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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, 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 "shlwapi.h"
  47
  48 #include "pidl.h"
  49 #include "wine/debug.h"
  50
  51 WINE_DEFAULT_DEBUG_CHANNEL(pidl);
  52 WINE_DECLARE_DEBUG_CHANNEL(shell);
  53
  54 /* from comctl32.dll */
  55 extern LPVOID WINAPI Alloc(INT);
  56 extern BOOL WINAPI Free(LPVOID);
  57
  58 /*************************************************************************
  59  * ILGetDisplayNameEx        [SHELL32.186]
  60  *
  61  * Retrieves the display name of an ItemIDList
  62  *
  63  * PARAMS
  64  *  psf        [I]   Shell Folder to start with, if NULL the desktop is used
  65  *  pidl       [I]   ItemIDList relativ to the psf to get the display name for
  66  *  path       [O]   Filled in with the display name, assumed to be at least MAX_PATH long
  67  *  type       [I]   Type of display name to retrieve
  68  *                    0 = SHGDN_FORPARSING | SHGDN_FORADDRESSBAR uses always the desktop as root
  69  *                    1 = SHGDN_NORMAL relative to the root folder
  70  *                    2 = SHGDN_INFOLDER relative to the root folder, only the last name
  71  *
  72  * RETURNS
  73  *  True if the display name could be retrieved successfully, False otherwise
  74  */
  75 BOOL WINAPI ILGetDisplayNameExA(LPSHELLFOLDER psf, LPCITEMIDLIST pidl, LPSTR path, DWORD type)
  76 {
  77     BOOL ret = FALSE;
  78     WCHAR wPath[MAX_PATH];
  79
  80     TRACE("%p %p %p %d\n", psf, pidl, path, type);
  81
  82     if (!pidl || !path)
  83         return FALSE;
  84
  85     ret = ILGetDisplayNameExW(psf, pidl, wPath, type);
  86     WideCharToMultiByte(CP_ACP, 0, wPath, -1, path, MAX_PATH, NULL, NULL);
  87     TRACE("%p %p %s\n", psf, pidl, debugstr_a(path));
  88
  89     return ret;
  90 }
  91
  92 BOOL WINAPI ILGetDisplayNameExW(LPSHELLFOLDER psf, LPCITEMIDLIST pidl, LPWSTR path, DWORD type)
  93 {
  94     LPSHELLFOLDER psfParent, lsf = psf;
  95     HRESULT ret = NO_ERROR;
  96     LPCITEMIDLIST pidllast;
  97     STRRET strret;
  98     DWORD flag;
  99
 100     TRACE("%p %p %p %d\n", psf, pidl, path, type);
 101
 102     if (!pidl || !path)
 103         return FALSE;
 104
 105     if (!lsf)
 106     {
 107         ret = SHGetDesktopFolder(&lsf);
 108         if (FAILED(ret))
 109             return FALSE;
 110     }
 111
 112     if (type >= 0 && type <= 2)
 113     {
 114         switch (type)
 115         {
 116         case ILGDN_FORPARSING:
 117             flag = SHGDN_FORPARSING | SHGDN_FORADDRESSBAR;
 118             break;
 119         case ILGDN_NORMAL:
 120             flag = SHGDN_NORMAL;
 121             break;
 122         case ILGDN_INFOLDER:
 123             flag = SHGDN_INFOLDER;
 124             break;
 125         default:
 126             FIXME("Unknown type parameter = %x\n", type);
 127             flag = SHGDN_FORPARSING | SHGDN_FORADDRESSBAR;
 128             break;
 129         }
 130         if (!*(const WORD*)pidl || type == ILGDN_FORPARSING)
 131         {
 132             ret = IShellFolder_GetDisplayNameOf(lsf, pidl, flag, &strret);
 133             if (SUCCEEDED(ret))
 134             {
 135                 if(!StrRetToStrNW(path, MAX_PATH, &strret, pidl))
 136                     ret = E_FAIL;
 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                     if(!StrRetToStrNW(path, MAX_PATH, &strret, pidllast))
 148                         ret = E_FAIL;
 149                 }
 150                 IShellFolder_Release(psfParent);
 151             }
 152         }
 153     }
 154
 155     TRACE("%p %p %s\n", psf, pidl, debugstr_w(path));
 156
 157     if (!psf)
 158         IShellFolder_Release(lsf);
 159     return SUCCEEDED(ret);
 160 }
 161
 162 BOOL WINAPI ILGetDisplayNameEx(LPSHELLFOLDER psf, LPCITEMIDLIST pidl, LPVOID path, DWORD type)
 163 {
 164     TRACE_(shell)("%p %p %p %d\n", psf, pidl, path, type);
 165
 166     if (SHELL_OsIsUnicode())
 167         return ILGetDisplayNameExW(psf, pidl, path, type);
 168     return ILGetDisplayNameExA(psf, pidl, path, type);
 169 }
 170
 171 /*************************************************************************
 172  * ILGetDisplayName            [SHELL32.15]
 173  */
 174 BOOL WINAPI ILGetDisplayName(LPCITEMIDLIST pidl, LPVOID path)
 175 {
 176     TRACE_(shell)("%p %p\n", pidl, path);
 177
 178     if (SHELL_OsIsUnicode())
 179         return ILGetDisplayNameExW(NULL, pidl, path, ILGDN_FORPARSING);
 180     return ILGetDisplayNameExA(NULL, pidl, path, ILGDN_FORPARSING);
 181 }
 182
 183 /*************************************************************************
 184  * ILFindLastID [SHELL32.16]
 185  *
 186  * NOTES
 187  *   observed: pidl=Desktop return=pidl
 188  */
 189 LPITEMIDLIST WINAPI ILFindLastID(LPCITEMIDLIST pidl)
 190 {
 191     LPCITEMIDLIST   pidlLast = pidl;
 192
 193     TRACE("(pidl=%p)\n",pidl);
 194
 195     if (!pidl)
 196         return NULL;
 197
 198     while (pidl->mkid.cb)
 199     {
 200         pidlLast = pidl;
 201         pidl = ILGetNext(pidl);
 202     }
 203     return (LPITEMIDLIST)pidlLast;
 204 }
 205
 206 /*************************************************************************
 207  * ILRemoveLastID [SHELL32.17]
 208  *
 209  * NOTES
 210  *   when pidl=Desktop return=FALSE
 211  */
 212 BOOL WINAPI ILRemoveLastID(LPITEMIDLIST pidl)
 213 {
 214     TRACE_(shell)("pidl=%p\n",pidl);
 215
 216     if (!pidl || !pidl->mkid.cb)
 217         return 0;
 218     ILFindLastID(pidl)->mkid.cb = 0;
 219     return 1;
 220 }
 221
 222 /*************************************************************************
 223  * ILClone [SHELL32.18]
 224  *
 225  * NOTES
 226  *    duplicate an idlist
 227  */
 228 LPITEMIDLIST WINAPI ILClone (LPCITEMIDLIST pidl)
 229 {
 230     DWORD    len;
 231     LPITEMIDLIST  newpidl;
 232
 233     if (!pidl)
 234         return NULL;
 235
 236     len = ILGetSize(pidl);
 237     newpidl = (LPITEMIDLIST)SHAlloc(len);
 238     if (newpidl)
 239         memcpy(newpidl,pidl,len);
 240
 241     TRACE("pidl=%p newpidl=%p\n",pidl, newpidl);
 242     pdump(pidl);
 243
 244     return newpidl;
 245 }
 246
 247 /*************************************************************************
 248  * ILCloneFirst [SHELL32.19]
 249  *
 250  * NOTES
 251  *  duplicates the first idlist of a complex pidl
 252  */
 253 LPITEMIDLIST WINAPI ILCloneFirst(LPCITEMIDLIST pidl)
 254 {
 255     DWORD len;
 256     LPITEMIDLIST pidlNew = NULL;
 257
 258     TRACE("pidl=%p\n", pidl);
 259     pdump(pidl);
 260
 261     if (pidl)
 262     {
 263         len = pidl->mkid.cb;
 264         pidlNew = (LPITEMIDLIST) SHAlloc (len+2);
 265         if (pidlNew)
 266         {
 267             memcpy(pidlNew,pidl,len+2);        /* 2 -> mind a desktop pidl */
 268
 269             if (len)
 270                 ILGetNext(pidlNew)->mkid.cb = 0x00;
 271         }
 272     }
 273     TRACE("-- newpidl=%p\n",pidlNew);
 274
 275     return pidlNew;
 276 }
 277
 278 /*************************************************************************
 279  * ILLoadFromStream (SHELL32.26)
 280  *
 281  * NOTES
 282  *   the first two bytes are the len, the pidl is following then
 283  */
 284 HRESULT WINAPI ILLoadFromStream (IStream * pStream, LPITEMIDLIST * ppPidl)
 285 {
 286     WORD        wLen = 0;
 287     DWORD       dwBytesRead;
 288     HRESULT     ret = E_FAIL;
 289
 290
 291     TRACE_(shell)("%p %p\n", pStream ,  ppPidl);
 292
 293     SHFree(*ppPidl);
 294     *ppPidl = NULL;
 295
 296     IStream_AddRef (pStream);
 297
 298     if (SUCCEEDED(IStream_Read(pStream, (LPVOID)&wLen, 2, &dwBytesRead)))
 299     {
 300         TRACE("PIDL length is %d\n", wLen);
 301         if (wLen != 0)
 302         {
 303             *ppPidl = SHAlloc (wLen);
 304             if (SUCCEEDED(IStream_Read(pStream, *ppPidl , wLen, &dwBytesRead)))
 305             {
 306                 TRACE("Stream read OK\n");
 307                 ret = S_OK;
 308             }
 309             else
 310             {
 311                 WARN("reading pidl failed\n");
 312                 SHFree(*ppPidl);
 313                 *ppPidl = NULL;
 314             }
 315         }
 316         else
 317         {
 318             *ppPidl = NULL;
 319             ret = S_OK;
 320         }
 321     }
 322
 323     /* we are not yet fully compatible */
 324     if (*ppPidl && !pcheck(*ppPidl))
 325     {
 326         WARN("Check failed\n");
 327         SHFree(*ppPidl);
 328         *ppPidl = NULL;
 329     }
 330
 331     IStream_Release (pStream);
 332     TRACE("done\n");
 333     return ret;
 334 }
 335
 336 /*************************************************************************
 337  * ILSaveToStream (SHELL32.27)
 338  *
 339  * NOTES
 340  *   the first two bytes are the len, the pidl is following then
 341  */
 342 HRESULT WINAPI ILSaveToStream (IStream * pStream, LPCITEMIDLIST pPidl)
 343 {
 344     WORD        wLen = 0;
 345     HRESULT        ret = E_FAIL;
 346
 347     TRACE_(shell)("%p %p\n", pStream, pPidl);
 348
 349     IStream_AddRef (pStream);
 350
 351     wLen = ILGetSize(pPidl);
 352
 353     if (SUCCEEDED(IStream_Write(pStream, (LPVOID)&wLen, 2, NULL)))
 354     {
 355         if (SUCCEEDED(IStream_Write(pStream, pPidl, wLen, NULL)))
 356             ret = S_OK;
 357     }
 358     IStream_Release (pStream);
 359
 360     return ret;
 361 }
 362
 363 /*************************************************************************
 364  * SHILCreateFromPath        [SHELL32.28]
 365  *
 366  * Create an ItemIDList from a path
 367  *
 368  * PARAMS
 369  *  path       [I]
 370  *  ppidl      [O]
 371  *  attributes [I/O] requested attributes on call and actual attributes when
 372  *                   the function returns
 373  *
 374  * RETURNS
 375  *  NO_ERROR if successful, or an OLE errer code otherwise
 376  *
 377  * NOTES
 378  *  Wrapper for IShellFolder_ParseDisplayName().
 379  */
 380 HRESULT WINAPI SHILCreateFromPathA(LPCSTR path, LPITEMIDLIST * ppidl, DWORD * attributes)
 381 {
 382     WCHAR lpszDisplayName[MAX_PATH];
 383
 384     TRACE_(shell)("%s %p 0x%08x\n", path, ppidl, attributes ? *attributes : 0);
 385
 386     if (!MultiByteToWideChar(CP_ACP, 0, path, -1, lpszDisplayName, MAX_PATH))
 387         lpszDisplayName[MAX_PATH-1] = 0;
 388
 389     return SHILCreateFromPathW(lpszDisplayName, ppidl, attributes);
 390 }
 391
 392 HRESULT WINAPI SHILCreateFromPathW(LPCWSTR path, LPITEMIDLIST * ppidl, DWORD * attributes)
 393 {
 394     LPSHELLFOLDER sf;
 395     DWORD pchEaten;
 396     HRESULT ret = E_FAIL;
 397
 398     TRACE_(shell)("%s %p 0x%08x\n", debugstr_w(path), ppidl, attributes ? *attributes : 0);
 399
 400     if (SUCCEEDED (SHGetDesktopFolder(&sf)))
 401     {
 402         ret = IShellFolder_ParseDisplayName(sf, 0, NULL, (LPWSTR)path, &pchEaten, ppidl, attributes);
 403         IShellFolder_Release(sf);
 404     }
 405     return ret;
 406 }
 407
 408 HRESULT WINAPI SHILCreateFromPathAW (LPCVOID path, LPITEMIDLIST * ppidl, DWORD * attributes)
 409 {
 410     if ( SHELL_OsIsUnicode())
 411         return SHILCreateFromPathW (path, ppidl, attributes);
 412     return SHILCreateFromPathA (path, ppidl, attributes);
 413 }
 414
 415 /*************************************************************************
 416  * SHCloneSpecialIDList      [SHELL32.89]
 417  *
 418  * Create an ItemIDList to one of the special folders.
 419
 420  * PARAMS
 421  *  hwndOwner    [in]
 422  *  nFolder      [in]    CSIDL_xxxxx
 423  *  fCreate      [in]    Create folder if it does not exist
 424  *
 425  * RETURNS
 426  *  Success: The newly created pidl
 427  *  Failure: NULL, if inputs are invalid.
 428  *
 429  * NOTES
 430  *  exported by ordinal.
 431  *  Caller is responsible for deallocating the returned ItemIDList with the
 432  *  shells IMalloc interface, aka ILFree.
 433  */
 434 LPITEMIDLIST WINAPI SHCloneSpecialIDList(HWND hwndOwner, DWORD nFolder, BOOL fCreate)
 435 {
 436     LPITEMIDLIST ppidl;
 437     TRACE_(shell)("(hwnd=%p,csidl=0x%x,%s).\n", hwndOwner, nFolder, fCreate ? "T" : "F");
 438
 439     if (fCreate)
 440         nFolder |= CSIDL_FLAG_CREATE;
 441
 442     SHGetSpecialFolderLocation(hwndOwner, nFolder, &ppidl);
 443     return ppidl;
 444 }
 445
 446 /*************************************************************************
 447  * ILGlobalClone             [SHELL32.20]
 448  *
 449  * Clones an ItemIDList using Alloc.
 450  *
 451  * PARAMS
 452  *  pidl       [I]   ItemIDList to clone
 453  *
 454  * RETURNS
 455  *  Newly allocated ItemIDList.
 456  *
 457  * NOTES
 458  *  exported by ordinal.
 459  */
 460 LPITEMIDLIST WINAPI ILGlobalClone(LPCITEMIDLIST pidl)
 461 {
 462     DWORD    len;
 463     LPITEMIDLIST  newpidl;
 464
 465     if (!pidl)
 466         return NULL;
 467
 468     len = ILGetSize(pidl);
 469     newpidl = (LPITEMIDLIST)Alloc(len);
 470     if (newpidl)
 471         memcpy(newpidl,pidl,len);
 472
 473     TRACE("pidl=%p newpidl=%p\n",pidl, newpidl);
 474     pdump(pidl);
 475
 476     return newpidl;
 477 }
 478
 479 /*************************************************************************
 480  * ILIsEqual [SHELL32.21]
 481  *
 482  */
 483 BOOL WINAPI ILIsEqual(LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 484 {
 485     char    szData1[MAX_PATH];
 486     char    szData2[MAX_PATH];
 487
 488     LPCITEMIDLIST pidltemp1 = pidl1;
 489     LPCITEMIDLIST pidltemp2 = pidl2;
 490
 491     TRACE("pidl1=%p pidl2=%p\n",pidl1, pidl2);
 492
 493     /*
 494      * Explorer reads from registry directly (StreamMRU),
 495      * so we can only check here
 496      */
 497     if (!pcheck(pidl1) || !pcheck (pidl2))
 498         return FALSE;
 499
 500     pdump (pidl1);
 501     pdump (pidl2);
 502
 503     if (!pidl1 || !pidl2)
 504         return FALSE;
 505
 506     while (pidltemp1->mkid.cb && pidltemp2->mkid.cb)
 507     {
 508         _ILSimpleGetText(pidltemp1, szData1, MAX_PATH);
 509         _ILSimpleGetText(pidltemp2, szData2, MAX_PATH);
 510
 511         if (strcasecmp( szData1, szData2 ))
 512             return FALSE;
 513
 514         pidltemp1 = ILGetNext(pidltemp1);
 515         pidltemp2 = ILGetNext(pidltemp2);
 516     }
 517
 518     if (!pidltemp1->mkid.cb && !pidltemp2->mkid.cb)
 519         return TRUE;
 520
 521     return FALSE;
 522 }
 523
 524 /*************************************************************************
 525  * ILIsParent                [SHELL32.23]
 526  *
 527  * Verifies that pidlParent is indeed the (immediate) parent of pidlChild.
 528  *
 529  * PARAMS
 530  *  pidlParent [I]
 531  *  pidlChild  [I]
 532  *  bImmediate [I]   only return true if the parent is the direct parent
 533  *                   of the child
 534  *
 535  * RETURNS
 536  *  True if the parent ItemIDlist is a complete part of the child ItemIdList,
 537  *  False otherwise.
 538  *
 539  * NOTES
 540  *  parent = a/b, child = a/b/c -> true, c is in folder a/b
 541  *  child = a/b/c/d -> false if bImmediate is true, d is not in folder a/b
 542  *  child = a/b/c/d -> true if bImmediate is false, d is in a subfolder of a/b
 543  */
 544 BOOL WINAPI ILIsParent(LPCITEMIDLIST pidlParent, LPCITEMIDLIST pidlChild, BOOL bImmediate)
 545 {
 546     char    szData1[MAX_PATH];
 547     char    szData2[MAX_PATH];
 548     LPCITEMIDLIST pParent = pidlParent;
 549     LPCITEMIDLIST pChild = pidlChild;
 550
 551     TRACE("%p %p %x\n", pidlParent, pidlChild, bImmediate);
 552
 553     if (!pParent || !pChild)
 554         return FALSE;
 555
 556     while (pParent->mkid.cb && pChild->mkid.cb)
 557     {
 558         _ILSimpleGetText(pParent, szData1, MAX_PATH);
 559         _ILSimpleGetText(pChild, szData2, MAX_PATH);
 560
 561         if (strcasecmp( szData1, szData2 ))
 562             return FALSE;
 563
 564         pParent = ILGetNext(pParent);
 565         pChild = ILGetNext(pChild);
 566     }
 567
 568     /* child shorter or has equal length to parent */
 569     if (pParent->mkid.cb || !pChild->mkid.cb)
 570         return FALSE;
 571
 572     /* not immediate descent */
 573     if ( ILGetNext(pChild)->mkid.cb && bImmediate)
 574         return FALSE;
 575
 576     return TRUE;
 577 }
 578
 579 /*************************************************************************
 580  * ILFindChild               [SHELL32.24]
 581  *
 582  *  Compares elements from pidl1 and pidl2.
 583  *
 584  * PARAMS
 585  *  pidl1      [I]
 586  *  pidl2      [I]
 587  *
 588  * RETURNS
 589  *  pidl1 is desktop      pidl2
 590  *  pidl1 shorter pidl2   pointer to first different element of pidl2
 591  *                        if there was at least one equal element
 592  *  pidl2 shorter pidl1   0
 593  *  pidl2 equal pidl1     pointer to last 0x00-element of pidl2
 594  *
 595  * NOTES
 596  *  exported by ordinal.
 597  */
 598 LPITEMIDLIST WINAPI ILFindChild(LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 599 {
 600     char    szData1[MAX_PATH];
 601     char    szData2[MAX_PATH];
 602
 603     LPCITEMIDLIST pidltemp1 = pidl1;
 604     LPCITEMIDLIST pidltemp2 = pidl2;
 605     LPCITEMIDLIST ret=NULL;
 606
 607     TRACE("pidl1=%p pidl2=%p\n",pidl1, pidl2);
 608
 609     /* explorer reads from registry directly (StreamMRU),
 610        so we can only check here */
 611     if ((!pcheck (pidl1)) || (!pcheck (pidl2)))
 612         return FALSE;
 613
 614     pdump (pidl1);
 615     pdump (pidl2);
 616
 617     if (_ILIsDesktop(pidl1))
 618     {
 619         ret = pidl2;
 620     }
 621     else
 622     {
 623         while (pidltemp1->mkid.cb && pidltemp2->mkid.cb)
 624         {
 625             _ILSimpleGetText(pidltemp1, szData1, MAX_PATH);
 626             _ILSimpleGetText(pidltemp2, szData2, MAX_PATH);
 627
 628             if (strcasecmp(szData1,szData2))
 629                 break;
 630
 631             pidltemp1 = ILGetNext(pidltemp1);
 632             pidltemp2 = ILGetNext(pidltemp2);
 633             ret = pidltemp2;
 634         }
 635
 636         if (pidltemp1->mkid.cb)
 637             ret = NULL; /* elements of pidl1 left*/
 638     }
 639     TRACE_(shell)("--- %p\n", ret);
 640     return (LPITEMIDLIST)ret; /* pidl 1 is shorter */
 641 }
 642
 643 /*************************************************************************
 644  * ILCombine                 [SHELL32.25]
 645  *
 646  * Concatenates two complex ItemIDLists.
 647  *
 648  * PARAMS
 649  *  pidl1      [I]   first complex ItemIDLists
 650  *  pidl2      [I]   complex ItemIDLists to append
 651  *
 652  * RETURNS
 653  *  if both pidl's == NULL      NULL
 654  *  if pidl1 == NULL            cloned pidl2
 655  *  if pidl2 == NULL            cloned pidl1
 656  *  otherwise new pidl with pidl2 appended to pidl1
 657  *
 658  * NOTES
 659  *  exported by ordinal.
 660  *  Does not destroy the passed in ItemIDLists!
 661  */
 662 LPITEMIDLIST WINAPI ILCombine(LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 663 {
 664     DWORD    len1,len2;
 665     LPITEMIDLIST  pidlNew;
 666
 667     TRACE("pidl=%p pidl=%p\n",pidl1,pidl2);
 668
 669     if (!pidl1 && !pidl2) return NULL;
 670
 671     pdump (pidl1);
 672     pdump (pidl2);
 673
 674     if (!pidl1)
 675     {
 676         pidlNew = ILClone(pidl2);
 677         return pidlNew;
 678     }
 679
 680     if (!pidl2)
 681     {
 682         pidlNew = ILClone(pidl1);
 683         return pidlNew;
 684     }
 685
 686     len1  = ILGetSize(pidl1)-2;
 687     len2  = ILGetSize(pidl2);
 688     pidlNew  = SHAlloc(len1+len2);
 689
 690     if (pidlNew)
 691     {
 692         memcpy(pidlNew,pidl1,len1);
 693         memcpy(((BYTE *)pidlNew)+len1,pidl2,len2);
 694     }
 695
 696     /*  TRACE(pidl,"--new pidl=%p\n",pidlNew);*/
 697     return pidlNew;
 698 }
 699
 700 /*************************************************************************
 701  *  SHGetRealIDL [SHELL32.98]
 702  *
 703  * NOTES
 704  */
 705 HRESULT WINAPI SHGetRealIDL(LPSHELLFOLDER lpsf, LPCITEMIDLIST pidlSimple, LPITEMIDLIST *pidlReal)
 706 {
 707     IDataObject* pDataObj;
 708     HRESULT hr;
 709
 710     hr = IShellFolder_GetUIObjectOf(lpsf, 0, 1, &pidlSimple,
 711                              &IID_IDataObject, 0, (LPVOID*)&pDataObj);
 712     if (SUCCEEDED(hr))
 713     {
 714         STGMEDIUM medium;
 715         FORMATETC fmt;
 716
 717         fmt.cfFormat = RegisterClipboardFormatA(CFSTR_SHELLIDLIST);
 718         fmt.ptd = NULL;
 719         fmt.dwAspect = DVASPECT_CONTENT;
 720         fmt.lindex = -1;
 721         fmt.tymed = TYMED_HGLOBAL;
 722
 723         hr = IDataObject_GetData(pDataObj, &fmt, &medium);
 724
 725         IDataObject_Release(pDataObj);
 726
 727         if (SUCCEEDED(hr))
 728         {
 729             /*assert(pida->cidl==1);*/
 730             LPIDA pida = (LPIDA)GlobalLock(medium.u.hGlobal);
 731
 732             LPCITEMIDLIST pidl_folder = (LPCITEMIDLIST) ((LPBYTE)pida+pida->aoffset[0]);
 733             LPCITEMIDLIST pidl_child = (LPCITEMIDLIST) ((LPBYTE)pida+pida->aoffset[1]);
 734
 735             *pidlReal = ILCombine(pidl_folder, pidl_child);
 736
 737             if (!*pidlReal)
 738                 hr = E_OUTOFMEMORY;
 739
 740             GlobalUnlock(medium.u.hGlobal);
 741             GlobalFree(medium.u.hGlobal);
 742         }
 743     }
 744
 745     return hr;
 746 }
 747
 748 /*************************************************************************
 749  *  SHLogILFromFSIL [SHELL32.95]
 750  *
 751  * NOTES
 752  *  pild = CSIDL_DESKTOP    ret = 0
 753  *  pild = CSIDL_DRIVES     ret = 0
 754  */
 755 LPITEMIDLIST WINAPI SHLogILFromFSIL(LPITEMIDLIST pidl)
 756 {
 757     FIXME("(pidl=%p)\n",pidl);
 758
 759     pdump(pidl);
 760
 761     return 0;
 762 }
 763
 764 /*************************************************************************
 765  * ILGetSize                 [SHELL32.152]
 766  *
 767  * Gets the byte size of an ItemIDList including zero terminator
 768  *
 769  * PARAMS
 770  *  pidl       [I]   ItemIDList
 771  *
 772  * RETURNS
 773  *  size of pidl in bytes
 774  *
 775  * NOTES
 776  *  exported by ordinal
 777  */
 778 UINT WINAPI ILGetSize(LPCITEMIDLIST pidl)
 779 {
 780     LPCSHITEMID si = &(pidl->mkid);
 781     UINT len=0;
 782
 783     if (pidl)
 784     {
 785         while (si->cb)
 786         {
 787             len += si->cb;
 788             si  = (LPCSHITEMID)(((const BYTE*)si)+si->cb);
 789         }
 790         len += 2;
 791     }
 792     TRACE("pidl=%p size=%u\n",pidl, len);
 793     return len;
 794 }
 795
 796 /*************************************************************************
 797  * ILGetNext                 [SHELL32.153]
 798  *
 799  * Gets the next ItemID of an ItemIDList
 800  *
 801  * PARAMS
 802  *  pidl       [I]   ItemIDList
 803  *
 804  * RETURNS
 805  *  null -> null
 806  *  desktop -> null
 807  *  simple pidl -> pointer to 0x0000 element
 808  *
 809  * NOTES
 810  *  exported by ordinal.
 811  */
 812 LPITEMIDLIST WINAPI ILGetNext(LPCITEMIDLIST pidl)
 813 {
 814     WORD len;
 815
 816     TRACE("%p\n", pidl);
 817
 818     if (pidl)
 819     {
 820         len =  pidl->mkid.cb;
 821         if (len)
 822         {
 823             pidl = (LPCITEMIDLIST) (((const BYTE*)pidl)+len);
 824             TRACE("-- %p\n", pidl);
 825             return (LPITEMIDLIST)pidl;
 826         }
 827     }
 828     return NULL;
 829 }
 830
 831 /*************************************************************************
 832  * ILAppend                  [SHELL32.154]
 833  *
 834  * Adds the single ItemID item to the ItemIDList indicated by pidl.
 835  * If bEnd is FALSE, inserts the item in the front of the list,
 836  * otherwise it adds the item to the end. (???)
 837  *
 838  * PARAMS
 839  *  pidl       [I]   ItemIDList to extend
 840  *  item       [I]   ItemID to prepend/append
 841  *  bEnd       [I]   Indicates if the item should be appended
 842  *
 843  * NOTES
 844  *  Destroys the passed in idlist! (???)
 845  */
 846 LPITEMIDLIST WINAPI ILAppend(LPITEMIDLIST pidl, LPCITEMIDLIST item, BOOL bEnd)
 847 {
 848     LPITEMIDLIST idlRet;
 849
 850     WARN("(pidl=%p,pidl=%p,%08u)semi-stub\n",pidl,item,bEnd);
 851
 852     pdump (pidl);
 853     pdump (item);
 854
 855     if (_ILIsDesktop(pidl))
 856     {
 857         idlRet = ILClone(item);
 858         SHFree (pidl);
 859         return idlRet;
 860     }
 861
 862     if (bEnd)
 863         idlRet = ILCombine(pidl, item);
 864     else
 865         idlRet = ILCombine(item, pidl);
 866
 867     SHFree(pidl);
 868     return idlRet;
 869 }
 870
 871 /*************************************************************************
 872  * ILFree                    [SHELL32.155]
 873  *
 874  * Frees memory (if not NULL) allocated by SHMalloc allocator
 875  *
 876  * PARAMS
 877  *  pidl         [I]
 878  *
 879  * RETURNS
 880  *  Nothing
 881  *
 882  * NOTES
 883  *  exported by ordinal
 884  */
 885 void WINAPI ILFree(LPITEMIDLIST pidl)
 886 {
 887     TRACE("(pidl=%p)\n",pidl);
 888     SHFree(pidl);
 889 }
 890
 891 /*************************************************************************
 892  * ILGlobalFree              [SHELL32.156]
 893  *
 894  * Frees memory (if not NULL) allocated by Alloc allocator
 895  *
 896  * PARAMS
 897  *  pidl         [I]
 898  *
 899  * RETURNS
 900  *  Nothing
 901  *
 902  * NOTES
 903  *  exported by ordinal.
 904  */
 905 void WINAPI ILGlobalFree( LPITEMIDLIST pidl)
 906 {
 907     TRACE("%p\n", pidl);
 908
 909     Free(pidl);
 910 }
 911
 912 /*************************************************************************
 913  * ILCreateFromPathA         [SHELL32.189]
 914  *
 915  * Creates a complex ItemIDList from a path and returns it.
 916  *
 917  * PARAMS
 918  *  path         [I]
 919  *
 920  * RETURNS
 921  *  the newly created complex ItemIDList or NULL if failed
 922  *
 923  * NOTES
 924  *  exported by ordinal.
 925  */
 926 LPITEMIDLIST WINAPI ILCreateFromPathA (LPCSTR path)
 927 {
 928     LPITEMIDLIST pidlnew = NULL;
 929
 930     TRACE_(shell)("%s\n", debugstr_a(path));
 931
 932     if (SUCCEEDED(SHILCreateFromPathA(path, &pidlnew, NULL)))
 933         return pidlnew;
 934     return NULL;
 935 }
 936
 937 /*************************************************************************
 938  * ILCreateFromPathW         [SHELL32.190]
 939  *
 940  * See ILCreateFromPathA.
 941  */
 942 LPITEMIDLIST WINAPI ILCreateFromPathW (LPCWSTR path)
 943 {
 944     LPITEMIDLIST pidlnew = NULL;
 945
 946     TRACE_(shell)("%s\n", debugstr_w(path));
 947
 948     if (SUCCEEDED(SHILCreateFromPathW(path, &pidlnew, NULL)))
 949         return pidlnew;
 950     return NULL;
 951 }
 952
 953 /*************************************************************************
 954  * ILCreateFromPath          [SHELL32.157]
 955  */
 956 LPITEMIDLIST WINAPI ILCreateFromPathAW (LPCVOID path)
 957 {
 958     if ( SHELL_OsIsUnicode())
 959         return ILCreateFromPathW (path);
 960     return ILCreateFromPathA (path);
 961 }
 962
 963 /*************************************************************************
 964  * _ILParsePathW             [internal]
 965  *
 966  * Creates an ItemIDList from a path and returns it.
 967  *
 968  * PARAMS
 969  *  path         [I]   path to parse and convert into an ItemIDList
 970  *  lpFindFile   [I]   pointer to buffer to initialize the FileSystem
 971  *                     Bind Data object with
 972  *  bBindCtx     [I]   indicates to create a BindContext and assign a
 973  *                     FileSystem Bind Data object
 974  *  ppidl        [O]   the newly create ItemIDList
 975  *  prgfInOut    [I/O] requested attributes on input and actual
 976  *                     attributes on return
 977  *
 978  * RETURNS
 979  *  NO_ERROR on success or an OLE error code
 980  *
 981  * NOTES
 982  *  If either lpFindFile is non-NULL or bBindCtx is TRUE, this function
 983  *  creates a BindContext object and assigns a FileSystem Bind Data object
 984  *  to it, passing the BindContext to IShellFolder_ParseDisplayName. Each
 985  *  IShellFolder uses that FileSystem Bind Data object of the BindContext
 986  *  to pass data about the current path element to the next object. This
 987  *  is used to avoid having to verify the current path element on disk, so
 988  *  that creating an ItemIDList from a nonexistent path still can work.
 989  */
 990 static HRESULT WINAPI _ILParsePathW(LPCWSTR path, LPWIN32_FIND_DATAW lpFindFile,
 991                              BOOL bBindCtx, LPITEMIDLIST *ppidl, LPDWORD prgfInOut)
 992 {
 993     LPSHELLFOLDER pSF = NULL;
 994     LPBC pBC = NULL;
 995     HRESULT ret;
 996
 997     TRACE("%s %p %d (%p)->%p (%p)->0x%x\n", debugstr_w(path), lpFindFile, bBindCtx,
 998                                              ppidl, ppidl ? *ppidl : NULL,
 999                                              prgfInOut, prgfInOut ? *prgfInOut : 0);
1000
1001     ret = SHGetDesktopFolder(&pSF);
1002     if (FAILED(ret))
1003         return ret;
1004
1005     if (lpFindFile || bBindCtx)
1006         ret = IFileSystemBindData_Constructor(lpFindFile, &pBC);
1007
1008     if (SUCCEEDED(ret))
1009     {
1010         ret = IShellFolder_ParseDisplayName(pSF, 0, pBC, (LPOLESTR)path, NULL, ppidl, prgfInOut);
1011     }
1012
1013     if (pBC)
1014     {
1015         IBindCtx_Release(pBC);
1016         pBC = NULL;
1017     }
1018
1019     IShellFolder_Release(pSF);
1020
1021     if (!SUCCEEDED(ret) && ppidl)
1022         *ppidl = NULL;
1023
1024     TRACE("%s %p 0x%x\n", debugstr_w(path), ppidl ? *ppidl : NULL, prgfInOut ? *prgfInOut : 0);
1025
1026     return ret;
1027 }
1028
1029 /*************************************************************************
1030  * SHSimpleIDListFromPath    [SHELL32.162]
1031  *
1032  * Creates a simple ItemIDList from a path and returns it. This function
1033  * does not fail on nonexistent paths.
1034  *
1035  * PARAMS
1036  *  path         [I]   path to parse and convert into an ItemIDList
1037  *
1038  * RETURNS
1039  *  the newly created simple ItemIDList
1040  *
1041  * NOTES
1042  *  Simple in the name does not mean a relative ItemIDList but rather a
1043  *  fully qualified list, where only the file name is filled in and the
1044  *  directory flag for those ItemID elements this is known about, eg.
1045  *  it is not the last element in the ItemIDList or the actual directory
1046  *  exists on disk.
1047  *  exported by ordinal.
1048  */
1049 LPITEMIDLIST WINAPI SHSimpleIDListFromPathA(LPCSTR lpszPath)
1050 {
1051     LPITEMIDLIST pidl = NULL;
1052     LPWSTR wPath = NULL;
1053     int len;
1054
1055     TRACE("%s\n", debugstr_a(lpszPath));
1056
1057     if (lpszPath)
1058     {
1059         len = MultiByteToWideChar(CP_ACP, 0, lpszPath, -1, NULL, 0);
1060         wPath = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
1061         MultiByteToWideChar(CP_ACP, 0, lpszPath, -1, wPath, len);
1062     }
1063
1064     _ILParsePathW(wPath, NULL, TRUE, &pidl, NULL);
1065
1066     HeapFree(GetProcessHeap(), 0, wPath);
1067     TRACE("%s %p\n", debugstr_a(lpszPath), pidl);
1068     return pidl;
1069 }
1070
1071 LPITEMIDLIST WINAPI SHSimpleIDListFromPathW(LPCWSTR lpszPath)
1072 {
1073     LPITEMIDLIST pidl = NULL;
1074
1075     TRACE("%s\n", debugstr_w(lpszPath));
1076
1077     _ILParsePathW(lpszPath, NULL, TRUE, &pidl, NULL);
1078     TRACE("%s %p\n", debugstr_w(lpszPath), pidl);
1079     return pidl;
1080 }
1081
1082 LPITEMIDLIST WINAPI SHSimpleIDListFromPathAW(LPCVOID lpszPath)
1083 {
1084     if ( SHELL_OsIsUnicode())
1085         return SHSimpleIDListFromPathW (lpszPath);
1086     return SHSimpleIDListFromPathA (lpszPath);
1087 }
1088
1089 /*************************************************************************
1090  * SHGetDataFromIDListA [SHELL32.247]
1091  *
1092  * NOTES
1093  *  the pidl can be a simple one. since we can't get the path out of the pidl
1094  *  we have to take all data from the pidl
1095  */
1096 HRESULT WINAPI SHGetDataFromIDListA(LPSHELLFOLDER psf, LPCITEMIDLIST pidl,
1097                                     int nFormat, LPVOID dest, int len)
1098 {
1099     LPSTR filename, shortname;
1100     WIN32_FIND_DATAA * pfd;
1101
1102     TRACE_(shell)("sf=%p pidl=%p 0x%04x %p 0x%04x stub\n",psf,pidl,nFormat,dest,len);
1103
1104     pdump(pidl);
1105     if (!psf || !dest)
1106         return E_INVALIDARG;
1107
1108     switch (nFormat)
1109     {
1110     case SHGDFIL_FINDDATA:
1111         pfd = dest;
1112
1113         if (_ILIsDrive(pidl) || _ILIsSpecialFolder(pidl))
1114             return E_INVALIDARG;
1115
1116         if (len < sizeof(WIN32_FIND_DATAA))
1117             return E_INVALIDARG;
1118
1119         ZeroMemory(pfd, sizeof (WIN32_FIND_DATAA));
1120         _ILGetFileDateTime( pidl, &(pfd->ftLastWriteTime));
1121         pfd->dwFileAttributes = _ILGetFileAttributes(pidl, NULL, 0);
1122         pfd->nFileSizeLow = _ILGetFileSize ( pidl, NULL, 0);
1123
1124         filename = _ILGetTextPointer(pidl);
1125         shortname = _ILGetSTextPointer(pidl);
1126
1127         if (filename)
1128             lstrcpynA(pfd->cFileName, filename, MAX_PATH);
1129         else
1130             pfd->cFileName[0] = '\0';
1131
1132         if (shortname)
1133             lstrcpynA(pfd->cAlternateFileName, shortname, MAX_PATH);
1134         else
1135             pfd->cAlternateFileName[0] = '\0';
1136         return NOERROR;
1137
1138     case SHGDFIL_NETRESOURCE:
1139     case SHGDFIL_DESCRIPTIONID:
1140         FIXME_(shell)("SHGDFIL %i stub\n", nFormat);
1141         break;
1142
1143     default:
1144         ERR_(shell)("Unknown SHGDFIL %i, please report\n", nFormat);
1145     }
1146
1147     return E_INVALIDARG;
1148 }
1149
1150 /*************************************************************************
1151  * SHGetDataFromIDListW [SHELL32.248]
1152  *
1153  */
1154 HRESULT WINAPI SHGetDataFromIDListW(LPSHELLFOLDER psf, LPCITEMIDLIST pidl,
1155                                     int nFormat, LPVOID dest, int len)
1156 {
1157     LPSTR filename, shortname;
1158     WIN32_FIND_DATAW * pfd = dest;
1159
1160     TRACE_(shell)("sf=%p pidl=%p 0x%04x %p 0x%04x stub\n",psf,pidl,nFormat,dest,len);
1161
1162     pdump(pidl);
1163
1164     if (!psf || !dest)
1165         return E_INVALIDARG;
1166
1167     switch (nFormat)
1168     {
1169     case SHGDFIL_FINDDATA:
1170         pfd = dest;
1171
1172         if (_ILIsDrive(pidl))
1173             return E_INVALIDARG;
1174
1175         if (len < sizeof(WIN32_FIND_DATAW))
1176             return E_INVALIDARG;
1177
1178         ZeroMemory(pfd, sizeof (WIN32_FIND_DATAA));
1179         _ILGetFileDateTime( pidl, &(pfd->ftLastWriteTime));
1180         pfd->dwFileAttributes = _ILGetFileAttributes(pidl, NULL, 0);
1181         pfd->nFileSizeLow = _ILGetFileSize ( pidl, NULL, 0);
1182
1183         filename = _ILGetTextPointer(pidl);
1184         shortname = _ILGetSTextPointer(pidl);
1185
1186         if (!filename)
1187             pfd->cFileName[0] = '\0';
1188         else if (!MultiByteToWideChar(CP_ACP, 0, filename, -1, pfd->cFileName, MAX_PATH))
1189             pfd->cFileName[MAX_PATH-1] = 0;
1190
1191         if (!shortname)
1192             pfd->cAlternateFileName[0] = '\0';
1193         else if (!MultiByteToWideChar(CP_ACP, 0, shortname, -1, pfd->cAlternateFileName, 14))
1194             pfd->cAlternateFileName[13] = 0;
1195         return NOERROR;
1196
1197     case SHGDFIL_NETRESOURCE:
1198     case SHGDFIL_DESCRIPTIONID:
1199         FIXME_(shell)("SHGDFIL %i stub\n", nFormat);
1200         break;
1201
1202     default:
1203         ERR_(shell)("Unknown SHGDFIL %i, please report\n", nFormat);
1204     }
1205
1206     return E_INVALIDARG;
1207 }
1208
1209 /*************************************************************************
1210  * SHGetPathFromIDListA        [SHELL32.@][NT 4.0: SHELL32.220]
1211  *
1212  * PARAMETERS
1213  *  pidl,   [IN] pidl
1214  *  pszPath [OUT] path
1215  *
1216  * RETURNS
1217  *  path from a passed PIDL.
1218  *
1219  * NOTES
1220  *    NULL returns FALSE
1221  *    desktop pidl gives path to desktop directory back
1222  *    special pidls returning FALSE
1223  */
1224 BOOL WINAPI SHGetPathFromIDListA(LPCITEMIDLIST pidl, LPSTR pszPath)
1225 {
1226     WCHAR wszPath[MAX_PATH];
1227     BOOL bSuccess;
1228
1229     bSuccess = SHGetPathFromIDListW(pidl, wszPath);
1230     WideCharToMultiByte(CP_ACP, 0, wszPath, -1, pszPath, MAX_PATH, NULL, NULL);
1231
1232     return bSuccess;
1233 }
1234
1235 /*************************************************************************
1236  * SHGetPathFromIDListW             [SHELL32.@]
1237  *
1238  * See SHGetPathFromIDListA.
1239  */
1240 BOOL WINAPI SHGetPathFromIDListW(LPCITEMIDLIST pidl, LPWSTR pszPath)
1241 {
1242     HRESULT hr;
1243     LPCITEMIDLIST pidlLast;
1244     LPSHELLFOLDER psfFolder;
1245     DWORD dwAttributes;
1246     STRRET strret;
1247
1248     TRACE_(shell)("(pidl=%p,%p)\n", pidl, pszPath);
1249     pdump(pidl);
1250
1251     *pszPath = '\0';
1252     if (!pidl)
1253         return FALSE;
1254
1255     hr = SHBindToParent(pidl, &IID_IShellFolder, (VOID**)&psfFolder, &pidlLast);
1256     if (FAILED(hr)) return FALSE;
1257
1258     dwAttributes = SFGAO_FILESYSTEM;
1259     hr = IShellFolder_GetAttributesOf(psfFolder, 1, &pidlLast, &dwAttributes);
1260     if (FAILED(hr) || !(dwAttributes & SFGAO_FILESYSTEM)) {
1261         IShellFolder_Release(psfFolder);
1262         return FALSE;
1263     }
1264
1265     hr = IShellFolder_GetDisplayNameOf(psfFolder, pidlLast, SHGDN_FORPARSING, &strret);
1266     IShellFolder_Release(psfFolder);
1267     if (FAILED(hr)) return FALSE;
1268
1269     hr = StrRetToBufW(&strret, pidlLast, pszPath, MAX_PATH);
1270
1271     TRACE_(shell)("-- %s, 0x%08x\n",debugstr_w(pszPath), hr);
1272     return SUCCEEDED(hr);
1273 }
1274
1275 /*************************************************************************
1276  *    SHBindToParent        [shell version 5.0]
1277  */
1278 HRESULT WINAPI SHBindToParent(LPCITEMIDLIST pidl, REFIID riid, LPVOID *ppv, LPCITEMIDLIST *ppidlLast)
1279 {
1280     IShellFolder    * psfDesktop;
1281     HRESULT         hr=E_FAIL;
1282
1283     TRACE_(shell)("pidl=%p\n", pidl);
1284     pdump(pidl);
1285
1286     if (!pidl || !ppv)
1287         return E_INVALIDARG;
1288
1289     *ppv = NULL;
1290     if (ppidlLast)
1291         *ppidlLast = NULL;
1292
1293     hr = SHGetDesktopFolder(&psfDesktop);
1294     if (FAILED(hr))
1295         return hr;
1296
1297     if (_ILIsPidlSimple(pidl))
1298     {
1299         /* we are on desktop level */
1300         hr = IShellFolder_QueryInterface(psfDesktop, riid, ppv);
1301     }
1302     else
1303     {
1304         LPITEMIDLIST pidlParent = ILClone(pidl);
1305         ILRemoveLastID(pidlParent);
1306         hr = IShellFolder_BindToObject(psfDesktop, pidlParent, NULL, riid, ppv);
1307         SHFree (pidlParent);
1308     }
1309
1310     IShellFolder_Release(psfDesktop);
1311
1312     if (SUCCEEDED(hr) && ppidlLast)
1313         *ppidlLast = ILFindLastID(pidl);
1314
1315     TRACE_(shell)("-- psf=%p pidl=%p ret=0x%08x\n", *ppv, (ppidlLast)?*ppidlLast:NULL, hr);
1316     return hr;
1317 }
1318
1319 /**************************************************************************
1320  *
1321  *        internal functions
1322  *
1323  *    ### 1. section creating pidls ###
1324  *
1325  *************************************************************************
1326  */
1327 LPITEMIDLIST _ILAlloc(PIDLTYPE type, unsigned int size)
1328 {
1329     LPITEMIDLIST pidlOut = NULL;
1330
1331     pidlOut = SHAlloc(size + 5);
1332     if(pidlOut)
1333     {
1334         LPPIDLDATA pData;
1335         LPITEMIDLIST pidlNext;
1336
1337         ZeroMemory(pidlOut, size + 5);
1338         pidlOut->mkid.cb = size + 3;
1339
1340         pData = _ILGetDataPointer(pidlOut);
1341         if (pData)
1342             pData->type = type;
1343
1344         pidlNext = ILGetNext(pidlOut);
1345         if (pidlNext)
1346             pidlNext->mkid.cb = 0x00;
1347         TRACE("-- (pidl=%p, size=%u)\n", pidlOut, size);
1348     }
1349
1350     return pidlOut;
1351 }
1352
1353 LPITEMIDLIST _ILCreateDesktop(void)
1354 {
1355     LPITEMIDLIST ret;
1356
1357     TRACE("()\n");
1358     ret = SHAlloc(2);
1359     if (ret)
1360         ret->mkid.cb = 0;
1361     return ret;
1362 }
1363
1364 LPITEMIDLIST _ILCreateMyComputer(void)
1365 {
1366     TRACE("()\n");
1367     return _ILCreateGuid(PT_GUID, &CLSID_MyComputer);
1368 }
1369
1370 LPITEMIDLIST _ILCreateMyDocuments(void)
1371 {
1372     TRACE("()\n");
1373     return _ILCreateGuid(PT_GUID, &CLSID_MyDocuments);
1374 }
1375
1376 LPITEMIDLIST _ILCreateIExplore(void)
1377 {
1378     TRACE("()\n");
1379     return _ILCreateGuid(PT_GUID, &CLSID_Internet);
1380 }
1381
1382 LPITEMIDLIST _ILCreateControlPanel(void)
1383 {
1384     LPITEMIDLIST parent = _ILCreateGuid(PT_GUID, &CLSID_MyComputer), ret = NULL;
1385
1386     TRACE("()\n");
1387     if (parent)
1388     {
1389         LPITEMIDLIST cpl = _ILCreateGuid(PT_SHELLEXT, &CLSID_ControlPanel);
1390
1391         if (cpl)
1392         {
1393             ret = ILCombine(parent, cpl);
1394             SHFree(cpl);
1395         }
1396         SHFree(parent);
1397     }
1398     return ret;
1399 }
1400
1401 LPITEMIDLIST _ILCreatePrinters(void)
1402 {
1403     LPITEMIDLIST parent = _ILCreateGuid(PT_GUID, &CLSID_MyComputer), ret = NULL;
1404
1405     TRACE("()\n");
1406     if (parent)
1407     {
1408         LPITEMIDLIST printers = _ILCreateGuid(PT_YAGUID, &CLSID_Printers);
1409
1410         if (printers)
1411         {
1412             ret = ILCombine(parent, printers);
1413             SHFree(printers);
1414         }
1415         SHFree(parent);
1416     }
1417     return ret;
1418 }
1419
1420 LPITEMIDLIST _ILCreateNetwork(void)
1421 {
1422     TRACE("()\n");
1423     return _ILCreateGuid(PT_GUID, &CLSID_NetworkPlaces);
1424 }
1425
1426 LPITEMIDLIST _ILCreateBitBucket(void)
1427 {
1428     TRACE("()\n");
1429     return _ILCreateGuid(PT_GUID, &CLSID_RecycleBin);
1430 }
1431
1432 LPITEMIDLIST _ILCreateNetHood(void)
1433 {
1434     TRACE("()\n");
1435     return _ILCreateGuid(PT_GUID, &CLSID_NetworkPlaces);
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( const WIN32_FIND_DATAW *wfd )
1487 {
1488     char    buff[MAX_PATH + 14 +1]; /* see WIN32_FIND_DATA */
1489     DWORD   len, len1, wlen, alen;
1490     LPITEMIDLIST pidl;
1491     PIDLTYPE type;
1492
1493     if (!wfd)
1494         return NULL;
1495
1496     TRACE("(%s, %s)\n",debugstr_w(wfd->cAlternateFileName), debugstr_w(wfd->cFileName));
1497
1498     /* prepare buffer with both names */
1499     len = WideCharToMultiByte(CP_ACP,0,wfd->cFileName,-1,buff,MAX_PATH,NULL,NULL);
1500     len1 = WideCharToMultiByte(CP_ACP,0,wfd->cAlternateFileName,-1, buff+len, sizeof(buff)-len, NULL, NULL);
1501     alen = len + len1;
1502
1503     type = (wfd->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? PT_FOLDER : PT_VALUE;
1504
1505     wlen = lstrlenW(wfd->cFileName) + 1;
1506     pidl = _ILAlloc(type, FIELD_OFFSET(FileStruct, szNames[alen + (alen & 1)]) +
1507                     FIELD_OFFSET(FileStructW, wszName[wlen]) + sizeof(WORD));
1508     if (pidl)
1509     {
1510         LPPIDLDATA pData = _ILGetDataPointer(pidl);
1511         FileStruct *fs = &pData->u.file;
1512         FileStructW *fsw;
1513         WORD *pOffsetW;
1514
1515         FileTimeToDosDateTime( &wfd->ftLastWriteTime, &fs->uFileDate, &fs->uFileTime);
1516         fs->dwFileSize = wfd->nFileSizeLow;
1517         fs->uFileAttribs = wfd->dwFileAttributes;
1518         memcpy(fs->szNames, buff, alen);
1519
1520         fsw = (FileStructW*)(pData->u.file.szNames + alen + (alen & 0x1));
1521         fsw->cbLen = FIELD_OFFSET(FileStructW, wszName[wlen]) + sizeof(WORD);
1522         FileTimeToDosDateTime( &wfd->ftCreationTime, &fsw->uCreationDate, &fsw->uCreationTime);
1523         FileTimeToDosDateTime( &wfd->ftLastAccessTime, &fsw->uLastAccessDate, &fsw->uLastAccessTime);
1524         memcpy(fsw->wszName, wfd->cFileName, wlen * sizeof(WCHAR));
1525
1526         pOffsetW = (WORD*)((LPBYTE)pidl + pidl->mkid.cb - sizeof(WORD));
1527         *pOffsetW = (LPBYTE)fsw - (LPBYTE)pidl;
1528         TRACE("-- Set Value: %s\n",debugstr_w(fsw->wszName));
1529     }
1530     return pidl;
1531
1532 }
1533
1534 HRESULT _ILCreateFromPathW(LPCWSTR szPath, LPITEMIDLIST* ppidl)
1535 {
1536     HANDLE hFile;
1537     WIN32_FIND_DATAW stffile;
1538
1539     if (!ppidl)
1540         return E_INVALIDARG;
1541
1542     hFile = FindFirstFileW(szPath, &stffile);
1543     if (hFile == INVALID_HANDLE_VALUE)
1544         return HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND);
1545
1546     FindClose(hFile);
1547
1548     *ppidl = _ILCreateFromFindDataW(&stffile);
1549
1550     return *ppidl ? S_OK : E_OUTOFMEMORY;
1551 }
1552
1553 LPITEMIDLIST _ILCreateDrive(LPCWSTR lpszNew)
1554 {
1555     LPITEMIDLIST pidlOut;
1556
1557     TRACE("(%s)\n",debugstr_w(lpszNew));
1558
1559     pidlOut = _ILAlloc(PT_DRIVE, sizeof(DriveStruct));
1560     if (pidlOut)
1561     {
1562         LPSTR pszDest;
1563
1564         pszDest = _ILGetTextPointer(pidlOut);
1565         if (pszDest)
1566         {
1567             strcpy(pszDest, "x:\\");
1568             pszDest[0]=toupperW(lpszNew[0]);
1569             TRACE("-- create Drive: %s\n", debugstr_a(pszDest));
1570         }
1571     }
1572     return pidlOut;
1573 }
1574
1575 /**************************************************************************
1576  *  _ILGetDrive()
1577  *
1578  *  Gets the text for the drive eg. 'c:\'
1579  *
1580  * RETURNS
1581  *  strlen (lpszText)
1582  */
1583 DWORD _ILGetDrive(LPCITEMIDLIST pidl,LPSTR pOut, UINT uSize)
1584 {
1585     TRACE("(%p,%p,%u)\n",pidl,pOut,uSize);
1586
1587     if(_ILIsMyComputer(pidl))
1588         pidl = ILGetNext(pidl);
1589
1590     if (pidl && _ILIsDrive(pidl))
1591         return _ILSimpleGetText(pidl, pOut, uSize);
1592
1593     return 0;
1594 }
1595
1596 /**************************************************************************
1597  *
1598  *    ### 2. section testing pidls ###
1599  *
1600  **************************************************************************
1601  *  _ILIsUnicode()
1602  *  _ILIsDesktop()
1603  *  _ILIsMyComputer()
1604  *  _ILIsSpecialFolder()
1605  *  _ILIsDrive()
1606  *  _ILIsFolder()
1607  *  _ILIsValue()
1608  *  _ILIsPidlSimple()
1609  */
1610 BOOL _ILIsUnicode(LPCITEMIDLIST pidl)
1611 {
1612     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1613
1614     TRACE("(%p)\n",pidl);
1615
1616     return (pidl && lpPData && PT_VALUEW == lpPData->type);
1617 }
1618
1619 BOOL _ILIsDesktop(LPCITEMIDLIST pidl)
1620 {
1621     TRACE("(%p)\n",pidl);
1622
1623     return pidl && pidl->mkid.cb  ? 0 : 1;
1624 }
1625
1626 BOOL _ILIsMyComputer(LPCITEMIDLIST pidl)
1627 {
1628     REFIID iid = _ILGetGUIDPointer(pidl);
1629
1630     TRACE("(%p)\n",pidl);
1631
1632     if (iid)
1633         return IsEqualIID(iid, &CLSID_MyComputer);
1634     return FALSE;
1635 }
1636
1637 BOOL _ILIsSpecialFolder (LPCITEMIDLIST pidl)
1638 {
1639     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1640
1641     TRACE("(%p)\n",pidl);
1642
1643     return (pidl && ( (lpPData && (PT_GUID== lpPData->type || PT_SHELLEXT== lpPData->type || PT_YAGUID == lpPData->type)) ||
1644               (pidl && pidl->mkid.cb == 0x00)
1645             ));
1646 }
1647
1648 BOOL _ILIsDrive(LPCITEMIDLIST pidl)
1649 {
1650     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1651
1652     TRACE("(%p)\n",pidl);
1653
1654     return (pidl && lpPData && (PT_DRIVE == lpPData->type ||
1655                     PT_DRIVE1 == lpPData->type ||
1656                     PT_DRIVE2 == lpPData->type ||
1657                     PT_DRIVE3 == lpPData->type));
1658 }
1659
1660 BOOL _ILIsFolder(LPCITEMIDLIST pidl)
1661 {
1662     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1663
1664     TRACE("(%p)\n",pidl);
1665
1666     return (pidl && lpPData && (PT_FOLDER == lpPData->type || PT_FOLDER1 == lpPData->type));
1667 }
1668
1669 BOOL _ILIsValue(LPCITEMIDLIST pidl)
1670 {
1671     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1672
1673     TRACE("(%p)\n",pidl);
1674
1675     return (pidl && lpPData && PT_VALUE == lpPData->type);
1676 }
1677
1678 BOOL _ILIsCPanelStruct(LPCITEMIDLIST pidl)
1679 {
1680     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1681
1682     TRACE("(%p)\n",pidl);
1683
1684     return (pidl && lpPData && (lpPData->type == 0));
1685 }
1686
1687 /**************************************************************************
1688  *    _ILIsPidlSimple
1689  */
1690 BOOL _ILIsPidlSimple(LPCITEMIDLIST pidl)
1691 {
1692     BOOL ret = TRUE;
1693
1694     if(! _ILIsDesktop(pidl))    /* pidl=NULL or mkid.cb=0 */
1695     {
1696         WORD len = pidl->mkid.cb;
1697         LPCITEMIDLIST pidlnext = (LPCITEMIDLIST) (((const BYTE*)pidl) + len );
1698
1699         if (pidlnext->mkid.cb)
1700             ret = FALSE;
1701     }
1702
1703     TRACE("%s\n", ret ? "Yes" : "No");
1704     return ret;
1705 }
1706
1707 /**************************************************************************
1708  *
1709  *    ### 3. section getting values from pidls ###
1710  */
1711
1712  /**************************************************************************
1713  *  _ILSimpleGetText
1714  *
1715  * gets the text for the first item in the pidl (eg. simple pidl)
1716  *
1717  * returns the length of the string
1718  */
1719 DWORD _ILSimpleGetText (LPCITEMIDLIST pidl, LPSTR szOut, UINT uOutSize)
1720 {
1721     DWORD        dwReturn=0;
1722     LPSTR        szSrc;
1723     LPWSTR       szSrcW;
1724     GUID const * riid;
1725     char szTemp[MAX_PATH];
1726
1727     TRACE("(%p %p %x)\n",pidl,szOut,uOutSize);
1728
1729     if (!pidl)
1730         return 0;
1731
1732     if (szOut)
1733         *szOut = 0;
1734
1735     if (_ILIsDesktop(pidl))
1736     {
1737         /* desktop */
1738         if (HCR_GetClassNameA(&CLSID_ShellDesktop, szTemp, MAX_PATH))
1739         {
1740             if (szOut)
1741                 lstrcpynA(szOut, szTemp, uOutSize);
1742
1743             dwReturn = strlen (szTemp);
1744         }
1745     }
1746     else if (( szSrc = _ILGetTextPointer(pidl) ))
1747     {
1748         /* filesystem */
1749         if (szOut)
1750             lstrcpynA(szOut, szSrc, uOutSize);
1751
1752         dwReturn = strlen(szSrc);
1753     }
1754     else if (( szSrcW = _ILGetTextPointerW(pidl) ))
1755     {
1756         /* unicode filesystem */
1757         WideCharToMultiByte(CP_ACP,0,szSrcW, -1, szTemp, MAX_PATH, NULL, NULL);
1758
1759         if (szOut)
1760             lstrcpynA(szOut, szTemp, uOutSize);
1761
1762         dwReturn = strlen (szTemp);
1763     }
1764     else if (( riid = _ILGetGUIDPointer(pidl) ))
1765     {
1766         /* special folder */
1767         if ( HCR_GetClassNameA(riid, szTemp, MAX_PATH) )
1768         {
1769             if (szOut)
1770                 lstrcpynA(szOut, szTemp, uOutSize);
1771
1772             dwReturn = strlen (szTemp);
1773         }
1774     }
1775     else
1776     {
1777         ERR("-- no text\n");
1778     }
1779
1780     TRACE("-- (%p=%s 0x%08x)\n",szOut,debugstr_a(szOut),dwReturn);
1781     return dwReturn;
1782 }
1783
1784  /**************************************************************************
1785  *  _ILSimpleGetTextW
1786  *
1787  * gets the text for the first item in the pidl (eg. simple pidl)
1788  *
1789  * returns the length of the string
1790  */
1791 DWORD _ILSimpleGetTextW (LPCITEMIDLIST pidl, LPWSTR szOut, UINT uOutSize)
1792 {
1793     DWORD   dwReturn;
1794     FileStructW *pFileStructW = _ILGetFileStructW(pidl);
1795
1796     TRACE("(%p %p %x)\n",pidl,szOut,uOutSize);
1797
1798     if (pFileStructW) {
1799         lstrcpynW(szOut, pFileStructW->wszName, uOutSize);
1800         dwReturn = lstrlenW(pFileStructW->wszName);
1801     } else {
1802         GUID const * riid;
1803         WCHAR szTemp[MAX_PATH];
1804         LPSTR szSrc;
1805         LPWSTR szSrcW;
1806         dwReturn=0;
1807
1808         if (!pidl)
1809             return 0;
1810
1811         if (szOut)
1812             *szOut = 0;
1813
1814         if (_ILIsDesktop(pidl))
1815         {
1816             /* desktop */
1817             if (HCR_GetClassNameW(&CLSID_ShellDesktop, szTemp, MAX_PATH))
1818             {
1819                 if (szOut)
1820                     lstrcpynW(szOut, szTemp, uOutSize);
1821
1822                 dwReturn = lstrlenW (szTemp);
1823             }
1824         }
1825         else if (( szSrcW = _ILGetTextPointerW(pidl) ))
1826         {
1827             /* unicode filesystem */
1828             if (szOut)
1829                 lstrcpynW(szOut, szSrcW, uOutSize);
1830
1831             dwReturn = lstrlenW(szSrcW);
1832         }
1833         else if (( szSrc = _ILGetTextPointer(pidl) ))
1834         {
1835             /* filesystem */
1836             MultiByteToWideChar(CP_ACP, 0, szSrc, -1, szTemp, MAX_PATH);
1837
1838             if (szOut)
1839                 lstrcpynW(szOut, szTemp, uOutSize);
1840
1841             dwReturn = lstrlenW (szTemp);
1842         }
1843         else if (( riid = _ILGetGUIDPointer(pidl) ))
1844         {
1845             /* special folder */
1846             if ( HCR_GetClassNameW(riid, szTemp, MAX_PATH) )
1847             {
1848                 if (szOut)
1849                     lstrcpynW(szOut, szTemp, uOutSize);
1850
1851                 dwReturn = lstrlenW (szTemp);
1852             }
1853         }
1854         else
1855         {
1856             ERR("-- no text\n");
1857         }
1858     }
1859
1860     TRACE("-- (%p=%s 0x%08x)\n",szOut,debugstr_w(szOut),dwReturn);
1861     return dwReturn;
1862 }
1863
1864 /**************************************************************************
1865  *
1866  *    ### 4. getting pointers to parts of pidls ###
1867  *
1868  **************************************************************************
1869  *  _ILGetDataPointer()
1870  */
1871 LPPIDLDATA _ILGetDataPointer(LPCITEMIDLIST pidl)
1872 {
1873     if(pidl && pidl->mkid.cb != 0x00)
1874         return (LPPIDLDATA) &(pidl->mkid.abID);
1875     return NULL;
1876 }
1877
1878 /**************************************************************************
1879  *  _ILGetTextPointerW()
1880  * gets a pointer to the unicode long filename string stored in the pidl
1881  */
1882 LPWSTR _ILGetTextPointerW(LPCITEMIDLIST pidl)
1883 {
1884     /* TRACE(pidl,"(pidl%p)\n", pidl);*/
1885
1886     LPPIDLDATA pdata = _ILGetDataPointer(pidl);
1887
1888     if (!pdata)
1889         return NULL;
1890
1891     switch (pdata->type)
1892     {
1893     case PT_GUID:
1894     case PT_SHELLEXT:
1895     case PT_YAGUID:
1896         return NULL;
1897
1898     case PT_DRIVE:
1899     case PT_DRIVE1:
1900     case PT_DRIVE2:
1901     case PT_DRIVE3:
1902         /*return (LPSTR)&(pdata->u.drive.szDriveName);*/
1903         return NULL;
1904
1905     case PT_FOLDER:
1906     case PT_FOLDER1:
1907     case PT_VALUE:
1908     case PT_IESPECIAL1:
1909     case PT_IESPECIAL2:
1910         /*return (LPSTR)&(pdata->u.file.szNames);*/
1911         return NULL;
1912
1913     case PT_WORKGRP:
1914     case PT_COMP:
1915     case PT_NETWORK:
1916     case PT_NETPROVIDER:
1917     case PT_SHARE:
1918         /*return (LPSTR)&(pdata->u.network.szNames);*/
1919         return NULL;
1920
1921     case PT_VALUEW:
1922         return (LPWSTR)&(pdata->u.file.szNames);
1923     }
1924     return NULL;
1925 }
1926
1927
1928 /**************************************************************************
1929  *  _ILGetTextPointer()
1930  * gets a pointer to the long filename string stored in the pidl
1931  */
1932 LPSTR _ILGetTextPointer(LPCITEMIDLIST pidl)
1933 {
1934     /* TRACE(pidl,"(pidl%p)\n", pidl);*/
1935
1936     LPPIDLDATA pdata = _ILGetDataPointer(pidl);
1937
1938     if (!pdata)
1939         return NULL;
1940
1941     switch (pdata->type)
1942     {
1943     case PT_GUID:
1944     case PT_SHELLEXT:
1945     case PT_YAGUID:
1946         return NULL;
1947
1948     case PT_DRIVE:
1949     case PT_DRIVE1:
1950     case PT_DRIVE2:
1951     case PT_DRIVE3:
1952         return (LPSTR)&(pdata->u.drive.szDriveName);
1953
1954     case PT_FOLDER:
1955     case PT_FOLDER1:
1956     case PT_VALUE:
1957     case PT_IESPECIAL1:
1958     case PT_IESPECIAL2:
1959         return (LPSTR)&(pdata->u.file.szNames);
1960
1961     case PT_WORKGRP:
1962     case PT_COMP:
1963     case PT_NETWORK:
1964     case PT_NETPROVIDER:
1965     case PT_SHARE:
1966         return (LPSTR)&(pdata->u.network.szNames);
1967     }
1968     return NULL;
1969 }
1970
1971 /**************************************************************************
1972  *  _ILGetSTextPointer()
1973  * gets a pointer to the short filename string stored in the pidl
1974  */
1975 LPSTR _ILGetSTextPointer(LPCITEMIDLIST pidl)
1976 {
1977     /* TRACE(pidl,"(pidl%p)\n", pidl); */
1978
1979     LPPIDLDATA pdata =_ILGetDataPointer(pidl);
1980
1981     if (!pdata)
1982         return NULL;
1983
1984     switch (pdata->type)
1985     {
1986     case PT_FOLDER:
1987     case PT_VALUE:
1988     case PT_IESPECIAL1:
1989     case PT_IESPECIAL2:
1990         return (LPSTR)(pdata->u.file.szNames + strlen (pdata->u.file.szNames) + 1);
1991
1992     case PT_WORKGRP:
1993         return (LPSTR)(pdata->u.network.szNames + strlen (pdata->u.network.szNames) + 1);
1994     }
1995     return NULL;
1996 }
1997
1998 /**************************************************************************
1999  * _ILGetGUIDPointer()
2000  *
2001  * returns reference to guid stored in some pidls
2002  */
2003 IID* _ILGetGUIDPointer(LPCITEMIDLIST pidl)
2004 {
2005     LPPIDLDATA pdata =_ILGetDataPointer(pidl);
2006
2007     TRACE("%p\n", pidl);
2008
2009     if (!pdata)
2010         return NULL;
2011
2012     TRACE("pdata->type 0x%04x\n", pdata->type);
2013     switch (pdata->type)
2014     {
2015     case PT_SHELLEXT:
2016     case PT_GUID:
2017     case PT_YAGUID:
2018         return &(pdata->u.guid.guid);
2019
2020     default:
2021         TRACE("Unknown pidl type 0x%04x\n", pdata->type);
2022         break;
2023     }
2024     return NULL;
2025 }
2026
2027 /******************************************************************************
2028  * _ILGetFileStructW [Internal]
2029  *
2030  * Get pointer the a SHITEMID's FileStructW field if present
2031  *
2032  * PARAMS
2033  *  pidl [I] The SHITEMID
2034  *
2035  * RETURNS
2036  *  Success: Pointer to pidl's FileStructW field.
2037  *  Failure: NULL
2038  */
2039 FileStructW* _ILGetFileStructW(LPCITEMIDLIST pidl) {
2040     FileStructW *pFileStructW;
2041     WORD cbOffset;
2042
2043     if (!(_ILIsValue(pidl) || _ILIsFolder(pidl)))
2044         return NULL;
2045
2046     cbOffset = *(const WORD *)((const BYTE *)pidl + pidl->mkid.cb - sizeof(WORD));
2047     pFileStructW = (FileStructW*)((LPBYTE)pidl + cbOffset);
2048
2049     /* Currently I don't see a fool prove way to figure out if a pidl is for sure of WinXP
2050      * style with a FileStructW member. If we switch all our shellfolder-implementations to
2051      * the new format, this won't be a problem. For now, we do as many sanity checks as possible. */
2052     if (cbOffset & 0x1 || /* FileStructW member is word aligned in the pidl */
2053         /* FileStructW is positioned after FileStruct */
2054         cbOffset < sizeof(pidl->mkid.cb) + sizeof(PIDLTYPE) + sizeof(FileStruct) ||
2055         /* There has to be enough space at cbOffset in the pidl to hold FileStructW and cbOffset */
2056         cbOffset > pidl->mkid.cb - sizeof(cbOffset) - sizeof(FileStructW) ||
2057         pidl->mkid.cb != cbOffset + pFileStructW->cbLen)
2058     {
2059         WARN("Invalid pidl format (cbOffset = %d)!\n", cbOffset);
2060         return NULL;
2061     }
2062
2063     return pFileStructW;
2064 }
2065
2066 /*************************************************************************
2067  * _ILGetFileDateTime
2068  *
2069  * Given the ItemIdList, get the FileTime
2070  *
2071  * PARAMS
2072  *      pidl        [I] The ItemIDList
2073  *      pFt         [I] the resulted FILETIME of the file
2074  *
2075  * RETURNS
2076  *     True if Successful
2077  *
2078  * NOTES
2079  *
2080  */
2081 BOOL _ILGetFileDateTime(LPCITEMIDLIST pidl, FILETIME *pFt)
2082 {
2083     LPPIDLDATA pdata = _ILGetDataPointer(pidl);
2084
2085     if (!pdata)
2086         return FALSE;
2087
2088     switch (pdata->type)
2089     {
2090     case PT_FOLDER:
2091     case PT_VALUE:
2092         DosDateTimeToFileTime(pdata->u.file.uFileDate, pdata->u.file.uFileTime, pFt);
2093         break;
2094     default:
2095         return FALSE;
2096     }
2097     return TRUE;
2098 }
2099
2100 BOOL _ILGetFileDate (LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2101 {
2102     FILETIME ft,lft;
2103     SYSTEMTIME time;
2104     BOOL ret;
2105
2106     if (_ILGetFileDateTime( pidl, &ft ))
2107     {
2108         FileTimeToLocalFileTime(&ft, &lft);
2109         FileTimeToSystemTime (&lft, &time);
2110
2111         ret = GetDateFormatA(LOCALE_USER_DEFAULT,DATE_SHORTDATE,&time, NULL,  pOut, uOutSize);
2112         if (ret)
2113         {
2114             /* Append space + time without seconds */
2115             pOut[ret-1] = ' ';
2116             GetTimeFormatA(LOCALE_USER_DEFAULT, TIME_NOSECONDS, &time, NULL, &pOut[ret], uOutSize - ret);
2117         }
2118     }
2119     else
2120     {
2121         pOut[0] = '\0';
2122         ret = FALSE;
2123     }
2124     return ret;
2125 }
2126
2127 /*************************************************************************
2128  * _ILGetFileSize
2129  *
2130  * Given the ItemIdList, get the FileSize
2131  *
2132  * PARAMS
2133  *    pidl     [I] The ItemIDList
2134  *    pOut     [I] The buffer to save the result
2135  *    uOutsize [I] The size of the buffer
2136  *
2137  * RETURNS
2138  *    The FileSize
2139  *
2140  * NOTES
2141  *    pOut can be null when no string is needed
2142  *
2143  */
2144 DWORD _ILGetFileSize (LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2145 {
2146     LPPIDLDATA pdata = _ILGetDataPointer(pidl);
2147     DWORD dwSize;
2148
2149     if (!pdata)
2150         return 0;
2151
2152     switch (pdata->type)
2153     {
2154     case PT_VALUE:
2155         dwSize = pdata->u.file.dwFileSize;
2156         if (pOut)
2157             StrFormatKBSizeA(dwSize, pOut, uOutSize);
2158         return dwSize;
2159     }
2160     if (pOut)
2161         *pOut = 0x00;
2162     return 0;
2163 }
2164
2165 BOOL _ILGetExtension (LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2166 {
2167     char szTemp[MAX_PATH];
2168     const char * pPoint;
2169     LPCITEMIDLIST  pidlTemp=pidl;
2170
2171     TRACE("pidl=%p\n",pidl);
2172
2173     if (!pidl)
2174         return FALSE;
2175
2176     pidlTemp = ILFindLastID(pidl);
2177
2178     if (!_ILIsValue(pidlTemp))
2179         return FALSE;
2180     if (!_ILSimpleGetText(pidlTemp, szTemp, MAX_PATH))
2181         return FALSE;
2182
2183     pPoint = PathFindExtensionA(szTemp);
2184
2185     if (!*pPoint)
2186         return FALSE;
2187
2188     pPoint++;
2189     lstrcpynA(pOut, pPoint, uOutSize);
2190     TRACE("%s\n",pOut);
2191
2192     return TRUE;
2193 }
2194
2195 /*************************************************************************
2196  * _ILGetFileType
2197  *
2198  * Given the ItemIdList, get the file type description
2199  *
2200  * PARAMS
2201  *      pidl        [I] The ItemIDList (simple)
2202  *      pOut        [I] The buffer to save the result
2203  *      uOutsize    [I] The size of the buffer
2204  *
2205  * RETURNS
2206  *    nothing
2207  *
2208  * NOTES
2209  *    This function copies as much as possible into the buffer.
2210  */
2211 void _ILGetFileType(LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2212 {
2213     if(_ILIsValue(pidl))
2214     {
2215         char sTemp[64];
2216
2217         if(uOutSize > 0)
2218             pOut[0] = 0;
2219         if (_ILGetExtension (pidl, sTemp, 64))
2220         {
2221             if (!( HCR_MapTypeToValueA(sTemp, sTemp, 64, TRUE)
2222                 && HCR_MapTypeToValueA(sTemp, pOut, uOutSize, FALSE )))
2223             {
2224                 lstrcpynA (pOut, sTemp, uOutSize - 6);
2225                 strcat (pOut, "-file");
2226             }
2227         }
2228     }
2229     else
2230         lstrcpynA(pOut, "Folder", uOutSize);
2231 }
2232
2233 /*************************************************************************
2234  * _ILGetFileAttributes
2235  *
2236  * Given the ItemIdList, get the Attrib string format
2237  *
2238  * PARAMS
2239  *      pidl        [I] The ItemIDList
2240  *      pOut        [I] The buffer to save the result
2241  *      uOutsize    [I] The size of the Buffer
2242  *
2243  * RETURNS
2244  *     Attributes
2245  *
2246  * FIXME
2247  *  return value 0 in case of error is a valid return value
2248  *
2249  */
2250 DWORD _ILGetFileAttributes(LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2251 {
2252     LPPIDLDATA pData = _ILGetDataPointer(pidl);
2253     WORD wAttrib = 0;
2254     int i;
2255
2256     if (!pData)
2257         return 0;
2258
2259     switch(pData->type)
2260     {
2261     case PT_FOLDER:
2262     case PT_VALUE:
2263         wAttrib = pData->u.file.uFileAttribs;
2264         break;
2265     }
2266
2267     if(uOutSize >= 6)
2268     {
2269         i=0;
2270         if(wAttrib & FILE_ATTRIBUTE_READONLY)
2271             pOut[i++] = 'R';
2272         if(wAttrib & FILE_ATTRIBUTE_HIDDEN)
2273             pOut[i++] = 'H';
2274         if(wAttrib & FILE_ATTRIBUTE_SYSTEM)
2275             pOut[i++] = 'S';
2276         if(wAttrib & FILE_ATTRIBUTE_ARCHIVE)
2277             pOut[i++] = 'A';
2278         if(wAttrib & FILE_ATTRIBUTE_COMPRESSED)
2279             pOut[i++] = 'C';
2280         pOut[i] = 0x00;
2281     }
2282     return wAttrib;
2283 }
2284
2285 /*************************************************************************
2286  * ILFreeaPidl
2287  *
2288  * free a aPidl struct
2289  */
2290 void _ILFreeaPidl(LPITEMIDLIST * apidl, UINT cidl)
2291 {
2292     UINT   i;
2293
2294     if (apidl)
2295     {
2296         for (i = 0; i < cidl; i++)
2297             SHFree(apidl[i]);
2298         SHFree(apidl);
2299     }
2300 }
2301
2302 /*************************************************************************
2303  * ILCopyaPidl
2304  *
2305  * copies an aPidl struct
2306  */
2307 LPITEMIDLIST* _ILCopyaPidl(const LPCITEMIDLIST * apidlsrc, UINT cidl)
2308 {
2309     UINT i;
2310     LPITEMIDLIST *apidldest;
2311
2312     apidldest = SHAlloc(cidl * sizeof(LPITEMIDLIST));
2313     if (!apidlsrc)
2314         return NULL;
2315
2316     for (i = 0; i < cidl; i++)
2317         apidldest[i] = ILClone(apidlsrc[i]);
2318
2319     return apidldest;
2320 }
2321
2322 /*************************************************************************
2323  * _ILCopyCidaToaPidl
2324  *
2325  * creates aPidl from CIDA
2326  */
2327 LPITEMIDLIST* _ILCopyCidaToaPidl(LPITEMIDLIST* pidl, const CIDA * cida)
2328 {
2329     UINT i;
2330     LPITEMIDLIST *dst;
2331
2332     dst = SHAlloc(cida->cidl * sizeof(LPITEMIDLIST));
2333     if (!dst)
2334         return NULL;
2335
2336     if (pidl)
2337         *pidl = ILClone((LPCITEMIDLIST)(&((const BYTE*)cida)[cida->aoffset[0]]));
2338
2339     for (i = 0; i < cida->cidl; i++)
2340         dst[i] = ILClone((LPCITEMIDLIST)(&((const BYTE*)cida)[cida->aoffset[i + 1]]));
2341
2342     return dst;
2343 }