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Handler.cpp
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Handler.cpp
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#define INITGUID
#include "Alloc.h"
#include "ComTry.h"
#include "MyCom.h"
#include "IArchive.h"
#include "MyVector.h"
#include "CopyCoder.h"
#include "LimitedStreams.h"
#include "PropVariant.h"
#include "ProgressUtils.h"
#include "RegisterArc.h"
#include "StringConvert.h"
#include "libvpk++.h"
#include "robin_hood.h"
#include <cwchar>
class CHandler :
public IInArchive, public IInArchiveGetStream, // reading
public IOutArchive, public ISetProperties, public IMultiVolumeOutArchive, // writing
public CMyUnknownImp
{
public:
CHandler( bool writeV1 = false ) : writeV1( writeV1 ) {}
MY_UNKNOWN_IMP5( IInArchive, IInArchiveGetStream, IOutArchive, ISetProperties, IMultiVolumeOutArchive )
INTERFACE_IInArchive( override )
INTERFACE_IOutArchive( override )
STDMETHOD( GetStream )( UInt32 index, ISequentialInStream** stream ) override;
STDMETHOD( SetProperties )( const wchar_t* const* names, const PROPVARIANT* values, UInt32 numProps ) override;
STDMETHOD( GetMultiArchiveNameFmt )( PROPVARIANT* nameMod, PROPVARIANT* prefix, PROPVARIANT* postfix, BOOL* numberAfterExt, UInt32* digitCount ) override;
private:
const bool writeV1;
libvpk::VPKSet vpk;
CMyComPtr<IInStream> basePak;
CObjectVector<CMyComPtr<IInStream>> paks;
UInt64 size = 0;
bool missingFiles = false;
};
STDMETHODIMP CHandler::Open( IInStream* inStream, const UInt64* maxCheckStartPosition, IArchiveOpenCallback* callback ) MY_NO_THROW_DECL_ONLY
{
try
{
RINOK( vpk.open( inStream, callback ) );
const auto& f = vpk.files();
int largestId = -1;
int preloadSize = 0;
UInt64 s = 0;
for ( size_t i = 0; i < f.size(); i++ )
{
const auto& file = f[i].second;
if ( const auto arc = file.archiveIdx; arc != 0x7FFF && arc > largestId )
largestId = arc;
if ( const auto preload = file.preloadLength; preload > preloadSize )
preloadSize = preload;
s += file.fileLength;
}
size = s;
if ( largestId != -1 )
{
CMyComPtr<IArchiveOpenVolumeCallback> volCallback;
RINOK( callback->QueryInterface( IID_IArchiveOpenVolumeCallback, (void**)&volCallback ) );
if ( !volCallback )
return E_FAIL;
UString name;
{
NWindows::NCOM::CPropVariant prop;
RINOK( volCallback->GetProperty( kpidName, &prop ) );
if ( prop.vt != VT_BSTR )
return E_FAIL;
name = prop.bstrVal;
}
paks.ClearAndReserve( largestId + 1 );
wchar_t base[MAX_PATH * 4];
auto end = name.ReverseFind_Dot();
if ( end > 3 && name[end - 1] == L'r' && name[end - 2] == L'i' && name[end - 3] == L'd' )
name.DeleteFrom( end - 3 );
else
{
name.DeleteFrom( end );
name += '_';
}
for ( int i = 0; i < largestId + 1; i++ )
{
swprintf_s( base, L"%s%03d.vpk", name.GetBuf(), i );
CMyComPtr<IInStream> s;
if ( volCallback->GetStream( base, &s ) != S_OK || s == nullptr )
missingFiles = true;
paks.Add( s );
}
}
if ( preloadSize > 0 || largestId == -1 )
basePak = inStream;
return S_OK;
}
catch ( ... )
{
Close();
return E_OUTOFMEMORY;
}
}
STDMETHODIMP CHandler::Close() MY_NO_THROW_DECL_ONLY
{
basePak.Release();
paks.Clear();
vpk.clear();
size = 0;
return S_OK;
}
STDMETHODIMP CHandler::GetNumberOfItems( UInt32* numItems ) MY_NO_THROW_DECL_ONLY
{
*numItems = static_cast<UInt32>( vpk.files().size() );
return S_OK;
}
static constexpr const PROPID kProps[] =
{
kpidPath,
kpidSize,
kpidCRC,
kpidVolume,
kpidOffset
};
static constexpr const PROPID kArcProps[] =
{
kpidUnpackVer,
kpidIsVolume,
kpidNumVolumes,
kpidHeadersSize,
kpidWarning,
kpidTotalPhySize,
kpidReadOnly
};
IMP_IInArchive_Props
IMP_IInArchive_ArcProps
STDMETHODIMP CHandler::GetArchiveProperty( PROPID propID, PROPVARIANT* value ) MY_NO_THROW_DECL_ONLY
{
COM_TRY_BEGIN
NWindows::NCOM::CPropVariant prop;
switch ( propID )
{
case kpidTotalPhySize:
{
const auto& h = vpk.header();
prop = size +
( h.version == 1 ? sizeof( libvpk::meta::VPKHeader1 ) : sizeof( libvpk::meta::VPKHeader2 ) )
+ h.treeSize + h.archiveMD5SectionSize + h.otherMD5SectionSize + h.signatureSectionSize;
break;
}
case kpidHeadersSize:
{
const auto& h = vpk.header();
prop =
( h.version == 1 ? sizeof( libvpk::meta::VPKHeader1 ) : sizeof( libvpk::meta::VPKHeader2 ) )
+ h.treeSize + h.archiveMD5SectionSize + h.otherMD5SectionSize + h.signatureSectionSize;
break;
}
case kpidNumVolumes:
prop = static_cast<UInt32>( paks.Size() );
break;
case kpidUnpackVer:
prop = static_cast<UInt32>( vpk.header().version );
break;
case kpidReadOnly:
prop = true;
break;
case kpidIsVolume:
if ( !paks.IsEmpty() )
prop = true;
break;
case kpidWarning:
if ( missingFiles )
prop = "Missing vpk files!";
break;
}
prop.Detach( value );
return S_OK;
COM_TRY_END
}
STDMETHODIMP CHandler::GetProperty( UInt32 index, PROPID propID, PROPVARIANT* value ) MY_NO_THROW_DECL_ONLY
{
COM_TRY_BEGIN
const auto& i = vpk.files().at( index );
const auto& item = i.second;
NWindows::NCOM::CPropVariant prop;
switch ( propID )
{
case kpidPath:
prop = MultiByteToUnicodeString( i.first.c_str(), CP_ACP );
break;
case kpidSize:
case kpidPackSize:
prop = static_cast<UInt64>( item.fileLength );
break;
case kpidCRC:
prop = item.crc;
break;
case kpidVolume:
if ( item.archiveIdx != 0x7FFF )
prop = static_cast<UInt32>( item.archiveIdx );
break;
case kpidOffset:
prop = static_cast<UInt32>( item.fileOffset );
break;
default:
break;
}
prop.Detach( value );
return S_OK;
COM_TRY_END
}
STDMETHODIMP CHandler::Extract( const UInt32* indices, UInt32 numItems, Int32 testMode, IArchiveExtractCallback* extractCallback ) MY_NO_THROW_DECL_ONLY
{
COM_TRY_BEGIN
const auto& f = vpk.files();
const bool allFilesMode = numItems == (UInt32)(Int32)-1;
if ( allFilesMode )
numItems = static_cast<UInt32>( f.size() );
UInt64 totalSize = allFilesMode ? size : 0;
if ( !allFilesMode )
{
for ( UInt32 i = 0; i < numItems; i++ )
totalSize += f[indices[i]].second.fileLength;
}
RINOK( extractCallback->SetTotal( totalSize ) );
CMyComPtr<CLocalProgress> progress = new CLocalProgress;
progress->Init( extractCallback, false );
CMyComPtr<ICompressCoder> copyCoder = new NCompress::CCopyCoder;
CMyComPtr<CLimitedSequentialOutStream> outStream = new CLimitedSequentialOutStream;
const Int32 askMode = testMode ? NArchive::NExtract::NAskMode::kTest : NArchive::NExtract::NAskMode::kExtract;
UInt64 currentTotalSize = 0;
for ( UInt32 i = 0; i < numItems; i++ )
{
progress->InSize = progress->OutSize = currentTotalSize;
RINOK( progress->SetCur() );
CMyComPtr<ISequentialOutStream> realOutStream;
UInt32 index = allFilesMode ? i : indices[i];
RINOK( extractCallback->GetStream( index, &realOutStream, askMode ) );
const auto& item = f[index].second;
currentTotalSize += item.fileLength;
if ( !testMode && !realOutStream )
continue;
if ( !item.fileLength )
{
RINOK( extractCallback->PrepareOperation( askMode ) );
realOutStream->Write( "", 0, nullptr );
RINOK( extractCallback->SetOperationResult( NArchive::NExtract::NOperationResult::kOK ) );
continue;
}
if ( missingFiles && !paks[item.archiveIdx] )
{
RINOK( extractCallback->PrepareOperation( askMode ) );
realOutStream.Release();
RINOK( extractCallback->SetOperationResult( NArchive::NExtract::NOperationResult::kUnavailable ) );
continue;
}
RINOK( extractCallback->PrepareOperation( askMode ) );
outStream->SetStream( realOutStream );
realOutStream.Release();
outStream->Init( item.fileLength );
Int32 opRes;
CMyComPtr<ISequentialInStream> inStream;
HRESULT res = GetStream( index, &inStream );
if ( res == E_NOTIMPL )
opRes = NArchive::NExtract::NOperationResult::kUnsupportedMethod;
else if ( res != S_OK )
opRes = NArchive::NExtract::NOperationResult::kDataError;
else
{
RINOK( copyCoder->Code( inStream, outStream, nullptr, nullptr, progress ) );
opRes = outStream->IsFinishedOK() ? NArchive::NExtract::NOperationResult::kOK : NArchive::NExtract::NOperationResult::kDataError;
}
outStream->ReleaseStream();
RINOK( extractCallback->SetOperationResult( opRes ) );
}
return S_OK;
COM_TRY_END
}
STDMETHODIMP CHandler::GetStream( UInt32 index, ISequentialInStream** stream )
{
*stream = nullptr;
const auto& i = vpk.files().at( index ).second;
if ( missingFiles && !paks[i.archiveIdx] )
return HRESULT_FROM_WIN32( ERROR_FILE_NOT_FOUND );
if ( !i.fileLength )
{
*stream = new CEmptyInStream();
( *stream )->AddRef();
return S_OK;
}
const auto& h = vpk.header();
const auto offset = i.fileOffset + ( i.archiveIdx != 0x7FFF ? 0 : h.treeSize + ( h.version == 1 ? sizeof( libvpk::meta::VPKHeader1 ) : sizeof( libvpk::meta::VPKHeader ) ) );
if ( i.preloadLength == 0 )
return CreateLimitedInStream( i.archiveIdx == 0x7FFF ? basePak : paks[i.archiveIdx], offset, i.fileLength, stream );
CMyComPtr<CLimitedCachedInStream> limitedStream = new CLimitedCachedInStream;
limitedStream->SetStream( i.archiveIdx == 0x7FFF ? basePak : paks[i.archiveIdx], offset );
auto& preload = limitedStream->Buffer;
preload.Alloc( i.preloadLength );
RINOK( basePak->Seek( i.preloadOffset, STREAM_SEEK_SET, nullptr ) );
RINOK( ReadStream_FAIL( basePak, preload, i.preloadLength ) );
limitedStream->SetCache( i.preloadLength, 0 );
RINOK( limitedStream->InitAndSeek( 0, i.fileLength ) );
*stream = limitedStream.Detach();
return S_OK;
}
STDMETHODIMP CHandler::GetFileTimeType( UInt32* type )
{
*type = NFileTimeType::kUnix; // technically VPK doesn't support time information
return S_OK;
}
#define CRC32_INIT_VALUE 0xFFFFFFFFUL
#define CRC32_XOR_VALUE 0xFFFFFFFFUL
typedef unsigned int CRC32_t;
#define NUM_BYTES 256
static constexpr const CRC32_t pulCRCTable[NUM_BYTES] =
{
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba,
0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec,
0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940,
0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116,
0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a,
0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818,
0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c,
0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086,
0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4,
0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe,
0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252,
0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60,
0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04,
0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a,
0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e,
0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0,
0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6,
0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
};
void CRC32_Init( CRC32_t& pulCRC )
{
pulCRC = CRC32_INIT_VALUE;
}
void CRC32_Final( CRC32_t& pulCRC )
{
pulCRC ^= CRC32_XOR_VALUE;
}
void CRC32_ProcessBuffer( CRC32_t& pulCRC, const void* pBuffer, int nBuffer )
{
CRC32_t ulCrc = pulCRC;
auto pb = reinterpret_cast<const unsigned char*>( pBuffer );
unsigned int nFront;
int nMain;
JustAfew:
switch ( nBuffer )
{
case 7:
ulCrc = pulCRCTable[*pb++ ^ static_cast<unsigned char>( ulCrc )] ^ ( ulCrc >> 8 );
[[fallthrough]];
case 6:
ulCrc = pulCRCTable[*pb++ ^ static_cast<unsigned char>( ulCrc )] ^ ( ulCrc >> 8 );
[[fallthrough]];
case 5:
ulCrc = pulCRCTable[*pb++ ^ static_cast<unsigned char>( ulCrc )] ^ ( ulCrc >> 8 );
[[fallthrough]];
case 4:
ulCrc ^= *reinterpret_cast<const CRC32_t*>( pb );
ulCrc = pulCRCTable[static_cast<unsigned char>( ulCrc )] ^ ( ulCrc >> 8 );
ulCrc = pulCRCTable[static_cast<unsigned char>( ulCrc )] ^ ( ulCrc >> 8 );
ulCrc = pulCRCTable[static_cast<unsigned char>( ulCrc )] ^ ( ulCrc >> 8 );
ulCrc = pulCRCTable[static_cast<unsigned char>( ulCrc )] ^ ( ulCrc >> 8 );
pulCRC = ulCrc;
return;
case 3:
ulCrc = pulCRCTable[*pb++ ^ static_cast<unsigned char>( ulCrc )] ^ ( ulCrc >> 8 );
[[fallthrough]];
case 2:
ulCrc = pulCRCTable[*pb++ ^ static_cast<unsigned char>( ulCrc )] ^ ( ulCrc >> 8 );
[[fallthrough]];
case 1:
ulCrc = pulCRCTable[*pb++ ^ static_cast<unsigned char>( ulCrc )] ^ ( ulCrc >> 8 );
[[fallthrough]];
case 0:
pulCRC = ulCrc;
return;
}
// We may need to do some alignment work up front, and at the end, so that
// the main loop is aligned and only has to worry about 8 byte at a time.
//
// The low-order two bits of pb and nBuffer in total control the
// upfront work.
//
nFront = reinterpret_cast<uintptr_t>( pb ) & 3;
nBuffer -= nFront;
switch ( nFront )
{
case 3:
ulCrc = pulCRCTable[*pb++ ^ static_cast<unsigned char>( ulCrc )] ^ ( ulCrc >> 8 );
[[fallthrough]];
case 2:
ulCrc = pulCRCTable[*pb++ ^ static_cast<unsigned char>( ulCrc )] ^ ( ulCrc >> 8 );
[[fallthrough]];
case 1:
ulCrc = pulCRCTable[*pb++ ^ static_cast<unsigned char>( ulCrc )] ^ ( ulCrc >> 8 );
}
nMain = nBuffer >> 3;
while ( nMain-- )
{
ulCrc ^= *reinterpret_cast<const CRC32_t*>( pb );
ulCrc = pulCRCTable[static_cast<unsigned char>( ulCrc )] ^ ( ulCrc >> 8 );
ulCrc = pulCRCTable[static_cast<unsigned char>( ulCrc )] ^ ( ulCrc >> 8 );
ulCrc = pulCRCTable[static_cast<unsigned char>( ulCrc )] ^ ( ulCrc >> 8 );
ulCrc = pulCRCTable[static_cast<unsigned char>( ulCrc )] ^ ( ulCrc >> 8 );
ulCrc ^= *reinterpret_cast<const CRC32_t*>( pb + 4 );
ulCrc = pulCRCTable[static_cast<unsigned char>( ulCrc )] ^ ( ulCrc >> 8 );
ulCrc = pulCRCTable[static_cast<unsigned char>( ulCrc )] ^ ( ulCrc >> 8 );
ulCrc = pulCRCTable[static_cast<unsigned char>( ulCrc )] ^ ( ulCrc >> 8 );
ulCrc = pulCRCTable[static_cast<unsigned char>( ulCrc )] ^ ( ulCrc >> 8 );
pb += 8;
}
nBuffer &= 7;
goto JustAfew;
}
static constexpr const size_t kCacheBlockSize = 1 << 20;
static constexpr const size_t kCacheSize = kCacheBlockSize << 2;
static constexpr const size_t kCacheMask = kCacheSize - 1;
class CCacheOutStream : public IOutStream, public CMyUnknownImp
{
CMyComPtr<IOutStream> _stream;
CMyComPtr<ISequentialOutStream> _seqStream;
Byte* _cache;
UInt64 _virtPos;
UInt64 _virtSize;
UInt64 _phyPos;
UInt64 _phySize; // <= _virtSize
UInt64 _cachedPos; // (_cachedPos + _cachedSize) <= _virtSize
size_t _cachedSize;
HRESULT MyWrite( size_t size );
HRESULT MyWriteBlock()
{
return MyWrite( kCacheBlockSize - ( static_cast<size_t>( _cachedPos ) & ( kCacheBlockSize - 1 ) ) );
}
public:
CCacheOutStream() : _cache( nullptr ) {}
~CCacheOutStream();
bool Allocate();
HRESULT Init( ISequentialOutStream* seqStream, IOutStream* stream );
HRESULT FlushCache();
MY_UNKNOWN_IMP
STDMETHOD( Write )( const void* data, UInt32 size, UInt32* processedSize );
STDMETHOD( Seek )( Int64 offset, UInt32 seekOrigin, UInt64* newPosition );
STDMETHOD( SetSize )( UInt64 newSize );
};
bool CCacheOutStream::Allocate()
{
if ( !_cache )
_cache = static_cast<Byte*>( ::MidAlloc( kCacheSize ) );
return _cache != nullptr;
}
HRESULT CCacheOutStream::Init( ISequentialOutStream* seqStream, IOutStream* stream )
{
_virtPos = 0;
_phyPos = 0;
_virtSize = 0;
_seqStream = seqStream;
_stream = stream;
if ( _stream )
{
RINOK( _stream->Seek( 0, STREAM_SEEK_CUR, &_virtPos ) );
RINOK( _stream->Seek( 0, STREAM_SEEK_END, &_virtSize ) );
RINOK( _stream->Seek( _virtPos, STREAM_SEEK_SET, &_virtPos ) );
}
_phyPos = _virtPos;
_phySize = _virtSize;
_cachedPos = 0;
_cachedSize = 0;
return S_OK;
}
HRESULT CCacheOutStream::MyWrite( size_t size )
{
while ( size != 0 && _cachedSize != 0 )
{
if ( _phyPos != _cachedPos )
{
if ( !_stream )
return E_FAIL;
RINOK( _stream->Seek( _cachedPos, STREAM_SEEK_SET, &_phyPos ) );
}
size_t pos = static_cast<size_t>( _cachedPos ) & kCacheMask;
size_t curSize = MyMin( kCacheSize - pos, _cachedSize );
curSize = MyMin( curSize, size );
RINOK( WriteStream( _seqStream, _cache + pos, curSize ) );
_phyPos += curSize;
if ( _phySize < _phyPos )
_phySize = _phyPos;
_cachedPos += curSize;
_cachedSize -= curSize;
size -= curSize;
}
return S_OK;
}
HRESULT CCacheOutStream::FlushCache()
{
return MyWrite( _cachedSize );
}
CCacheOutStream::~CCacheOutStream()
{
FlushCache();
if ( _stream )
{
if ( _virtSize != _phySize )
_stream->SetSize( _virtSize );
if ( _virtPos != _phyPos )
_stream->Seek( _virtPos, STREAM_SEEK_SET, nullptr );
}
::MidFree( _cache );
}
STDMETHODIMP CCacheOutStream::Write( const void* data, UInt32 size, UInt32* processedSize )
{
if ( processedSize )
*processedSize = 0;
if ( size == 0 )
return S_OK;
UInt64 zerosStart = _virtPos;
if ( _cachedSize != 0 )
{
if ( _virtPos < _cachedPos )
{
RINOK( FlushCache() );
}
else
{
UInt64 cachedEnd = _cachedPos + _cachedSize;
if ( cachedEnd < _virtPos )
{
if ( cachedEnd < _phySize )
{
RINOK( FlushCache() );
}
else
zerosStart = cachedEnd;
}
}
}
if ( _cachedSize == 0 && _phySize < _virtPos )
_cachedPos = zerosStart = _phySize;
if ( zerosStart != _virtPos )
{
// write zeros to [cachedEnd ... _virtPos)
for ( ;;)
{
UInt64 cachedEnd = _cachedPos + _cachedSize;
size_t endPos = static_cast<size_t>( cachedEnd ) & kCacheMask;
size_t curSize = kCacheSize - endPos;
if ( curSize > _virtPos - cachedEnd )
curSize = static_cast<size_t>( _virtPos - cachedEnd );
if ( curSize == 0 )
break;
while ( curSize > ( kCacheSize - _cachedSize ) )
{
RINOK( MyWriteBlock() );
}
memset( _cache + endPos, 0, curSize );
_cachedSize += curSize;
}
}
if ( _cachedSize == 0 )
_cachedPos = _virtPos;
size_t pos = static_cast<size_t>( _virtPos ) & kCacheMask;
size = static_cast<UInt32>( MyMin( static_cast<size_t>( size ), kCacheSize - pos ) );
UInt64 cachedEnd = _cachedPos + _cachedSize;
if ( _virtPos != cachedEnd ) // _virtPos < cachedEnd
size = static_cast<UInt32>( MyMin( static_cast<size_t>( size ), static_cast<size_t>( cachedEnd - _virtPos ) ) );
else
{
// _virtPos == cachedEnd
if ( _cachedSize == kCacheSize )
{
RINOK( MyWriteBlock() );
}
size_t startPos = static_cast<size_t>( _cachedPos & kCacheMask );
if ( startPos > pos )
size = static_cast<UInt32>( MyMin( static_cast<size_t>( size ), static_cast<size_t>( startPos - pos ) ) );
_cachedSize += size;
}
memcpy( _cache + pos, data, size );
if ( processedSize )
*processedSize = size;
_virtPos += size;
if ( _virtSize < _virtPos )
_virtSize = _virtPos;
return S_OK;
}
STDMETHODIMP CCacheOutStream::Seek( Int64 offset, UInt32 seekOrigin, UInt64* newPosition )
{
switch ( seekOrigin )
{
case STREAM_SEEK_SET: break;
case STREAM_SEEK_CUR: offset += _virtPos; break;
case STREAM_SEEK_END: offset += _virtSize; break;
default: return STG_E_INVALIDFUNCTION;
}
if ( offset < 0 )
return HRESULT_WIN32_ERROR_NEGATIVE_SEEK;
_virtPos = offset;
if ( newPosition )
*newPosition = offset;
return S_OK;
}
STDMETHODIMP CCacheOutStream::SetSize( UInt64 newSize )
{
_virtSize = newSize;
if ( newSize < _phySize )
{
if ( !_stream )
return E_NOTIMPL;
RINOK( _stream->SetSize( newSize ) );
_phySize = newSize;
}
if ( newSize <= _cachedPos )
{
_cachedSize = 0;
_cachedPos = newSize;
}
if ( newSize < _cachedPos + _cachedSize )
_cachedSize = static_cast<size_t>( newSize - _cachedPos );
return S_OK;
}
static constexpr std::string_view bannedExts[] =
{
".bat", ".cmd", ".com", ".dll", ".exe", ".msi", ".rar", ".reg", ".zip", ".tar", ".gz", ".tgz", ".so", ".vpk"
};
static constexpr std::string_view standardDirs[] =
{
"cfg", "expressions", "maps", "materials", "media", "missions", "models", "panorama", "particles", "resource", "scenes", "scripts", "sound"
};
class VpkWriter
{
public:
VpkWriter( bool writeV1 ) : writeV1( writeV1 ) {}
HRESULT addItem( AString internalPath, UInt32 size, IInStream* stream )
{
using namespace std::string_literals;
internalPath.MakeLower_Ascii();
const std::string_view path{ internalPath.Ptr(), internalPath.Len() };
for ( size_t i = 0; i < std::size( bannedExts ); ++i )
if ( path.ends_with( bannedExts[i] ) )
return E_FAIL;
const auto extOffset = path.rfind( '.' );
const auto nameOffset = path.rfind( '/', extOffset );
auto name = nameOffset != std::string_view::npos ? std::string{ path.substr( nameOffset + 1, extOffset - nameOffset - 1 ) } : std::string{ path.substr( 0, extOffset ) };
m_exts.try_emplace( extOffset != std::string_view::npos ? std::string{ path.substr(extOffset + 1) } : " "s ).
first->second.try_emplace( nameOffset != std::string_view::npos ? std::string{ path.substr(0, nameOffset) } : " "s ).
first->second.try_emplace( name.empty() ? " "s : std::move( name ), size, 0, stream );
if ( m_needFixup != 2 )
{
if ( const auto firstSep = path.find( '/' ); firstSep != std::string_view::npos )
{
const std::string_view d = path.substr( 0, firstSep );
size_t i = 0;
for (; i < std::size( standardDirs ); ++i )
{
if ( standardDirs[i] == d )
break;
}
if ( !m_lastDir.empty() && m_lastDir != d && i == std::size( standardDirs ) && m_needFixup == 1 )
m_needFixup = 2;
else if ( i == std::size( standardDirs ) )
m_needFixup = 1;
m_lastDir = d;
}
}
return S_OK;
}
HRESULT writePak( ISequentialOutStream* outStream, IArchiveUpdateCallback2* callback, UInt64 volSize )
{
CMyComPtr<CLocalProgress> progress = new CLocalProgress;
progress->Init( callback, true );
CMyComPtr<ICompressCoder> copyCoder = new NCompress::CCopyCoder;
CMyComPtr<IOutStream> stream_;
RINOK( outStream->QueryInterface( IID_IOutStream, (void**)&stream_ ) );
CMyComPtr<CCacheOutStream> stream = new CCacheOutStream();
if ( !stream->Allocate() )
return E_OUTOFMEMORY;
RINOK( stream->Init( outStream, stream_ ) );
const auto checkNeedFixup = [&]
{
for ( auto& ext : m_exts )
for ( auto& dir : ext.second )
if ( dir.first != m_lastDir )
return true;
return false;
};
if ( m_needFixup == 1 && checkNeedFixup() )
{
for ( auto &ext : m_exts )
{
robin_hood::unordered_node_map<std::string, robin_hood::unordered_node_map<std::string, File>> tmp;
for ( auto& dir : ext.second )
tmp.emplace( dir.first.substr( m_lastDir.size() + 1 ), std::move( dir.second ) );
ext.second = std::move( tmp );
}
}
constexpr const auto vpkMetaSize = 3 * sizeof( Int32 ) + 3 * sizeof( Int16 );
UInt32 size = 0, treeSize = 1;
for ( auto &ext : m_exts )
{
treeSize += static_cast<UInt32>( ext.first.size() + 2 ); // +1 string null, +1 last null terminator
for ( auto& dir : ext.second )
{
treeSize += static_cast<UInt32>( dir.first.size() + 2 ); // +1 string null, +1 last null terminator
for ( auto& file : dir.second )
{
treeSize += static_cast<UInt32>( file.first.size() + 1 + vpkMetaSize );
size += file.second.size;
}
}
}
RINOK( writeHeader( stream, volSize ? 0 : size, treeSize ) );
UInt16 curPak = volSize > 0 ? 0 : 0x7FFF;
UInt32 currentOffset = 0;
for ( auto& ext : m_exts )
{
RINOK( write( stream, ext.first ) );
for ( auto& dir : ext.second )
{
RINOK( write( stream, dir.first ) );
for ( auto& file : dir.second )
{
UInt64 pos;
RINOK( stream->Seek( 0, STREAM_SEEK_CUR, &pos ) );
progress->InSize = progress->OutSize = pos;
RINOK( progress->SetCur() );
RINOK( write( stream, file.first ) );
RINOK( write<UInt32>( stream, calcCrc( file.second ) ) );
RINOK( write<UInt16>( stream, 0 ) );
RINOK( write<UInt16>( stream, curPak ) );
RINOK( write<UInt32>( stream, currentOffset ) );
RINOK( write<UInt32>( stream, file.second.size ) );
RINOK( write<UInt16>( stream, 0xFFFF ) );
currentOffset += file.second.size;
file.second.pak = curPak;
if ( volSize && currentOffset > volSize )
{
currentOffset = 0;
++curPak;
}
}
RINOK( write<std::string>( stream, {} ) );
}
RINOK( write<std::string>( stream, {} ) );
}
RINOK( write<std::string>( stream, {} ) );
RINOK( stream->Seek( treeSize + ( writeV1 ? sizeof( libvpk::meta::VPKHeader1 ) : sizeof( libvpk::meta::VPKHeader2 ) ), STREAM_SEEK_SET, nullptr ) );
if ( !volSize )
{
for ( auto& ext : m_exts )
{
for ( auto& dir : ext.second )
{
for ( auto& file : dir.second )
{
UInt64 pos;
RINOK( stream->Seek( 0, STREAM_SEEK_CUR, &pos ) );
progress->InSize = progress->OutSize = pos;
RINOK( progress->SetCur() );
RINOK( copyCoder->Code( file.second.stream, stream, nullptr, nullptr, progress ) );
file.second.stream.Release();
}
}
}
}
else
{
CMyComPtr<ISequentialOutStream> pakStream;
UInt16 lastPak = 0xFFFF;
UInt64 written = 0;
for ( auto& ext : m_exts )
{
for ( auto& dir : ext.second )
{
for ( auto& file : dir.second )
{
if ( lastPak != file.second.pak )
{
lastPak = file.second.pak;
pakStream.Release();
RINOK( callback->GetVolumeStream( static_cast<UInt32>( lastPak - 1 ), &pakStream ) );
}
progress->InSize = progress->OutSize = written;
written += file.second.size;
RINOK( progress->SetCur() );
RINOK( copyCoder->Code( file.second.stream, pakStream, nullptr, nullptr, progress ) );
file.second.stream.Release();
}
}
}
}
RINOK( stream->FlushCache() );
return S_OK;
}
private:
template <typename T>
HRESULT write( IOutStream* stream, const T& data )
{
return stream->Write( &data, sizeof( T ), nullptr );
}
template <>
HRESULT write<std::string>( IOutStream* stream, const std::string& string )
{
return stream->Write( string.c_str(), static_cast<UInt32>( string.size() + 1 ), nullptr );
}
HRESULT writeHeader( IOutStream* stream, UInt32 size, UInt32 treeSize )
{
if ( writeV1 )
{
libvpk::meta::VPKHeader1 header;
header.signature = libvpk::meta::VPKHeader::ValidSignature;
header.version = 1;
header.treeSize = static_cast<Int32>( treeSize );
return stream->Write( &header, sizeof( header ), nullptr );
}
libvpk::meta::VPKHeader2 header;
header.signature = libvpk::meta::VPKHeader::ValidSignature;
header.version = 2;
header.treeSize = static_cast<Int32>( treeSize );
header.fileDataSectionSize = static_cast<Int32>( size );
return stream->Write( &header, sizeof( header ), nullptr );
}
struct File
{
UInt32 size = 0;
UInt16 pak = 0;
CMyComPtr<IInStream> stream;
};
static CRC32_t calcCrc( File& file )
{
CRC32_t crc;
CRC32_Init( crc );
constexpr UInt32 bufSize = 512 * 1024;
auto buf = new byte[bufSize];
IInStream* stream = file.stream;
UInt32 read;
while ( stream->Read( buf, bufSize, &read ) == S_OK && read > 0 )
CRC32_ProcessBuffer( crc, buf, read );