| /* |
| * Dynamic pointer array (DPA) implementation |
| * |
| * Copyright 1998 Eric Kohl |
| * 1998 Juergen Schmied <j.schmied@metronet.de> |
| * 2000 Eric Kohl for CodeWeavers |
| * |
| * 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 |
| * |
| * NOTES |
| * These functions were involuntarily documented by Microsoft in 2002 as |
| * the outcome of an anti-trust suit brought by various U.S. governments. |
| * As a result the specifications on MSDN are inaccurate, incomplete |
| * and misleading. A much more complete (unofficial) documentation is |
| * available at: |
| * |
| * http://members.ozemail.com.au/~geoffch/samples/win32/shell/comctl32 |
| */ |
| |
| #define COBJMACROS |
| |
| #include <stdarg.h> |
| #include <limits.h> |
| |
| #include "windef.h" |
| #include "winbase.h" |
| #include "winuser.h" |
| #include "commctrl.h" |
| #include "objbase.h" |
| |
| #include "comctl32.h" |
| #include "wine/debug.h" |
| |
| WINE_DEFAULT_DEBUG_CHANNEL(dpa); |
| |
| typedef struct _DPA |
| { |
| INT nItemCount; |
| LPVOID *ptrs; |
| HANDLE hHeap; |
| INT nGrow; |
| INT nMaxCount; |
| } DPA; |
| |
| typedef struct _STREAMDATA |
| { |
| DWORD dwSize; |
| DWORD dwData2; |
| DWORD dwItems; |
| } STREAMDATA, *PSTREAMDATA; |
| |
| /************************************************************************** |
| * DPA_LoadStream [COMCTL32.9] |
| * |
| * Loads a dynamic pointer array from a stream |
| * |
| * PARAMS |
| * phDpa [O] pointer to a handle to a dynamic pointer array |
| * loadProc [I] pointer to a callback function |
| * pStream [I] pointer to a stream |
| * pData [I] pointer to callback data |
| * |
| * RETURNS |
| * Success: S_OK, S_FALSE - partial success |
| * Failure: HRESULT error code |
| * |
| * NOTES |
| * No more information available yet! |
| */ |
| HRESULT WINAPI DPA_LoadStream (HDPA *phDpa, PFNDPASTREAM loadProc, |
| IStream *pStream, LPVOID pData) |
| { |
| HRESULT errCode; |
| LARGE_INTEGER position; |
| ULARGE_INTEGER initial_pos; |
| STREAMDATA streamData; |
| DPASTREAMINFO streamInfo; |
| ULONG ulRead; |
| HDPA hDpa; |
| PVOID *ptr; |
| |
| TRACE ("phDpa=%p loadProc=%p pStream=%p pData=%p\n", |
| phDpa, loadProc, pStream, pData); |
| |
| if (!phDpa || !loadProc || !pStream) |
| return E_INVALIDARG; |
| |
| *phDpa = NULL; |
| |
| position.QuadPart = 0; |
| |
| errCode = IStream_Seek (pStream, position, STREAM_SEEK_CUR, &initial_pos); |
| if (errCode != S_OK) |
| return errCode; |
| |
| memset(&streamData, 0, sizeof(STREAMDATA)); |
| errCode = IStream_Read (pStream, &streamData, sizeof(STREAMDATA), &ulRead); |
| if (errCode != S_OK) |
| return errCode; |
| |
| TRACE ("dwSize=%u dwData2=%u dwItems=%u\n", |
| streamData.dwSize, streamData.dwData2, streamData.dwItems); |
| |
| if (ulRead < sizeof(STREAMDATA) || |
| streamData.dwSize < sizeof(STREAMDATA) || streamData.dwData2 != 1) { |
| /* back to initial position */ |
| position.QuadPart = initial_pos.QuadPart; |
| IStream_Seek (pStream, position, STREAM_SEEK_SET, NULL); |
| return E_FAIL; |
| } |
| |
| if (streamData.dwItems > (UINT_MAX / 2 / sizeof(VOID*))) /* 536870911 */ |
| return E_OUTOFMEMORY; |
| |
| /* create the dpa */ |
| hDpa = DPA_Create (streamData.dwItems); |
| if (!hDpa) |
| return E_OUTOFMEMORY; |
| |
| if (!DPA_Grow (hDpa, streamData.dwItems)) { |
| DPA_Destroy (hDpa); |
| return E_OUTOFMEMORY; |
| } |
| |
| /* load data from the stream into the dpa */ |
| ptr = hDpa->ptrs; |
| for (streamInfo.iPos = 0; streamInfo.iPos < streamData.dwItems; streamInfo.iPos++) { |
| errCode = (loadProc)(&streamInfo, pStream, pData); |
| if (errCode != S_OK) { |
| errCode = S_FALSE; |
| break; |
| } |
| |
| *ptr = streamInfo.pvItem; |
| ptr++; |
| } |
| |
| /* set the number of items */ |
| hDpa->nItemCount = streamInfo.iPos; |
| |
| /* store the handle to the dpa */ |
| *phDpa = hDpa; |
| TRACE ("new hDpa=%p, errorcode=%x\n", hDpa, errCode); |
| |
| return errCode; |
| } |
| |
| |
| /************************************************************************** |
| * DPA_SaveStream [COMCTL32.10] |
| * |
| * Saves a dynamic pointer array to a stream |
| * |
| * PARAMS |
| * hDpa [I] handle to a dynamic pointer array |
| * saveProc [I] pointer to a callback function |
| * pStream [I] pointer to a stream |
| * pData [I] pointer to callback data |
| * |
| * RETURNS |
| * Success: S_OK, S_FALSE - partial success |
| * Failure: HRESULT error code |
| * |
| * NOTES |
| * No more information available yet! |
| */ |
| HRESULT WINAPI DPA_SaveStream (HDPA hDpa, PFNDPASTREAM saveProc, |
| IStream *pStream, LPVOID pData) |
| { |
| LARGE_INTEGER position; |
| ULARGE_INTEGER initial_pos, curr_pos; |
| STREAMDATA streamData; |
| DPASTREAMINFO streamInfo; |
| HRESULT hr; |
| PVOID *ptr; |
| |
| TRACE ("hDpa=%p saveProc=%p pStream=%p pData=%p\n", |
| hDpa, saveProc, pStream, pData); |
| |
| if (!hDpa || !saveProc || !pStream) return E_INVALIDARG; |
| |
| /* save initial position to write header after completion */ |
| position.QuadPart = 0; |
| hr = IStream_Seek (pStream, position, STREAM_SEEK_CUR, &initial_pos); |
| if (hr != S_OK) |
| return hr; |
| |
| /* write empty header */ |
| streamData.dwSize = sizeof(streamData); |
| streamData.dwData2 = 1; |
| streamData.dwItems = 0; |
| |
| hr = IStream_Write (pStream, &streamData, sizeof(streamData), NULL); |
| if (hr != S_OK) { |
| position.QuadPart = initial_pos.QuadPart; |
| IStream_Seek (pStream, position, STREAM_SEEK_SET, NULL); |
| return hr; |
| } |
| |
| /* no items - we're done */ |
| if (hDpa->nItemCount == 0) return S_OK; |
| |
| ptr = hDpa->ptrs; |
| for (streamInfo.iPos = 0; streamInfo.iPos < hDpa->nItemCount; streamInfo.iPos++) { |
| streamInfo.pvItem = *ptr; |
| hr = (saveProc)(&streamInfo, pStream, pData); |
| if (hr != S_OK) { |
| hr = S_FALSE; |
| break; |
| } |
| ptr++; |
| } |
| |
| /* write updated header */ |
| position.QuadPart = 0; |
| IStream_Seek (pStream, position, STREAM_SEEK_CUR, &curr_pos); |
| |
| streamData.dwSize = curr_pos.QuadPart - initial_pos.QuadPart; |
| streamData.dwData2 = 1; |
| streamData.dwItems = streamInfo.iPos; |
| |
| position.QuadPart = initial_pos.QuadPart; |
| IStream_Seek (pStream, position, STREAM_SEEK_SET, NULL); |
| IStream_Write (pStream, &streamData, sizeof(streamData), NULL); |
| |
| position.QuadPart = curr_pos.QuadPart; |
| IStream_Seek (pStream, position, STREAM_SEEK_SET, NULL); |
| |
| return hr; |
| } |
| |
| |
| /************************************************************************** |
| * DPA_Merge [COMCTL32.11] |
| * |
| * Merge two dynamic pointers arrays. |
| * |
| * PARAMS |
| * 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 |
| * |
| * RETURNS |
| * Success: TRUE |
| * Failure: FALSE |
| * |
| * NOTES |
| * No more information available yet! |
| */ |
| BOOL WINAPI DPA_Merge (HDPA hdpa1, HDPA hdpa2, DWORD dwFlags, |
| PFNDPACOMPARE pfnCompare, PFNDPAMERGE pfnMerge, |
| LPARAM lParam) |
| { |
| INT nCount; |
| LPVOID *pWork1, *pWork2; |
| INT nResult, i; |
| INT nIndex; |
| |
| TRACE("(%p %p %08x %p %p %08lx)\n", |
| hdpa1, hdpa2, dwFlags, pfnCompare, pfnMerge, lParam); |
| |
| if (IsBadWritePtr (hdpa1, sizeof(*hdpa1))) |
| return FALSE; |
| |
| if (IsBadWritePtr (hdpa2, sizeof(*hdpa2))) |
| return FALSE; |
| |
| if (IsBadCodePtr ((FARPROC)pfnCompare)) |
| return FALSE; |
| |
| if (IsBadCodePtr ((FARPROC)pfnMerge)) |
| return FALSE; |
| |
| if (!(dwFlags & DPAM_SORTED)) { |
| TRACE("sorting dpa's!\n"); |
| if (hdpa1->nItemCount > 0) |
| DPA_Sort (hdpa1, pfnCompare, lParam); |
| TRACE ("dpa 1 sorted!\n"); |
| if (hdpa2->nItemCount > 0) |
| DPA_Sort (hdpa2, pfnCompare, lParam); |
| TRACE ("dpa 2 sorted!\n"); |
| } |
| |
| if (hdpa2->nItemCount < 1) |
| return TRUE; |
| |
| TRACE("hdpa1->nItemCount=%d hdpa2->nItemCount=%d\n", |
| hdpa1->nItemCount, hdpa2->nItemCount); |
| |
| |
| nIndex = hdpa1->nItemCount - 1; |
| nCount = hdpa2->nItemCount - 1; |
| |
| do |
| { |
| pWork1 = &hdpa1->ptrs[nIndex]; |
| pWork2 = &hdpa2->ptrs[nCount]; |
| |
| if (nIndex < 0) { |
| if ((nCount >= 0) && (dwFlags & DPAM_UNION)) { |
| /* Now insert the remaining new items into DPA 1 */ |
| TRACE("%d items to be inserted at start of DPA 1\n", |
| nCount+1); |
| for (i=nCount; i>=0; i--) { |
| PVOID ptr; |
| |
| ptr = (pfnMerge)(DPAMM_INSERT, *pWork2, NULL, lParam); |
| if (!ptr) |
| return FALSE; |
| DPA_InsertPtr (hdpa1, 0, ptr); |
| pWork2--; |
| } |
| } |
| 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)(DPAMM_MERGE, *pWork1, *pWork2, lParam); |
| if (!ptr) |
| return FALSE; |
| |
| nCount--; |
| *pWork1 = ptr; |
| nIndex--; |
| } |
| else if (nResult > 0) |
| { |
| /* item in DPA 1 missing from DPA 2 */ |
| if (dwFlags & DPAM_INTERSECT) |
| { |
| /* Now delete the extra item in DPA1 */ |
| PVOID ptr; |
| |
| ptr = DPA_DeletePtr (hdpa1, nIndex); |
| |
| (pfnMerge)(DPAMM_DELETE, ptr, NULL, lParam); |
| } |
| nIndex--; |
| } |
| else |
| { |
| /* new item in DPA 2 */ |
| if (dwFlags & DPAM_UNION) |
| { |
| /* Now insert the new item in DPA 1 */ |
| PVOID ptr; |
| |
| ptr = (pfnMerge)(DPAMM_INSERT, *pWork2, NULL, lParam); |
| if (!ptr) |
| return FALSE; |
| DPA_InsertPtr (hdpa1, nIndex+1, ptr); |
| } |
| nCount--; |
| } |
| |
| } |
| while (nCount >= 0); |
| |
| return TRUE; |
| } |
| |
| |
| /************************************************************************** |
| * DPA_Destroy [COMCTL32.329] |
| * |
| * Destroys a dynamic pointer array |
| * |
| * PARAMS |
| * hdpa [I] handle (pointer) to the pointer array |
| * |
| * RETURNS |
| * Success: TRUE |
| * Failure: FALSE |
| */ |
| BOOL WINAPI DPA_Destroy (HDPA hdpa) |
| { |
| TRACE("(%p)\n", hdpa); |
| |
| if (!hdpa) |
| return FALSE; |
| |
| if (hdpa->ptrs && (!HeapFree (hdpa->hHeap, 0, hdpa->ptrs))) |
| return FALSE; |
| |
| return HeapFree (hdpa->hHeap, 0, hdpa); |
| } |
| |
| |
| /************************************************************************** |
| * DPA_Grow [COMCTL32.330] |
| * |
| * Sets the growth amount. |
| * |
| * PARAMS |
| * hdpa [I] handle (pointer) to the existing (source) pointer array |
| * nGrow [I] number of items by which the array grows when it's too small |
| * |
| * RETURNS |
| * Success: TRUE |
| * Failure: FALSE |
| */ |
| BOOL WINAPI DPA_Grow (HDPA hdpa, INT nGrow) |
| { |
| INT items; |
| TRACE("(%p %d)\n", hdpa, nGrow); |
| |
| if (!hdpa) |
| return FALSE; |
| |
| nGrow = max( 8, nGrow ); |
| items = nGrow * (((hdpa->nMaxCount - 1) / nGrow) + 1); |
| if (items > hdpa->nMaxCount) |
| { |
| void *ptr; |
| |
| if (hdpa->ptrs) |
| ptr = HeapReAlloc( hdpa->hHeap, HEAP_ZERO_MEMORY, hdpa->ptrs, items * sizeof(LPVOID) ); |
| else |
| ptr = HeapAlloc( hdpa->hHeap, HEAP_ZERO_MEMORY, items * sizeof(LPVOID) ); |
| if (!ptr) return FALSE; |
| hdpa->nMaxCount = items; |
| hdpa->ptrs = ptr; |
| } |
| hdpa->nGrow = nGrow; |
| |
| return TRUE; |
| } |
| |
| |
| /************************************************************************** |
| * DPA_Clone [COMCTL32.331] |
| * |
| * Copies a pointer array to another one or creates a copy |
| * |
| * PARAMS |
| * hdpa [I] handle (pointer) to the existing (source) pointer array |
| * hdpaNew [O] handle (pointer) to the destination pointer array |
| * |
| * RETURNS |
| * Success: pointer to the destination pointer array. |
| * Failure: NULL |
| * |
| * NOTES |
| * - If the 'hdpaNew' is a NULL-Pointer, a copy of the source pointer |
| * array will be created and its handle (pointer) is returned. |
| * - If 'hdpa' is a NULL-Pointer, the original implementation crashes, |
| * this implementation just returns NULL. |
| */ |
| HDPA WINAPI DPA_Clone (const HDPA hdpa, HDPA hdpaNew) |
| { |
| INT nNewItems, nSize; |
| HDPA hdpaTemp; |
| |
| if (!hdpa) |
| return NULL; |
| |
| TRACE("(%p %p)\n", hdpa, hdpaNew); |
| |
| if (!hdpaNew) { |
| /* create a new DPA */ |
| hdpaTemp = HeapAlloc (hdpa->hHeap, HEAP_ZERO_MEMORY, |
| sizeof(*hdpaTemp)); |
| hdpaTemp->hHeap = hdpa->hHeap; |
| hdpaTemp->nGrow = hdpa->nGrow; |
| } |
| else |
| hdpaTemp = hdpaNew; |
| |
| if (hdpaTemp->ptrs) { |
| /* remove old pointer array */ |
| HeapFree (hdpaTemp->hHeap, 0, hdpaTemp->ptrs); |
| hdpaTemp->ptrs = NULL; |
| hdpaTemp->nItemCount = 0; |
| hdpaTemp->nMaxCount = 0; |
| } |
| |
| /* create a new pointer array */ |
| nNewItems = hdpaTemp->nGrow * |
| (((hdpa->nItemCount - 1) / hdpaTemp->nGrow) + 1); |
| nSize = nNewItems * sizeof(LPVOID); |
| hdpaTemp->ptrs = HeapAlloc (hdpaTemp->hHeap, HEAP_ZERO_MEMORY, nSize); |
| hdpaTemp->nMaxCount = nNewItems; |
| |
| /* clone the pointer array */ |
| hdpaTemp->nItemCount = hdpa->nItemCount; |
| memmove (hdpaTemp->ptrs, hdpa->ptrs, |
| hdpaTemp->nItemCount * sizeof(LPVOID)); |
| |
| return hdpaTemp; |
| } |
| |
| |
| /************************************************************************** |
| * DPA_GetPtr [COMCTL32.332] |
| * |
| * Retrieves a pointer from a dynamic pointer array |
| * |
| * PARAMS |
| * hdpa [I] handle (pointer) to the pointer array |
| * nIndex [I] array index of the desired pointer |
| * |
| * RETURNS |
| * Success: pointer |
| * Failure: NULL |
| */ |
| LPVOID WINAPI DPA_GetPtr (HDPA hdpa, INT nIndex) |
| { |
| TRACE("(%p %d)\n", hdpa, nIndex); |
| |
| if (!hdpa) |
| return NULL; |
| if (!hdpa->ptrs) { |
| WARN("no pointer array.\n"); |
| return NULL; |
| } |
| if ((nIndex < 0) || (nIndex >= hdpa->nItemCount)) { |
| WARN("not enough pointers in array (%d vs %d).\n",nIndex,hdpa->nItemCount); |
| return NULL; |
| } |
| |
| TRACE("-- %p\n", hdpa->ptrs[nIndex]); |
| |
| return hdpa->ptrs[nIndex]; |
| } |
| |
| |
| /************************************************************************** |
| * DPA_GetPtrIndex [COMCTL32.333] |
| * |
| * Retrieves the index of the specified pointer |
| * |
| * PARAMS |
| * hdpa [I] handle (pointer) to the pointer array |
| * p [I] pointer |
| * |
| * RETURNS |
| * Success: index of the specified pointer |
| * Failure: -1 |
| */ |
| INT WINAPI DPA_GetPtrIndex (HDPA hdpa, LPCVOID p) |
| { |
| INT i; |
| |
| if (!hdpa || !hdpa->ptrs) |
| return -1; |
| |
| for (i = 0; i < hdpa->nItemCount; i++) { |
| if (hdpa->ptrs[i] == p) |
| return i; |
| } |
| |
| return -1; |
| } |
| |
| |
| /************************************************************************** |
| * DPA_InsertPtr [COMCTL32.334] |
| * |
| * Inserts a pointer into a dynamic pointer array |
| * |
| * PARAMS |
| * hdpa [I] handle (pointer) to the array |
| * i [I] array index |
| * p [I] pointer to insert |
| * |
| * RETURNS |
| * Success: index of the inserted pointer |
| * Failure: -1 |
| */ |
| INT WINAPI DPA_InsertPtr (HDPA hdpa, INT i, LPVOID p) |
| { |
| TRACE("(%p %d %p)\n", hdpa, i, p); |
| |
| if (!hdpa || i < 0) return -1; |
| |
| /* append item if index is out of bounds */ |
| i = min(hdpa->nItemCount, i); |
| |
| /* create empty spot at the end */ |
| if (!DPA_SetPtr(hdpa, hdpa->nItemCount, 0)) return -1; |
| |
| if (i != hdpa->nItemCount - 1) |
| memmove (hdpa->ptrs + i + 1, hdpa->ptrs + i, |
| (hdpa->nItemCount - i - 1) * sizeof(LPVOID)); |
| |
| hdpa->ptrs[i] = p; |
| return i; |
| } |
| |
| |
| /************************************************************************** |
| * DPA_SetPtr [COMCTL32.335] |
| * |
| * Sets a pointer in the pointer array |
| * |
| * PARAMS |
| * hdpa [I] handle (pointer) to the pointer array |
| * i [I] index of the pointer that will be set |
| * p [I] pointer to be set |
| * |
| * RETURNS |
| * Success: TRUE |
| * Failure: FALSE |
| */ |
| BOOL WINAPI DPA_SetPtr (HDPA hdpa, INT i, LPVOID p) |
| { |
| LPVOID *lpTemp; |
| |
| TRACE("(%p %d %p)\n", hdpa, i, p); |
| |
| if (!hdpa || i < 0) |
| return FALSE; |
| |
| if (hdpa->nItemCount <= i) { |
| /* within the old array */ |
| if (hdpa->nMaxCount <= i) { |
| /* resize the block of memory */ |
| INT nNewItems = |
| hdpa->nGrow * ((((i+1) - 1) / hdpa->nGrow) + 1); |
| INT nSize = nNewItems * sizeof(LPVOID); |
| |
| if (hdpa->ptrs) |
| lpTemp = HeapReAlloc (hdpa->hHeap, HEAP_ZERO_MEMORY, hdpa->ptrs, nSize); |
| else |
| lpTemp = HeapAlloc (hdpa->hHeap, HEAP_ZERO_MEMORY, nSize); |
| |
| if (!lpTemp) |
| return FALSE; |
| |
| hdpa->nMaxCount = nNewItems; |
| hdpa->ptrs = lpTemp; |
| } |
| hdpa->nItemCount = i+1; |
| } |
| |
| /* put the new entry in */ |
| hdpa->ptrs[i] = p; |
| |
| return TRUE; |
| } |
| |
| |
| /************************************************************************** |
| * DPA_DeletePtr [COMCTL32.336] |
| * |
| * Removes a pointer from the pointer array. |
| * |
| * PARAMS |
| * hdpa [I] handle (pointer) to the pointer array |
| * i [I] index of the pointer that will be deleted |
| * |
| * RETURNS |
| * Success: deleted pointer |
| * Failure: NULL |
| */ |
| LPVOID WINAPI DPA_DeletePtr (HDPA hdpa, INT i) |
| { |
| LPVOID *lpDest, *lpSrc, lpTemp = NULL; |
| INT nSize; |
| |
| TRACE("(%p %d)\n", hdpa, i); |
| |
| if ((!hdpa) || i < 0 || i >= hdpa->nItemCount) |
| return NULL; |
| |
| lpTemp = hdpa->ptrs[i]; |
| |
| /* do we need to move ?*/ |
| if (i < hdpa->nItemCount - 1) { |
| lpDest = hdpa->ptrs + i; |
| lpSrc = lpDest + 1; |
| nSize = (hdpa->nItemCount - i - 1) * sizeof(LPVOID); |
| TRACE("-- move dest=%p src=%p size=%x\n", |
| lpDest, lpSrc, nSize); |
| memmove (lpDest, lpSrc, nSize); |
| } |
| |
| hdpa->nItemCount --; |
| |
| /* free memory ?*/ |
| if ((hdpa->nMaxCount - hdpa->nItemCount) >= hdpa->nGrow) { |
| INT nNewItems = max(hdpa->nGrow * 2, hdpa->nItemCount); |
| nSize = nNewItems * sizeof(LPVOID); |
| lpDest = HeapReAlloc (hdpa->hHeap, HEAP_ZERO_MEMORY, |
| hdpa->ptrs, nSize); |
| if (!lpDest) |
| return NULL; |
| |
| hdpa->nMaxCount = nNewItems; |
| hdpa->ptrs = lpDest; |
| } |
| |
| return lpTemp; |
| } |
| |
| |
| /************************************************************************** |
| * DPA_DeleteAllPtrs [COMCTL32.337] |
| * |
| * Removes all pointers and reinitializes the array. |
| * |
| * PARAMS |
| * hdpa [I] handle (pointer) to the pointer array |
| * |
| * RETURNS |
| * Success: TRUE |
| * Failure: FALSE |
| */ |
| BOOL WINAPI DPA_DeleteAllPtrs (HDPA hdpa) |
| { |
| TRACE("(%p)\n", hdpa); |
| |
| if (!hdpa) |
| return FALSE; |
| |
| if (hdpa->ptrs && (!HeapFree (hdpa->hHeap, 0, hdpa->ptrs))) |
| return FALSE; |
| |
| hdpa->nItemCount = 0; |
| hdpa->nMaxCount = hdpa->nGrow * 2; |
| hdpa->ptrs = HeapAlloc (hdpa->hHeap, HEAP_ZERO_MEMORY, |
| hdpa->nMaxCount * sizeof(LPVOID)); |
| |
| return TRUE; |
| } |
| |
| |
| /************************************************************************** |
| * DPA_QuickSort [Internal] |
| * |
| * Ordinary quicksort (used by DPA_Sort). |
| * |
| * PARAMS |
| * lpPtrs [I] pointer to the pointer array |
| * l [I] index of the "left border" of the partition |
| * r [I] index of the "right border" of the partition |
| * pfnCompare [I] pointer to the compare function |
| * lParam [I] user defined value (3rd parameter in compare function) |
| * |
| * RETURNS |
| * NONE |
| */ |
| static VOID DPA_QuickSort (LPVOID *lpPtrs, INT l, INT r, |
| PFNDPACOMPARE pfnCompare, LPARAM lParam) |
| { |
| INT m; |
| LPVOID t; |
| |
| TRACE("l=%i r=%i\n", l, r); |
| |
| if (l==r) /* one element is always sorted */ |
| return; |
| if (r<l) /* oops, got it in the wrong order */ |
| { |
| DPA_QuickSort(lpPtrs, r, l, pfnCompare, lParam); |
| return; |
| } |
| m = (l+r)/2; /* divide by two */ |
| DPA_QuickSort(lpPtrs, l, m, pfnCompare, lParam); |
| DPA_QuickSort(lpPtrs, m+1, r, pfnCompare, lParam); |
| |
| /* join the two sides */ |
| while( (l<=m) && (m<r) ) |
| { |
| if(pfnCompare(lpPtrs[l],lpPtrs[m+1],lParam)>0) |
| { |
| t = lpPtrs[m+1]; |
| memmove(&lpPtrs[l+1],&lpPtrs[l],(m-l+1)*sizeof(lpPtrs[l])); |
| lpPtrs[l] = t; |
| |
| m++; |
| } |
| l++; |
| } |
| } |
| |
| |
| /************************************************************************** |
| * DPA_Sort [COMCTL32.338] |
| * |
| * Sorts a pointer array using a user defined compare function |
| * |
| * PARAMS |
| * hdpa [I] handle (pointer) to the pointer array |
| * pfnCompare [I] pointer to the compare function |
| * lParam [I] user defined value (3rd parameter of compare function) |
| * |
| * RETURNS |
| * Success: TRUE |
| * Failure: FALSE |
| */ |
| BOOL WINAPI DPA_Sort (HDPA hdpa, PFNDPACOMPARE pfnCompare, LPARAM lParam) |
| { |
| if (!hdpa || !pfnCompare) |
| return FALSE; |
| |
| TRACE("(%p %p 0x%lx)\n", hdpa, pfnCompare, lParam); |
| |
| if ((hdpa->nItemCount > 1) && (hdpa->ptrs)) |
| DPA_QuickSort (hdpa->ptrs, 0, hdpa->nItemCount - 1, |
| pfnCompare, lParam); |
| |
| return TRUE; |
| } |
| |
| |
| /************************************************************************** |
| * DPA_Search [COMCTL32.339] |
| * |
| * Searches a pointer array for a specified pointer |
| * |
| * PARAMS |
| * hdpa [I] handle (pointer) to the pointer array |
| * pFind [I] pointer to search for |
| * nStart [I] start index |
| * pfnCompare [I] pointer to the compare function |
| * lParam [I] user defined value (3rd parameter of compare function) |
| * uOptions [I] search options |
| * |
| * RETURNS |
| * Success: index of the pointer in the array. |
| * Failure: -1 |
| */ |
| INT WINAPI DPA_Search (HDPA hdpa, LPVOID pFind, INT nStart, |
| PFNDPACOMPARE pfnCompare, LPARAM lParam, UINT uOptions) |
| { |
| if (!hdpa || !pfnCompare || !pFind) |
| return -1; |
| |
| TRACE("(%p %p %d %p 0x%08lx 0x%08x)\n", |
| hdpa, pFind, nStart, pfnCompare, lParam, uOptions); |
| |
| if (uOptions & DPAS_SORTED) { |
| /* array is sorted --> use binary search */ |
| INT l, r, x, n; |
| LPVOID *lpPtr; |
| |
| /* for binary search ignore start index */ |
| l = 0; |
| r = hdpa->nItemCount - 1; |
| lpPtr = hdpa->ptrs; |
| while (r >= l) { |
| x = (l + r) / 2; |
| n = (pfnCompare)(pFind, lpPtr[x], lParam); |
| if (n == 0) |
| return x; |
| else if (n < 0) |
| r = x - 1; |
| else /* (n > 0) */ |
| l = x + 1; |
| } |
| if (uOptions & (DPAS_INSERTBEFORE|DPAS_INSERTAFTER)) return l; |
| } |
| else { |
| /* array is not sorted --> use linear search */ |
| LPVOID *lpPtr; |
| INT nIndex; |
| |
| nIndex = (nStart == -1)? 0 : nStart; |
| lpPtr = hdpa->ptrs; |
| for (; nIndex < hdpa->nItemCount; nIndex++) { |
| if ((pfnCompare)(pFind, lpPtr[nIndex], lParam) == 0) |
| return nIndex; |
| } |
| } |
| |
| return -1; |
| } |
| |
| |
| /************************************************************************** |
| * DPA_CreateEx [COMCTL32.340] |
| * |
| * Creates a dynamic pointer array using the specified size and heap. |
| * |
| * PARAMS |
| * nGrow [I] number of items by which the array grows when it is filled |
| * hHeap [I] handle to the heap where the array is stored |
| * |
| * RETURNS |
| * Success: handle (pointer) to the pointer array. |
| * Failure: NULL |
| * |
| * NOTES |
| * The DPA_ functions can be used to create and manipulate arrays of |
| * pointers. |
| */ |
| HDPA WINAPI DPA_CreateEx (INT nGrow, HANDLE hHeap) |
| { |
| HDPA hdpa; |
| |
| TRACE("(%d %p)\n", nGrow, hHeap); |
| |
| if (hHeap) |
| hdpa = HeapAlloc (hHeap, HEAP_ZERO_MEMORY, sizeof(*hdpa)); |
| else |
| hdpa = Alloc (sizeof(*hdpa)); |
| |
| if (hdpa) { |
| hdpa->nGrow = max(8, nGrow); |
| hdpa->hHeap = hHeap ? hHeap : GetProcessHeap(); |
| hdpa->nMaxCount = hdpa->nGrow * 2; |
| hdpa->ptrs = HeapAlloc (hdpa->hHeap, HEAP_ZERO_MEMORY, |
| hdpa->nMaxCount * sizeof(LPVOID)); |
| } |
| |
| TRACE("-- %p\n", hdpa); |
| |
| return hdpa; |
| } |
| |
| |
| /************************************************************************** |
| * DPA_Create [COMCTL32.328] |
| * |
| * Creates a dynamic pointer array. |
| * |
| * PARAMS |
| * nGrow [I] number of items by which the array grows when it is filled |
| * |
| * RETURNS |
| * Success: handle (pointer) to the pointer array. |
| * Failure: NULL |
| * |
| * NOTES |
| * The DPA_ functions can be used to create and manipulate arrays of |
| * pointers. |
| */ |
| HDPA WINAPI DPA_Create (INT nGrow) |
| { |
| return DPA_CreateEx( nGrow, 0 ); |
| } |
| |
| |
| /************************************************************************** |
| * DPA_EnumCallback [COMCTL32.385] |
| * |
| * Enumerates all items in a dynamic pointer array. |
| * |
| * PARAMS |
| * hdpa [I] handle to the dynamic pointer array |
| * enumProc [I] |
| * lParam [I] |
| * |
| * RETURNS |
| * none |
| */ |
| VOID WINAPI DPA_EnumCallback (HDPA hdpa, PFNDPAENUMCALLBACK enumProc, |
| LPVOID lParam) |
| { |
| INT i; |
| |
| TRACE("(%p %p %p)\n", hdpa, enumProc, lParam); |
| |
| if (!hdpa) |
| return; |
| if (hdpa->nItemCount <= 0) |
| return; |
| |
| for (i = 0; i < hdpa->nItemCount; i++) { |
| if ((enumProc)(hdpa->ptrs[i], lParam) == 0) |
| return; |
| } |
| |
| return; |
| } |
| |
| |
| /************************************************************************** |
| * DPA_DestroyCallback [COMCTL32.386] |
| * |
| * Enumerates all items in a dynamic pointer array and destroys it. |
| * |
| * PARAMS |
| * hdpa [I] handle to the dynamic pointer array |
| * enumProc [I] |
| * lParam [I] |
| * |
| * RETURNS |
| * none |
| */ |
| void WINAPI DPA_DestroyCallback (HDPA hdpa, PFNDPAENUMCALLBACK enumProc, |
| LPVOID lParam) |
| { |
| TRACE("(%p %p %p)\n", hdpa, enumProc, lParam); |
| |
| DPA_EnumCallback (hdpa, enumProc, lParam); |
| DPA_Destroy (hdpa); |
| } |
| |
| /************************************************************************** |
| * DPA_GetSize [COMCTL32.@] |
| * |
| * Returns all array allocated memory size |
| * |
| * PARAMS |
| * hdpa [I] handle to the dynamic pointer array |
| * |
| * RETURNS |
| * Size in bytes |
| */ |
| ULONGLONG WINAPI DPA_GetSize(HDPA hdpa) |
| { |
| TRACE("(%p)\n", hdpa); |
| |
| if (!hdpa) return 0; |
| |
| return sizeof(DPA) + hdpa->nMaxCount*sizeof(PVOID); |
| } |
