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Implement better version of DPA_Merge.

This commit is contained in:
Guy L. Albertelli 2000-11-30 19:58:56 +00:00 committed by Alexandre Julliard
parent b75b823a99
commit 9717845a28
1 changed files with 21 additions and 27 deletions
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48
dlls/comctl32/comctl32undoc.c
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@ -166,12 +166,12 @@ DPA_SaveStream (const HDPA hDpa, DPALOADPROC loadProc, IStream *pStream, LPARAM
* DPA_Merge [COMCTL32.11]
*
* PARAMS
* hdpa1 [I] handle to a dynamic pointer array
* hdpa2 [I] handle to a dynamic pointer array
* dwFlags [I] flags
* pfnSort [I] pointer to sort function
* pfnMerge [I] pointer to merge function
* lParam [I] application specific value
* hdpa1 [I] handle to a dynamic pointer array
* hdpa2 [I] handle to a dynamic pointer array
* dwFlags [I] flags
* pfnCompare [I] pointer to sort function
* pfnMerge [I] pointer to merge function
* lParam [I] application specific value
*
* NOTES
* No more information available yet!
@ -182,15 +182,11 @@ DPA_Merge (const HDPA hdpa1, const HDPA hdpa2, DWORD dwFlags,
PFNDPACOMPARE pfnCompare, PFNDPAMERGE pfnMerge, LPARAM lParam)
{
INT nCount;
#if 0 /* these go with the "incomplete implementation" below */
LPVOID pWork1, pWork2;
LPVOID *pWork1, *pWork2;
INT nResult;
INT nIndex;
INT nNewItems;
#endif
TRACE("(%p %p %08lx %p %p %08lx): semi stub!\n",
TRACE("%p %p %08lx %p %p %08lx)\n",
hdpa1, hdpa2, dwFlags, pfnCompare, pfnMerge, lParam);
if (IsBadWritePtr (hdpa1, sizeof(DPA)))
@ -222,12 +218,7 @@ DPA_Merge (const HDPA hdpa1, const HDPA hdpa2, DWORD dwFlags,
hdpa1->nItemCount, hdpa2->nItemCount);
/* preliminary hack - simply append the pointer list hdpa2 to hdpa1 */
for (nCount = 0; nCount < hdpa2->nItemCount; nCount++)
DPA_InsertPtr (hdpa1, hdpa1->nItemCount + 1, hdpa2->ptrs[nCount]);
#if 0
/* incomplete implementation */
/* working but untrusted implementation */
pWork1 = &(hdpa1->ptrs[hdpa1->nItemCount - 1]);
pWork2 = &(hdpa2->ptrs[hdpa2->nItemCount - 1]);
@ -237,19 +228,24 @@ DPA_Merge (const HDPA hdpa1, const HDPA hdpa2, DWORD dwFlags,
do
{
nResult = (pfnCompare)(pWork1, pWork2, lParam);
if (nIndex < 0) break;
nResult = (pfnCompare)(*pWork1, *pWork2, lParam);
TRACE("compare result=%d, dpa1.cnt=%d, dpa2.cnt=%d\n",
nResult, nIndex, nCount);
if (nResult == 0)
{
PVOID ptr;
ptr = (pfnMerge)(1, pWork1, pWork2, lParam);
ptr = (pfnMerge)(1, *pWork1, *pWork2, lParam);
if (!ptr)
return FALSE;
nCount--;
pWork2--;
pWork1 = ptr;
*pWork1 = ptr;
nIndex--;
pWork1--;
}
else if (nResult < 0)
{
@ -261,6 +257,8 @@ DPA_Merge (const HDPA hdpa1, const HDPA hdpa2, DWORD dwFlags,
(pfnMerge)(2, ptr, NULL, lParam);
}
nIndex--;
pWork1--;
}
else
{
@ -268,21 +266,17 @@ DPA_Merge (const HDPA hdpa1, const HDPA hdpa2, DWORD dwFlags,
{
PVOID ptr;
ptr = (pfnMerge)(3, pWork2, NULL, lParam);
ptr = (pfnMerge)(3, *pWork2, NULL, lParam);
if (!ptr)
return FALSE;
DPA_InsertPtr (hdpa1, nIndex, ptr);
}
}
nCount--;
pWork2--;
}
nIndex--;
pWork1--;
}
while (nCount >= 0);
#endif
return TRUE;
}