return m_FormatEtcContainer.hasFormatEtc(aFormatetc) ? S_OK : S_FALSE;
}
// IDataObject->GetDataHere
STDMETHODIMP CXTDataObject::GetDataHere( FORMATETC *, STGMEDIUM * )
{
return E_NOTIMPL;
}
// IDataObject->GetCanonicalFormatEtc
STDMETHODIMP CXTDataObject::GetCanonicalFormatEtc( FORMATETC *, FORMATETC * )
{
return E_NOTIMPL;
}
// IDataObject->SetData
STDMETHODIMP CXTDataObject::SetData( FORMATETC *, STGMEDIUM *, BOOL )
{
return E_NOTIMPL;
}
// IDataObject->DAdvise
STDMETHODIMP CXTDataObject::DAdvise( FORMATETC *, DWORD, IAdviseSink *, DWORD * )
{
return E_NOTIMPL;
}
// IDataObject->DUnadvise
STDMETHODIMP CXTDataObject::DUnadvise( DWORD )
{
return E_NOTIMPL;
}
// IDataObject->EnumDAdvise
STDMETHODIMP CXTDataObject::EnumDAdvise( IEnumSTATDATA ** )
{
return E_NOTIMPL;
}
// for our convenience
CXTDataObject::operator IDataObject*( )
{
return static_cast < IDataObject* >( this );
}
inline
DataFlavor CXTDataObject::formatEtcToDataFlavor( const FORMATETC& aFormatEtc ) const
{
DataFlavor aFlavor;
if ( m_FormatRegistrar.hasSynthesizedLocale( ) )
aFlavor = m_DataFormatTranslator.getDataFlavorFromFormatEtc(
aFormatEtc.cfFormat, CFormatRegistrar::getSynthesizedLocale());
else
aFlavor = m_DataFormatTranslator.getDataFlavorFromFormatEtc(aFormatEtc.cfFormat);
if ( !aFlavor.MimeType.getLength( ) )
throw UnsupportedFlavorException( );
return aFlavor;
}
inline void CXTDataObject::InitializeFormatEtcContainer( )
{
if ( !m_bFormatEtcContainerInitialized )
{
m_FormatRegistrar.RegisterFormats( m_XTransferable, m_FormatEtcContainer );
m_bFormatEtcContainerInitialized = true ;
}
}
CEnumFormatEtc::CEnumFormatEtc( LPUNKNOWN lpUnkOuter, const CFormatEtcContainer& aFormatEtcContainer ) :
m_nRefCnt( 0 ),
m_lpUnkOuter( lpUnkOuter ),
m_FormatEtcContainer( aFormatEtcContainer )
{
Reset( );
}
// IUnknown->QueryInterface
STDMETHODIMP CEnumFormatEtc::QueryInterface( REFIID iid, void ** ppvObject )
{
if ( nullptr == ppvObject )
return E_INVALIDARG;
HRESULT hr = E_NOINTERFACE;
*ppvObject = nullptr;
if ( ( __uuidof( IUnknown ) == iid ) ||
( __uuidof( IEnumFORMATETC ) == iid ) )
{
*ppvObject = static_cast < IUnknown* >( this );
static_cast < LPUNKNOWN >( *ppvObject )->AddRef( );
hr = S_OK;
}
return hr;
}
// IUnknown->AddRef
STDMETHODIMP_(ULONG) CEnumFormatEtc::AddRef( )
{
// keep the dataobject alive
m_lpUnkOuter->AddRef( );
return InterlockedIncrement( &m_nRefCnt );
}
// IUnknown->Release
STDMETHODIMP_(ULONG) CEnumFormatEtc::Release( )
{
// release the outer dataobject
m_lpUnkOuter->Release( );
ULONG nRefCnt = InterlockedDecrement( &m_nRefCnt );
if ( 0 == nRefCnt )
delete this ;
return nRefCnt;
}
// IEnumFORMATETC->Next
STDMETHODIMP CEnumFormatEtc::Next( ULONG nRequested, FORMATETC * lpDest, ULONG* lpFetched )
{
if ( ( nRequested < 1 ) ||
(( nRequested > 1 ) && ( nullptr == lpFetched )) ||
IsBadWritePtr( lpDest, sizeof ( FORMATETC ) * nRequested ) )
return E_INVALIDARG;
sal_uInt32 nFetched = m_FormatEtcContainer.nextFormatEtc( lpDest, nRequested );
if ( nullptr != lpFetched )
*lpFetched = nFetched;
return (nFetched == nRequested) ? S_OK : S_FALSE;
}
// IEnumFORMATETC->Skip
STDMETHODIMP CEnumFormatEtc::Skip( ULONG celt )
{
return m_FormatEtcContainer.skipFormatEtc( celt ) ? S_OK : S_FALSE;
}
// IEnumFORMATETC->Reset
STDMETHODIMP CEnumFormatEtc::Reset( )
{
m_FormatEtcContainer.beginEnumFormatEtc( );
return S_OK;
}
// IEnumFORMATETC->Clone
STDMETHODIMP CEnumFormatEtc::Clone( IEnumFORMATETC** ppenum )
{
if ( nullptr == ppenum )
return E_INVALIDARG;
*ppenum = new CEnumFormatEtc( m_lpUnkOuter, m_FormatEtcContainer );
static_cast < LPUNKNOWN >( *ppenum )->AddRef( );
return S_OK;
}
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