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libreoffice/basic/source/classes/image.cxx
Jacek Fraczek f004aa9951 tdf#89307: Removed SvRef::operator T*() 
Conditional statements are using SvRef::Is() method.
Changed static_cast<T*>(svRef<T>) occurances to svRef.get().
Added operator == and != to SvRef.

SbxObject::Execute is using SbxVariableRef internally.
SbxObject::FindQualified is using SbxVariableRef internally.

Change-Id: I45b553e35d8fca9bf71163e6eefc60802a066395
Reviewed-on: https://gerrit.libreoffice.org/29621
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
2016-10-10 08:48:30 +00:00

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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 <tools/stream.hxx>
#include <tools/tenccvt.hxx>
#include <osl/thread.h>
#include <basic/sbx.hxx>
#include "sb.hxx"
#include <string.h>
#include "image.hxx"
#include <codegen.hxx>
#include <memory>
SbiImage::SbiImage()
{
pStringOff = nullptr;
pStrings = nullptr;
pCode = nullptr;
pLegacyPCode = nullptr;
nFlags = SbiImageFlags::NONE;
nStrings = 0;
nStringSize= 0;
nCodeSize = 0;
nLegacyCodeSize =
nDimBase = 0;
bInit =
bError = false;
bFirstInit = true;
eCharSet = osl_getThreadTextEncoding();
nStringIdx = 0;
nStringOff = 0;
}
SbiImage::~SbiImage()
{
Clear();
}
void SbiImage::Clear()
{
delete[] pStringOff;
delete[] pStrings;
delete[] pCode;
ReleaseLegacyBuffer();
pStringOff = nullptr;
pStrings = nullptr;
pCode = nullptr;
nFlags = SbiImageFlags::NONE;
nStrings = 0;
nStringSize= 0;
nLegacyCodeSize = 0;
nCodeSize = 0;
eCharSet = osl_getThreadTextEncoding();
nDimBase = 0;
bError = false;
}
/**************************************************************************
*
* Service-Routines for Load/Store
*
**************************************************************************/
bool SbiGood( SvStream& r )
{
return !r.IsEof() && r.GetError() == SVSTREAM_OK;
}
// Open Record
sal_uInt64 SbiOpenRecord( SvStream& r, FileOffset nSignature, sal_uInt16 nElem )
{
sal_uInt64 nPos = r.Tell();
r.WriteUInt16( static_cast<sal_uInt16>( nSignature ) )
.WriteInt32( 0 ).WriteUInt16( nElem );
return nPos;
}
// Close Record
void SbiCloseRecord( SvStream& r, sal_uInt64 nOff )
{
sal_uInt64 nPos = r.Tell();
r.Seek( nOff + 2 );
r.WriteInt32(nPos - nOff - 8 );
r.Seek( nPos );
}
/**************************************************************************
*
* Load/Store
*
**************************************************************************/
bool SbiImage::Load( SvStream& r, sal_uInt32& nVersion )
{
sal_uInt16 nSign, nCount;
sal_uInt32 nLen, nOff;
Clear();
// Read Master-Record
r.ReadUInt16( nSign ).ReadUInt32( nLen ).ReadUInt16( nCount );
sal_uInt64 nLast = r.Tell() + nLen;
sal_uInt32 nCharSet; // System charset
sal_uInt32 lDimBase;
sal_uInt16 nReserved1;
sal_uInt32 nReserved2;
sal_uInt32 nReserved3;
bool bBadVer = false;
if( nSign == static_cast<sal_uInt16>( FileOffset::Module ) )
{
sal_uInt16 nTmpFlags;
r.ReadUInt32( nVersion ).ReadUInt32( nCharSet ).ReadUInt32( lDimBase )
.ReadUInt16( nTmpFlags ).ReadUInt16( nReserved1 ).ReadUInt32( nReserved2 ).ReadUInt32( nReserved3 );
nFlags = static_cast<SbiImageFlags>(nTmpFlags);
eCharSet = nCharSet;
eCharSet = GetSOLoadTextEncoding( eCharSet );
bBadVer = ( nVersion > B_CURVERSION );
nDimBase = (sal_uInt16) lDimBase;
}
bool bLegacy = ( nVersion < B_EXT_IMG_VERSION );
sal_uInt64 nNext;
while( ( nNext = r.Tell() ) < nLast )
{
r.ReadUInt16( nSign ).ReadUInt32( nLen ).ReadUInt16( nCount );
nNext += nLen + 8;
if( r.GetError() == SVSTREAM_OK )
{
switch( static_cast<FileOffset>( nSign ) )
{
case FileOffset::Name:
aName = r.ReadUniOrByteString(eCharSet);
break;
case FileOffset::Comment:
aComment = r.ReadUniOrByteString(eCharSet );
break;
case FileOffset::Source:
{
aOUSource = r.ReadUniOrByteString(eCharSet);
break;
}
case FileOffset::ExtSource:
{
//assuming an empty string with just the lead 32bit/16bit len indicator
const size_t nMinStringSize = (eCharSet == RTL_TEXTENCODING_UNICODE) ? 4 : 2;
const sal_uInt64 nMaxStrings = r.remainingSize() / nMinStringSize;
if (nCount > nMaxStrings)
{
SAL_WARN("basic", "Parsing error: " << nMaxStrings <<
" max possible entries, but " << nCount << " claimed, truncating");
nCount = nMaxStrings;
}
for( sal_uInt16 j = 0; j < nCount; ++j)
{
aOUSource += r.ReadUniOrByteString(eCharSet);
}
break;
}
case FileOffset::PCode:
if( bBadVer ) break;
pCode = new char[ nLen ];
nCodeSize = nLen;
r.ReadBytes(pCode, nCodeSize);
if ( bLegacy )
{
ReleaseLegacyBuffer(); // release any previously held buffer
nLegacyCodeSize = (sal_uInt16) nCodeSize;
pLegacyPCode = pCode;
PCodeBuffConvertor< sal_uInt16, sal_uInt32 > aLegacyToNew( reinterpret_cast<sal_uInt8*>(pLegacyPCode), nLegacyCodeSize );
aLegacyToNew.convert();
pCode = reinterpret_cast<char*>(aLegacyToNew.GetBuffer());
nCodeSize = aLegacyToNew.GetSize();
// we don't release the legacy buffer
// right now, thats because the module
// needs it to fix up the method
// nStart members. When that is done
// the module can release the buffer
// or it can wait until this routine
// is called again or when this class // destructs all of which will trigger
// release of the buffer.
}
break;
case FileOffset::Publics:
case FileOffset::PoolDir:
case FileOffset::SymPool:
case FileOffset::LineRanges:
break;
case FileOffset::StringPool:
{
if( bBadVer ) break;
//assuming an empty string with just the lead 32bit len indicator
const sal_uInt64 nMinStringSize = 4;
const sal_uInt64 nMaxStrings = r.remainingSize() / nMinStringSize;
if (nCount > nMaxStrings)
{
SAL_WARN("basic", "Parsing error: " << nMaxStrings <<
" max possible entries, but " << nCount << " claimed, truncating");
nCount = nMaxStrings;
}
MakeStrings( nCount );
short i;
for( i = 0; i < nStrings && SbiGood( r ); i++ )
{
r.ReadUInt32( nOff );
pStringOff[ i ] = (sal_uInt16) nOff;
}
r.ReadUInt32( nLen );
if( SbiGood( r ) )
{
delete [] pStrings;
pStrings = new sal_Unicode[ nLen ];
nStringSize = (sal_uInt16) nLen;
std::unique_ptr<char[]> pByteStrings(new char[ nLen ]);
r.ReadBytes(pByteStrings.get(), nStringSize);
for( short j = 0; j < nStrings; j++ )
{
sal_uInt16 nOff2 = (sal_uInt16) pStringOff[ j ];
OUString aStr( pByteStrings.get() + nOff2, strlen(pByteStrings.get() + nOff2), eCharSet );
memcpy( pStrings + nOff2, aStr.getStr(), (aStr.getLength() + 1) * sizeof( sal_Unicode ) );
}
}
break;
}
case FileOffset::UserTypes:
{
//assuming an empty string with just the lead 32bit/16bit len indicator
const size_t nMinStringSize = (eCharSet == RTL_TEXTENCODING_UNICODE) ? 4 : 2;
const sal_uInt64 nMinRecordSize = nMinStringSize + sizeof(sal_Int16);
const sal_uInt64 nMaxRecords = r.remainingSize() / nMinRecordSize;
if (nCount > nMaxRecords)
{
SAL_WARN("basic", "Parsing error: " << nMaxRecords <<
" max possible entries, but " << nCount << " claimed, truncating");
nCount = nMaxRecords;
}
// User defined types
for (sal_uInt16 i = 0; i < nCount; i++)
{
OUString aTypeName = r.ReadUniOrByteString(eCharSet);
sal_uInt16 nTypeMembers;
r.ReadUInt16(nTypeMembers);
const sal_uInt64 nMaxTypeMembers = r.remainingSize() / 8;
if (nTypeMembers > nMaxTypeMembers)
{
SAL_WARN("basic", "Parsing error: " << nMaxTypeMembers <<
" max possible entries, but " << nTypeMembers << " claimed, truncating");
nTypeMembers = nMaxTypeMembers;
}
SbxObject *pType = new SbxObject(aTypeName);
SbxArray *pTypeMembers = pType->GetProperties();
for (sal_uInt16 j = 0; j < nTypeMembers; j++)
{
OUString aMemberName = r.ReadUniOrByteString(eCharSet);
sal_Int16 aIntMemberType;
r.ReadInt16(aIntMemberType);
SbxDataType aMemberType = static_cast< SbxDataType > ( aIntMemberType );
SbxProperty *pTypeElem = new SbxProperty( aMemberName, aMemberType );
sal_uInt32 aIntFlag;
r.ReadUInt32(aIntFlag);
SbxFlagBits nElemFlags = static_cast< SbxFlagBits > ( aIntFlag );
pTypeElem->SetFlags(nElemFlags);
sal_Int16 hasObject;
r.ReadInt16(hasObject);
if (hasObject == 1)
{
if(aMemberType == SbxOBJECT)
{
// nested user defined types
// declared before use, so it is ok to reference it by name on load
OUString aNestedTypeName = r.ReadUniOrByteString(eCharSet);
SbxObject* pNestedTypeObj = static_cast< SbxObject* >( rTypes->Find( aNestedTypeName, SbxClassType::Object ) );
if (pNestedTypeObj)
{
SbxObject* pCloneObj = cloneTypeObjectImpl( *pNestedTypeObj );
pTypeElem->PutObject( pCloneObj );
}
}
else
{
// an array
SbxDimArray* pArray = new SbxDimArray();
sal_Int16 isFixedSize;
r.ReadInt16(isFixedSize);
if (isFixedSize == 1)
pArray->setHasFixedSize( true );
sal_Int32 nDims;
r.ReadInt32(nDims);
for (sal_Int32 d = 0; d < nDims; d++)
{
sal_Int32 lBound;
sal_Int32 uBound;
r.ReadInt32(lBound).ReadInt32(uBound);
pArray->unoAddDim32(lBound, uBound);
}
pTypeElem->PutObject( pArray );
}
}
pTypeMembers->Insert( pTypeElem, pTypeMembers->Count() );
}
pType->Remove( "Name", SbxClassType::DontCare );
pType->Remove( "Parent", SbxClassType::DontCare );
AddType(pType);
}
break;
}
case FileOffset::ModEnd:
goto done;
default:
break;
}
}
else
{
break;
}
r.Seek( nNext );
}
done:
r.Seek( nLast );
if( !SbiGood( r ) )
{
bError = true;
}
return !bError;
}
bool SbiImage::Save( SvStream& r, sal_uInt32 nVer )
{
bool bLegacy = ( nVer < B_EXT_IMG_VERSION );
// detect if old code exceeds legacy limits
// if so, then disallow save
if ( bLegacy && ExceedsLegacyLimits() )
{
SbiImage aEmptyImg;
aEmptyImg.aName = aName;
aEmptyImg.Save( r, B_LEGACYVERSION );
return true;
}
// First of all the header
sal_uInt64 nStart = SbiOpenRecord( r, FileOffset::Module, 1 );
sal_uInt64 nPos;
eCharSet = GetSOStoreTextEncoding( eCharSet );
if ( bLegacy )
{
r.WriteInt32( B_LEGACYVERSION );
}
else
{
r.WriteInt32( B_CURVERSION );
}
r .WriteInt32( eCharSet )
.WriteInt32( nDimBase )
.WriteInt16( static_cast<sal_uInt16>(nFlags) )
.WriteInt16( 0 )
.WriteInt32( 0 )
.WriteInt32( 0 );
// Name?
if( !aName.isEmpty() && SbiGood( r ) )
{
nPos = SbiOpenRecord( r, FileOffset::Name, 1 );
r.WriteUniOrByteString( aName, eCharSet );
SbiCloseRecord( r, nPos );
}
// Comment?
if( !aComment.isEmpty() && SbiGood( r ) )
{
nPos = SbiOpenRecord( r, FileOffset::Comment, 1 );
r.WriteUniOrByteString( aComment, eCharSet );
SbiCloseRecord( r, nPos );
}
// Source?
if( !aOUSource.isEmpty() && SbiGood( r ) )
{
nPos = SbiOpenRecord( r, FileOffset::Source, 1 );
r.WriteUniOrByteString( aOUSource, eCharSet );
SbiCloseRecord( r, nPos );
}
// Binary data?
if( pCode && SbiGood( r ) )
{
nPos = SbiOpenRecord( r, FileOffset::PCode, 1 );
if ( bLegacy )
{
ReleaseLegacyBuffer(); // release any previously held buffer
PCodeBuffConvertor< sal_uInt32, sal_uInt16 > aNewToLegacy( reinterpret_cast<sal_uInt8*>(pCode), nCodeSize );
aNewToLegacy.convert();
pLegacyPCode = reinterpret_cast<char*>(aNewToLegacy.GetBuffer());
nLegacyCodeSize = aNewToLegacy.GetSize();
r.WriteBytes(pLegacyPCode, nLegacyCodeSize);
}
else
{
r.WriteBytes(pCode, nCodeSize);
}
SbiCloseRecord( r, nPos );
}
// String-Pool?
if( nStrings )
{
nPos = SbiOpenRecord( r, FileOffset::StringPool, nStrings );
// For every String:
// sal_uInt32 Offset of the Strings in the Stringblock
short i;
for( i = 0; i < nStrings && SbiGood( r ); i++ )
{
r.WriteUInt32( pStringOff[ i ] );
}
// Then the String-Block
std::unique_ptr<char[]> pByteStrings(new char[ nStringSize ]);
for( i = 0; i < nStrings; i++ )
{
sal_uInt16 nOff = (sal_uInt16) pStringOff[ i ];
OString aStr(OUStringToOString(OUString(pStrings + nOff), eCharSet));
memcpy( pByteStrings.get() + nOff, aStr.getStr(), (aStr.getLength() + 1) * sizeof( char ) );
}
r.WriteUInt32( nStringSize );
r.WriteBytes(pByteStrings.get(), nStringSize);
pByteStrings.reset();
SbiCloseRecord( r, nPos );
}
// User defined types
if ( rTypes.Is() )
{
sal_uInt16 nTypes = rTypes->Count();
if (nTypes > 0 )
{
nPos = SbiOpenRecord( r, FileOffset::UserTypes, nTypes );
for (sal_uInt16 i = 0; i < nTypes; i++)
{
SbxObject* pType = static_cast< SbxObject* > ( rTypes->Get(i) );
OUString aTypeName = pType->GetClassName();
r.WriteUniOrByteString( aTypeName, eCharSet );
SbxArray *pTypeMembers = pType->GetProperties();
sal_uInt16 nTypeMembers = pTypeMembers->Count();
r.WriteInt16(nTypeMembers);
for (sal_uInt16 j = 0; j < nTypeMembers; j++)
{
SbxProperty* pTypeElem = static_cast< SbxProperty* > ( pTypeMembers->Get(j) );
OUString aElemName = pTypeElem->GetName();
r.WriteUniOrByteString( aElemName, eCharSet );
SbxDataType dataType = pTypeElem->GetType();
r.WriteInt16(dataType);
SbxFlagBits nElemFlags = pTypeElem->GetFlags();
r.WriteUInt32(static_cast< sal_uInt32 > (nElemFlags) );
SbxBase* pElemObject = pTypeElem->GetObject();
if (pElemObject)
{
r.WriteInt16(1); // has elem Object
if( dataType == SbxOBJECT )
{
// nested user defined types
// declared before use, so it is ok to reference it by name on load
SbxObject* pNestedType = static_cast< SbxObject* > ( pElemObject );
r.WriteUniOrByteString( pNestedType->GetClassName(), eCharSet );
}
else
{
// an array
SbxDimArray* pArray = static_cast< SbxDimArray* > ( pElemObject );
bool bFixedSize = pArray->hasFixedSize();
if (bFixedSize)
r.WriteInt16(1);
else
r.WriteInt16(0);
sal_Int32 nDims = pArray->GetDims();
r.WriteInt32(nDims);
for (sal_Int32 d = 0; d < nDims; d++)
{
sal_Int32 lBound;
sal_Int32 uBound;
pArray->GetDim32(d, lBound, uBound);
r.WriteInt32(lBound).WriteInt32(uBound);
}
}
}
else
r.WriteInt16(0); // no elem Object
}
}
SbiCloseRecord( r, nPos );
}
}
// Set overall length
SbiCloseRecord( r, nStart );
if( !SbiGood( r ) )
{
bError = true;
}
return !bError;
}
/**************************************************************************
*
* Routines called by the compiler
*
**************************************************************************/
void SbiImage::MakeStrings( short nSize )
{
nStrings = 0;
nStringIdx = 0;
nStringOff = 0;
nStringSize = 1024;
pStrings = new sal_Unicode[ nStringSize ];
pStringOff = new sal_uInt32[ nSize ];
nStrings = nSize;
memset( pStringOff, 0, nSize * sizeof( sal_uInt32 ) );
memset( pStrings, 0, nStringSize * sizeof( sal_Unicode ) );
}
// Add a string to StringPool. The String buffer is dynamically
// growing in 1K-Steps
void SbiImage::AddString( const OUString& r )
{
if( nStringIdx >= nStrings )
{
bError = true;
}
if( !bError )
{
sal_Int32 len = r.getLength() + 1;
sal_uInt32 needed = nStringOff + len;
if( needed > 0xFFFFFF00 )
{
bError = true; // out of mem!
}
else if( needed > nStringSize )
{
sal_uInt32 nNewLen = needed + 1024;
nNewLen &= 0xFFFFFC00; // trim to 1K border
sal_Unicode* p = new sal_Unicode[nNewLen];
memcpy( p, pStrings, nStringSize * sizeof( sal_Unicode ) );
delete[] pStrings;
pStrings = p;
nStringSize = sal::static_int_cast< sal_uInt16 >(nNewLen);
}
if( !bError )
{
pStringOff[ nStringIdx++ ] = nStringOff;
memcpy( pStrings + nStringOff, r.getStr(), len * sizeof( sal_Unicode ) );
nStringOff = nStringOff + len;
// Last String? The update the size of the buffer
if( nStringIdx >= nStrings )
{
nStringSize = nStringOff;
}
}
}
}
// Add code block
// The block was fetched by the compiler from class SbBuffer and
// is already created with new. Additionally it contains all Integers
// in Big Endian format, so can be directly read/written.
void SbiImage::AddCode( char* p, sal_uInt32 s )
{
pCode = p;
nCodeSize = s;
}
// Add user type
void SbiImage::AddType(SbxObject* pObject)
{
if( !rTypes.Is() )
{
rTypes = new SbxArray;
}
SbxObject *pCopyObject = new SbxObject(*pObject);
rTypes->Insert (pCopyObject,rTypes->Count());
}
void SbiImage::AddEnum(SbxObject* pObject) // Register enum type
{
if( !rEnums.Is() )
{
rEnums = new SbxArray;
}
rEnums->Insert( pObject, rEnums->Count() );
}
/**************************************************************************
*
* Accessing the image
*
**************************************************************************/
// Note: IDs start with 1
OUString SbiImage::GetString( short nId ) const
{
if( nId && nId <= nStrings )
{
sal_uInt32 nOff = pStringOff[ nId - 1 ];
sal_Unicode* pStr = pStrings + nOff;
// #i42467: Special treatment for vbNullChar
if( *pStr == 0 )
{
sal_uInt32 nNextOff = (nId < nStrings) ? pStringOff[ nId ] : nStringOff;
sal_uInt32 nLen = nNextOff - nOff - 1;
if( nLen == 1 )
{
// Force length 1 and make char 0 afterwards
OUString aNullCharStr( (sal_Unicode)0);
return aNullCharStr;
}
}
else
{
return OUString(pStr);
}
}
return OUString();
}
const SbxObject* SbiImage::FindType (const OUString& aTypeName) const
{
return rTypes.Is() ? static_cast<SbxObject*>(rTypes->Find(aTypeName,SbxClassType::Object)) : nullptr;
}
sal_uInt16 SbiImage::CalcLegacyOffset( sal_Int32 nOffset )
{
return SbiCodeGen::calcLegacyOffSet( reinterpret_cast<sal_uInt8*>(pCode), nOffset ) ;
}
sal_uInt32 SbiImage::CalcNewOffset( sal_Int16 nOffset )
{
return SbiCodeGen::calcNewOffSet( reinterpret_cast<sal_uInt8*>(pLegacyPCode), nOffset ) ;
}
void SbiImage::ReleaseLegacyBuffer()
{
delete[] pLegacyPCode;
pLegacyPCode = nullptr;
nLegacyCodeSize = 0;
}
bool SbiImage::ExceedsLegacyLimits()
{
return ( nStringSize > 0xFF00 ) || ( CalcLegacyOffset( nCodeSize ) > 0xFF00 );
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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