dlls/shell32/pidl.c

   1 /*
   2  *    pidl Handling
   3  *
   4  *    Copyright 1998    Juergen Schmied
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  * NOTES
  21  *  a pidl == NULL means desktop and is legal
  22  *
  23  */
  24
  25 #include "config.h"
  26 #include "wine/port.h"
  27
  28 #include <ctype.h>
  29 #include <stdarg.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32
  33 #define COBJMACROS
  34 #define NONAMELESSUNION
  35 #define NONAMELESSSTRUCT
  36
  37 #include "windef.h"
  38 #include "winbase.h"
  39 #include "winreg.h"
  40 #include "objbase.h"
  41 #include "shlguid.h"
  42 #include "winerror.h"
  43 #include "winnls.h"
  44 #include "undocshell.h"
  45 #include "shell32_main.h"
  46 #include "shellapi.h"
  47 #include "shlwapi.h"
  48
  49 #include "pidl.h"
  50 #include "wine/debug.h"
  51
  52 WINE_DEFAULT_DEBUG_CHANNEL(pidl);
  53 WINE_DECLARE_DEBUG_CHANNEL(shell);
  54
  55 /* from comctl32.dll */
  56 extern LPVOID WINAPI Alloc(INT);
  57 extern BOOL WINAPI Free(LPVOID);
  58
  59 /*************************************************************************
  60  * ILGetDisplayNameEx        [SHELL32.186]
  61  *
  62  * Retrieves the display name of an ItemIDList
  63  *
  64  * PARAMS
  65  *  psf        [I]   Shell Folder to start with, if NULL the desktop is used
  66  *  pidl       [I]   ItemIDList relativ to the psf to get the display name for
  67  *  path       [O]   Filled in with the display name, assumed to be at least MAX_PATH long
  68  *  type       [I]   Type of display name to retrieve
  69  *                    0 = SHGDN_FORPARSING | SHGDN_FORADDRESSBAR uses always the desktop as root
  70  *                    1 = SHGDN_NORMAL relative to the root folder
  71  *                    2 = SHGDN_INFOLDER relative to the root folder, only the last name
  72  *
  73  * RETURNS
  74  *  True if the display name could be retrieved successfully, False otherwise
  75  */
  76 BOOL WINAPI ILGetDisplayNameExA(LPSHELLFOLDER psf, LPCITEMIDLIST pidl, LPSTR path, DWORD type)
  77 {
  78     BOOL ret = FALSE;
  79     WCHAR wPath[MAX_PATH];
  80
  81     TRACE("%p %p %p %ld\n", psf, pidl, path, type);
  82
  83     if (!pidl || !path)
  84         return FALSE;
  85
  86     ret = ILGetDisplayNameExW(psf, pidl, wPath, type);
  87     WideCharToMultiByte(CP_ACP, 0, wPath, -1, path, MAX_PATH, NULL, NULL);
  88     TRACE("%p %p %s\n", psf, pidl, debugstr_a(path));
  89
  90     return ret;
  91 }
  92
  93 BOOL WINAPI ILGetDisplayNameExW(LPSHELLFOLDER psf, LPCITEMIDLIST pidl, LPWSTR path, DWORD type)
  94 {
  95     LPSHELLFOLDER psfParent, lsf = psf;
  96     HRESULT ret = NO_ERROR;
  97     LPCITEMIDLIST pidllast;
  98     STRRET strret;
  99     DWORD flag;
 100
 101     TRACE("%p %p %p %ld\n", psf, pidl, path, type);
 102
 103     if (!pidl || !path)
 104         return FALSE;
 105
 106     if (!lsf)
 107     {
 108         ret = SHGetDesktopFolder(&lsf);
 109         if (FAILED(ret))
 110             return FALSE;
 111     }
 112
 113     if (type >= 0 && type <= 2)
 114     {
 115         switch (type)
 116         {
 117         case ILGDN_FORPARSING:
 118             flag = SHGDN_FORPARSING | SHGDN_FORADDRESSBAR;
 119             break;
 120         case ILGDN_NORMAL:
 121             flag = SHGDN_NORMAL;
 122             break;
 123         case ILGDN_INFOLDER:
 124             flag = SHGDN_INFOLDER;
 125             break;
 126         default:
 127             FIXME("Unknown type parameter = %lx\n", type);
 128             flag = SHGDN_FORPARSING | SHGDN_FORADDRESSBAR;
 129             break;
 130         }
 131         if (!*(const WORD*)pidl || type == ILGDN_FORPARSING)
 132         {
 133             ret = IShellFolder_GetDisplayNameOf(lsf, pidl, flag, &strret);
 134             if (SUCCEEDED(ret))
 135             {
 136                 ret = StrRetToStrNW(path, MAX_PATH, &strret, pidl);
 137             }
 138         }
 139         else
 140         {
 141             ret = SHBindToParent(pidl, &IID_IShellFolder, (LPVOID*)&psfParent, &pidllast);
 142             if (SUCCEEDED(ret))
 143             {
 144                 ret = IShellFolder_GetDisplayNameOf(psfParent, pidllast, flag, &strret);
 145                 if (SUCCEEDED(ret))
 146                 {
 147                     ret = StrRetToStrNW(path, MAX_PATH, &strret, pidllast);
 148                 }
 149                 IShellFolder_Release(psfParent);
 150             }
 151         }
 152     }
 153
 154     TRACE("%p %p %s\n", psf, pidl, debugstr_w(path));
 155
 156     if (!psf)
 157         IShellFolder_Release(lsf);
 158     return SUCCEEDED(ret);
 159 }
 160
 161 BOOL WINAPI ILGetDisplayNameEx(LPSHELLFOLDER psf, LPCITEMIDLIST pidl, LPVOID path, DWORD type)
 162 {
 163     TRACE_(shell)("%p %p %p %ld\n", psf, pidl, path, type);
 164
 165     if (SHELL_OsIsUnicode())
 166         return ILGetDisplayNameExW(psf, pidl, path, type);
 167     return ILGetDisplayNameExA(psf, pidl, path, type);
 168 }
 169
 170 /*************************************************************************
 171  * ILGetDisplayName            [SHELL32.15]
 172  */
 173 BOOL WINAPI ILGetDisplayName(LPCITEMIDLIST pidl, LPVOID path)
 174 {
 175     TRACE_(shell)("%p %p\n", pidl, path);
 176
 177     if (SHELL_OsIsUnicode())
 178         return ILGetDisplayNameExW(NULL, pidl, path, ILGDN_FORPARSING);
 179     return ILGetDisplayNameExA(NULL, pidl, path, ILGDN_FORPARSING);
 180 }
 181
 182 /*************************************************************************
 183  * ILFindLastID [SHELL32.16]
 184  *
 185  * NOTES
 186  *   observed: pidl=Desktop return=pidl
 187  */
 188 LPITEMIDLIST WINAPI ILFindLastID(LPCITEMIDLIST pidl)
 189 {
 190     LPCITEMIDLIST   pidlLast = pidl;
 191
 192     TRACE("(pidl=%p)\n",pidl);
 193
 194     if (!pidl)
 195         return NULL;
 196
 197     while (pidl->mkid.cb)
 198     {
 199         pidlLast = pidl;
 200         pidl = ILGetNext(pidl);
 201     }
 202     return (LPITEMIDLIST)pidlLast;
 203 }
 204
 205 /*************************************************************************
 206  * ILRemoveLastID [SHELL32.17]
 207  *
 208  * NOTES
 209  *   when pidl=Desktop return=FALSE
 210  */
 211 BOOL WINAPI ILRemoveLastID(LPITEMIDLIST pidl)
 212 {
 213     TRACE_(shell)("pidl=%p\n",pidl);
 214
 215     if (!pidl || !pidl->mkid.cb)
 216         return 0;
 217     ILFindLastID(pidl)->mkid.cb = 0;
 218     return 1;
 219 }
 220
 221 /*************************************************************************
 222  * ILClone [SHELL32.18]
 223  *
 224  * NOTES
 225  *    duplicate an idlist
 226  */
 227 LPITEMIDLIST WINAPI ILClone (LPCITEMIDLIST pidl)
 228 {
 229     DWORD    len;
 230     LPITEMIDLIST  newpidl;
 231
 232     if (!pidl)
 233         return NULL;
 234
 235     len = ILGetSize(pidl);
 236     newpidl = (LPITEMIDLIST)SHAlloc(len);
 237     if (newpidl)
 238         memcpy(newpidl,pidl,len);
 239
 240     TRACE("pidl=%p newpidl=%p\n",pidl, newpidl);
 241     pdump(pidl);
 242
 243     return newpidl;
 244 }
 245
 246 /*************************************************************************
 247  * ILCloneFirst [SHELL32.19]
 248  *
 249  * NOTES
 250  *  duplicates the first idlist of a complex pidl
 251  */
 252 LPITEMIDLIST WINAPI ILCloneFirst(LPCITEMIDLIST pidl)
 253 {
 254     DWORD len;
 255     LPITEMIDLIST pidlNew = NULL;
 256
 257     TRACE("pidl=%p \n",pidl);
 258     pdump(pidl);
 259
 260     if (pidl)
 261     {
 262         len = pidl->mkid.cb;
 263         pidlNew = (LPITEMIDLIST) SHAlloc (len+2);
 264         if (pidlNew)
 265         {
 266             memcpy(pidlNew,pidl,len+2);        /* 2 -> mind a desktop pidl */
 267
 268             if (len)
 269                 ILGetNext(pidlNew)->mkid.cb = 0x00;
 270         }
 271     }
 272     TRACE("-- newpidl=%p\n",pidlNew);
 273
 274     return pidlNew;
 275 }
 276
 277 /*************************************************************************
 278  * ILLoadFromStream (SHELL32.26)
 279  *
 280  * NOTES
 281  *   the first two bytes are the len, the pidl is following then
 282  */
 283 HRESULT WINAPI ILLoadFromStream (IStream * pStream, LPITEMIDLIST * ppPidl)
 284 {
 285     WORD        wLen = 0;
 286     DWORD       dwBytesRead;
 287     HRESULT     ret = E_FAIL;
 288
 289
 290     TRACE_(shell)("%p %p\n", pStream ,  ppPidl);
 291
 292     if (*ppPidl)
 293     {
 294         SHFree(*ppPidl);
 295         *ppPidl = NULL;
 296     }
 297
 298     IStream_AddRef (pStream);
 299
 300     if (SUCCEEDED(IStream_Read(pStream, (LPVOID)&wLen, 2, &dwBytesRead)))
 301     {
 302         TRACE("PIDL length is %d\n", wLen);
 303         if (wLen != 0)
 304         {
 305             *ppPidl = SHAlloc (wLen);
 306             if (SUCCEEDED(IStream_Read(pStream, *ppPidl , wLen, &dwBytesRead)))
 307             {
 308                 TRACE("Stream read OK\n");
 309                 ret = S_OK;
 310             }
 311             else
 312             {
 313                 WARN("reading pidl failed\n");
 314                 SHFree(*ppPidl);
 315                 *ppPidl = NULL;
 316             }
 317         }
 318         else
 319         {
 320             *ppPidl = NULL;
 321             ret = S_OK;
 322         }
 323     }
 324
 325     /* we are not yet fully compatible */
 326     if (*ppPidl && !pcheck(*ppPidl))
 327     {
 328         WARN("Check failed\n");
 329         SHFree(*ppPidl);
 330         *ppPidl = NULL;
 331     }
 332
 333     IStream_Release (pStream);
 334     TRACE("done\n");
 335     return ret;
 336 }
 337
 338 /*************************************************************************
 339  * ILSaveToStream (SHELL32.27)
 340  *
 341  * NOTES
 342  *   the first two bytes are the len, the pidl is following then
 343  */
 344 HRESULT WINAPI ILSaveToStream (IStream * pStream, LPCITEMIDLIST pPidl)
 345 {
 346     LPCITEMIDLIST    pidl;
 347     WORD        wLen = 0;
 348     HRESULT        ret = E_FAIL;
 349
 350     TRACE_(shell)("%p %p\n", pStream, pPidl);
 351
 352     IStream_AddRef (pStream);
 353
 354     pidl = pPidl;
 355     while (pidl->mkid.cb)
 356     {
 357         wLen += sizeof(WORD) + pidl->mkid.cb;
 358         pidl = ILGetNext(pidl);
 359     }
 360
 361     if (SUCCEEDED(IStream_Write(pStream, (LPVOID)&wLen, 2, NULL)))
 362     {
 363         if (SUCCEEDED(IStream_Write(pStream, pPidl, wLen, NULL)))
 364             ret = S_OK;
 365     }
 366     IStream_Release (pStream);
 367
 368     return ret;
 369 }
 370
 371 /*************************************************************************
 372  * SHILCreateFromPath        [SHELL32.28]
 373  *
 374  * Create an ItemIDList from a path
 375  *
 376  * PARAMS
 377  *  path       [I]
 378  *  ppidl      [O]
 379  *  attributes [I/O] requested attributes on call and actual attributes when
 380  *                   the function returns
 381  *
 382  * RETURNS
 383  *  NO_ERROR if successful, or an OLE errer code otherwise
 384  *
 385  * NOTES
 386  *  Wrapper for IShellFolder_ParseDisplayName().
 387  */
 388 HRESULT WINAPI SHILCreateFromPathA(LPCSTR path, LPITEMIDLIST * ppidl, DWORD * attributes)
 389 {
 390     WCHAR lpszDisplayName[MAX_PATH];
 391
 392     TRACE_(shell)("%s %p 0x%08lx\n", path, ppidl, attributes ? *attributes : 0);
 393
 394     if (!MultiByteToWideChar(CP_ACP, 0, path, -1, lpszDisplayName, MAX_PATH))
 395         lpszDisplayName[MAX_PATH-1] = 0;
 396
 397     return SHILCreateFromPathW(lpszDisplayName, ppidl, attributes);
 398 }
 399
 400 HRESULT WINAPI SHILCreateFromPathW(LPCWSTR path, LPITEMIDLIST * ppidl, DWORD * attributes)
 401 {
 402     LPSHELLFOLDER sf;
 403     DWORD pchEaten;
 404     HRESULT ret = E_FAIL;
 405
 406     TRACE_(shell)("%s %p 0x%08lx\n", debugstr_w(path), ppidl, attributes ? *attributes : 0);
 407
 408     if (SUCCEEDED (SHGetDesktopFolder(&sf)))
 409     {
 410         ret = IShellFolder_ParseDisplayName(sf, 0, NULL, (LPWSTR)path, &pchEaten, ppidl, attributes);
 411         IShellFolder_Release(sf);
 412     }
 413     return ret;
 414 }
 415
 416 HRESULT WINAPI SHILCreateFromPathAW (LPCVOID path, LPITEMIDLIST * ppidl, DWORD * attributes)
 417 {
 418     if ( SHELL_OsIsUnicode())
 419         return SHILCreateFromPathW (path, ppidl, attributes);
 420     return SHILCreateFromPathA (path, ppidl, attributes);
 421 }
 422
 423 /*************************************************************************
 424  * SHCloneSpecialIDList      [SHELL32.89]
 425  *
 426  * Create an ItemIDList to one of the special folders.
 427
 428  * PARAMS
 429  *  hwndOwner    [in]
 430  *  nFolder      [in]    CSIDL_xxxxx
 431  *  fCreate      [in]    Create folder if it does not exist
 432  *
 433  * RETURNS
 434  *  Success: The newly created pidl
 435  *  Failure: NULL, if inputs are invalid.
 436  *
 437  * NOTES
 438  *  exported by ordinal.
 439  *  Caller is responsible for deallocating the returned ItemIDList with the
 440  *  shells IMalloc interface, aka ILFree.
 441  */
 442 LPITEMIDLIST WINAPI SHCloneSpecialIDList(HWND hwndOwner, DWORD nFolder, BOOL fCreate)
 443 {
 444     LPITEMIDLIST ppidl;
 445     TRACE_(shell)("(hwnd=%p,csidl=0x%lx,%s).\n", hwndOwner, nFolder, fCreate ? "T" : "F");
 446
 447     if (fCreate)
 448         nFolder |= CSIDL_FLAG_CREATE;
 449
 450     SHGetSpecialFolderLocation(hwndOwner, nFolder, &ppidl);
 451     return ppidl;
 452 }
 453
 454 /*************************************************************************
 455  * ILGlobalClone             [SHELL32.20]
 456  *
 457  * Clones an ItemIDList using Alloc.
 458  *
 459  * PARAMS
 460  *  pidl       [I]   ItemIDList to clone
 461  *
 462  * RETURNS
 463  *  Newly allocated ItemIDList.
 464  *
 465  * NOTES
 466  *  exported by ordinal.
 467  */
 468 LPITEMIDLIST WINAPI ILGlobalClone(LPCITEMIDLIST pidl)
 469 {
 470     DWORD    len;
 471     LPITEMIDLIST  newpidl;
 472
 473     if (!pidl)
 474         return NULL;
 475
 476     len = ILGetSize(pidl);
 477     newpidl = (LPITEMIDLIST)Alloc(len);
 478     if (newpidl)
 479         memcpy(newpidl,pidl,len);
 480
 481     TRACE("pidl=%p newpidl=%p\n",pidl, newpidl);
 482     pdump(pidl);
 483
 484     return newpidl;
 485 }
 486
 487 /*************************************************************************
 488  * ILIsEqual [SHELL32.21]
 489  *
 490  */
 491 BOOL WINAPI ILIsEqual(LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 492 {
 493     char    szData1[MAX_PATH];
 494     char    szData2[MAX_PATH];
 495
 496     LPCITEMIDLIST pidltemp1 = pidl1;
 497     LPCITEMIDLIST pidltemp2 = pidl2;
 498
 499     TRACE("pidl1=%p pidl2=%p\n",pidl1, pidl2);
 500
 501     /*
 502      * Explorer reads from registry directly (StreamMRU),
 503      * so we can only check here
 504      */
 505     if (!pcheck(pidl1) || !pcheck (pidl2))
 506         return FALSE;
 507
 508     pdump (pidl1);
 509     pdump (pidl2);
 510
 511     if (!pidl1 || !pidl2)
 512         return FALSE;
 513
 514     while (pidltemp1->mkid.cb && pidltemp2->mkid.cb)
 515     {
 516         _ILSimpleGetText(pidltemp1, szData1, MAX_PATH);
 517         _ILSimpleGetText(pidltemp2, szData2, MAX_PATH);
 518
 519         if (strcasecmp( szData1, szData2 ))
 520             return FALSE;
 521
 522         pidltemp1 = ILGetNext(pidltemp1);
 523         pidltemp2 = ILGetNext(pidltemp2);
 524     }
 525
 526     if (!pidltemp1->mkid.cb && !pidltemp2->mkid.cb)
 527         return TRUE;
 528
 529     return FALSE;
 530 }
 531
 532 /*************************************************************************
 533  * ILIsParent                [SHELL32.23]
 534  *
 535  * Verifies that pidlParent is indeed the (immediate) parent of pidlChild.
 536  *
 537  * PARAMS
 538  *  pidlParent [I]
 539  *  pidlChild  [I]
 540  *  bImmediate [I]   only return true if the parent is the direct parent
 541  *                   of the child
 542  *
 543  * RETURNS
 544  *  True if the parent ItemIDlist is a complete part of the child ItemIdList,
 545  *  False otherwise.
 546  *
 547  * NOTES
 548  *  parent = a/b, child = a/b/c -> true, c is in folder a/b
 549  *  child = a/b/c/d -> false if bImmediate is true, d is not in folder a/b
 550  *  child = a/b/c/d -> true if bImmediate is false, d is in a subfolder of a/b
 551  */
 552 BOOL WINAPI ILIsParent(LPCITEMIDLIST pidlParent, LPCITEMIDLIST pidlChild, BOOL bImmediate)
 553 {
 554     char    szData1[MAX_PATH];
 555     char    szData2[MAX_PATH];
 556     LPCITEMIDLIST pParent = pidlParent;
 557     LPCITEMIDLIST pChild = pidlChild;
 558
 559     TRACE("%p %p %x\n", pidlParent, pidlChild, bImmediate);
 560
 561     if (!pParent || !pChild)
 562         return FALSE;
 563
 564     while (pParent->mkid.cb && pChild->mkid.cb)
 565     {
 566         _ILSimpleGetText(pParent, szData1, MAX_PATH);
 567         _ILSimpleGetText(pChild, szData2, MAX_PATH);
 568
 569         if (strcasecmp( szData1, szData2 ))
 570             return FALSE;
 571
 572         pParent = ILGetNext(pParent);
 573         pChild = ILGetNext(pChild);
 574     }
 575
 576     /* child shorter or has equal length to parent */
 577     if (pParent->mkid.cb || !pChild->mkid.cb)
 578         return FALSE;
 579
 580     /* not immediate descent */
 581     if ( ILGetNext(pChild)->mkid.cb && bImmediate)
 582         return FALSE;
 583
 584     return TRUE;
 585 }
 586
 587 /*************************************************************************
 588  * ILFindChild               [SHELL32.24]
 589  *
 590  *  Compares elements from pidl1 and pidl2.
 591  *
 592  * PARAMS
 593  *  pidl1      [I]
 594  *  pidl2      [I]
 595  *
 596  * RETURNS
 597  *  pidl1 is desktop      pidl2
 598  *  pidl1 shorter pidl2   pointer to first different element of pidl2
 599  *                        if there was at least one equal element
 600  *  pidl2 shorter pidl1   0
 601  *  pidl2 equal pidl1     pointer to last 0x00-element of pidl2
 602  *
 603  * NOTES
 604  *  exported by ordinal.
 605  */
 606 LPITEMIDLIST WINAPI ILFindChild(LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 607 {
 608     char    szData1[MAX_PATH];
 609     char    szData2[MAX_PATH];
 610
 611     LPCITEMIDLIST pidltemp1 = pidl1;
 612     LPCITEMIDLIST pidltemp2 = pidl2;
 613     LPCITEMIDLIST ret=NULL;
 614
 615     TRACE("pidl1=%p pidl2=%p\n",pidl1, pidl2);
 616
 617     /* explorer reads from registry directly (StreamMRU),
 618        so we can only check here */
 619     if ((!pcheck (pidl1)) || (!pcheck (pidl2)))
 620         return FALSE;
 621
 622     pdump (pidl1);
 623     pdump (pidl2);
 624
 625     if (_ILIsDesktop(pidl1))
 626     {
 627         ret = pidl2;
 628     }
 629     else
 630     {
 631         while (pidltemp1->mkid.cb && pidltemp2->mkid.cb)
 632         {
 633             _ILSimpleGetText(pidltemp1, szData1, MAX_PATH);
 634             _ILSimpleGetText(pidltemp2, szData2, MAX_PATH);
 635
 636             if (strcasecmp(szData1,szData2))
 637                 break;
 638
 639             pidltemp1 = ILGetNext(pidltemp1);
 640             pidltemp2 = ILGetNext(pidltemp2);
 641             ret = pidltemp2;
 642         }
 643
 644         if (pidltemp1->mkid.cb)
 645             ret = NULL; /* elements of pidl1 left*/
 646     }
 647     TRACE_(shell)("--- %p\n", ret);
 648     return (LPITEMIDLIST)ret; /* pidl 1 is shorter */
 649 }
 650
 651 /*************************************************************************
 652  * ILCombine                 [SHELL32.25]
 653  *
 654  * Concatenates two complex ItemIDLists.
 655  *
 656  * PARAMS
 657  *  pidl1      [I]   first complex ItemIDLists
 658  *  pidl2      [I]   complex ItemIDLists to append
 659  *
 660  * RETURNS
 661  *  if both pidl's == NULL      NULL
 662  *  if pidl1 == NULL            cloned pidl2
 663  *  if pidl2 == NULL            cloned pidl1
 664  *  otherwise new pidl with pidl2 appended to pidl1
 665  *
 666  * NOTES
 667  *  exported by ordinal.
 668  *  Does not destroy the passed in ItemIDLists!
 669  */
 670 LPITEMIDLIST WINAPI ILCombine(LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 671 {
 672     DWORD    len1,len2;
 673     LPITEMIDLIST  pidlNew;
 674
 675     TRACE("pidl=%p pidl=%p\n",pidl1,pidl2);
 676
 677     if (!pidl1 && !pidl2) return NULL;
 678
 679     pdump (pidl1);
 680     pdump (pidl2);
 681
 682     if (!pidl1)
 683     {
 684         pidlNew = ILClone(pidl2);
 685         return pidlNew;
 686     }
 687
 688     if (!pidl2)
 689     {
 690         pidlNew = ILClone(pidl1);
 691         return pidlNew;
 692     }
 693
 694     len1  = ILGetSize(pidl1)-2;
 695     len2  = ILGetSize(pidl2);
 696     pidlNew  = SHAlloc(len1+len2);
 697
 698     if (pidlNew)
 699     {
 700         memcpy(pidlNew,pidl1,len1);
 701         memcpy(((BYTE *)pidlNew)+len1,pidl2,len2);
 702     }
 703
 704     /*  TRACE(pidl,"--new pidl=%p\n",pidlNew);*/
 705     return pidlNew;
 706 }
 707
 708 /*************************************************************************
 709  *  SHGetRealIDL [SHELL32.98]
 710  *
 711  * NOTES
 712  */
 713 HRESULT WINAPI SHGetRealIDL(LPSHELLFOLDER lpsf, LPCITEMIDLIST pidlSimple, LPITEMIDLIST *pidlReal)
 714 {
 715     IDataObject* pDataObj;
 716     HRESULT hr;
 717
 718     hr = IShellFolder_GetUIObjectOf(lpsf, 0, 1, &pidlSimple,
 719                              &IID_IDataObject, 0, (LPVOID*)&pDataObj);
 720     if (SUCCEEDED(hr))
 721     {
 722         STGMEDIUM medium;
 723         FORMATETC fmt;
 724
 725         fmt.cfFormat = RegisterClipboardFormatA(CFSTR_SHELLIDLIST);
 726         fmt.ptd = NULL;
 727         fmt.dwAspect = DVASPECT_CONTENT;
 728         fmt.lindex = -1;
 729         fmt.tymed = TYMED_HGLOBAL;
 730
 731         hr = IDataObject_GetData(pDataObj, &fmt, &medium);
 732
 733         IDataObject_Release(pDataObj);
 734
 735         if (SUCCEEDED(hr))
 736         {
 737             /*assert(pida->cidl==1);*/
 738             LPIDA pida = (LPIDA)GlobalLock(medium.u.hGlobal);
 739
 740             LPCITEMIDLIST pidl_folder = (LPCITEMIDLIST) ((LPBYTE)pida+pida->aoffset[0]);
 741             LPCITEMIDLIST pidl_child = (LPCITEMIDLIST) ((LPBYTE)pida+pida->aoffset[1]);
 742
 743             *pidlReal = ILCombine(pidl_folder, pidl_child);
 744
 745             if (!*pidlReal)
 746                 hr = E_OUTOFMEMORY;
 747
 748             GlobalUnlock(medium.u.hGlobal);
 749             GlobalFree(medium.u.hGlobal);
 750         }
 751     }
 752
 753     return hr;
 754 }
 755
 756 /*************************************************************************
 757  *  SHLogILFromFSIL [SHELL32.95]
 758  *
 759  * NOTES
 760  *  pild = CSIDL_DESKTOP    ret = 0
 761  *  pild = CSIDL_DRIVES     ret = 0
 762  */
 763 LPITEMIDLIST WINAPI SHLogILFromFSIL(LPITEMIDLIST pidl)
 764 {
 765     FIXME("(pidl=%p)\n",pidl);
 766
 767     pdump(pidl);
 768
 769     return 0;
 770 }
 771
 772 /*************************************************************************
 773  * ILGetSize                 [SHELL32.152]
 774  *
 775  * Gets the byte size of an ItemIDList including zero terminator
 776  *
 777  * PARAMS
 778  *  pidl       [I]   ItemIDList
 779  *
 780  * RETURNS
 781  *  size of pidl in bytes
 782  *
 783  * NOTES
 784  *  exported by ordinal
 785  */
 786 UINT WINAPI ILGetSize(LPCITEMIDLIST pidl)
 787 {
 788     LPCSHITEMID si = &(pidl->mkid);
 789     UINT len=0;
 790
 791     if (pidl)
 792     {
 793         while (si->cb)
 794         {
 795             len += si->cb;
 796             si  = (LPCSHITEMID)(((const BYTE*)si)+si->cb);
 797         }
 798         len += 2;
 799     }
 800     TRACE("pidl=%p size=%u\n",pidl, len);
 801     return len;
 802 }
 803
 804 /*************************************************************************
 805  * ILGetNext                 [SHELL32.153]
 806  *
 807  * Gets the next ItemID of an ItemIDList
 808  *
 809  * PARAMS
 810  *  pidl       [I]   ItemIDList
 811  *
 812  * RETURNS
 813  *  null -> null
 814  *  desktop -> null
 815  *  simple pidl -> pointer to 0x0000 element
 816  *
 817  * NOTES
 818  *  exported by ordinal.
 819  */
 820 LPITEMIDLIST WINAPI ILGetNext(LPCITEMIDLIST pidl)
 821 {
 822     WORD len;
 823
 824     TRACE("%p\n", pidl);
 825
 826     if (pidl)
 827     {
 828         len =  pidl->mkid.cb;
 829         if (len)
 830         {
 831             pidl = (LPCITEMIDLIST) (((const BYTE*)pidl)+len);
 832             TRACE("-- %p\n", pidl);
 833             return (LPITEMIDLIST)pidl;
 834         }
 835     }
 836     return NULL;
 837 }
 838
 839 /*************************************************************************
 840  * ILAppend                  [SHELL32.154]
 841  *
 842  * Adds the single ItemID item to the ItemIDList indicated by pidl.
 843  * If bEnd is FALSE, inserts the item in the front of the list,
 844  * otherwise it adds the item to the end. (???)
 845  *
 846  * PARAMS
 847  *  pidl       [I]   ItemIDList to extend
 848  *  item       [I]   ItemID to prepend/append
 849  *  bEnd       [I]   Indicates if the item should be appended
 850  *
 851  * NOTES
 852  *  Destroys the passed in idlist! (???)
 853  */
 854 LPITEMIDLIST WINAPI ILAppend(LPITEMIDLIST pidl, LPCITEMIDLIST item, BOOL bEnd)
 855 {
 856     LPITEMIDLIST idlRet;
 857
 858     WARN("(pidl=%p,pidl=%p,%08u)semi-stub\n",pidl,item,bEnd);
 859
 860     pdump (pidl);
 861     pdump (item);
 862
 863     if (_ILIsDesktop(pidl))
 864     {
 865         idlRet = ILClone(item);
 866         if (pidl)
 867             SHFree (pidl);
 868         return idlRet;
 869     }
 870
 871     if (bEnd)
 872         idlRet = ILCombine(pidl, item);
 873     else
 874         idlRet = ILCombine(item, pidl);
 875
 876     SHFree(pidl);
 877     return idlRet;
 878 }
 879
 880 /*************************************************************************
 881  * ILFree                    [SHELL32.155]
 882  *
 883  * Frees memory (if not NULL) allocated by SHMalloc allocator
 884  *
 885  * PARAMS
 886  *  pidl         [I]
 887  *
 888  * NOTES
 889  *  exported by ordinal
 890  */
 891 void WINAPI ILFree(LPITEMIDLIST pidl)
 892 {
 893     TRACE("(pidl=%p)\n",pidl);
 894     if (pidl)
 895         SHFree(pidl);
 896 }
 897
 898 /*************************************************************************
 899  * ILGlobalFree              [SHELL32.156]
 900  *
 901  * Frees memory (if not NULL) allocated by Alloc allocator
 902  *
 903  * PARAMS
 904  *  pidl         [I]
 905  *
 906  * NOTES
 907  *  exported by ordinal.
 908  */
 909 void WINAPI ILGlobalFree( LPITEMIDLIST pidl)
 910 {
 911     TRACE("%p\n", pidl);
 912
 913     if (pidl)
 914         Free(pidl);
 915 }
 916
 917 /*************************************************************************
 918  * ILCreateFromPathA         [SHELL32.189]
 919  *
 920  * Creates a complex ItemIDList from a path and returns it.
 921  *
 922  * PARAMS
 923  *  path         [I]
 924  *
 925  * RETURNS
 926  *  the newly created complex ItemIDList or NULL if failed
 927  *
 928  * NOTES
 929  *  exported by ordinal.
 930  */
 931 LPITEMIDLIST WINAPI ILCreateFromPathA (LPCSTR path)
 932 {
 933     LPITEMIDLIST pidlnew = NULL;
 934
 935     TRACE_(shell)("%s\n", debugstr_a(path));
 936
 937     if (SUCCEEDED(SHILCreateFromPathA(path, &pidlnew, NULL)))
 938         return pidlnew;
 939     return NULL;
 940 }
 941
 942 /*************************************************************************
 943  * ILCreateFromPathW         [SHELL32.190]
 944  */
 945 LPITEMIDLIST WINAPI ILCreateFromPathW (LPCWSTR path)
 946 {
 947     LPITEMIDLIST pidlnew = NULL;
 948
 949     TRACE_(shell)("%s\n", debugstr_w(path));
 950
 951     if (SUCCEEDED(SHILCreateFromPathW(path, &pidlnew, NULL)))
 952         return pidlnew;
 953     return NULL;
 954 }
 955
 956 /*************************************************************************
 957  * ILCreateFromPath          [SHELL32.157]
 958  */
 959 LPITEMIDLIST WINAPI ILCreateFromPathAW (LPCVOID path)
 960 {
 961     if ( SHELL_OsIsUnicode())
 962         return ILCreateFromPathW (path);
 963     return ILCreateFromPathA (path);
 964 }
 965
 966 /*************************************************************************
 967  * _ILParsePathW             [internal]
 968  *
 969  * Creates an ItemIDList from a path and returns it.
 970  *
 971  * PARAMS
 972  *  path         [I]   path to parse and convert into an ItemIDList
 973  *  lpFindFile   [I]   pointer to buffer to initialize the FileSystem
 974  *                     Bind Data object with
 975  *  bBindCtx     [I]   indicates to create a BindContext and assign a
 976  *                     FileSystem Bind Data object
 977  *  ppidl        [O]   the newly create ItemIDList
 978  *  prgfInOut    [I/O] requested attributes on input and actual
 979  *                     attributes on return
 980  *
 981  * RETURNS
 982  *  NO_ERROR on success or an OLE error code
 983  *
 984  * NOTES
 985  *  If either lpFindFile is non-NULL or bBindCtx is TRUE, this function
 986  *  creates a BindContext object and assigns a FileSystem Bind Data object
 987  *  to it, passing the BindContext to IShellFolder_ParseDisplayName. Each
 988  *  IShellFolder uses that FileSystem Bind Data object of the BindContext
 989  *  to pass data about the current path element to the next object. This
 990  *  is used to avoid having to verify the current path element on disk, so
 991  *  that creating an ItemIDList from a nonexistent path still can work.
 992  */
 993 static HRESULT WINAPI _ILParsePathW(LPCWSTR path, LPWIN32_FIND_DATAW lpFindFile,
 994                              BOOL bBindCtx, LPITEMIDLIST *ppidl, LPDWORD prgfInOut)
 995 {
 996     LPSHELLFOLDER pSF = NULL;
 997     LPBC pBC = NULL;
 998     HRESULT ret;
 999
1000     TRACE("%s %p %d (%p)->%p (%p)->0x%lx\n", debugstr_w(path), lpFindFile, bBindCtx,
1001                                              ppidl, ppidl ? *ppidl : NULL,
1002                                              prgfInOut, prgfInOut ? *prgfInOut : 0);
1003
1004     ret = SHGetDesktopFolder(&pSF);
1005     if (FAILED(ret))
1006         return ret;
1007
1008     if (lpFindFile || bBindCtx)
1009         ret = IFileSystemBindData_Constructor(lpFindFile, &pBC);
1010
1011     if (SUCCEEDED(ret))
1012     {
1013         ret = IShellFolder_ParseDisplayName(pSF, 0, pBC, (LPOLESTR)path, NULL, ppidl, prgfInOut);
1014     }
1015
1016     if (pBC)
1017     {
1018         IBindCtx_Release(pBC);
1019         pBC = NULL;
1020     }
1021
1022     IShellFolder_Release(pSF);
1023
1024     if (!SUCCEEDED(ret) && ppidl)
1025         *ppidl = NULL;
1026
1027     TRACE("%s %p 0x%lx\n", debugstr_w(path), ppidl ? *ppidl : NULL, prgfInOut ? *prgfInOut : 0);
1028
1029     return ret;
1030 }
1031
1032 /*************************************************************************
1033  * SHSimpleIDListFromPath    [SHELL32.162]
1034  *
1035  * Creates a simple ItemIDList from a path and returns it. This function
1036  * does not fail on nonexistent paths.
1037  *
1038  * PARAMS
1039  *  path         [I]   path to parse and convert into an ItemIDList
1040  *
1041  * RETURNS
1042  *  the newly created simple ItemIDList
1043  *
1044  * NOTES
1045  *  Simple in the name does not mean a relative ItemIDList but rather a
1046  *  fully qualified list, where only the file name is filled in and the
1047  *  directory flag for those ItemID elements this is known about, eg.
1048  *  it is not the last element in the ItemIDList or the actual directory
1049  *  exists on disk.
1050  *  exported by ordinal.
1051  */
1052 LPITEMIDLIST WINAPI SHSimpleIDListFromPathA(LPCSTR lpszPath)
1053 {
1054     LPITEMIDLIST pidl = NULL;
1055     LPWSTR wPath = NULL;
1056     int len;
1057
1058     TRACE("%s\n", debugstr_a(lpszPath));
1059
1060     if (lpszPath)
1061     {
1062         len = MultiByteToWideChar(CP_ACP, 0, lpszPath, -1, NULL, 0);
1063         wPath = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
1064         MultiByteToWideChar(CP_ACP, 0, lpszPath, -1, wPath, len);
1065     }
1066
1067     _ILParsePathW(wPath, NULL, TRUE, &pidl, NULL);
1068
1069     HeapFree(GetProcessHeap(), 0, wPath);
1070     TRACE("%s %p\n", debugstr_a(lpszPath), pidl);
1071     return pidl;
1072 }
1073
1074 LPITEMIDLIST WINAPI SHSimpleIDListFromPathW(LPCWSTR lpszPath)
1075 {
1076     LPITEMIDLIST pidl = NULL;
1077
1078     TRACE("%s\n", debugstr_w(lpszPath));
1079
1080     _ILParsePathW(lpszPath, NULL, TRUE, &pidl, NULL);
1081     TRACE("%s %p\n", debugstr_w(lpszPath), pidl);
1082     return pidl;
1083 }
1084
1085 LPITEMIDLIST WINAPI SHSimpleIDListFromPathAW(LPCVOID lpszPath)
1086 {
1087     if ( SHELL_OsIsUnicode())
1088         return SHSimpleIDListFromPathW (lpszPath);
1089     return SHSimpleIDListFromPathA (lpszPath);
1090 }
1091
1092 /*************************************************************************
1093  * SHGetDataFromIDListA [SHELL32.247]
1094  *
1095  * NOTES
1096  *  the pidl can be a simple one. since we can't get the path out of the pidl
1097  *  we have to take all data from the pidl
1098  */
1099 HRESULT WINAPI SHGetDataFromIDListA(LPSHELLFOLDER psf, LPCITEMIDLIST pidl,
1100                                     int nFormat, LPVOID dest, int len)
1101 {
1102     LPSTR filename, shortname;
1103     WIN32_FIND_DATAA * pfd;
1104
1105     TRACE_(shell)("sf=%p pidl=%p 0x%04x %p 0x%04x stub\n",psf,pidl,nFormat,dest,len);
1106
1107     pdump(pidl);
1108     if (!psf || !dest)
1109         return E_INVALIDARG;
1110
1111     switch (nFormat)
1112     {
1113     case SHGDFIL_FINDDATA:
1114         pfd = dest;
1115
1116         if (_ILIsDrive(pidl) || _ILIsSpecialFolder(pidl))
1117             return E_INVALIDARG;
1118
1119         if (len < sizeof(WIN32_FIND_DATAA))
1120             return E_INVALIDARG;
1121
1122         ZeroMemory(pfd, sizeof (WIN32_FIND_DATAA));
1123         _ILGetFileDateTime( pidl, &(pfd->ftLastWriteTime));
1124         pfd->dwFileAttributes = _ILGetFileAttributes(pidl, NULL, 0);
1125         pfd->nFileSizeLow = _ILGetFileSize ( pidl, NULL, 0);
1126
1127         filename = _ILGetTextPointer(pidl);
1128         shortname = _ILGetSTextPointer(pidl);
1129
1130         if (filename)
1131             lstrcpynA(pfd->cFileName, filename, MAX_PATH);
1132         else
1133             pfd->cFileName[0] = '\0';
1134
1135         if (shortname)
1136             lstrcpynA(pfd->cAlternateFileName, shortname, MAX_PATH);
1137         else
1138             pfd->cAlternateFileName[0] = '\0';
1139         return NOERROR;
1140
1141     case SHGDFIL_NETRESOURCE:
1142     case SHGDFIL_DESCRIPTIONID:
1143         FIXME_(shell)("SHGDFIL %i stub\n", nFormat);
1144         break;
1145
1146     default:
1147         ERR_(shell)("Unknown SHGDFIL %i, please report\n", nFormat);
1148     }
1149
1150     return E_INVALIDARG;
1151 }
1152
1153 /*************************************************************************
1154  * SHGetDataFromIDListW [SHELL32.248]
1155  *
1156  */
1157 HRESULT WINAPI SHGetDataFromIDListW(LPSHELLFOLDER psf, LPCITEMIDLIST pidl,
1158                                     int nFormat, LPVOID dest, int len)
1159 {
1160     LPSTR filename, shortname;
1161     WIN32_FIND_DATAW * pfd = dest;
1162
1163     TRACE_(shell)("sf=%p pidl=%p 0x%04x %p 0x%04x stub\n",psf,pidl,nFormat,dest,len);
1164
1165     pdump(pidl);
1166
1167     if (!psf || !dest)
1168         return E_INVALIDARG;
1169
1170     switch (nFormat)
1171     {
1172     case SHGDFIL_FINDDATA:
1173         pfd = dest;
1174
1175         if (_ILIsDrive(pidl))
1176             return E_INVALIDARG;
1177
1178         if (len < sizeof(WIN32_FIND_DATAW))
1179             return E_INVALIDARG;
1180
1181         ZeroMemory(pfd, sizeof (WIN32_FIND_DATAA));
1182         _ILGetFileDateTime( pidl, &(pfd->ftLastWriteTime));
1183         pfd->dwFileAttributes = _ILGetFileAttributes(pidl, NULL, 0);
1184         pfd->nFileSizeLow = _ILGetFileSize ( pidl, NULL, 0);
1185
1186         filename = _ILGetTextPointer(pidl);
1187         shortname = _ILGetSTextPointer(pidl);
1188
1189         if (!filename)
1190             pfd->cFileName[0] = '\0';
1191         else if (!MultiByteToWideChar(CP_ACP, 0, filename, -1, pfd->cFileName, MAX_PATH))
1192             pfd->cFileName[MAX_PATH-1] = 0;
1193
1194         if (!shortname)
1195             pfd->cAlternateFileName[0] = '\0';
1196         else if (!MultiByteToWideChar(CP_ACP, 0, shortname, -1, pfd->cAlternateFileName, 14))
1197             pfd->cAlternateFileName[13] = 0;
1198         return NOERROR;
1199
1200     case SHGDFIL_NETRESOURCE:
1201     case SHGDFIL_DESCRIPTIONID:
1202         FIXME_(shell)("SHGDFIL %i stub\n", nFormat);
1203         break;
1204
1205     default:
1206         ERR_(shell)("Unknown SHGDFIL %i, please report\n", nFormat);
1207     }
1208
1209     return E_INVALIDARG;
1210 }
1211
1212 /*************************************************************************
1213  * SHGetPathFromIDListA        [SHELL32.@][NT 4.0: SHELL32.220]
1214  *
1215  * PARAMETERS
1216  *  pidl,   [IN] pidl
1217  *  pszPath [OUT] path
1218  *
1219  * RETURNS
1220  *  path from a passed PIDL.
1221  *
1222  * NOTES
1223  *    NULL returns FALSE
1224  *    desktop pidl gives path to desktop directory back
1225  *    special pidls returning FALSE
1226  */
1227 BOOL WINAPI SHGetPathFromIDListA(LPCITEMIDLIST pidl, LPSTR pszPath)
1228 {
1229     WCHAR wszPath[MAX_PATH];
1230     BOOL bSuccess;
1231
1232     bSuccess = SHGetPathFromIDListW(pidl, wszPath);
1233     if (bSuccess)
1234         WideCharToMultiByte(CP_ACP, 0, wszPath, -1, pszPath, MAX_PATH, NULL, NULL);
1235
1236     return bSuccess;
1237 }
1238
1239 /*************************************************************************
1240  * SHGetPathFromIDListW             [SHELL32.@]
1241  */
1242 BOOL WINAPI SHGetPathFromIDListW(LPCITEMIDLIST pidl, LPWSTR pszPath)
1243 {
1244     HRESULT hr;
1245     LPCITEMIDLIST pidlLast;
1246     LPSHELLFOLDER psfFolder;
1247     DWORD dwAttributes;
1248     STRRET strret;
1249
1250     TRACE_(shell)("(pidl=%p,%p)\n", pidl, debugstr_w(pszPath));
1251     pdump(pidl);
1252
1253     if (!pidl)
1254         return FALSE;
1255
1256     hr = SHBindToParent(pidl, &IID_IShellFolder, (VOID**)&psfFolder, &pidlLast);
1257     if (FAILED(hr)) return FALSE;
1258
1259     dwAttributes = SFGAO_FILESYSTEM;
1260     hr = IShellFolder_GetAttributesOf(psfFolder, 1, &pidlLast, &dwAttributes);
1261     if (FAILED(hr) || !(dwAttributes & SFGAO_FILESYSTEM)) return FALSE;
1262
1263     hr = IShellFolder_GetDisplayNameOf(psfFolder, pidlLast, SHGDN_FORPARSING, &strret);
1264     if (FAILED(hr)) return FALSE;
1265
1266     hr = StrRetToBufW(&strret, pidlLast, pszPath, MAX_PATH);
1267     IShellFolder_Release(psfFolder);
1268
1269     TRACE_(shell)("-- %s, 0x%08lx\n",debugstr_w(pszPath), hr);
1270     return SUCCEEDED(hr);
1271 }
1272
1273 /*************************************************************************
1274  *    SHBindToParent        [shell version 5.0]
1275  */
1276 HRESULT WINAPI SHBindToParent(LPCITEMIDLIST pidl, REFIID riid, LPVOID *ppv, LPCITEMIDLIST *ppidlLast)
1277 {
1278     IShellFolder    * psf;
1279     LPITEMIDLIST    pidlChild, pidlParent;
1280     HRESULT         hr=E_FAIL;
1281
1282     TRACE_(shell)("pidl=%p\n", pidl);
1283     pdump(pidl);
1284
1285     *ppv = NULL;
1286     if (ppidlLast)
1287         *ppidlLast = NULL;
1288
1289     if (_ILIsPidlSimple(pidl))
1290     {
1291         IShellFolder* desktop;
1292
1293         /* we are on desktop level */
1294         hr = SHGetDesktopFolder(&desktop);
1295
1296         if (SUCCEEDED(hr))
1297         {
1298             hr = IShellFolder_QueryInterface(desktop, riid, ppv);
1299
1300             if (SUCCEEDED(hr) && ppidlLast)
1301                 *ppidlLast = ILClone(pidl);
1302
1303             IShellFolder_Release(desktop);
1304         }
1305     }
1306     else
1307     {
1308         pidlChild =  ILClone(ILFindLastID(pidl));
1309         pidlParent = ILClone(pidl);
1310         ILRemoveLastID(pidlParent);
1311
1312         hr = SHGetDesktopFolder(&psf);
1313
1314         if (SUCCEEDED(hr))
1315             hr = IShellFolder_BindToObject(psf, pidlParent, NULL, riid, ppv);
1316
1317         if (SUCCEEDED(hr) && ppidlLast)
1318             *ppidlLast = pidlChild;
1319         else
1320             ILFree (pidlChild);
1321
1322         SHFree (pidlParent);
1323         if (psf)
1324             IShellFolder_Release(psf);
1325     }
1326
1327     TRACE_(shell)("-- psf=%p pidl=%p ret=0x%08lx\n", *ppv, (ppidlLast)?*ppidlLast:NULL, hr);
1328     return hr;
1329 }
1330
1331 /**************************************************************************
1332  *
1333  *        internal functions
1334  *
1335  *    ### 1. section creating pidls ###
1336  *
1337  *************************************************************************
1338  */
1339 LPITEMIDLIST _ILAlloc(PIDLTYPE type, unsigned int size)
1340 {
1341     LPITEMIDLIST pidlOut = NULL;
1342
1343     pidlOut = SHAlloc(size + 5);
1344     if(pidlOut)
1345     {
1346         LPPIDLDATA pData;
1347         LPITEMIDLIST pidlNext;
1348
1349         ZeroMemory(pidlOut, size + 5);
1350         pidlOut->mkid.cb = size + 3;
1351
1352         pData = _ILGetDataPointer(pidlOut);
1353         if (pData)
1354             pData->type = type;
1355
1356         pidlNext = ILGetNext(pidlOut);
1357         if (pidlNext)
1358             pidlNext->mkid.cb = 0x00;
1359         TRACE("-- (pidl=%p, size=%u)\n", pidlOut, size);
1360     }
1361
1362     return pidlOut;
1363 }
1364
1365 LPITEMIDLIST _ILCreateDesktop()
1366 {
1367     LPITEMIDLIST ret;
1368
1369     TRACE("()\n");
1370     ret = SHAlloc(2);
1371     if (ret)
1372         ret->mkid.cb = 0;
1373     return ret;
1374 }
1375
1376 LPITEMIDLIST _ILCreateMyComputer()
1377 {
1378     TRACE("()\n");
1379     return _ILCreateGuid(PT_GUID, &CLSID_MyComputer);
1380 }
1381
1382 LPITEMIDLIST _ILCreateIExplore()
1383 {
1384     TRACE("()\n");
1385     return _ILCreateGuid(PT_GUID, &CLSID_Internet);
1386 }
1387
1388 LPITEMIDLIST _ILCreateControlPanel()
1389 {
1390     LPITEMIDLIST parent = _ILCreateGuid(PT_GUID, &CLSID_MyComputer), ret = NULL;
1391
1392     TRACE("()\n");
1393     if (parent)
1394     {
1395         LPITEMIDLIST cpl = _ILCreateGuid(PT_SHELLEXT, &CLSID_ControlPanel);
1396
1397         if (cpl)
1398         {
1399             ret = ILCombine(parent, cpl);
1400             SHFree(cpl);
1401         }
1402         SHFree(parent);
1403     }
1404     return ret;
1405 }
1406
1407 LPITEMIDLIST _ILCreatePrinters()
1408 {
1409     LPITEMIDLIST parent = _ILCreateGuid(PT_GUID, &CLSID_MyComputer), ret = NULL;
1410
1411     TRACE("()\n");
1412     if (parent)
1413     {
1414         LPITEMIDLIST printers = _ILCreateGuid(PT_YAGUID, &CLSID_Printers);
1415
1416         if (printers)
1417         {
1418             ret = ILCombine(parent, printers);
1419             SHFree(printers);
1420         }
1421         SHFree(parent);
1422     }
1423     return ret;
1424 }
1425
1426 LPITEMIDLIST _ILCreateNetwork()
1427 {
1428     TRACE("()\n");
1429     return _ILCreateGuid(PT_GUID, &CLSID_NetworkPlaces);
1430 }
1431
1432 LPITEMIDLIST _ILCreateBitBucket()
1433 {
1434     TRACE("()\n");
1435     return _ILCreateGuid(PT_GUID, &CLSID_RecycleBin);
1436 }
1437
1438 LPITEMIDLIST _ILCreateGuid(PIDLTYPE type, REFIID guid)
1439 {
1440     LPITEMIDLIST pidlOut;
1441
1442     if (type == PT_SHELLEXT || type == PT_GUID || type == PT_YAGUID)
1443     {
1444         pidlOut = _ILAlloc(type, sizeof(GUIDStruct));
1445         if (pidlOut)
1446         {
1447             LPPIDLDATA pData = _ILGetDataPointer(pidlOut);
1448
1449             memcpy(&(pData->u.guid.guid), guid, sizeof(GUID));
1450             TRACE("-- create GUID-pidl %s\n",
1451                   debugstr_guid(&(pData->u.guid.guid)));
1452         }
1453     }
1454     else
1455     {
1456         WARN("%d: invalid type for GUID\n", type);
1457         pidlOut = NULL;
1458     }
1459     return pidlOut;
1460 }
1461
1462 LPITEMIDLIST _ILCreateGuidFromStrA(LPCSTR szGUID)
1463 {
1464     IID iid;
1465
1466     if (!SUCCEEDED(SHCLSIDFromStringA(szGUID, &iid)))
1467     {
1468         ERR("%s is not a GUID\n", szGUID);
1469         return NULL;
1470     }
1471     return _ILCreateGuid(PT_GUID, &iid);
1472 }
1473
1474 LPITEMIDLIST _ILCreateGuidFromStrW(LPCWSTR szGUID)
1475 {
1476     IID iid;
1477
1478     if (!SUCCEEDED(SHCLSIDFromStringW(szGUID, &iid)))
1479     {
1480         ERR("%s is not a GUID\n", debugstr_w(szGUID));
1481         return NULL;
1482     }
1483     return _ILCreateGuid(PT_GUID, &iid);
1484 }
1485
1486 LPITEMIDLIST _ILCreateFromFindDataW( WIN32_FIND_DATAW *wfd )
1487 {
1488     /* FIXME: should make unicode PIDLs */
1489     WIN32_FIND_DATAA fda;
1490
1491     memset( &fda, 0, sizeof fda );
1492     fda.dwFileAttributes = wfd->dwFileAttributes;
1493     fda.ftCreationTime = wfd->ftCreationTime;
1494     fda.ftLastAccessTime = wfd->ftLastAccessTime;
1495     fda.ftLastWriteTime = wfd->ftLastWriteTime;
1496     fda.nFileSizeHigh = wfd->nFileSizeHigh;
1497     fda.nFileSizeLow = wfd->nFileSizeLow;
1498     fda.dwReserved0 = wfd->dwReserved0;
1499     fda.dwReserved1 = wfd->dwReserved1;
1500     WideCharToMultiByte( CP_ACP, 0, wfd->cFileName, -1,
1501                          fda.cFileName, MAX_PATH, NULL, NULL );
1502     return _ILCreateFromFindDataA( &fda );
1503 }
1504
1505 LPITEMIDLIST _ILCreateFromFindDataA(WIN32_FIND_DATAA * stffile )
1506 {
1507     char    buff[MAX_PATH + 14 +1]; /* see WIN32_FIND_DATA */
1508     char *  pbuff = buff;
1509     size_t  len, len1;
1510     LPITEMIDLIST pidl;
1511     PIDLTYPE type;
1512
1513     if (!stffile)
1514         return NULL;
1515
1516     TRACE("(%s, %s)\n",stffile->cAlternateFileName, stffile->cFileName);
1517
1518     /* prepare buffer with both names */
1519     len = strlen (stffile->cFileName) + 1;
1520     memcpy (pbuff, stffile->cFileName, len);
1521     pbuff += len;
1522
1523     len1 = strlen (stffile->cAlternateFileName)+1;
1524     memcpy (pbuff, stffile->cAlternateFileName, len1);
1525
1526     type = (stffile->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? PT_FOLDER : PT_VALUE;
1527
1528     /*
1529      * FileStruct already has one byte for the first name, so use len - 1 in
1530      * size calculation
1531      */
1532     pidl = _ILAlloc(type, sizeof(FileStruct) + (len - 1) + len1);
1533     if (pidl)
1534     {
1535         LPPIDLDATA pData;
1536         LPSTR pszDest;
1537
1538         /* set attributes */
1539         pData = _ILGetDataPointer(pidl);
1540         if (pData)
1541         {
1542             pData->type = type;
1543             FileTimeToDosDateTime( &(stffile->ftLastWriteTime),
1544                           &pData->u.file.uFileDate, &pData->u.file.uFileTime);
1545             pData->u.file.dwFileSize = stffile->nFileSizeLow;
1546             pData->u.file.uFileAttribs = (WORD)stffile->dwFileAttributes;
1547         }
1548         pszDest = _ILGetTextPointer(pidl);
1549         if (pszDest)
1550         {
1551             memcpy(pszDest, buff, len + len1);
1552             TRACE("-- create Value: %s\n",debugstr_a(pszDest));
1553         }
1554     }
1555     return pidl;
1556 }
1557
1558 HRESULT _ILCreateFromPathA(LPCSTR szPath, LPITEMIDLIST* ppidl)
1559 {
1560     HANDLE hFile;
1561     WIN32_FIND_DATAA stffile;
1562
1563     if (!ppidl)
1564         return E_INVALIDARG;
1565
1566     hFile = FindFirstFileA(szPath, &stffile);
1567     if (hFile == INVALID_HANDLE_VALUE)
1568         return HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND);
1569
1570     FindClose(hFile);
1571
1572     *ppidl = _ILCreateFromFindDataA(&stffile);
1573
1574     return *ppidl ? S_OK : E_OUTOFMEMORY;
1575 }
1576
1577 HRESULT _ILCreateFromPathW(LPCWSTR szPath, LPITEMIDLIST* ppidl)
1578 {
1579     HANDLE hFile;
1580     WIN32_FIND_DATAW stffile;
1581
1582     if (!ppidl)
1583         return E_INVALIDARG;
1584
1585     hFile = FindFirstFileW(szPath, &stffile);
1586     if (hFile == INVALID_HANDLE_VALUE)
1587         return HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND);
1588
1589     FindClose(hFile);
1590
1591     *ppidl = _ILCreateFromFindDataW(&stffile);
1592
1593     return *ppidl ? S_OK : E_OUTOFMEMORY;
1594 }
1595
1596 LPITEMIDLIST _ILCreateDrive(LPCWSTR lpszNew)
1597 {
1598     LPITEMIDLIST pidlOut;
1599
1600     TRACE("(%s)\n",debugstr_w(lpszNew));
1601
1602     pidlOut = _ILAlloc(PT_DRIVE, sizeof(DriveStruct));
1603     if (pidlOut)
1604     {
1605         LPSTR pszDest;
1606
1607         pszDest = _ILGetTextPointer(pidlOut);
1608         if (pszDest)
1609         {
1610             strcpy(pszDest, "x:\\");
1611             pszDest[0]=toupperW(lpszNew[0]);
1612             TRACE("-- create Drive: %s\n", debugstr_a(pszDest));
1613         }
1614     }
1615     return pidlOut;
1616 }
1617
1618 /**************************************************************************
1619  *  _ILGetDrive()
1620  *
1621  *  Gets the text for the drive eg. 'c:\'
1622  *
1623  * RETURNS
1624  *  strlen (lpszText)
1625  */
1626 DWORD _ILGetDrive(LPCITEMIDLIST pidl,LPSTR pOut, UINT uSize)
1627 {
1628     TRACE("(%p,%p,%u)\n",pidl,pOut,uSize);
1629
1630     if(_ILIsMyComputer(pidl))
1631         pidl = ILGetNext(pidl);
1632
1633     if (pidl && _ILIsDrive(pidl))
1634         return _ILSimpleGetText(pidl, pOut, uSize);
1635
1636     return 0;
1637 }
1638
1639 /**************************************************************************
1640  *
1641  *    ### 2. section testing pidls ###
1642  *
1643  **************************************************************************
1644  *  _ILIsDesktop()
1645  *  _ILIsMyComputer()
1646  *  _ILIsSpecialFolder()
1647  *  _ILIsDrive()
1648  *  _ILIsFolder()
1649  *  _ILIsValue()
1650  *  _ILIsPidlSimple()
1651  */
1652 BOOL _ILIsDesktop(LPCITEMIDLIST pidl)
1653 {
1654     TRACE("(%p)\n",pidl);
1655
1656     return pidl && pidl->mkid.cb  ? 0 : 1;
1657 }
1658
1659 BOOL _ILIsMyComputer(LPCITEMIDLIST pidl)
1660 {
1661     REFIID iid = _ILGetGUIDPointer(pidl);
1662
1663     TRACE("(%p)\n",pidl);
1664
1665     if (iid)
1666         return IsEqualIID(iid, &CLSID_MyComputer);
1667     return FALSE;
1668 }
1669
1670 BOOL _ILIsSpecialFolder (LPCITEMIDLIST pidl)
1671 {
1672     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1673
1674     TRACE("(%p)\n",pidl);
1675
1676     return (pidl && ( (lpPData && (PT_GUID== lpPData->type || PT_SHELLEXT== lpPData->type || PT_YAGUID == lpPData->type)) ||
1677               (pidl && pidl->mkid.cb == 0x00)
1678             ));
1679 }
1680
1681 BOOL _ILIsDrive(LPCITEMIDLIST pidl)
1682 {
1683     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1684
1685     TRACE("(%p)\n",pidl);
1686
1687     return (pidl && lpPData && (PT_DRIVE == lpPData->type ||
1688                     PT_DRIVE1 == lpPData->type ||
1689                     PT_DRIVE2 == lpPData->type ||
1690                     PT_DRIVE3 == lpPData->type));
1691 }
1692
1693 BOOL _ILIsFolder(LPCITEMIDLIST pidl)
1694 {
1695     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1696
1697     TRACE("(%p)\n",pidl);
1698
1699     return (pidl && lpPData && (PT_FOLDER == lpPData->type || PT_FOLDER1 == lpPData->type));
1700 }
1701
1702 BOOL _ILIsValue(LPCITEMIDLIST pidl)
1703 {
1704     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1705
1706     TRACE("(%p)\n",pidl);
1707
1708     return (pidl && lpPData && PT_VALUE == lpPData->type);
1709 }
1710
1711 BOOL _ILIsCPanelStruct(LPCITEMIDLIST pidl)
1712 {
1713     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1714
1715     TRACE("(%p)\n",pidl);
1716
1717     return (pidl && lpPData && (lpPData->type == 0));
1718 }
1719
1720 /**************************************************************************
1721  *    _ILIsPidlSimple
1722  */
1723 BOOL _ILIsPidlSimple(LPCITEMIDLIST pidl)
1724 {
1725     BOOL ret = TRUE;
1726
1727     if(! _ILIsDesktop(pidl))    /* pidl=NULL or mkid.cb=0 */
1728     {
1729         WORD len = pidl->mkid.cb;
1730         LPCITEMIDLIST pidlnext = (LPCITEMIDLIST) (((const BYTE*)pidl) + len );
1731
1732         if (pidlnext->mkid.cb)
1733             ret = FALSE;
1734     }
1735
1736     TRACE("%s\n", ret ? "Yes" : "No");
1737     return ret;
1738 }
1739
1740 /**************************************************************************
1741  *
1742  *    ### 3. section getting values from pidls ###
1743  */
1744
1745  /**************************************************************************
1746  *  _ILSimpleGetText
1747  *
1748  * gets the text for the first item in the pidl (eg. simple pidl)
1749  *
1750  * returns the length of the string
1751  */
1752 DWORD _ILSimpleGetText (LPCITEMIDLIST pidl, LPSTR szOut, UINT uOutSize)
1753 {
1754     DWORD        dwReturn=0;
1755     LPSTR        szSrc;
1756     GUID const * riid;
1757     char szTemp[MAX_PATH];
1758
1759     TRACE("(%p %p %x)\n",pidl,szOut,uOutSize);
1760
1761     if (!pidl)
1762         return 0;
1763
1764     if (szOut)
1765         *szOut = 0;
1766
1767     if (_ILIsDesktop(pidl))
1768     {
1769         /* desktop */
1770         if (HCR_GetClassNameA(&CLSID_ShellDesktop, szTemp, MAX_PATH))
1771         {
1772             if (szOut)
1773                 lstrcpynA(szOut, szTemp, uOutSize);
1774
1775             dwReturn = strlen (szTemp);
1776         }
1777     }
1778     else if (( szSrc = _ILGetTextPointer(pidl) ))
1779     {
1780         /* filesystem */
1781         if (szOut)
1782             lstrcpynA(szOut, szSrc, uOutSize);
1783
1784         dwReturn = strlen(szSrc);
1785     }
1786     else if (( riid = _ILGetGUIDPointer(pidl) ))
1787     {
1788         /* special folder */
1789         if ( HCR_GetClassNameA(riid, szTemp, MAX_PATH) )
1790         {
1791             if (szOut)
1792                 lstrcpynA(szOut, szTemp, uOutSize);
1793
1794             dwReturn = strlen (szTemp);
1795         }
1796     }
1797     else
1798     {
1799         ERR("-- no text\n");
1800     }
1801
1802     TRACE("-- (%p=%s 0x%08lx)\n",szOut,debugstr_a(szOut),dwReturn);
1803     return dwReturn;
1804 }
1805
1806  /**************************************************************************
1807  *  _ILSimpleGetTextW
1808  *
1809  * gets the text for the first item in the pidl (eg. simple pidl)
1810  *
1811  * returns the length of the string
1812  */
1813 DWORD _ILSimpleGetTextW (LPCITEMIDLIST pidl, LPWSTR szOut, UINT uOutSize)
1814 {
1815     DWORD    dwReturn;
1816     char    szTemp[MAX_PATH];
1817
1818     TRACE("(%p %p %x)\n",pidl,szOut,uOutSize);
1819
1820     dwReturn = _ILSimpleGetText(pidl, szTemp, uOutSize);
1821
1822     if (!MultiByteToWideChar(CP_ACP, 0, szTemp, -1, szOut, MAX_PATH))
1823         *szOut = 0;
1824
1825     TRACE("-- (%p=%s 0x%08lx)\n",szOut,debugstr_w(szOut),dwReturn);
1826     return dwReturn;
1827 }
1828
1829 /**************************************************************************
1830  *
1831  *    ### 4. getting pointers to parts of pidls ###
1832  *
1833  **************************************************************************
1834  *  _ILGetDataPointer()
1835  */
1836 LPPIDLDATA _ILGetDataPointer(LPCITEMIDLIST pidl)
1837 {
1838     if(pidl && pidl->mkid.cb != 0x00)
1839         return (LPPIDLDATA) &(pidl->mkid.abID);
1840     return NULL;
1841 }
1842
1843 /**************************************************************************
1844  *  _ILGetTextPointer()
1845  * gets a pointer to the long filename string stored in the pidl
1846  */
1847 LPSTR _ILGetTextPointer(LPCITEMIDLIST pidl)
1848 {
1849     /* TRACE(pidl,"(pidl%p)\n", pidl);*/
1850
1851     LPPIDLDATA pdata = _ILGetDataPointer(pidl);
1852
1853     if (!pdata)
1854         return NULL;
1855
1856     switch (pdata->type)
1857     {
1858     case PT_GUID:
1859     case PT_SHELLEXT:
1860     case PT_YAGUID:
1861         return NULL;
1862
1863     case PT_DRIVE:
1864     case PT_DRIVE1:
1865     case PT_DRIVE2:
1866     case PT_DRIVE3:
1867         return (LPSTR)&(pdata->u.drive.szDriveName);
1868
1869     case PT_FOLDER:
1870     case PT_FOLDER1:
1871     case PT_VALUE:
1872     case PT_IESPECIAL1:
1873     case PT_IESPECIAL2:
1874         return (LPSTR)&(pdata->u.file.szNames);
1875
1876     case PT_WORKGRP:
1877     case PT_COMP:
1878     case PT_NETWORK:
1879     case PT_NETPROVIDER:
1880     case PT_SHARE:
1881         return (LPSTR)&(pdata->u.network.szNames);
1882     }
1883     return NULL;
1884 }
1885
1886 /**************************************************************************
1887  *  _ILGetSTextPointer()
1888  * gets a pointer to the short filename string stored in the pidl
1889  */
1890 LPSTR _ILGetSTextPointer(LPCITEMIDLIST pidl)
1891 {
1892     /* TRACE(pidl,"(pidl%p)\n", pidl); */
1893
1894     LPPIDLDATA pdata =_ILGetDataPointer(pidl);
1895
1896     if (!pdata)
1897         return NULL;
1898
1899     switch (pdata->type)
1900     {
1901     case PT_FOLDER:
1902     case PT_VALUE:
1903     case PT_IESPECIAL1:
1904     case PT_IESPECIAL2:
1905         return (LPSTR)(pdata->u.file.szNames + strlen (pdata->u.file.szNames) + 1);
1906
1907     case PT_WORKGRP:
1908         return (LPSTR)(pdata->u.network.szNames + strlen (pdata->u.network.szNames) + 1);
1909     }
1910     return NULL;
1911 }
1912
1913 /**************************************************************************
1914  * _ILGetGUIDPointer()
1915  *
1916  * returns reference to guid stored in some pidls
1917  */
1918 IID* _ILGetGUIDPointer(LPCITEMIDLIST pidl)
1919 {
1920     LPPIDLDATA pdata =_ILGetDataPointer(pidl);
1921
1922     TRACE("%p\n", pidl);
1923
1924     if (!pdata)
1925         return NULL;
1926
1927     TRACE("pdata->type 0x%04x\n", pdata->type);
1928     switch (pdata->type)
1929     {
1930     case PT_SHELLEXT:
1931     case PT_GUID:
1932     case PT_YAGUID:
1933         return &(pdata->u.guid.guid);
1934
1935     default:
1936         TRACE("Unknown pidl type 0x%04x\n", pdata->type);
1937         break;
1938     }
1939     return NULL;
1940 }
1941
1942 /*************************************************************************
1943  * _ILGetFileDateTime
1944  *
1945  * Given the ItemIdList, get the FileTime
1946  *
1947  * PARAMS
1948  *      pidl        [I] The ItemIDList
1949  *      pFt         [I] the resulted FILETIME of the file
1950  *
1951  * RETURNS
1952  *     True if Successful
1953  *
1954  * NOTES
1955  *
1956  */
1957 BOOL _ILGetFileDateTime(LPCITEMIDLIST pidl, FILETIME *pFt)
1958 {
1959     LPPIDLDATA pdata = _ILGetDataPointer(pidl);
1960
1961     if (!pdata)
1962         return FALSE;
1963
1964     switch (pdata->type)
1965     {
1966     case PT_FOLDER:
1967     case PT_VALUE:
1968         DosDateTimeToFileTime(pdata->u.file.uFileDate, pdata->u.file.uFileTime, pFt);
1969         break;
1970     default:
1971         return FALSE;
1972     }
1973     return TRUE;
1974 }
1975
1976 BOOL _ILGetFileDate (LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
1977 {
1978     FILETIME ft,lft;
1979     SYSTEMTIME time;
1980     BOOL ret;
1981
1982     if (_ILGetFileDateTime( pidl, &ft ))
1983     {
1984         FileTimeToLocalFileTime(&ft, &lft);
1985         FileTimeToSystemTime (&lft, &time);
1986         ret = GetDateFormatA(LOCALE_USER_DEFAULT,DATE_SHORTDATE,&time, NULL,  pOut, uOutSize);
1987     }
1988     else
1989     {
1990         pOut[0] = '\0';
1991         ret = FALSE;
1992     }
1993     return ret;
1994 }
1995
1996 /*************************************************************************
1997  * _ILGetFileSize
1998  *
1999  * Given the ItemIdList, get the FileSize
2000  *
2001  * PARAMS
2002  *    pidl     [I] The ItemIDList
2003  *    pOut     [I] The buffer to save the result
2004  *    uOutsize [I] The size of the buffer
2005  *
2006  * RETURNS
2007  *    The FileSize
2008  *
2009  * NOTES
2010  *    pOut can be null when no string is needed
2011  *
2012  */
2013 DWORD _ILGetFileSize (LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2014 {
2015     LPPIDLDATA pdata = _ILGetDataPointer(pidl);
2016     DWORD dwSize;
2017
2018     if (!pdata)
2019         return 0;
2020
2021     switch (pdata->type)
2022     {
2023     case PT_VALUE:
2024         dwSize = pdata->u.file.dwFileSize;
2025         if (pOut)
2026             StrFormatByteSizeA(dwSize, pOut, uOutSize);
2027         return dwSize;
2028     }
2029     if (pOut)
2030         *pOut = 0x00;
2031     return 0;
2032 }
2033
2034 BOOL _ILGetExtension (LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2035 {
2036     char szTemp[MAX_PATH];
2037     const char * pPoint;
2038     LPCITEMIDLIST  pidlTemp=pidl;
2039
2040     TRACE("pidl=%p\n",pidl);
2041
2042     if (!pidl)
2043         return FALSE;
2044
2045     pidlTemp = ILFindLastID(pidl);
2046
2047     if (!_ILIsValue(pidlTemp))
2048         return FALSE;
2049     if (!_ILSimpleGetText(pidlTemp, szTemp, MAX_PATH))
2050         return FALSE;
2051
2052     pPoint = PathFindExtensionA(szTemp);
2053
2054     if (!*pPoint)
2055         return FALSE;
2056
2057     pPoint++;
2058     lstrcpynA(pOut, pPoint, uOutSize);
2059     TRACE("%s\n",pOut);
2060
2061     return TRUE;
2062 }
2063
2064 /*************************************************************************
2065  * _ILGetFileType
2066  *
2067  * Given the ItemIdList, get the file type description
2068  *
2069  * PARAMS
2070  *      pidl        [I] The ItemIDList (simple)
2071  *      pOut        [I] The buffer to save the result
2072  *      uOutsize    [I] The size of the buffer
2073  *
2074  * RETURNS
2075  *    nothing
2076  *
2077  * NOTES
2078  *    This function copies as much as possible into the buffer.
2079  */
2080 void _ILGetFileType(LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2081 {
2082     if(_ILIsValue(pidl))
2083     {
2084         char sTemp[64];
2085
2086         if(uOutSize > 0)
2087             pOut[0] = 0;
2088         if (_ILGetExtension (pidl, sTemp, 64))
2089         {
2090             if (!( HCR_MapTypeToValueA(sTemp, sTemp, 64, TRUE)
2091                 && HCR_MapTypeToValueA(sTemp, pOut, uOutSize, FALSE )))
2092             {
2093                 lstrcpynA (pOut, sTemp, uOutSize - 6);
2094                 strcat (pOut, "-file");
2095             }
2096         }
2097     }
2098     else
2099         lstrcpynA(pOut, "Folder", uOutSize);
2100 }
2101
2102 /*************************************************************************
2103  * _ILGetFileAttributes
2104  *
2105  * Given the ItemIdList, get the Attrib string format
2106  *
2107  * PARAMS
2108  *      pidl        [I] The ItemIDList
2109  *      pOut        [I] The buffer to save the result
2110  *      uOutsize    [I] The size of the Buffer
2111  *
2112  * RETURNS
2113  *     Attributes
2114  *
2115  * FIXME
2116  *  return value 0 in case of error is a valid return value
2117  *
2118  */
2119 DWORD _ILGetFileAttributes(LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2120 {
2121     LPPIDLDATA pData = _ILGetDataPointer(pidl);
2122     WORD wAttrib = 0;
2123     int i;
2124
2125     if (!pData)
2126         return 0;
2127
2128     switch(pData->type)
2129     {
2130     case PT_FOLDER:
2131     case PT_VALUE:
2132         wAttrib = pData->u.file.uFileAttribs;
2133         break;
2134     }
2135
2136     if(uOutSize >= 6)
2137     {
2138         i=0;
2139         if(wAttrib & FILE_ATTRIBUTE_READONLY)
2140             pOut[i++] = 'R';
2141         if(wAttrib & FILE_ATTRIBUTE_HIDDEN)
2142             pOut[i++] = 'H';
2143         if(wAttrib & FILE_ATTRIBUTE_SYSTEM)
2144             pOut[i++] = 'S';
2145         if(wAttrib & FILE_ATTRIBUTE_ARCHIVE)
2146             pOut[i++] = 'A';
2147         if(wAttrib & FILE_ATTRIBUTE_COMPRESSED)
2148             pOut[i++] = 'C';
2149         pOut[i] = 0x00;
2150     }
2151     return wAttrib;
2152 }
2153
2154 /*************************************************************************
2155  * ILFreeaPidl
2156  *
2157  * free a aPidl struct
2158  */
2159 void _ILFreeaPidl(LPITEMIDLIST * apidl, UINT cidl)
2160 {
2161     UINT   i;
2162
2163     if (apidl)
2164     {
2165         for (i = 0; i < cidl; i++)
2166             SHFree(apidl[i]);
2167         SHFree(apidl);
2168     }
2169 }
2170
2171 /*************************************************************************
2172  * ILCopyaPidl
2173  *
2174  * copies an aPidl struct
2175  */
2176 LPITEMIDLIST* _ILCopyaPidl(LPCITEMIDLIST * apidlsrc, UINT cidl)
2177 {
2178     UINT i;
2179     LPITEMIDLIST *apidldest;
2180
2181     apidldest = SHAlloc(cidl * sizeof(LPITEMIDLIST));
2182     if (!apidlsrc)
2183         return NULL;
2184
2185     for (i = 0; i < cidl; i++)
2186         apidldest[i] = ILClone(apidlsrc[i]);
2187
2188     return apidldest;
2189 }
2190
2191 /*************************************************************************
2192  * _ILCopyCidaToaPidl
2193  *
2194  * creates aPidl from CIDA
2195  */
2196 LPITEMIDLIST* _ILCopyCidaToaPidl(LPITEMIDLIST* pidl, LPIDA cida)
2197 {
2198     UINT i;
2199     LPITEMIDLIST *dst;
2200
2201     dst = SHAlloc(cida->cidl * sizeof(LPITEMIDLIST));
2202     if (!dst)
2203         return NULL;
2204
2205     if (pidl)
2206         *pidl = ILClone((LPITEMIDLIST)(&((LPBYTE)cida)[cida->aoffset[0]]));
2207
2208     for (i = 0; i < cida->cidl; i++)
2209         dst[i] = ILClone((LPITEMIDLIST)(&((LPBYTE)cida)[cida->aoffset[i + 1]]));
2210
2211     return dst;
2212 }