128 lines
3.5 KiB
C++
128 lines
3.5 KiB
C++
// xfrmserv.cpp -- Implementation for the Transform Services class
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#include "stdafx.h"
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HRESULT CTransformServices::Create
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(IUnknown *punkOuter, IITFileSystem *pITSFS, ITransformServices **ppTransformServices)
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{
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CTransformServices *pTS = New CTransformServices(punkOuter);
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return FinishSetup(pTS? pTS->m_ImpITransformServices.Initial(pITSFS)
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: STG_E_INSUFFICIENTMEMORY,
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pTS, IID_ITransformServices, (PPVOID) ppTransformServices
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);
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}
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CTransformServices::CImpITransformServices::CImpITransformServices
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(CTransformServices *pBackObj, IUnknown *punkOuter)
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: IITTransformServices(pBackObj, punkOuter)
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{
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m_pITSFS = NULL;
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}
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CTransformServices::CImpITransformServices::~CImpITransformServices()
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{
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if (m_pITSFS)
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m_pITSFS->Release();
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}
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HRESULT CTransformServices::CImpITransformServices::Initial(IITFileSystem *pITSFS)
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{
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m_pITSFS = pITSFS;
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m_pITSFS->AddRef();
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return NO_ERROR;
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}
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// ITransformServices methods
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HRESULT STDMETHODCALLTYPE CTransformServices::CImpITransformServices::PerTransformStorage
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(REFCLSID rclsidXForm, IStorage **ppStg)
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{
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WCHAR awcsClassID[CWC_GUID_STRING_BUFFER];
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UINT cbResult = StringFromGUID2(rclsidXForm, awcsClassID, CWC_GUID_STRING_BUFFER);
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if (cbResult == 0)
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return STG_E_UNKNOWN;
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RonM_ASSERT(wcsLen(pwcsTransformStorage) + wcsLen(awcsClassID) + 1 < MAX_PATH);
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WCHAR awcsPath[MAX_PATH];
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wcsCpy(awcsPath, pwcsTransformStorage);
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wcsCat(awcsPath, awcsClassID);
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wcsCat(awcsPath, L"/");
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return m_pITSFS->CreateStorage(NULL, awcsPath, STGM_READWRITE, (IStorageITEx **) ppStg);
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}
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HRESULT STDMETHODCALLTYPE CTransformServices::CImpITransformServices::PerTransformInstanceStorage
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(REFCLSID rclsidXForm, const WCHAR *pwszDataSpace, IStorage **ppStg)
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{
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WCHAR awcsClassID[CWC_GUID_STRING_BUFFER];
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UINT cbResult = StringFromGUID2(rclsidXForm, awcsClassID, CWC_GUID_STRING_BUFFER);
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if (cbResult == 0)
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return STG_E_UNKNOWN;
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UINT cwc = wcsLen(pwcsSpaceNameStorage) + wcsLen(pwszDataSpace)
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+ wcsLen(pwcsTransformSubStorage)
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+ wcsLen(awcsClassID)
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+ wcsLen(pwcsInstanceSubStorage);
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if (cwc >= MAX_PATH)
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return STG_E_INVALIDNAME;
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WCHAR awcsPath[MAX_PATH];
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wcsCpy(awcsPath, pwcsSpaceNameStorage);
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wcsCat(awcsPath, pwszDataSpace);
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wcsCat(awcsPath, pwcsTransformSubStorage);
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wcsCat(awcsPath, awcsClassID);
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wcsCat(awcsPath, pwcsInstanceSubStorage);
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HRESULT hr = m_pITSFS->OpenStorage(NULL, awcsPath, STGM_READWRITE, (IStorageITEx **) ppStg);
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if (hr == STG_E_FILENOTFOUND)
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hr = m_pITSFS->CreateStorage(NULL, awcsPath, STGM_READWRITE, (IStorageITEx **) ppStg);
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return hr;
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}
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HRESULT STDMETHODCALLTYPE CTransformServices::CImpITransformServices::SetKeys
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(REFCLSID rclsidXForm, const WCHAR *pwszDataSpace,
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PBYTE pbReadKey, UINT cbReadKey,
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PBYTE pbWriteKey, UINT cbWriteKey
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)
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{
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RonM_ASSERT(FALSE);
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return E_NOTIMPL;
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}
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HRESULT STDMETHODCALLTYPE CTransformServices::CImpITransformServices::CreateTemporaryStream
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(IStream **ppStrm)
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{
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ILockBytes *pLockBytes = NULL;
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HRESULT hr = CFSLockBytes::CreateTemp(NULL, &pLockBytes);
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if (SUCCEEDED(hr))
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{
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hr = CStream::OpenStream(NULL, pLockBytes, STGM_READWRITE, (IStreamITEx **) ppStrm);
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if (!SUCCEEDED(hr))
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pLockBytes->Release();
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}
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return hr;
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}
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