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Fix usage of STGM_ enumerations, remove forward declaration.

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Mike McCormack 2005-03-19 17:09:14 +00:00 committed by Alexandre Julliard
parent 2597b1beca
commit fd40ace3d3
1 changed files with 66 additions and 55 deletions
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121
dlls/shell32/memorystream.c
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@ -42,58 +42,17 @@
WINE_DEFAULT_DEBUG_CHANNEL(shell); WINE_DEFAULT_DEBUG_CHANNEL(shell);
static const IStreamVtbl stvt; #define STGM_ACCESS_MODE(stgm) ((stgm)&0x0000f)
#define STGM_SHARE_MODE(stgm) ((stgm)&0x000f0)
#define STGM_CREATE_MODE(stgm) ((stgm)&0x0f000)
typedef struct typedef struct
{ {
const IStreamVtbl *lpvtst; const IStreamVtbl *lpvtst;
DWORD ref; DWORD ref;
HANDLE handle; HANDLE handle;
} ISHFileStream; } ISHFileStream;
/**************************************************************************
* CreateStreamOnFile()
*
* similar to CreateStreamOnHGlobal
*/
HRESULT CreateStreamOnFile (LPCWSTR pszFilename, DWORD grfMode, IStream ** ppstm)
{
ISHFileStream* fstr;
HANDLE handle;
DWORD access = GENERIC_READ, creat;
if( grfMode & STGM_TRANSACTED )
return E_INVALIDARG;
if( grfMode & STGM_WRITE )
access |= GENERIC_WRITE;
if( grfMode & STGM_READWRITE )
access = GENERIC_WRITE | GENERIC_READ;
if( grfMode & STGM_CREATE )
creat = CREATE_ALWAYS;
else
creat = OPEN_EXISTING;
TRACE("Opening %s\n", debugstr_w(pszFilename) );
handle = CreateFileW( pszFilename, access, FILE_SHARE_READ, NULL, creat, 0, NULL );
if( handle == INVALID_HANDLE_VALUE )
return HRESULT_FROM_WIN32(GetLastError());
fstr = (ISHFileStream*)HeapAlloc(GetProcessHeap(),
HEAP_ZERO_MEMORY,sizeof(ISHFileStream));
if( !fstr )
return E_OUTOFMEMORY;
fstr->lpvtst=&stvt;
fstr->ref = 1;
fstr->handle = handle;
(*ppstm) = (IStream*)fstr;
return S_OK;
}
/************************************************************************** /**************************************************************************
* IStream_fnQueryInterface * IStream_fnQueryInterface
*/ */
@ -105,17 +64,14 @@ static HRESULT WINAPI IStream_fnQueryInterface(IStream *iface, REFIID riid, LPVO
*ppvObj = NULL; *ppvObj = NULL;
if(IsEqualIID(riid, &IID_IUnknown) || if(IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IStream))
IsEqualIID(riid, &IID_IStream)) *ppvObj = This;
{
*ppvObj = This;
}
if(*ppvObj) if(*ppvObj)
{ {
IStream_AddRef((IStream*)*ppvObj); IStream_AddRef((IStream*)*ppvObj);
TRACE("-- Interface: (%p)->(%p)\n",ppvObj,*ppvObj); TRACE("-- Interface: (%p)->(%p)\n",ppvObj,*ppvObj);
return S_OK; return S_OK;
} }
TRACE("-- Interface: E_NOINTERFACE\n"); TRACE("-- Interface: E_NOINTERFACE\n");
return E_NOINTERFACE; return E_NOINTERFACE;
@ -294,5 +250,60 @@ static const IStreamVtbl stvt =
IStream_fnUnlockRegion, IStream_fnUnlockRegion,
IStream_fnStat, IStream_fnStat,
IStream_fnClone IStream_fnClone
}; };
/**************************************************************************
* CreateStreamOnFile()
*
* similar to CreateStreamOnHGlobal
*/
HRESULT CreateStreamOnFile (LPCWSTR pszFilename, DWORD grfMode, IStream ** ppstm)
{
ISHFileStream* fstr;
HANDLE handle;
DWORD access = GENERIC_READ, creat;
if( grfMode & STGM_TRANSACTED )
return E_INVALIDARG;
switch( STGM_ACCESS_MODE( grfMode ) )
{
case STGM_READ:
access = GENERIC_READ;
break;
case STGM_WRITE:
case STGM_READWRITE:
access = GENERIC_WRITE | GENERIC_READ;
break;
default:
return STG_E_INVALIDFLAG;
}
switch( STGM_CREATE_MODE( grfMode ) )
{
case STGM_CREATE:
creat = CREATE_ALWAYS;
break;
case STGM_FAILIFTHERE:
creat = OPEN_EXISTING;
break;
default:
return STG_E_INVALIDFLAG;
}
handle = CreateFileW( pszFilename, access,
FILE_SHARE_READ, NULL, creat, 0, NULL );
if( handle == INVALID_HANDLE_VALUE )
return HRESULT_FROM_WIN32(GetLastError());
fstr = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(ISHFileStream));
if( !fstr )
return E_OUTOFMEMORY;
fstr->lpvtst = &stvt;
fstr->ref = 1;
fstr->handle = handle;
(*ppstm) = (IStream*)fstr;
return S_OK;
}