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wine/dlls/oleaut32/safearray.c
Andrew Talbot 5ea25c62b8 oleaut32: Remove unneeded casts.
2008-01-16 12:16:01 +01:00

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/*************************************************************************
* OLE Automation - SafeArray
*
* This file contains the implementation of the SafeArray functions.
*
* Copyright 1999 Sylvain St-Germain
* Copyright 2002-2003 Marcus Meissner
* Copyright 2003 Jon Griffiths
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
/* Memory Layout of a SafeArray:
*
* -0x10: start of memory.
* -0x10: GUID for VT_DISPATCH and VT_UNKNOWN safearrays (if FADF_HAVEIID)
* -0x04: DWORD varianttype; (for all others, except VT_RECORD) (if FADF_HAVEVARTYPE)
* -0x4: IRecordInfo* iface; (if FADF_RECORD, for VT_RECORD (can be NULL))
* 0x00: SAFEARRAY,
* 0x10: SAFEARRAYBOUNDS[0...]
*/
#include "config.h"
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
#define COBJMACROS
#include "windef.h"
#include "winerror.h"
#include "winbase.h"
#include "variant.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(variant);
/************************************************************************
* SafeArray {OLEAUT32}
*
* NOTES
* The SafeArray data type provides the underlying interface for Ole
* Automations arrays, used for example to represent array types in
* Visual Basic(tm) and to gather user defined parameters for invocation through
* an IDispatch interface.
*
* Safe arrays provide bounds checking and automatically manage the data
* types they contain, for example handing reference counting and copying
* of interface pointers. User defined types can be stored in arrays
* using the IRecordInfo interface.
*
* There are two types of SafeArray, normal and vectors. Normal arrays can have
* multiple dimensions and the data for the array is allocated separately from
* the array header. This is the most flexible type of array. Vectors, on the
* other hand, are fixed in size and consist of a single allocated block, and a
* single dimension.
*
* DATATYPES
* The following types of data can be stored within a SafeArray.
* Numeric:
*| VT_I1, VT_UI1, VT_I2, VT_UI2, VT_I4, VT_UI4, VT_I8, VT_UI8, VT_INT, VT_UINT,
*| VT_R4, VT_R8, VT_CY, VT_DECIMAL
* Interfaces:
*| VT_DISPATCH, VT_UNKNOWN, VT_RECORD
* Other:
*| VT_VARIANT, VT_INT_PTR, VT_UINT_PTR, VT_BOOL, VT_ERROR, VT_DATE, VT_BSTR
*
* FUNCTIONS
* BstrFromVector()
* VectorFromBstr()
*/
/* Undocumented hidden space before the start of a SafeArray descriptor */
#define SAFEARRAY_HIDDEN_SIZE sizeof(GUID)
/* Allocate memory */
static inline LPVOID SAFEARRAY_Malloc(ULONG ulSize)
{
/* FIXME: Memory should be allocated and freed using a per-thread IMalloc
* instance returned from CoGetMalloc().
*/
return HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, ulSize);
}
/* Free memory */
static inline BOOL SAFEARRAY_Free(LPVOID lpData)
{
return HeapFree(GetProcessHeap(), 0, lpData);
}
/* Get the size of a supported VT type (0 means unsupported) */
static DWORD SAFEARRAY_GetVTSize(VARTYPE vt)
{
switch (vt)
{
case VT_I1:
case VT_UI1: return sizeof(BYTE);
case VT_BOOL:
case VT_I2:
case VT_UI2: return sizeof(SHORT);
case VT_I4:
case VT_UI4:
case VT_R4:
case VT_ERROR: return sizeof(LONG);
case VT_R8:
case VT_I8:
case VT_UI8: return sizeof(LONG64);
case VT_INT:
case VT_UINT: return sizeof(INT);
case VT_INT_PTR:
case VT_UINT_PTR: return sizeof(UINT_PTR);
case VT_CY: return sizeof(CY);
case VT_DATE: return sizeof(DATE);
case VT_BSTR: return sizeof(BSTR);
case VT_DISPATCH: return sizeof(LPDISPATCH);
case VT_VARIANT: return sizeof(VARIANT);
case VT_UNKNOWN: return sizeof(LPUNKNOWN);
case VT_DECIMAL: return sizeof(DECIMAL);
/* Note: Return a non-zero size to indicate vt is valid. The actual size
* of a UDT is taken from the result of IRecordInfo_GetSize().
*/
case VT_RECORD: return 32;
}
return 0;
}
/* Set the hidden data for an array */
static inline void SAFEARRAY_SetHiddenDWORD(SAFEARRAY* psa, DWORD dw)
{
/* Implementation data is stored in the 4 bytes before the header */
LPDWORD lpDw = (LPDWORD)psa;
lpDw[-1] = dw;
}
/* Get the hidden data from an array */
static inline DWORD SAFEARRAY_GetHiddenDWORD(SAFEARRAY* psa)
{
LPDWORD lpDw = (LPDWORD)psa;
return lpDw[-1];
}
/* Get the number of cells in a SafeArray */
static ULONG SAFEARRAY_GetCellCount(const SAFEARRAY *psa)
{
const SAFEARRAYBOUND* psab = psa->rgsabound;
USHORT cCount = psa->cDims;
ULONG ulNumCells = 1;
while (cCount--)
{
/* This is a valid bordercase. See testcases. -Marcus */
if (!psab->cElements)
return 0;
ulNumCells *= psab->cElements;
psab++;
}
return ulNumCells;
}
/* Allocate a descriptor for an array */
static HRESULT SAFEARRAY_AllocDescriptor(ULONG ulSize, SAFEARRAY **ppsaOut)
{
*ppsaOut = (SAFEARRAY*)((char*)SAFEARRAY_Malloc(ulSize + SAFEARRAY_HIDDEN_SIZE) + SAFEARRAY_HIDDEN_SIZE);
if (!*ppsaOut)
return E_UNEXPECTED;
return S_OK;
}
/* Set the features of an array */
static void SAFEARRAY_SetFeatures(VARTYPE vt, SAFEARRAY *psa)
{
/* Set the IID if we have one, otherwise set the type */
if (vt == VT_DISPATCH)
{
psa->fFeatures = FADF_HAVEIID;
SafeArraySetIID(psa, &IID_IDispatch);
}
else if (vt == VT_UNKNOWN)
{
psa->fFeatures = FADF_HAVEIID;
SafeArraySetIID(psa, &IID_IUnknown);
}
else if (vt == VT_RECORD)
psa->fFeatures = FADF_RECORD;
else
{
psa->fFeatures = FADF_HAVEVARTYPE;
SAFEARRAY_SetHiddenDWORD(psa, vt);
}
}
/* Create an array */
static SAFEARRAY* SAFEARRAY_Create(VARTYPE vt, UINT cDims, const SAFEARRAYBOUND *rgsabound, ULONG ulSize)
{
SAFEARRAY *psa = NULL;
int i;
if (!rgsabound)
return NULL;
if (SUCCEEDED(SafeArrayAllocDescriptorEx(vt, cDims, &psa)))
{
switch (vt)
{
case VT_BSTR: psa->fFeatures |= FADF_BSTR; break;
case VT_UNKNOWN: psa->fFeatures |= FADF_UNKNOWN; break;
case VT_DISPATCH: psa->fFeatures |= FADF_DISPATCH; break;
case VT_VARIANT: psa->fFeatures |= FADF_VARIANT; break;
}
for (i = 0; i < cDims; i++)
memcpy(psa->rgsabound + i, rgsabound + cDims - 1 - i, sizeof(SAFEARRAYBOUND));
if (ulSize)
psa->cbElements = ulSize;
if (!psa->cbElements || FAILED(SafeArrayAllocData(psa)))
{
SafeArrayDestroyDescriptor(psa);
psa = NULL;
}
}
return psa;
}
/* Create an array as a vector */
static SAFEARRAY* SAFEARRAY_CreateVector(VARTYPE vt, LONG lLbound, ULONG cElements, ULONG ulSize)
{
SAFEARRAY *psa = NULL;
if (ulSize || (vt == VT_RECORD))
{
/* Allocate the header and data together */
if (SUCCEEDED(SAFEARRAY_AllocDescriptor(sizeof(SAFEARRAY) + ulSize * cElements, &psa)))
{
SAFEARRAY_SetFeatures(vt, psa);
psa->cDims = 1;
psa->fFeatures |= FADF_CREATEVECTOR;
psa->pvData = &psa[1]; /* Data follows the header */
psa->cbElements = ulSize;
psa->rgsabound[0].cElements = cElements;
psa->rgsabound[0].lLbound = lLbound;
switch (vt)
{
case VT_BSTR: psa->fFeatures |= FADF_BSTR; break;
case VT_UNKNOWN: psa->fFeatures |= FADF_UNKNOWN; break;
case VT_DISPATCH: psa->fFeatures |= FADF_DISPATCH; break;
case VT_VARIANT: psa->fFeatures |= FADF_VARIANT; break;
}
}
}
return psa;
}
/* Free data items in an array */
static HRESULT SAFEARRAY_DestroyData(SAFEARRAY *psa, ULONG ulStartCell)
{
if (psa->pvData && !(psa->fFeatures & FADF_DATADELETED))
{
ULONG ulCellCount = SAFEARRAY_GetCellCount(psa);
if (ulStartCell > ulCellCount) {
FIXME("unexpted ulcellcount %d, start %d\n",ulCellCount,ulStartCell);
return E_UNEXPECTED;
}
ulCellCount -= ulStartCell;
if (psa->fFeatures & (FADF_UNKNOWN|FADF_DISPATCH))
{
LPUNKNOWN *lpUnknown = (LPUNKNOWN *)psa->pvData + ulStartCell;
while(ulCellCount--)
{
if (*lpUnknown)
IUnknown_Release(*lpUnknown);
lpUnknown++;
}
}
else if (psa->fFeatures & (FADF_RECORD))
{
IRecordInfo *lpRecInfo;
if (SUCCEEDED(SafeArrayGetRecordInfo(psa, &lpRecInfo)))
{
PBYTE pRecordData = (PBYTE)psa->pvData;
while(ulCellCount--)
{
IRecordInfo_RecordClear(lpRecInfo, pRecordData);
pRecordData += psa->cbElements;
}
IRecordInfo_Release(lpRecInfo);
}
}
else if (psa->fFeatures & FADF_BSTR)
{
BSTR* lpBstr = (BSTR*)psa->pvData + ulStartCell;
while(ulCellCount--)
{
if (*lpBstr)
SysFreeString(*lpBstr);
lpBstr++;
}
}
else if (psa->fFeatures & FADF_VARIANT)
{
VARIANT* lpVariant = (VARIANT*)psa->pvData + ulStartCell;
while(ulCellCount--)
{
HRESULT hRet = VariantClear(lpVariant);
if (FAILED(hRet)) FIXME("VariantClear of element failed!\n");
lpVariant++;
}
}
}
return S_OK;
}
/* Copy data items from one array to another */
static HRESULT SAFEARRAY_CopyData(SAFEARRAY *psa, SAFEARRAY *dest)
{
if (!psa->pvData)
return S_OK;
else if (!dest->pvData || psa->fFeatures & FADF_DATADELETED)
return E_INVALIDARG;
else
{
ULONG ulCellCount = SAFEARRAY_GetCellCount(psa);
dest->fFeatures = (dest->fFeatures & FADF_CREATEVECTOR) |
(psa->fFeatures & ~(FADF_CREATEVECTOR|FADF_DATADELETED));
if (psa->fFeatures & FADF_VARIANT)
{
VARIANT* lpVariant = (VARIANT*)psa->pvData;
VARIANT* lpDest = (VARIANT*)dest->pvData;
while(ulCellCount--)
{
HRESULT hRet;
hRet = VariantCopy(lpDest, lpVariant);
if (FAILED(hRet)) FIXME("VariantCopy failed with 0x%x\n", hRet);
lpVariant++;
lpDest++;
}
}
else if (psa->fFeatures & FADF_BSTR)
{
BSTR* lpBstr = (BSTR*)psa->pvData;
BSTR* lpDest = (BSTR*)dest->pvData;
while(ulCellCount--)
{
if (*lpBstr)
{
*lpDest = SysAllocStringByteLen((char*)*lpBstr, SysStringByteLen(*lpBstr));
if (!*lpDest)
return E_OUTOFMEMORY;
}
else
*lpDest = NULL;
lpBstr++;
lpDest++;
}
}
else
{
/* Copy the data over */
memcpy(dest->pvData, psa->pvData, ulCellCount * psa->cbElements);
if (psa->fFeatures & (FADF_UNKNOWN|FADF_DISPATCH))
{
LPUNKNOWN *lpUnknown = (LPUNKNOWN *)dest->pvData;
while(ulCellCount--)
{
if (*lpUnknown)
IUnknown_AddRef(*lpUnknown);
lpUnknown++;
}
}
}
if (psa->fFeatures & FADF_RECORD)
{
IRecordInfo* pRecInfo = NULL;
SafeArrayGetRecordInfo(psa, &pRecInfo);
SafeArraySetRecordInfo(dest, pRecInfo);
if (pRecInfo)
{
/* Release because Get() adds a reference */
IRecordInfo_Release(pRecInfo);
}
}
else if (psa->fFeatures & FADF_HAVEIID)
{
GUID guid;
SafeArrayGetIID(psa, &guid);
SafeArraySetIID(dest, &guid);
}
else if (psa->fFeatures & FADF_HAVEVARTYPE)
{
SAFEARRAY_SetHiddenDWORD(dest, SAFEARRAY_GetHiddenDWORD(psa));
}
}
return S_OK;
}
/*************************************************************************
* SafeArrayAllocDescriptor (OLEAUT32.36)
*
* Allocate and initialise a descriptor for a SafeArray.
*
* PARAMS
* cDims [I] Number of dimensions of the array
* ppsaOut [O] Destination for new descriptor
*
* RETURNS
* Success: S_OK. ppsaOut is filled with a newly allocated descriptor.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI SafeArrayAllocDescriptor(UINT cDims, SAFEARRAY **ppsaOut)
{
LONG allocSize;
TRACE("(%d,%p)\n", cDims, ppsaOut);
if (!cDims || cDims >= 0x10000) /* Maximum 65535 dimensions */
return E_INVALIDARG;
if (!ppsaOut)
return E_POINTER;
/* We need enough space for the header and its bounds */
allocSize = sizeof(SAFEARRAY) + sizeof(SAFEARRAYBOUND) * (cDims - 1);
if (FAILED(SAFEARRAY_AllocDescriptor(allocSize, ppsaOut)))
return E_UNEXPECTED;
(*ppsaOut)->cDims = cDims;
TRACE("(%d): %u bytes allocated for descriptor.\n", cDims, allocSize);
return S_OK;
}
/*************************************************************************
* SafeArrayAllocDescriptorEx (OLEAUT32.41)
*
* Allocate and initialise a descriptor for a SafeArray of a given type.
*
* PARAMS
* vt [I] The type of items to store in the array
* cDims [I] Number of dimensions of the array
* ppsaOut [O] Destination for new descriptor
*
* RETURNS
* Success: S_OK. ppsaOut is filled with a newly allocated descriptor.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* - This function does not chack that vt is an allowed VARTYPE.
* - Unlike SafeArrayAllocDescriptor(), vt is associated with the array.
* See SafeArray.
*/
HRESULT WINAPI SafeArrayAllocDescriptorEx(VARTYPE vt, UINT cDims, SAFEARRAY **ppsaOut)
{
ULONG cbElements;
HRESULT hRet = E_UNEXPECTED;
TRACE("(%d->%s,%d,%p)\n", vt, debugstr_vt(vt), cDims, ppsaOut);
cbElements = SAFEARRAY_GetVTSize(vt);
if (!cbElements)
WARN("Creating a descriptor with an invalid VARTYPE!\n");
hRet = SafeArrayAllocDescriptor(cDims, ppsaOut);
if (SUCCEEDED(hRet))
{
SAFEARRAY_SetFeatures(vt, *ppsaOut);
(*ppsaOut)->cbElements = cbElements;
}
return hRet;
}
/*************************************************************************
* SafeArrayAllocData (OLEAUT32.37)
*
* Allocate the data area of a SafeArray.
*
* PARAMS
* psa [I] SafeArray to allocate the data area of.
*
* RETURNS
* Success: S_OK. The data area is allocated and initialised.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI SafeArrayAllocData(SAFEARRAY *psa)
{
HRESULT hRet = E_INVALIDARG;
TRACE("(%p)\n", psa);
if (psa)
{
ULONG ulSize = SAFEARRAY_GetCellCount(psa);
psa->pvData = SAFEARRAY_Malloc(ulSize * psa->cbElements);
if (psa->pvData)
{
hRet = S_OK;
TRACE("%u bytes allocated for data at %p (%u objects).\n",
ulSize * psa->cbElements, psa->pvData, ulSize);
}
else
hRet = E_OUTOFMEMORY;
}
return hRet;
}
/*************************************************************************
* SafeArrayCreate (OLEAUT32.15)
*
* Create a new SafeArray.
*
* PARAMS
* vt [I] Type to store in the safe array
* cDims [I] Number of array dimensions
* rgsabound [I] Bounds of the array dimensions
*
* RETURNS
* Success: A pointer to a new array object.
* Failure: NULL, if any parameter is invalid or memory allocation fails.
*
* NOTES
* Win32 allows arrays with 0 sized dimensions. This bug is not reproduced
* in the Wine implementation.
* See SafeArray.
*/
SAFEARRAY* WINAPI SafeArrayCreate(VARTYPE vt, UINT cDims, SAFEARRAYBOUND *rgsabound)
{
TRACE("(%d->%s,%d,%p)\n", vt, debugstr_vt(vt), cDims, rgsabound);
if (vt == VT_RECORD)
return NULL;
return SAFEARRAY_Create(vt, cDims, rgsabound, 0);
}
/*************************************************************************
* SafeArrayCreateEx (OLEAUT32.15)
*
* Create a new SafeArray.
*
* PARAMS
* vt [I] Type to store in the safe array
* cDims [I] Number of array dimensions
* rgsabound [I] Bounds of the array dimensions
* pvExtra [I] Extra data
*
* RETURNS
* Success: A pointer to a new array object.
* Failure: NULL, if any parameter is invalid or memory allocation fails.
*
* NOTES
* See SafeArray.
*/
SAFEARRAY* WINAPI SafeArrayCreateEx(VARTYPE vt, UINT cDims, SAFEARRAYBOUND *rgsabound, LPVOID pvExtra)
{
ULONG ulSize = 0;
IRecordInfo* iRecInfo = (IRecordInfo*)pvExtra;
SAFEARRAY* psa;
TRACE("(%d->%s,%d,%p,%p)\n", vt, debugstr_vt(vt), cDims, rgsabound, pvExtra);
if (vt == VT_RECORD)
{
if (!iRecInfo)
return NULL;
IRecordInfo_GetSize(iRecInfo, &ulSize);
}
psa = SAFEARRAY_Create(vt, cDims, rgsabound, ulSize);
if (pvExtra)
{
switch(vt)
{
case VT_RECORD:
SafeArraySetRecordInfo(psa, pvExtra);
break;
case VT_UNKNOWN:
case VT_DISPATCH:
SafeArraySetIID(psa, pvExtra);
break;
}
}
return psa;
}
/************************************************************************
* SafeArrayCreateVector (OLEAUT32.411)
*
* Create a one dimensional, contiguous SafeArray.
*
* PARAMS
* vt [I] Type to store in the safe array
* lLbound [I] Lower bound of the array
* cElements [I] Number of elements in the array
*
* RETURNS
* Success: A pointer to a new array object.
* Failure: NULL, if any parameter is invalid or memory allocation fails.
*
* NOTES
* See SafeArray.
*/
SAFEARRAY* WINAPI SafeArrayCreateVector(VARTYPE vt, LONG lLbound, ULONG cElements)
{
TRACE("(%d->%s,%d,%d\n", vt, debugstr_vt(vt), lLbound, cElements);
if (vt == VT_RECORD)
return NULL;
return SAFEARRAY_CreateVector(vt, lLbound, cElements, SAFEARRAY_GetVTSize(vt));
}
/************************************************************************
* SafeArrayCreateVectorEx (OLEAUT32.411)
*
* Create a one dimensional, contiguous SafeArray.
*
* PARAMS
* vt [I] Type to store in the safe array
* lLbound [I] Lower bound of the array
* cElements [I] Number of elements in the array
* pvExtra [I] Extra data
*
* RETURNS
* Success: A pointer to a new array object.
* Failure: NULL, if any parameter is invalid or memory allocation fails.
*
* NOTES
* See SafeArray.
*/
SAFEARRAY* WINAPI SafeArrayCreateVectorEx(VARTYPE vt, LONG lLbound, ULONG cElements, LPVOID pvExtra)
{
ULONG ulSize;
IRecordInfo* iRecInfo = (IRecordInfo*)pvExtra;
SAFEARRAY* psa;
TRACE("(%d->%s,%d,%d,%p\n", vt, debugstr_vt(vt), lLbound, cElements, pvExtra);
if (vt == VT_RECORD)
{
if (!iRecInfo)
return NULL;
IRecordInfo_GetSize(iRecInfo, &ulSize);
}
else
ulSize = SAFEARRAY_GetVTSize(vt);
psa = SAFEARRAY_CreateVector(vt, lLbound, cElements, ulSize);
if (pvExtra)
{
switch(vt)
{
case VT_RECORD:
SafeArraySetRecordInfo(psa, iRecInfo);
break;
case VT_UNKNOWN:
case VT_DISPATCH:
SafeArraySetIID(psa, pvExtra);
break;
}
}
return psa;
}
/*************************************************************************
* SafeArrayDestroyDescriptor (OLEAUT32.38)
*
* Destroy a SafeArray.
*
* PARAMS
* psa [I] SafeArray to destroy.
*
* RETURNS
* Success: S_OK. The resources used by the array are freed.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI SafeArrayDestroyDescriptor(SAFEARRAY *psa)
{
TRACE("(%p)\n", psa);
if (psa)
{
LPVOID lpv = (char*)psa - SAFEARRAY_HIDDEN_SIZE;
if (psa->cLocks)
return DISP_E_ARRAYISLOCKED; /* Can't destroy a locked array */
if (psa->fFeatures & FADF_RECORD)
SafeArraySetRecordInfo(psa, NULL);
if (psa->fFeatures & FADF_CREATEVECTOR &&
!(psa->fFeatures & FADF_DATADELETED))
SAFEARRAY_DestroyData(psa, 0); /* Data not previously deleted */
if (!SAFEARRAY_Free(lpv))
return E_UNEXPECTED;
}
return S_OK;
}
/*************************************************************************
* SafeArrayLock (OLEAUT32.21)
*
* Increment the lock counter of a SafeArray.
*
* PARAMS
* psa [O] SafeArray to lock
*
* RETURNS
* Success: S_OK. The array lock is incremented.
* Failure: E_INVALIDARG if psa is NULL, or E_UNEXPECTED if too many locks
* are held on the array at once.
*
* NOTES
* In Win32 these locks are not thread safe.
* See SafeArray.
*/
HRESULT WINAPI SafeArrayLock(SAFEARRAY *psa)
{
ULONG ulLocks;
TRACE("(%p)\n", psa);
if (!psa)
return E_INVALIDARG;
ulLocks = InterlockedIncrement( (LONG*) &psa->cLocks);
if (ulLocks > 0xffff) /* Maximum of 16384 locks at a time */
{
WARN("Out of locks!\n");
InterlockedDecrement( (LONG*) &psa->cLocks);
return E_UNEXPECTED;
}
return S_OK;
}
/*************************************************************************
* SafeArrayUnlock (OLEAUT32.22)
*
* Decrement the lock counter of a SafeArray.
*
* PARAMS
* psa [O] SafeArray to unlock
*
* RETURNS
* Success: S_OK. The array lock is decremented.
* Failure: E_INVALIDARG if psa is NULL, or E_UNEXPECTED if no locks are
* held on the array.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI SafeArrayUnlock(SAFEARRAY *psa)
{
TRACE("(%p)\n", psa);
if (!psa)
return E_INVALIDARG;
if (InterlockedDecrement( (LONG*) &psa->cLocks) < 0)
{
WARN("Unlocked but no lock held!\n");
InterlockedIncrement( (LONG*) &psa->cLocks);
return E_UNEXPECTED;
}
return S_OK;
}
/*************************************************************************
* SafeArrayPutElement (OLEAUT32.26)
*
* Put an item into a SafeArray.
*
* PARAMS
* psa [I] SafeArray to insert into
* rgIndices [I] Indices to insert at
* pvData [I] Data to insert
*
* RETURNS
* Success: S_OK. The item is inserted
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI SafeArrayPutElement(SAFEARRAY *psa, LONG *rgIndices, void *pvData)
{
HRESULT hRet;
TRACE("(%p,%p,%p)\n", psa, rgIndices, pvData);
if (!psa || !rgIndices)
return E_INVALIDARG;
hRet = SafeArrayLock(psa);
if (SUCCEEDED(hRet))
{
PVOID lpvDest;
hRet = SafeArrayPtrOfIndex(psa, rgIndices, &lpvDest);
if (SUCCEEDED(hRet))
{
if (psa->fFeatures & FADF_VARIANT)
{
VARIANT* lpVariant = (VARIANT*)pvData;
VARIANT* lpDest = (VARIANT*)lpvDest;
hRet = VariantClear(lpDest);
if (FAILED(hRet)) FIXME("VariantClear failed with 0x%x\n", hRet);
hRet = VariantCopy(lpDest, lpVariant);
if (FAILED(hRet)) FIXME("VariantCopy failed with 0x%x\n", hRet);
}
else if (psa->fFeatures & FADF_BSTR)
{
BSTR lpBstr = (BSTR)pvData;
BSTR* lpDest = (BSTR*)lpvDest;
if (*lpDest)
SysFreeString(*lpDest);
*lpDest = SysAllocStringByteLen((char*)lpBstr, SysStringByteLen(lpBstr));
if (!*lpDest)
hRet = E_OUTOFMEMORY;
}
else
{
if (psa->fFeatures & (FADF_UNKNOWN|FADF_DISPATCH))
{
LPUNKNOWN lpUnknown = (LPUNKNOWN)pvData;
LPUNKNOWN *lpDest = (LPUNKNOWN *)lpvDest;
if (lpUnknown)
IUnknown_AddRef(lpUnknown);
if (*lpDest)
IUnknown_Release(*lpDest);
*lpDest = lpUnknown;
} else {
/* Copy the data over */
memcpy(lpvDest, pvData, psa->cbElements);
}
}
}
SafeArrayUnlock(psa);
}
return hRet;
}
/*************************************************************************
* SafeArrayGetElement (OLEAUT32.25)
*
* Get an item from a SafeArray.
*
* PARAMS
* psa [I] SafeArray to get from
* rgIndices [I] Indices to get from
* pvData [O] Destination for data
*
* RETURNS
* Success: S_OK. The item data is returned in pvData.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI SafeArrayGetElement(SAFEARRAY *psa, LONG *rgIndices, void *pvData)
{
HRESULT hRet;
TRACE("(%p,%p,%p)\n", psa, rgIndices, pvData);
if (!psa || !rgIndices || !pvData)
return E_INVALIDARG;
hRet = SafeArrayLock(psa);
if (SUCCEEDED(hRet))
{
PVOID lpvSrc;
hRet = SafeArrayPtrOfIndex(psa, rgIndices, &lpvSrc);
if (SUCCEEDED(hRet))
{
if (psa->fFeatures & FADF_VARIANT)
{
VARIANT* lpVariant = (VARIANT*)lpvSrc;
VARIANT* lpDest = (VARIANT*)pvData;
/* The original content of pvData is ignored. */
V_VT(lpDest) = VT_EMPTY;
hRet = VariantCopy(lpDest, lpVariant);
if (FAILED(hRet)) FIXME("VariantCopy failed with 0x%x\n", hRet);
}
else if (psa->fFeatures & FADF_BSTR)
{
BSTR* lpBstr = (BSTR*)lpvSrc;
BSTR* lpDest = (BSTR*)pvData;
if (*lpBstr)
{
*lpDest = SysAllocStringByteLen((char*)*lpBstr, SysStringByteLen(*lpBstr));
if (!*lpBstr)
hRet = E_OUTOFMEMORY;
}
else
*lpDest = NULL;
}
else
{
if (psa->fFeatures & (FADF_UNKNOWN|FADF_DISPATCH))
{
LPUNKNOWN *lpUnknown = (LPUNKNOWN *)lpvSrc;
if (*lpUnknown)
IUnknown_AddRef(*lpUnknown);
}
/* Copy the data over */
memcpy(pvData, lpvSrc, psa->cbElements);
}
}
SafeArrayUnlock(psa);
}
return hRet;
}
/*************************************************************************
* SafeArrayGetUBound (OLEAUT32.19)
*
* Get the upper bound for a given SafeArray dimension
*
* PARAMS
* psa [I] Array to get dimension upper bound from
* nDim [I] The dimension number to get the upper bound of
* plUbound [O] Destination for the upper bound
*
* RETURNS
* Success: S_OK. plUbound contains the dimensions upper bound.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI SafeArrayGetUBound(SAFEARRAY *psa, UINT nDim, LONG *plUbound)
{
TRACE("(%p,%d,%p)\n", psa, nDim, plUbound);
if (!psa || !plUbound)
return E_INVALIDARG;
if(!nDim || nDim > psa->cDims)
return DISP_E_BADINDEX;
*plUbound = psa->rgsabound[psa->cDims - nDim].lLbound +
psa->rgsabound[psa->cDims - nDim].cElements - 1;
return S_OK;
}
/*************************************************************************
* SafeArrayGetLBound (OLEAUT32.20)
*
* Get the lower bound for a given SafeArray dimension
*
* PARAMS
* psa [I] Array to get dimension lower bound from
* nDim [I] The dimension number to get the lowe bound of
* plLbound [O] Destination for the lower bound
*
* RETURNS
* Success: S_OK. plUbound contains the dimensions lower bound.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI SafeArrayGetLBound(SAFEARRAY *psa, UINT nDim, LONG *plLbound)
{
TRACE("(%p,%d,%p)\n", psa, nDim, plLbound);
if (!psa || !plLbound)
return E_INVALIDARG;
if(!nDim || nDim > psa->cDims)
return DISP_E_BADINDEX;
*plLbound = psa->rgsabound[psa->cDims - nDim].lLbound;
return S_OK;
}
/*************************************************************************
* SafeArrayGetDim (OLEAUT32.17)
*
* Get the number of dimensions in a SafeArray.
*
* PARAMS
* psa [I] Array to get the dimensions of
*
* RETURNS
* The number of array dimensions in psa, or 0 if psa is NULL.
*
* NOTES
* See SafeArray.
*/
UINT WINAPI SafeArrayGetDim(SAFEARRAY *psa)
{
TRACE("(%p) returning %d\n", psa, psa ? psa->cDims : 0u);
return psa ? psa->cDims : 0;
}
/*************************************************************************
* SafeArrayGetElemsize (OLEAUT32.18)
*
* Get the size of an element in a SafeArray.
*
* PARAMS
* psa [I] Array to get the element size from
*
* RETURNS
* The size of a single element in psa, or 0 if psa is NULL.
*
* NOTES
* See SafeArray.
*/
UINT WINAPI SafeArrayGetElemsize(SAFEARRAY *psa)
{
TRACE("(%p) returning %d\n", psa, psa ? psa->cbElements : 0u);
return psa ? psa->cbElements : 0;
}
/*************************************************************************
* SafeArrayAccessData (OLEAUT32.23)
*
* Lock a SafeArray and return a pointer to its data.
*
* PARAMS
* psa [I] Array to get the data pointer from
* ppvData [O] Destination for the arrays data pointer
*
* RETURNS
* Success: S_OK. ppvData contains the arrays data pointer, and the array
* is locked.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI SafeArrayAccessData(SAFEARRAY *psa, void **ppvData)
{
TRACE("(%p,%p)\n", psa, ppvData);
if(!psa || !ppvData)
return E_INVALIDARG;
if (SUCCEEDED(SafeArrayLock(psa)))
{
*ppvData = psa->pvData;
return S_OK;
}
*ppvData = NULL;
return E_UNEXPECTED;
}
/*************************************************************************
* SafeArrayUnaccessData (OLEAUT32.24)
*
* Unlock a SafeArray after accessing its data.
*
* PARAMS
* psa [I] Array to unlock
*
* RETURNS
* Success: S_OK. The array is unlocked.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI SafeArrayUnaccessData(SAFEARRAY *psa)
{
TRACE("(%p)\n", psa);
return SafeArrayUnlock(psa);
}
/************************************************************************
* SafeArrayPtrOfIndex (OLEAUT32.148)
*
* Get the address of an item in a SafeArray.
*
* PARAMS
* psa [I] Array to get the items address from
* rgIndices [I] Index of the item in the array
* ppvData [O] Destination for item address
*
* RETURNS
* Success: S_OK. ppvData contains a pointer to the item.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* This function does not lock the array.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI SafeArrayPtrOfIndex(SAFEARRAY *psa, LONG *rgIndices, void **ppvData)
{
USHORT dim;
ULONG cell = 0, dimensionSize = 1;
SAFEARRAYBOUND* psab;
LONG c1;
TRACE("(%p,%p,%p)\n", psa, rgIndices, ppvData);
/* The general formula for locating the cell number of an entry in an n
* dimensional array (where cn = coordinate in dimension dn) is:
*
* c1 + c2 * sizeof(d1) + c3 * sizeof(d2) ... + cn * sizeof(c(n-1))
*
* We calculate the size of the last dimension at each step through the
* dimensions to avoid recursing to calculate the last dimensions size.
*/
if (!psa || !rgIndices || !ppvData)
return E_INVALIDARG;
psab = psa->rgsabound + psa->cDims - 1;
c1 = *rgIndices++;
if (c1 < psab->lLbound || c1 >= psab->lLbound + (LONG)psab->cElements)
return DISP_E_BADINDEX; /* Initial index out of bounds */
for (dim = 1; dim < psa->cDims; dim++)
{
dimensionSize *= psab->cElements;
psab--;
if (!psab->cElements ||
*rgIndices < psab->lLbound ||
*rgIndices >= psab->lLbound + (LONG)psab->cElements)
return DISP_E_BADINDEX; /* Index out of bounds */
cell += (*rgIndices - psab->lLbound) * dimensionSize;
rgIndices++;
}
cell += (c1 - psa->rgsabound[psa->cDims - 1].lLbound);
*ppvData = (char*)psa->pvData + cell * psa->cbElements;
return S_OK;
}
/************************************************************************
* SafeArrayDestroyData (OLEAUT32.39)
*
* Destroy the data associated with a SafeArray.
*
* PARAMS
* psa [I] Array to delete the data from
*
* RETURNS
* Success: S_OK. All items and the item data are freed.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI SafeArrayDestroyData(SAFEARRAY *psa)
{
TRACE("(%p)\n", psa);
if (!psa)
return E_INVALIDARG;
if (psa->cLocks)
return DISP_E_ARRAYISLOCKED; /* Can't delete a locked array */
/* Delete the actual item data */
if (FAILED(SAFEARRAY_DestroyData(psa, 0)))
return E_UNEXPECTED;
if (psa->pvData)
{
if (psa->fFeatures & FADF_STATIC)
{
ZeroMemory(psa->pvData, SAFEARRAY_GetCellCount(psa) * psa->cbElements);
return S_OK;
}
/* If this is not a vector, free the data memory block */
if (!(psa->fFeatures & FADF_CREATEVECTOR))
{
if (!SAFEARRAY_Free(psa->pvData))
return E_UNEXPECTED;
psa->pvData = NULL;
}
else
psa->fFeatures |= FADF_DATADELETED; /* Mark the data deleted */
}
return S_OK;
}
/************************************************************************
* SafeArrayCopyData (OLEAUT32.412)
*
* Copy all data from one SafeArray to another.
*
* PARAMS
* psaSource [I] Source for copy
* psaTarget [O] Destination for copy
*
* RETURNS
* Success: S_OK. psaTarget contains a copy of psaSource.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* The two arrays must have the same number of dimensions and elements.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI SafeArrayCopyData(SAFEARRAY *psaSource, SAFEARRAY *psaTarget)
{
int dim;
TRACE("(%p,%p)\n", psaSource, psaTarget);
if (!psaSource || !psaTarget ||
psaSource->cDims != psaTarget->cDims ||
psaSource->cbElements != psaTarget->cbElements)
return E_INVALIDARG;
/* Each dimension must be the same size */
for (dim = psaSource->cDims - 1; dim >= 0 ; dim--)
if (psaSource->rgsabound[dim].cElements !=
psaTarget->rgsabound[dim].cElements)
return E_INVALIDARG;
if (SUCCEEDED(SAFEARRAY_DestroyData(psaTarget, 0)) &&
SUCCEEDED(SAFEARRAY_CopyData(psaSource, psaTarget)))
return S_OK;
return E_UNEXPECTED;
}
/************************************************************************
* SafeArrayDestroy (OLEAUT32.16)
*
* Destroy a SafeArray.
*
* PARAMS
* psa [I] Array to destroy
*
* RETURNS
* Success: S_OK. All resources used by the array are freed.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI SafeArrayDestroy(SAFEARRAY *psa)
{
TRACE("(%p)\n", psa);
if(!psa)
return S_OK;
if(psa->cLocks > 0)
return DISP_E_ARRAYISLOCKED;
/* Native doesn't check to see if the free succeeds */
SafeArrayDestroyData(psa);
SafeArrayDestroyDescriptor(psa);
return S_OK;
}
/************************************************************************
* SafeArrayCopy (OLEAUT32.27)
*
* Make a duplicate of a SafeArray.
*
* PARAMS
* psa [I] Source for copy
* ppsaOut [O] Destination for new copy
*
* RETURNS
* Success: S_OK. ppsaOut contains a copy of the array.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI SafeArrayCopy(SAFEARRAY *psa, SAFEARRAY **ppsaOut)
{
HRESULT hRet;
TRACE("(%p,%p)\n", psa, ppsaOut);
if (!ppsaOut)
return E_INVALIDARG;
*ppsaOut = NULL;
if (!psa)
return S_OK; /* Handles copying of NULL arrays */
if (!psa->cbElements)
{
ERR("not copying an array of 0 elements\n");
return E_INVALIDARG;
}
if (psa->fFeatures & (FADF_RECORD|FADF_HAVEIID|FADF_HAVEVARTYPE))
{
VARTYPE vt;
if (FAILED(SafeArrayGetVartype(psa, &vt)))
hRet = E_UNEXPECTED;
else
hRet = SafeArrayAllocDescriptorEx(vt, psa->cDims, ppsaOut);
}
else
{
hRet = SafeArrayAllocDescriptor(psa->cDims, ppsaOut);
if (SUCCEEDED(hRet))
{
(*ppsaOut)->fFeatures = psa->fFeatures & ~FADF_CREATEVECTOR;
(*ppsaOut)->cbElements = psa->cbElements;
}
}
if (SUCCEEDED(hRet))
{
/* Copy dimension bounds */
memcpy((*ppsaOut)->rgsabound, psa->rgsabound, psa->cDims * sizeof(SAFEARRAYBOUND));
(*ppsaOut)->pvData = SAFEARRAY_Malloc(SAFEARRAY_GetCellCount(psa) * psa->cbElements);
if ((*ppsaOut)->pvData)
{
hRet = SAFEARRAY_CopyData(psa, *ppsaOut);
if (SUCCEEDED(hRet))
return hRet;
SAFEARRAY_Free((*ppsaOut)->pvData);
}
SafeArrayDestroyDescriptor(*ppsaOut);
}
*ppsaOut = NULL;
return hRet;
}
/************************************************************************
* SafeArrayRedim (OLEAUT32.40)
*
* Changes the characteristics of the last dimension of a SafeArray
*
* PARAMS
* psa [I] Array to change
* psabound [I] New bound details for the last dimension
*
* RETURNS
* Success: S_OK. psa is updated to reflect the new bounds.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI SafeArrayRedim(SAFEARRAY *psa, SAFEARRAYBOUND *psabound)
{
SAFEARRAYBOUND *oldBounds;
TRACE("(%p,%p)\n", psa, psabound);
if (!psa || psa->fFeatures & FADF_FIXEDSIZE || !psabound)
return E_INVALIDARG;
if (psa->cLocks > 0)
return DISP_E_ARRAYISLOCKED;
if (FAILED(SafeArrayLock(psa)))
return E_UNEXPECTED;
oldBounds = psa->rgsabound;
oldBounds->lLbound = psabound->lLbound;
if (psabound->cElements != oldBounds->cElements)
{
if (psabound->cElements < oldBounds->cElements)
{
/* Shorten the final dimension. */
ULONG ulStartCell = psabound->cElements *
(SAFEARRAY_GetCellCount(psa) / oldBounds->cElements);
SAFEARRAY_DestroyData(psa, ulStartCell);
}
else
{
/* Lengthen the final dimension */
ULONG ulOldSize, ulNewSize;
PVOID pvNewData;
ulOldSize = SAFEARRAY_GetCellCount(psa) * psa->cbElements;
if (ulOldSize)
ulNewSize = (ulOldSize / oldBounds->cElements) * psabound->cElements;
else {
int oldelems = oldBounds->cElements;
oldBounds->cElements = psabound->cElements;
ulNewSize = SAFEARRAY_GetCellCount(psa) * psa->cbElements;
oldBounds->cElements = oldelems;
}
if (!(pvNewData = SAFEARRAY_Malloc(ulNewSize)))
{
SafeArrayUnlock(psa);
return E_UNEXPECTED;
}
memcpy(pvNewData, psa->pvData, ulOldSize);
SAFEARRAY_Free(psa->pvData);
psa->pvData = pvNewData;
}
oldBounds->cElements = psabound->cElements;
}
SafeArrayUnlock(psa);
return S_OK;
}
/************************************************************************
* SafeArrayGetVartype (OLEAUT32.77)
*
* Get the type of the items in a SafeArray.
*
* PARAMS
* psa [I] Array to get the type from
* pvt [O] Destination for the type
*
* RETURNS
* Success: S_OK. pvt contains the type of the items.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI SafeArrayGetVartype(SAFEARRAY* psa, VARTYPE* pvt)
{
TRACE("(%p,%p)\n", psa, pvt);
if (!psa || !pvt)
return E_INVALIDARG;
if (psa->fFeatures & FADF_RECORD)
*pvt = VT_RECORD;
else if (psa->fFeatures & FADF_HAVEIID)
*pvt = VT_UNKNOWN;
else if (psa->fFeatures & FADF_HAVEVARTYPE)
{
VARTYPE vt = SAFEARRAY_GetHiddenDWORD(psa);
*pvt = vt;
}
else
return E_INVALIDARG;
return S_OK;
}
/************************************************************************
* SafeArraySetRecordInfo (OLEAUT32.@)
*
* Set the record info for a SafeArray.
*
* PARAMS
* psa [I] Array to set the record info for
* pRinfo [I] Record info
*
* RETURNS
* Success: S_OK. The record info is stored with the array.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI SafeArraySetRecordInfo(SAFEARRAY *psa, IRecordInfo *pRinfo)
{
IRecordInfo** dest = (IRecordInfo**)psa;
TRACE("(%p,%p)\n", psa, pRinfo);
if (!psa || !(psa->fFeatures & FADF_RECORD))
return E_INVALIDARG;
if (pRinfo)
IRecordInfo_AddRef(pRinfo);
if (dest[-1])
IRecordInfo_Release(dest[-1]);
dest[-1] = pRinfo;
return S_OK;
}
/************************************************************************
* SafeArrayGetRecordInfo (OLEAUT32.@)
*
* Get the record info from a SafeArray.
*
* PARAMS
* psa [I] Array to get the record info from
* pRinfo [O] Destination for the record info
*
* RETURNS
* Success: S_OK. pRinfo contains the record info, or NULL if there was none.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI SafeArrayGetRecordInfo(SAFEARRAY *psa, IRecordInfo **pRinfo)
{
IRecordInfo** src = (IRecordInfo**)psa;
TRACE("(%p,%p)\n", psa, pRinfo);
if (!psa || !pRinfo || !(psa->fFeatures & FADF_RECORD))
return E_INVALIDARG;
*pRinfo = src[-1];
if (*pRinfo)
IRecordInfo_AddRef(*pRinfo);
return S_OK;
}
/************************************************************************
* SafeArraySetIID (OLEAUT32.@)
*
* Set the IID for a SafeArray.
*
* PARAMS
* psa [I] Array to set the IID from
* guid [I] IID
*
* RETURNS
* Success: S_OK. The IID is stored with the array
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI SafeArraySetIID(SAFEARRAY *psa, REFGUID guid)
{
GUID* dest = (GUID*)psa;
TRACE("(%p,%s)\n", psa, debugstr_guid(guid));
if (!psa || !guid || !(psa->fFeatures & FADF_HAVEIID))
return E_INVALIDARG;
dest[-1] = *guid;
return S_OK;
}
/************************************************************************
* SafeArrayGetIID (OLEAUT32.@)
*
* Get the IID from a SafeArray.
*
* PARAMS
* psa [I] Array to get the ID from
* pGuid [O] Destination for the IID
*
* RETURNS
* Success: S_OK. pRinfo contains the IID, or NULL if there was none.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI SafeArrayGetIID(SAFEARRAY *psa, GUID *pGuid)
{
GUID* src = (GUID*)psa;
TRACE("(%p,%p)\n", psa, pGuid);
if (!psa || !pGuid || !(psa->fFeatures & FADF_HAVEIID))
return E_INVALIDARG;
*pGuid = src[-1];
return S_OK;
}
/************************************************************************
* VectorFromBstr (OLEAUT32.@)
*
* Create a SafeArray Vector from the bytes of a BSTR.
*
* PARAMS
* bstr [I] String to get bytes from
* ppsa [O] Destination for the array
*
* RETURNS
* Success: S_OK. ppsa contains the strings bytes as a VT_UI1 array.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI VectorFromBstr(BSTR bstr, SAFEARRAY **ppsa)
{
SAFEARRAYBOUND sab;
TRACE("(%p,%p)\n", bstr, ppsa);
if (!ppsa)
return E_INVALIDARG;
sab.lLbound = 0;
sab.cElements = SysStringByteLen(bstr);
*ppsa = SAFEARRAY_Create(VT_UI1, 1, &sab, 0);
if (*ppsa)
{
memcpy((*ppsa)->pvData, bstr, sab.cElements);
return S_OK;
}
return E_OUTOFMEMORY;
}
/************************************************************************
* BstrFromVector (OLEAUT32.@)
*
* Create a BSTR from a SafeArray.
*
* PARAMS
* psa [I] Source array
* pbstr [O] Destination for output BSTR
*
* RETURNS
* Success: S_OK. pbstr contains the arrays data.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* psa must be a 1 dimensional array of a 1 byte type.
*
* NOTES
* See SafeArray.
*/
HRESULT WINAPI BstrFromVector(SAFEARRAY *psa, BSTR *pbstr)
{
TRACE("(%p,%p)\n", psa, pbstr);
if (!pbstr)
return E_INVALIDARG;
*pbstr = NULL;
if (!psa || psa->cbElements != 1 || psa->cDims != 1)
return E_INVALIDARG;
*pbstr = SysAllocStringByteLen(psa->pvData, psa->rgsabound[0].cElements);
if (!*pbstr)
return E_OUTOFMEMORY;
return S_OK;
}
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