//*****************************************************************************
// Given an StgIO, opens compressed streams and do proper initialization.
// This is a helper for other Init functions.
//*****************************************************************************
__checkReturn
HRESULT
CLiteWeightStgdbRW::InitFileForRead(
StgIO * pStgIO, // For file i/o.
int bReadOnly) // If read-only open.
{
TiggerStorage * pStorage = NULL;
void * pvData;
ULONG cbData;
HRESULT hr = NOERROR;
// Allocate a new storage object which has IStorage on it.
pStorage = new (nothrow) TiggerStorage();
IfNullGo(pStorage);
// Init the storage object on the backing storage.
OptionValue ov;
IfFailGo(m_MiniMd.GetOption(&ov));
IfFailGo(pStorage->Init(pStgIO, ov.m_RuntimeVersion));
// Save pointers to header structure for version string.
_ASSERTE((m_pvMd == NULL) && (m_cbMd == 0));
IfFailGo(pStorage->GetHeaderPointer(&m_pvMd, &m_cbMd));
// Check to see if this is a minimal metadata
if (SUCCEEDED(pStorage->OpenStream(MINIMAL_MD_STREAM, &cbData, &pvData)))
{
m_MiniMd.m_fMinimalDelta = TRUE;
}
// Load the string pool.
if (SUCCEEDED(hr = pStorage->OpenStream(STRING_POOL_STREAM, &cbData, &pvData)))
{
// String pool has to end with a null-terminator, therefore we don't have to check string pool
// content on access.
// Shrink size of the pool to the last null-terminator found.
while (cbData != 0)
{
if (((LPBYTE)pvData)[cbData - 1] == 0)
{ // We have found last null terminator
break;
}
// Shrink size of the pool
cbData--;
Debug_ReportError("String heap/pool does not end with null-terminator ... shrinking the heap.");
}
IfFailGo(m_MiniMd.InitPoolOnMem(MDPoolStrings, pvData, cbData, bReadOnly));
}
else
{
if (hr != STG_E_FILENOTFOUND)
{
IfFailGo(hr);
}
IfFailGo(m_MiniMd.InitPoolOnMem(MDPoolStrings, NULL, 0, bReadOnly));
}
// Load the user string blob pool.
if (SUCCEEDED(hr = pStorage->OpenStream(US_BLOB_POOL_STREAM, &cbData, &pvData)))
{
IfFailGo(m_MiniMd.InitPoolOnMem(MDPoolUSBlobs, pvData, cbData, bReadOnly));
}
else
{
if (hr != STG_E_FILENOTFOUND)
{
IfFailGo(hr);
}
IfFailGo(m_MiniMd.InitPoolOnMem(MDPoolUSBlobs, NULL, 0, bReadOnly));
}
// Load the guid pool.
if (SUCCEEDED(hr = pStorage->OpenStream(GUID_POOL_STREAM, &cbData, &pvData)))
{
IfFailGo(m_MiniMd.InitPoolOnMem(MDPoolGuids, pvData, cbData, bReadOnly));
}
else
{
if (hr != STG_E_FILENOTFOUND)
{
IfFailGo(hr);
}
IfFailGo(m_MiniMd.InitPoolOnMem(MDPoolGuids, NULL, 0, bReadOnly));
}
// Load the blob pool.
if (SUCCEEDED(hr = pStorage->OpenStream(BLOB_POOL_STREAM, &cbData, &pvData)))
{
IfFailGo(m_MiniMd.InitPoolOnMem(MDPoolBlobs, pvData, cbData, bReadOnly));
}
else
{
if (hr != STG_E_FILENOTFOUND)
{
IfFailGo(hr);
}
IfFailGo(m_MiniMd.InitPoolOnMem(MDPoolBlobs, NULL, 0, bReadOnly));
}
// Open the metadata.
hr = pStorage->OpenStream(COMPRESSED_MODEL_STREAM, &cbData, &pvData);
if (hr == STG_E_FILENOTFOUND)
{
IfFailGo(pStorage->OpenStream(ENC_MODEL_STREAM, &cbData, &pvData));
}
IfFailGo(m_MiniMd.InitOnMem(pvData, cbData, bReadOnly));
IfFailGo(m_MiniMd.PostInit(0));
ErrExit:
if (pStorage != NULL)
{
delete pStorage;
}
return hr;
} // CLiteWeightStgdbRW::InitFileForRead
//*****************************************************************************
// Given an StgIO, opens compressed streams and do proper initialization.
// This is a helper for other Init functions.
//*****************************************************************************
HRESULT CLiteWeightStgdbRW::InitFileForRead(
StgIO *pStgIO, // For file i/o.
int bReadOnly) // If read-only open.
{
TiggerStorage *pStorage = 0; // Storage object.
void *pvData;
ULONG cbData;
HRESULT hr = NOERROR;
// Allocate a new storage object which has IStorage on it.
if ((pStorage = new (nothrow) TiggerStorage) == 0)
IfFailGo( E_OUTOFMEMORY);
// Init the storage object on the backing storage.
OptionValue ov;
m_MiniMd.GetOption(&ov);
IfFailGo( hr = pStorage->Init(pStgIO, ov.m_RuntimeVersion) );
// Save pointers to header structure for version string.
_ASSERTE(m_pvMd == NULL && m_cbMd == 0);
IfFailGo(pStorage->GetHeaderPointer(&m_pvMd, &m_cbMd));
// Check to see if this is a minimal metadata
if (SUCCEEDED(pStorage->OpenStream(MINIMAL_MD_STREAM, &cbData, &pvData)))
m_MiniMd.m_fMinimalDelta = TRUE;
// Load the string pool.
if (SUCCEEDED(hr=pStorage->OpenStream(STRING_POOL_STREAM, &cbData, &pvData)))
IfFailGo( m_MiniMd.InitPoolOnMem(MDPoolStrings, pvData, cbData, bReadOnly) );
else
{
if (hr != STG_E_FILENOTFOUND)
IfFailGo(hr);
IfFailGo(m_MiniMd.InitPoolOnMem(MDPoolStrings, 0, 0, 0));
}
// Load the user string blob pool.
if (SUCCEEDED(hr=pStorage->OpenStream(US_BLOB_POOL_STREAM, &cbData, &pvData)))
IfFailGo( m_MiniMd.InitPoolOnMem(MDPoolUSBlobs, pvData, cbData, bReadOnly) );
else
{
if (hr != STG_E_FILENOTFOUND)
IfFailGo(hr);
IfFailGo(m_MiniMd.InitPoolOnMem(MDPoolUSBlobs, 0, 0, 0));
}
// Load the guid pool.
if (SUCCEEDED(hr=pStorage->OpenStream(GUID_POOL_STREAM, &cbData, &pvData)))
IfFailGo( m_MiniMd.InitPoolOnMem(MDPoolGuids, pvData, cbData, bReadOnly) );
else
{
if (hr != STG_E_FILENOTFOUND)
IfFailGo(hr);
IfFailGo(m_MiniMd.InitPoolOnMem(MDPoolGuids, 0, 0, 0));
}
// Load the blob pool.
if (SUCCEEDED(hr=pStorage->OpenStream(BLOB_POOL_STREAM, &cbData, &pvData)))
IfFailGo( m_MiniMd.InitPoolOnMem(MDPoolBlobs, pvData, cbData, bReadOnly) );
else
{
if (hr != STG_E_FILENOTFOUND)
IfFailGo(hr);
IfFailGo(m_MiniMd.InitPoolOnMem(MDPoolBlobs, 0, 0, 0));
}
// Open the metadata.
hr = pStorage->OpenStream(COMPRESSED_MODEL_STREAM, &cbData, &pvData);
if (hr == STG_E_FILENOTFOUND)
{
IfFailGo(pStorage->OpenStream(ENC_MODEL_STREAM, &cbData, &pvData) );
}
IfFailGo( m_MiniMd.InitOnMem(pvData, cbData, bReadOnly) );
IfFailGo( m_MiniMd.PostInit(0) );
ErrExit:
if (pStorage)
delete pStorage;
return hr;
} // HRESULT CLiteWeightStgdbRW::InitFileForRead()