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 relative 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 %x\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     switch (type)
 113     {
 114     case ILGDN_FORPARSING:
 115         flag = SHGDN_FORPARSING | SHGDN_FORADDRESSBAR;
 116         break;
 117     case ILGDN_NORMAL:
 118         flag = SHGDN_NORMAL;
 119         break;
 120     case ILGDN_INFOLDER:
 121         flag = SHGDN_INFOLDER;
 122         break;
 123     default:
 124         FIXME("Unknown type parameter = %x\n", type);
 125         flag = SHGDN_FORPARSING | SHGDN_FORADDRESSBAR;
 126         break;
 127     }
 128
 129     if (!*(const WORD*)pidl || type == ILGDN_FORPARSING)
 130     {
 131         ret = IShellFolder_GetDisplayNameOf(lsf, pidl, flag, &strret);
 132         if (SUCCEEDED(ret))
 133         {
 134             if(!StrRetToStrNW(path, MAX_PATH, &strret, pidl))
 135                 ret = E_FAIL;
 136         }
 137     }
 138     else
 139     {
 140         ret = SHBindToParent(pidl, &IID_IShellFolder, (LPVOID*)&psfParent, &pidllast);
 141         if (SUCCEEDED(ret))
 142         {
 143             ret = IShellFolder_GetDisplayNameOf(psfParent, pidllast, flag, &strret);
 144             if (SUCCEEDED(ret))
 145             {
 146                 if(!StrRetToStrNW(path, MAX_PATH, &strret, pidllast))
 147                     ret = E_FAIL;
 148             }
 149             IShellFolder_Release(psfParent);
 150         }
 151     }
 152
 153     TRACE("%p %p %s\n", psf, pidl, debugstr_w(path));
 154
 155     if (!psf)
 156         IShellFolder_Release(lsf);
 157     return SUCCEEDED(ret);
 158 }
 159
 160 BOOL WINAPI ILGetDisplayNameEx(LPSHELLFOLDER psf, LPCITEMIDLIST pidl, LPVOID path, DWORD type)
 161 {
 162     TRACE_(shell)("%p %p %p %d\n", psf, pidl, path, type);
 163
 164     if (SHELL_OsIsUnicode())
 165         return ILGetDisplayNameExW(psf, pidl, path, type);
 166     return ILGetDisplayNameExA(psf, pidl, path, type);
 167 }
 168
 169 /*************************************************************************
 170  * ILGetDisplayName            [SHELL32.15]
 171  */
 172 BOOL WINAPI ILGetDisplayName(LPCITEMIDLIST pidl, LPVOID path)
 173 {
 174     TRACE_(shell)("%p %p\n", pidl, path);
 175
 176     if (SHELL_OsIsUnicode())
 177         return ILGetDisplayNameExW(NULL, pidl, path, ILGDN_FORPARSING);
 178     return ILGetDisplayNameExA(NULL, pidl, path, ILGDN_FORPARSING);
 179 }
 180
 181 /*************************************************************************
 182  * ILFindLastID [SHELL32.16]
 183  *
 184  * NOTES
 185  *   observed: pidl=Desktop return=pidl
 186  */
 187 LPITEMIDLIST WINAPI ILFindLastID(LPCITEMIDLIST pidl)
 188 {
 189     LPCITEMIDLIST   pidlLast = pidl;
 190
 191     TRACE("(pidl=%p)\n",pidl);
 192
 193     if (!pidl)
 194         return NULL;
 195
 196     while (pidl->mkid.cb)
 197     {
 198         pidlLast = pidl;
 199         pidl = ILGetNext(pidl);
 200     }
 201     return (LPITEMIDLIST)pidlLast;
 202 }
 203
 204 /*************************************************************************
 205  * ILRemoveLastID [SHELL32.17]
 206  *
 207  * NOTES
 208  *   when pidl=Desktop return=FALSE
 209  */
 210 BOOL WINAPI ILRemoveLastID(LPITEMIDLIST pidl)
 211 {
 212     TRACE_(shell)("pidl=%p\n",pidl);
 213
 214     if (!pidl || !pidl->mkid.cb)
 215         return 0;
 216     ILFindLastID(pidl)->mkid.cb = 0;
 217     return 1;
 218 }
 219
 220 /*************************************************************************
 221  * ILClone [SHELL32.18]
 222  *
 223  * NOTES
 224  *    duplicate an idlist
 225  */
 226 LPITEMIDLIST WINAPI ILClone (LPCITEMIDLIST pidl)
 227 {
 228     DWORD    len;
 229     LPITEMIDLIST  newpidl;
 230
 231     if (!pidl)
 232         return NULL;
 233
 234     len = ILGetSize(pidl);
 235     newpidl = (LPITEMIDLIST)SHAlloc(len);
 236     if (newpidl)
 237         memcpy(newpidl,pidl,len);
 238
 239     TRACE("pidl=%p newpidl=%p\n",pidl, newpidl);
 240     pdump(pidl);
 241
 242     return newpidl;
 243 }
 244
 245 /*************************************************************************
 246  * ILCloneFirst [SHELL32.19]
 247  *
 248  * NOTES
 249  *  duplicates the first idlist of a complex pidl
 250  */
 251 LPITEMIDLIST WINAPI ILCloneFirst(LPCITEMIDLIST pidl)
 252 {
 253     DWORD len;
 254     LPITEMIDLIST pidlNew = NULL;
 255
 256     TRACE("pidl=%p\n", pidl);
 257     pdump(pidl);
 258
 259     if (pidl)
 260     {
 261         len = pidl->mkid.cb;
 262         pidlNew = (LPITEMIDLIST) SHAlloc (len+2);
 263         if (pidlNew)
 264         {
 265             memcpy(pidlNew,pidl,len+2);        /* 2 -> mind a desktop pidl */
 266
 267             if (len)
 268                 ILGetNext(pidlNew)->mkid.cb = 0x00;
 269         }
 270     }
 271     TRACE("-- newpidl=%p\n",pidlNew);
 272
 273     return pidlNew;
 274 }
 275
 276 /*************************************************************************
 277  * ILLoadFromStream (SHELL32.26)
 278  *
 279  * NOTES
 280  *   the first two bytes are the len, the pidl is following then
 281  */
 282 HRESULT WINAPI ILLoadFromStream (IStream * pStream, LPITEMIDLIST * ppPidl)
 283 {
 284     WORD        wLen = 0;
 285     DWORD       dwBytesRead;
 286     HRESULT     ret = E_FAIL;
 287
 288
 289     TRACE_(shell)("%p %p\n", pStream ,  ppPidl);
 290
 291     SHFree(*ppPidl);
 292     *ppPidl = NULL;
 293
 294     IStream_AddRef (pStream);
 295
 296     if (SUCCEEDED(IStream_Read(pStream, (LPVOID)&wLen, 2, &dwBytesRead)))
 297     {
 298         TRACE("PIDL length is %d\n", wLen);
 299         if (wLen != 0)
 300         {
 301             *ppPidl = SHAlloc (wLen);
 302             if (SUCCEEDED(IStream_Read(pStream, *ppPidl , wLen, &dwBytesRead)))
 303             {
 304                 TRACE("Stream read OK\n");
 305                 ret = S_OK;
 306             }
 307             else
 308             {
 309                 WARN("reading pidl failed\n");
 310                 SHFree(*ppPidl);
 311                 *ppPidl = NULL;
 312             }
 313         }
 314         else
 315         {
 316             *ppPidl = NULL;
 317             ret = S_OK;
 318         }
 319     }
 320
 321     /* we are not yet fully compatible */
 322     if (*ppPidl && !pcheck(*ppPidl))
 323     {
 324         WARN("Check failed\n");
 325         SHFree(*ppPidl);
 326         *ppPidl = NULL;
 327     }
 328
 329     IStream_Release (pStream);
 330     TRACE("done\n");
 331     return ret;
 332 }
 333
 334 /*************************************************************************
 335  * ILSaveToStream (SHELL32.27)
 336  *
 337  * NOTES
 338  *   the first two bytes are the len, the pidl is following then
 339  */
 340 HRESULT WINAPI ILSaveToStream (IStream * pStream, LPCITEMIDLIST pPidl)
 341 {
 342     WORD        wLen = 0;
 343     HRESULT        ret = E_FAIL;
 344
 345     TRACE_(shell)("%p %p\n", pStream, pPidl);
 346
 347     IStream_AddRef (pStream);
 348
 349     wLen = ILGetSize(pPidl);
 350
 351     if (SUCCEEDED(IStream_Write(pStream, (LPVOID)&wLen, 2, NULL)))
 352     {
 353         if (SUCCEEDED(IStream_Write(pStream, pPidl, wLen, NULL)))
 354             ret = S_OK;
 355     }
 356     IStream_Release (pStream);
 357
 358     return ret;
 359 }
 360
 361 /*************************************************************************
 362  * SHILCreateFromPath        [SHELL32.28]
 363  *
 364  * Create an ItemIDList from a path
 365  *
 366  * PARAMS
 367  *  path       [I]
 368  *  ppidl      [O]
 369  *  attributes [I/O] requested attributes on call and actual attributes when
 370  *                   the function returns
 371  *
 372  * RETURNS
 373  *  NO_ERROR if successful, or an OLE errer code otherwise
 374  *
 375  * NOTES
 376  *  Wrapper for IShellFolder_ParseDisplayName().
 377  */
 378 HRESULT WINAPI SHILCreateFromPathA(LPCSTR path, LPITEMIDLIST * ppidl, DWORD * attributes)
 379 {
 380     WCHAR lpszDisplayName[MAX_PATH];
 381
 382     TRACE_(shell)("%s %p 0x%08x\n", path, ppidl, attributes ? *attributes : 0);
 383
 384     if (!MultiByteToWideChar(CP_ACP, 0, path, -1, lpszDisplayName, MAX_PATH))
 385         lpszDisplayName[MAX_PATH-1] = 0;
 386
 387     return SHILCreateFromPathW(lpszDisplayName, ppidl, attributes);
 388 }
 389
 390 HRESULT WINAPI SHILCreateFromPathW(LPCWSTR path, LPITEMIDLIST * ppidl, DWORD * attributes)
 391 {
 392     LPSHELLFOLDER sf;
 393     DWORD pchEaten;
 394     HRESULT ret = E_FAIL;
 395
 396     TRACE_(shell)("%s %p 0x%08x\n", debugstr_w(path), ppidl, attributes ? *attributes : 0);
 397
 398     if (SUCCEEDED (SHGetDesktopFolder(&sf)))
 399     {
 400         ret = IShellFolder_ParseDisplayName(sf, 0, NULL, (LPWSTR)path, &pchEaten, ppidl, attributes);
 401         IShellFolder_Release(sf);
 402     }
 403     return ret;
 404 }
 405
 406 HRESULT WINAPI SHILCreateFromPathAW (LPCVOID path, LPITEMIDLIST * ppidl, DWORD * attributes)
 407 {
 408     if ( SHELL_OsIsUnicode())
 409         return SHILCreateFromPathW (path, ppidl, attributes);
 410     return SHILCreateFromPathA (path, ppidl, attributes);
 411 }
 412
 413 /*************************************************************************
 414  * SHCloneSpecialIDList      [SHELL32.89]
 415  *
 416  * Create an ItemIDList to one of the special folders.
 417
 418  * PARAMS
 419  *  hwndOwner    [in]
 420  *  nFolder      [in]    CSIDL_xxxxx
 421  *  fCreate      [in]    Create folder if it does not exist
 422  *
 423  * RETURNS
 424  *  Success: The newly created pidl
 425  *  Failure: NULL, if inputs are invalid.
 426  *
 427  * NOTES
 428  *  exported by ordinal.
 429  *  Caller is responsible for deallocating the returned ItemIDList with the
 430  *  shells IMalloc interface, aka ILFree.
 431  */
 432 LPITEMIDLIST WINAPI SHCloneSpecialIDList(HWND hwndOwner, DWORD nFolder, BOOL fCreate)
 433 {
 434     LPITEMIDLIST ppidl;
 435     TRACE_(shell)("(hwnd=%p,csidl=0x%x,%s).\n", hwndOwner, nFolder, fCreate ? "T" : "F");
 436
 437     if (fCreate)
 438         nFolder |= CSIDL_FLAG_CREATE;
 439
 440     SHGetSpecialFolderLocation(hwndOwner, nFolder, &ppidl);
 441     return ppidl;
 442 }
 443
 444 /*************************************************************************
 445  * ILGlobalClone             [SHELL32.20]
 446  *
 447  * Clones an ItemIDList using Alloc.
 448  *
 449  * PARAMS
 450  *  pidl       [I]   ItemIDList to clone
 451  *
 452  * RETURNS
 453  *  Newly allocated ItemIDList.
 454  *
 455  * NOTES
 456  *  exported by ordinal.
 457  */
 458 LPITEMIDLIST WINAPI ILGlobalClone(LPCITEMIDLIST pidl)
 459 {
 460     DWORD    len;
 461     LPITEMIDLIST  newpidl;
 462
 463     if (!pidl)
 464         return NULL;
 465
 466     len = ILGetSize(pidl);
 467     newpidl = (LPITEMIDLIST)Alloc(len);
 468     if (newpidl)
 469         memcpy(newpidl,pidl,len);
 470
 471     TRACE("pidl=%p newpidl=%p\n",pidl, newpidl);
 472     pdump(pidl);
 473
 474     return newpidl;
 475 }
 476
 477 /*************************************************************************
 478  * ILIsEqual [SHELL32.21]
 479  *
 480  */
 481 BOOL WINAPI ILIsEqual(LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 482 {
 483     char    szData1[MAX_PATH];
 484     char    szData2[MAX_PATH];
 485
 486     LPCITEMIDLIST pidltemp1 = pidl1;
 487     LPCITEMIDLIST pidltemp2 = pidl2;
 488
 489     TRACE("pidl1=%p pidl2=%p\n",pidl1, pidl2);
 490
 491     /*
 492      * Explorer reads from registry directly (StreamMRU),
 493      * so we can only check here
 494      */
 495     if (!pcheck(pidl1) || !pcheck (pidl2))
 496         return FALSE;
 497
 498     pdump (pidl1);
 499     pdump (pidl2);
 500
 501     if (!pidl1 || !pidl2)
 502         return FALSE;
 503
 504     while (pidltemp1->mkid.cb && pidltemp2->mkid.cb)
 505     {
 506         _ILSimpleGetText(pidltemp1, szData1, MAX_PATH);
 507         _ILSimpleGetText(pidltemp2, szData2, MAX_PATH);
 508
 509         if (strcasecmp( szData1, szData2 ))
 510             return FALSE;
 511
 512         pidltemp1 = ILGetNext(pidltemp1);
 513         pidltemp2 = ILGetNext(pidltemp2);
 514     }
 515
 516     if (!pidltemp1->mkid.cb && !pidltemp2->mkid.cb)
 517         return TRUE;
 518
 519     return FALSE;
 520 }
 521
 522 /*************************************************************************
 523  * ILIsParent                [SHELL32.23]
 524  *
 525  * Verifies that pidlParent is indeed the (immediate) parent of pidlChild.
 526  *
 527  * PARAMS
 528  *  pidlParent [I]
 529  *  pidlChild  [I]
 530  *  bImmediate [I]   only return true if the parent is the direct parent
 531  *                   of the child
 532  *
 533  * RETURNS
 534  *  True if the parent ItemIDlist is a complete part of the child ItemIdList,
 535  *  False otherwise.
 536  *
 537  * NOTES
 538  *  parent = a/b, child = a/b/c -> true, c is in folder a/b
 539  *  child = a/b/c/d -> false if bImmediate is true, d is not in folder a/b
 540  *  child = a/b/c/d -> true if bImmediate is false, d is in a subfolder of a/b
 541  */
 542 BOOL WINAPI ILIsParent(LPCITEMIDLIST pidlParent, LPCITEMIDLIST pidlChild, BOOL bImmediate)
 543 {
 544     char    szData1[MAX_PATH];
 545     char    szData2[MAX_PATH];
 546     LPCITEMIDLIST pParent = pidlParent;
 547     LPCITEMIDLIST pChild = pidlChild;
 548
 549     TRACE("%p %p %x\n", pidlParent, pidlChild, bImmediate);
 550
 551     if (!pParent || !pChild)
 552         return FALSE;
 553
 554     while (pParent->mkid.cb && pChild->mkid.cb)
 555     {
 556         _ILSimpleGetText(pParent, szData1, MAX_PATH);
 557         _ILSimpleGetText(pChild, szData2, MAX_PATH);
 558
 559         if (strcasecmp( szData1, szData2 ))
 560             return FALSE;
 561
 562         pParent = ILGetNext(pParent);
 563         pChild = ILGetNext(pChild);
 564     }
 565
 566     /* child shorter or has equal length to parent */
 567     if (pParent->mkid.cb || !pChild->mkid.cb)
 568         return FALSE;
 569
 570     /* not immediate descent */
 571     if ( ILGetNext(pChild)->mkid.cb && bImmediate)
 572         return FALSE;
 573
 574     return TRUE;
 575 }
 576
 577 /*************************************************************************
 578  * ILFindChild               [SHELL32.24]
 579  *
 580  *  Compares elements from pidl1 and pidl2.
 581  *
 582  * PARAMS
 583  *  pidl1      [I]
 584  *  pidl2      [I]
 585  *
 586  * RETURNS
 587  *  pidl1 is desktop      pidl2
 588  *  pidl1 shorter pidl2   pointer to first different element of pidl2
 589  *                        if there was at least one equal element
 590  *  pidl2 shorter pidl1   0
 591  *  pidl2 equal pidl1     pointer to last 0x00-element of pidl2
 592  *
 593  * NOTES
 594  *  exported by ordinal.
 595  */
 596 LPITEMIDLIST WINAPI ILFindChild(LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 597 {
 598     char    szData1[MAX_PATH];
 599     char    szData2[MAX_PATH];
 600
 601     LPCITEMIDLIST pidltemp1 = pidl1;
 602     LPCITEMIDLIST pidltemp2 = pidl2;
 603     LPCITEMIDLIST ret=NULL;
 604
 605     TRACE("pidl1=%p pidl2=%p\n",pidl1, pidl2);
 606
 607     /* explorer reads from registry directly (StreamMRU),
 608        so we can only check here */
 609     if ((!pcheck (pidl1)) || (!pcheck (pidl2)))
 610         return FALSE;
 611
 612     pdump (pidl1);
 613     pdump (pidl2);
 614
 615     if (_ILIsDesktop(pidl1))
 616     {
 617         ret = pidl2;
 618     }
 619     else
 620     {
 621         while (pidltemp1->mkid.cb && pidltemp2->mkid.cb)
 622         {
 623             _ILSimpleGetText(pidltemp1, szData1, MAX_PATH);
 624             _ILSimpleGetText(pidltemp2, szData2, MAX_PATH);
 625
 626             if (strcasecmp(szData1,szData2))
 627                 break;
 628
 629             pidltemp1 = ILGetNext(pidltemp1);
 630             pidltemp2 = ILGetNext(pidltemp2);
 631             ret = pidltemp2;
 632         }
 633
 634         if (pidltemp1->mkid.cb)
 635             ret = NULL; /* elements of pidl1 left*/
 636     }
 637     TRACE_(shell)("--- %p\n", ret);
 638     return (LPITEMIDLIST)ret; /* pidl 1 is shorter */
 639 }
 640
 641 /*************************************************************************
 642  * ILCombine                 [SHELL32.25]
 643  *
 644  * Concatenates two complex ItemIDLists.
 645  *
 646  * PARAMS
 647  *  pidl1      [I]   first complex ItemIDLists
 648  *  pidl2      [I]   complex ItemIDLists to append
 649  *
 650  * RETURNS
 651  *  if both pidl's == NULL      NULL
 652  *  if pidl1 == NULL            cloned pidl2
 653  *  if pidl2 == NULL            cloned pidl1
 654  *  otherwise new pidl with pidl2 appended to pidl1
 655  *
 656  * NOTES
 657  *  exported by ordinal.
 658  *  Does not destroy the passed in ItemIDLists!
 659  */
 660 LPITEMIDLIST WINAPI ILCombine(LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
 661 {
 662     DWORD    len1,len2;
 663     LPITEMIDLIST  pidlNew;
 664
 665     TRACE("pidl=%p pidl=%p\n",pidl1,pidl2);
 666
 667     if (!pidl1 && !pidl2) return NULL;
 668
 669     pdump (pidl1);
 670     pdump (pidl2);
 671
 672     if (!pidl1)
 673     {
 674         pidlNew = ILClone(pidl2);
 675         return pidlNew;
 676     }
 677
 678     if (!pidl2)
 679     {
 680         pidlNew = ILClone(pidl1);
 681         return pidlNew;
 682     }
 683
 684     len1  = ILGetSize(pidl1)-2;
 685     len2  = ILGetSize(pidl2);
 686     pidlNew  = SHAlloc(len1+len2);
 687
 688     if (pidlNew)
 689     {
 690         memcpy(pidlNew,pidl1,len1);
 691         memcpy(((BYTE *)pidlNew)+len1,pidl2,len2);
 692     }
 693
 694     /*  TRACE(pidl,"--new pidl=%p\n",pidlNew);*/
 695     return pidlNew;
 696 }
 697
 698 /*************************************************************************
 699  *  SHGetRealIDL [SHELL32.98]
 700  *
 701  * NOTES
 702  */
 703 HRESULT WINAPI SHGetRealIDL(LPSHELLFOLDER lpsf, LPCITEMIDLIST pidlSimple, LPITEMIDLIST *pidlReal)
 704 {
 705     IDataObject* pDataObj;
 706     HRESULT hr;
 707
 708     hr = IShellFolder_GetUIObjectOf(lpsf, 0, 1, &pidlSimple,
 709                              &IID_IDataObject, 0, (LPVOID*)&pDataObj);
 710     if (SUCCEEDED(hr))
 711     {
 712         STGMEDIUM medium;
 713         FORMATETC fmt;
 714
 715         fmt.cfFormat = RegisterClipboardFormatW(CFSTR_SHELLIDLISTW);
 716         fmt.ptd = NULL;
 717         fmt.dwAspect = DVASPECT_CONTENT;
 718         fmt.lindex = -1;
 719         fmt.tymed = TYMED_HGLOBAL;
 720
 721         hr = IDataObject_GetData(pDataObj, &fmt, &medium);
 722
 723         IDataObject_Release(pDataObj);
 724
 725         if (SUCCEEDED(hr))
 726         {
 727             /*assert(pida->cidl==1);*/
 728             LPIDA pida = (LPIDA)GlobalLock(medium.u.hGlobal);
 729
 730             LPCITEMIDLIST pidl_folder = (LPCITEMIDLIST) ((LPBYTE)pida+pida->aoffset[0]);
 731             LPCITEMIDLIST pidl_child = (LPCITEMIDLIST) ((LPBYTE)pida+pida->aoffset[1]);
 732
 733             *pidlReal = ILCombine(pidl_folder, pidl_child);
 734
 735             if (!*pidlReal)
 736                 hr = E_OUTOFMEMORY;
 737
 738             GlobalUnlock(medium.u.hGlobal);
 739             GlobalFree(medium.u.hGlobal);
 740         }
 741     }
 742
 743     return hr;
 744 }
 745
 746 /*************************************************************************
 747  *  SHLogILFromFSIL [SHELL32.95]
 748  *
 749  * NOTES
 750  *  pild = CSIDL_DESKTOP    ret = 0
 751  *  pild = CSIDL_DRIVES     ret = 0
 752  */
 753 LPITEMIDLIST WINAPI SHLogILFromFSIL(LPITEMIDLIST pidl)
 754 {
 755     FIXME("(pidl=%p)\n",pidl);
 756
 757     pdump(pidl);
 758
 759     return 0;
 760 }
 761
 762 /*************************************************************************
 763  * ILGetSize                 [SHELL32.152]
 764  *
 765  * Gets the byte size of an ItemIDList including zero terminator
 766  *
 767  * PARAMS
 768  *  pidl       [I]   ItemIDList
 769  *
 770  * RETURNS
 771  *  size of pidl in bytes
 772  *
 773  * NOTES
 774  *  exported by ordinal
 775  */
 776 UINT WINAPI ILGetSize(LPCITEMIDLIST pidl)
 777 {
 778     LPCSHITEMID si = &(pidl->mkid);
 779     UINT len=0;
 780
 781     if (pidl)
 782     {
 783         while (si->cb)
 784         {
 785             len += si->cb;
 786             si  = (LPCSHITEMID)(((const BYTE*)si)+si->cb);
 787         }
 788         len += 2;
 789     }
 790     TRACE("pidl=%p size=%u\n",pidl, len);
 791     return len;
 792 }
 793
 794 /*************************************************************************
 795  * ILGetNext                 [SHELL32.153]
 796  *
 797  * Gets the next ItemID of an ItemIDList
 798  *
 799  * PARAMS
 800  *  pidl       [I]   ItemIDList
 801  *
 802  * RETURNS
 803  *  null -> null
 804  *  desktop -> null
 805  *  simple pidl -> pointer to 0x0000 element
 806  *
 807  * NOTES
 808  *  exported by ordinal.
 809  */
 810 LPITEMIDLIST WINAPI ILGetNext(LPCITEMIDLIST pidl)
 811 {
 812     WORD len;
 813
 814     TRACE("%p\n", pidl);
 815
 816     if (pidl)
 817     {
 818         len =  pidl->mkid.cb;
 819         if (len)
 820         {
 821             pidl = (LPCITEMIDLIST) (((const BYTE*)pidl)+len);
 822             TRACE("-- %p\n", pidl);
 823             return (LPITEMIDLIST)pidl;
 824         }
 825     }
 826     return NULL;
 827 }
 828
 829 /*************************************************************************
 830  * ILAppend                  [SHELL32.154]
 831  *
 832  * Adds the single ItemID item to the ItemIDList indicated by pidl.
 833  * If bEnd is FALSE, inserts the item in the front of the list,
 834  * otherwise it adds the item to the end. (???)
 835  *
 836  * PARAMS
 837  *  pidl       [I]   ItemIDList to extend
 838  *  item       [I]   ItemID to prepend/append
 839  *  bEnd       [I]   Indicates if the item should be appended
 840  *
 841  * NOTES
 842  *  Destroys the passed in idlist! (???)
 843  */
 844 LPITEMIDLIST WINAPI ILAppend(LPITEMIDLIST pidl, LPCITEMIDLIST item, BOOL bEnd)
 845 {
 846     LPITEMIDLIST idlRet;
 847
 848     WARN("(pidl=%p,pidl=%p,%08u)semi-stub\n",pidl,item,bEnd);
 849
 850     pdump (pidl);
 851     pdump (item);
 852
 853     if (_ILIsDesktop(pidl))
 854     {
 855         idlRet = ILClone(item);
 856         SHFree (pidl);
 857         return idlRet;
 858     }
 859
 860     if (bEnd)
 861         idlRet = ILCombine(pidl, item);
 862     else
 863         idlRet = ILCombine(item, pidl);
 864
 865     SHFree(pidl);
 866     return idlRet;
 867 }
 868
 869 /*************************************************************************
 870  * ILFree                    [SHELL32.155]
 871  *
 872  * Frees memory (if not NULL) allocated by SHMalloc allocator
 873  *
 874  * PARAMS
 875  *  pidl         [I]
 876  *
 877  * RETURNS
 878  *  Nothing
 879  *
 880  * NOTES
 881  *  exported by ordinal
 882  */
 883 void WINAPI ILFree(LPITEMIDLIST pidl)
 884 {
 885     TRACE("(pidl=%p)\n",pidl);
 886     SHFree(pidl);
 887 }
 888
 889 /*************************************************************************
 890  * ILGlobalFree              [SHELL32.156]
 891  *
 892  * Frees memory (if not NULL) allocated by Alloc allocator
 893  *
 894  * PARAMS
 895  *  pidl         [I]
 896  *
 897  * RETURNS
 898  *  Nothing
 899  *
 900  * NOTES
 901  *  exported by ordinal.
 902  */
 903 void WINAPI ILGlobalFree( LPITEMIDLIST pidl)
 904 {
 905     TRACE("%p\n", pidl);
 906
 907     Free(pidl);
 908 }
 909
 910 /*************************************************************************
 911  * ILCreateFromPathA         [SHELL32.189]
 912  *
 913  * Creates a complex ItemIDList from a path and returns it.
 914  *
 915  * PARAMS
 916  *  path         [I]
 917  *
 918  * RETURNS
 919  *  the newly created complex ItemIDList or NULL if failed
 920  *
 921  * NOTES
 922  *  exported by ordinal.
 923  */
 924 LPITEMIDLIST WINAPI ILCreateFromPathA (LPCSTR path)
 925 {
 926     LPITEMIDLIST pidlnew = NULL;
 927
 928     TRACE_(shell)("%s\n", debugstr_a(path));
 929
 930     if (SUCCEEDED(SHILCreateFromPathA(path, &pidlnew, NULL)))
 931         return pidlnew;
 932     return NULL;
 933 }
 934
 935 /*************************************************************************
 936  * ILCreateFromPathW         [SHELL32.190]
 937  *
 938  * See ILCreateFromPathA.
 939  */
 940 LPITEMIDLIST WINAPI ILCreateFromPathW (LPCWSTR path)
 941 {
 942     LPITEMIDLIST pidlnew = NULL;
 943
 944     TRACE_(shell)("%s\n", debugstr_w(path));
 945
 946     if (SUCCEEDED(SHILCreateFromPathW(path, &pidlnew, NULL)))
 947         return pidlnew;
 948     return NULL;
 949 }
 950
 951 /*************************************************************************
 952  * ILCreateFromPath          [SHELL32.157]
 953  */
 954 LPITEMIDLIST WINAPI ILCreateFromPathAW (LPCVOID path)
 955 {
 956     if ( SHELL_OsIsUnicode())
 957         return ILCreateFromPathW (path);
 958     return ILCreateFromPathA (path);
 959 }
 960
 961 /*************************************************************************
 962  * _ILParsePathW             [internal]
 963  *
 964  * Creates an ItemIDList from a path and returns it.
 965  *
 966  * PARAMS
 967  *  path         [I]   path to parse and convert into an ItemIDList
 968  *  lpFindFile   [I]   pointer to buffer to initialize the FileSystem
 969  *                     Bind Data object with
 970  *  bBindCtx     [I]   indicates to create a BindContext and assign a
 971  *                     FileSystem Bind Data object
 972  *  ppidl        [O]   the newly create ItemIDList
 973  *  prgfInOut    [I/O] requested attributes on input and actual
 974  *                     attributes on return
 975  *
 976  * RETURNS
 977  *  NO_ERROR on success or an OLE error code
 978  *
 979  * NOTES
 980  *  If either lpFindFile is non-NULL or bBindCtx is TRUE, this function
 981  *  creates a BindContext object and assigns a FileSystem Bind Data object
 982  *  to it, passing the BindContext to IShellFolder_ParseDisplayName. Each
 983  *  IShellFolder uses that FileSystem Bind Data object of the BindContext
 984  *  to pass data about the current path element to the next object. This
 985  *  is used to avoid having to verify the current path element on disk, so
 986  *  that creating an ItemIDList from a nonexistent path still can work.
 987  */
 988 static HRESULT WINAPI _ILParsePathW(LPCWSTR path, LPWIN32_FIND_DATAW lpFindFile,
 989                              BOOL bBindCtx, LPITEMIDLIST *ppidl, LPDWORD prgfInOut)
 990 {
 991     LPSHELLFOLDER pSF = NULL;
 992     LPBC pBC = NULL;
 993     HRESULT ret;
 994
 995     TRACE("%s %p %d (%p)->%p (%p)->0x%x\n", debugstr_w(path), lpFindFile, bBindCtx,
 996                                              ppidl, ppidl ? *ppidl : NULL,
 997                                              prgfInOut, prgfInOut ? *prgfInOut : 0);
 998
 999     ret = SHGetDesktopFolder(&pSF);
1000     if (FAILED(ret))
1001         return ret;
1002
1003     if (lpFindFile || bBindCtx)
1004         ret = IFileSystemBindData_Constructor(lpFindFile, &pBC);
1005
1006     if (SUCCEEDED(ret))
1007     {
1008         ret = IShellFolder_ParseDisplayName(pSF, 0, pBC, (LPOLESTR)path, NULL, ppidl, prgfInOut);
1009     }
1010
1011     if (pBC)
1012     {
1013         IBindCtx_Release(pBC);
1014         pBC = NULL;
1015     }
1016
1017     IShellFolder_Release(pSF);
1018
1019     if (!SUCCEEDED(ret) && ppidl)
1020         *ppidl = NULL;
1021
1022     TRACE("%s %p 0x%x\n", debugstr_w(path), ppidl ? *ppidl : NULL, prgfInOut ? *prgfInOut : 0);
1023
1024     return ret;
1025 }
1026
1027 /*************************************************************************
1028  * SHSimpleIDListFromPath    [SHELL32.162]
1029  *
1030  * Creates a simple ItemIDList from a path and returns it. This function
1031  * does not fail on nonexistent paths.
1032  *
1033  * PARAMS
1034  *  path         [I]   path to parse and convert into an ItemIDList
1035  *
1036  * RETURNS
1037  *  the newly created simple ItemIDList
1038  *
1039  * NOTES
1040  *  Simple in the name does not mean a relative ItemIDList but rather a
1041  *  fully qualified list, where only the file name is filled in and the
1042  *  directory flag for those ItemID elements this is known about, eg.
1043  *  it is not the last element in the ItemIDList or the actual directory
1044  *  exists on disk.
1045  *  exported by ordinal.
1046  */
1047 LPITEMIDLIST WINAPI SHSimpleIDListFromPathA(LPCSTR lpszPath)
1048 {
1049     LPITEMIDLIST pidl = NULL;
1050     LPWSTR wPath = NULL;
1051     int len;
1052
1053     TRACE("%s\n", debugstr_a(lpszPath));
1054
1055     if (lpszPath)
1056     {
1057         len = MultiByteToWideChar(CP_ACP, 0, lpszPath, -1, NULL, 0);
1058         wPath = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
1059         MultiByteToWideChar(CP_ACP, 0, lpszPath, -1, wPath, len);
1060     }
1061
1062     _ILParsePathW(wPath, NULL, TRUE, &pidl, NULL);
1063
1064     HeapFree(GetProcessHeap(), 0, wPath);
1065     TRACE("%s %p\n", debugstr_a(lpszPath), pidl);
1066     return pidl;
1067 }
1068
1069 LPITEMIDLIST WINAPI SHSimpleIDListFromPathW(LPCWSTR lpszPath)
1070 {
1071     LPITEMIDLIST pidl = NULL;
1072
1073     TRACE("%s\n", debugstr_w(lpszPath));
1074
1075     _ILParsePathW(lpszPath, NULL, TRUE, &pidl, NULL);
1076     TRACE("%s %p\n", debugstr_w(lpszPath), pidl);
1077     return pidl;
1078 }
1079
1080 LPITEMIDLIST WINAPI SHSimpleIDListFromPathAW(LPCVOID lpszPath)
1081 {
1082     if ( SHELL_OsIsUnicode())
1083         return SHSimpleIDListFromPathW (lpszPath);
1084     return SHSimpleIDListFromPathA (lpszPath);
1085 }
1086
1087 /*************************************************************************
1088  * SHGetDataFromIDListA [SHELL32.247]
1089  *
1090  * NOTES
1091  *  the pidl can be a simple one. since we can't get the path out of the pidl
1092  *  we have to take all data from the pidl
1093  */
1094 HRESULT WINAPI SHGetDataFromIDListA(LPSHELLFOLDER psf, LPCITEMIDLIST pidl,
1095                                     int nFormat, LPVOID dest, int len)
1096 {
1097     LPSTR filename, shortname;
1098     WIN32_FIND_DATAA * pfd;
1099
1100     TRACE_(shell)("sf=%p pidl=%p 0x%04x %p 0x%04x stub\n",psf,pidl,nFormat,dest,len);
1101
1102     pdump(pidl);
1103     if (!psf || !dest)
1104         return E_INVALIDARG;
1105
1106     switch (nFormat)
1107     {
1108     case SHGDFIL_FINDDATA:
1109         pfd = dest;
1110
1111         if (_ILIsDrive(pidl) || _ILIsSpecialFolder(pidl))
1112             return E_INVALIDARG;
1113
1114         if (len < sizeof(WIN32_FIND_DATAA))
1115             return E_INVALIDARG;
1116
1117         ZeroMemory(pfd, sizeof (WIN32_FIND_DATAA));
1118         _ILGetFileDateTime( pidl, &(pfd->ftLastWriteTime));
1119         pfd->dwFileAttributes = _ILGetFileAttributes(pidl, NULL, 0);
1120         pfd->nFileSizeLow = _ILGetFileSize ( pidl, NULL, 0);
1121
1122         filename = _ILGetTextPointer(pidl);
1123         shortname = _ILGetSTextPointer(pidl);
1124
1125         if (filename)
1126             lstrcpynA(pfd->cFileName, filename, sizeof(pfd->cFileName));
1127         else
1128             pfd->cFileName[0] = '\0';
1129
1130         if (shortname)
1131             lstrcpynA(pfd->cAlternateFileName, shortname, sizeof(pfd->cAlternateFileName));
1132         else
1133             pfd->cAlternateFileName[0] = '\0';
1134         return NOERROR;
1135
1136     case SHGDFIL_NETRESOURCE:
1137     case SHGDFIL_DESCRIPTIONID:
1138         FIXME_(shell)("SHGDFIL %i stub\n", nFormat);
1139         break;
1140
1141     default:
1142         ERR_(shell)("Unknown SHGDFIL %i, please report\n", nFormat);
1143     }
1144
1145     return E_INVALIDARG;
1146 }
1147
1148 /*************************************************************************
1149  * SHGetDataFromIDListW [SHELL32.248]
1150  *
1151  */
1152 HRESULT WINAPI SHGetDataFromIDListW(LPSHELLFOLDER psf, LPCITEMIDLIST pidl,
1153                                     int nFormat, LPVOID dest, int len)
1154 {
1155     LPSTR filename, shortname;
1156     WIN32_FIND_DATAW * pfd = dest;
1157
1158     TRACE_(shell)("sf=%p pidl=%p 0x%04x %p 0x%04x stub\n",psf,pidl,nFormat,dest,len);
1159
1160     pdump(pidl);
1161
1162     if (!psf || !dest)
1163         return E_INVALIDARG;
1164
1165     switch (nFormat)
1166     {
1167     case SHGDFIL_FINDDATA:
1168         pfd = dest;
1169
1170         if (_ILIsDrive(pidl))
1171             return E_INVALIDARG;
1172
1173         if (len < sizeof(WIN32_FIND_DATAW))
1174             return E_INVALIDARG;
1175
1176         ZeroMemory(pfd, sizeof (WIN32_FIND_DATAA));
1177         _ILGetFileDateTime( pidl, &(pfd->ftLastWriteTime));
1178         pfd->dwFileAttributes = _ILGetFileAttributes(pidl, NULL, 0);
1179         pfd->nFileSizeLow = _ILGetFileSize ( pidl, NULL, 0);
1180
1181         filename = _ILGetTextPointer(pidl);
1182         shortname = _ILGetSTextPointer(pidl);
1183
1184         if (!filename)
1185             pfd->cFileName[0] = '\0';
1186         else if (!MultiByteToWideChar(CP_ACP, 0, filename, -1, pfd->cFileName, MAX_PATH))
1187             pfd->cFileName[MAX_PATH-1] = 0;
1188
1189         if (!shortname)
1190             pfd->cAlternateFileName[0] = '\0';
1191         else if (!MultiByteToWideChar(CP_ACP, 0, shortname, -1, pfd->cAlternateFileName, 14))
1192             pfd->cAlternateFileName[13] = 0;
1193         return NOERROR;
1194
1195     case SHGDFIL_NETRESOURCE:
1196     case SHGDFIL_DESCRIPTIONID:
1197         FIXME_(shell)("SHGDFIL %i stub\n", nFormat);
1198         break;
1199
1200     default:
1201         ERR_(shell)("Unknown SHGDFIL %i, please report\n", nFormat);
1202     }
1203
1204     return E_INVALIDARG;
1205 }
1206
1207 /*************************************************************************
1208  * SHGetPathFromIDListA        [SHELL32.@][NT 4.0: SHELL32.220]
1209  *
1210  * PARAMETERS
1211  *  pidl,   [IN] pidl
1212  *  pszPath [OUT] path
1213  *
1214  * RETURNS
1215  *  path from a passed PIDL.
1216  *
1217  * NOTES
1218  *    NULL returns FALSE
1219  *    desktop pidl gives path to desktop directory back
1220  *    special pidls returning FALSE
1221  */
1222 BOOL WINAPI SHGetPathFromIDListA(LPCITEMIDLIST pidl, LPSTR pszPath)
1223 {
1224     WCHAR wszPath[MAX_PATH];
1225     BOOL bSuccess;
1226
1227     bSuccess = SHGetPathFromIDListW(pidl, wszPath);
1228     WideCharToMultiByte(CP_ACP, 0, wszPath, -1, pszPath, MAX_PATH, NULL, NULL);
1229
1230     return bSuccess;
1231 }
1232
1233 /*************************************************************************
1234  * SHGetPathFromIDListW             [SHELL32.@]
1235  *
1236  * See SHGetPathFromIDListA.
1237  */
1238 BOOL WINAPI SHGetPathFromIDListW(LPCITEMIDLIST pidl, LPWSTR pszPath)
1239 {
1240     HRESULT hr;
1241     LPCITEMIDLIST pidlLast;
1242     LPSHELLFOLDER psfFolder;
1243     DWORD dwAttributes;
1244     STRRET strret;
1245
1246     TRACE_(shell)("(pidl=%p,%p)\n", pidl, pszPath);
1247     pdump(pidl);
1248
1249     *pszPath = '\0';
1250     if (!pidl)
1251         return FALSE;
1252
1253     hr = SHBindToParent(pidl, &IID_IShellFolder, (VOID**)&psfFolder, &pidlLast);
1254     if (FAILED(hr)) return FALSE;
1255
1256     dwAttributes = SFGAO_FILESYSTEM;
1257     hr = IShellFolder_GetAttributesOf(psfFolder, 1, &pidlLast, &dwAttributes);
1258     if (FAILED(hr) || !(dwAttributes & SFGAO_FILESYSTEM)) {
1259         IShellFolder_Release(psfFolder);
1260         return FALSE;
1261     }
1262
1263     hr = IShellFolder_GetDisplayNameOf(psfFolder, pidlLast, SHGDN_FORPARSING, &strret);
1264     IShellFolder_Release(psfFolder);
1265     if (FAILED(hr)) return FALSE;
1266
1267     hr = StrRetToBufW(&strret, pidlLast, pszPath, MAX_PATH);
1268
1269     TRACE_(shell)("-- %s, 0x%08x\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    * psfDesktop;
1279     HRESULT         hr=E_FAIL;
1280
1281     TRACE_(shell)("pidl=%p\n", pidl);
1282     pdump(pidl);
1283
1284     if (!pidl || !ppv)
1285         return E_INVALIDARG;
1286
1287     *ppv = NULL;
1288     if (ppidlLast)
1289         *ppidlLast = NULL;
1290
1291     hr = SHGetDesktopFolder(&psfDesktop);
1292     if (FAILED(hr))
1293         return hr;
1294
1295     if (_ILIsPidlSimple(pidl))
1296     {
1297         /* we are on desktop level */
1298         hr = IShellFolder_QueryInterface(psfDesktop, riid, ppv);
1299     }
1300     else
1301     {
1302         LPITEMIDLIST pidlParent = ILClone(pidl);
1303         ILRemoveLastID(pidlParent);
1304         hr = IShellFolder_BindToObject(psfDesktop, pidlParent, NULL, riid, ppv);
1305         SHFree (pidlParent);
1306     }
1307
1308     IShellFolder_Release(psfDesktop);
1309
1310     if (SUCCEEDED(hr) && ppidlLast)
1311         *ppidlLast = ILFindLastID(pidl);
1312
1313     TRACE_(shell)("-- psf=%p pidl=%p ret=0x%08x\n", *ppv, (ppidlLast)?*ppidlLast:NULL, hr);
1314     return hr;
1315 }
1316
1317 /**************************************************************************
1318  *
1319  *        internal functions
1320  *
1321  *    ### 1. section creating pidls ###
1322  *
1323  *************************************************************************
1324  */
1325 LPITEMIDLIST _ILAlloc(PIDLTYPE type, unsigned int size)
1326 {
1327     LPITEMIDLIST pidlOut = NULL;
1328
1329     pidlOut = SHAlloc(size + 5);
1330     if(pidlOut)
1331     {
1332         LPPIDLDATA pData;
1333         LPITEMIDLIST pidlNext;
1334
1335         ZeroMemory(pidlOut, size + 5);
1336         pidlOut->mkid.cb = size + 3;
1337
1338         pData = _ILGetDataPointer(pidlOut);
1339         if (pData)
1340             pData->type = type;
1341
1342         pidlNext = ILGetNext(pidlOut);
1343         if (pidlNext)
1344             pidlNext->mkid.cb = 0x00;
1345         TRACE("-- (pidl=%p, size=%u)\n", pidlOut, size);
1346     }
1347
1348     return pidlOut;
1349 }
1350
1351 LPITEMIDLIST _ILCreateDesktop(void)
1352 {
1353     LPITEMIDLIST ret;
1354
1355     TRACE("()\n");
1356     ret = SHAlloc(2);
1357     if (ret)
1358         ret->mkid.cb = 0;
1359     return ret;
1360 }
1361
1362 LPITEMIDLIST _ILCreateMyComputer(void)
1363 {
1364     TRACE("()\n");
1365     return _ILCreateGuid(PT_GUID, &CLSID_MyComputer);
1366 }
1367
1368 LPITEMIDLIST _ILCreateMyDocuments(void)
1369 {
1370     TRACE("()\n");
1371     return _ILCreateGuid(PT_GUID, &CLSID_MyDocuments);
1372 }
1373
1374 LPITEMIDLIST _ILCreateIExplore(void)
1375 {
1376     TRACE("()\n");
1377     return _ILCreateGuid(PT_GUID, &CLSID_Internet);
1378 }
1379
1380 LPITEMIDLIST _ILCreateControlPanel(void)
1381 {
1382     LPITEMIDLIST parent = _ILCreateGuid(PT_GUID, &CLSID_MyComputer), ret = NULL;
1383
1384     TRACE("()\n");
1385     if (parent)
1386     {
1387         LPITEMIDLIST cpl = _ILCreateGuid(PT_SHELLEXT, &CLSID_ControlPanel);
1388
1389         if (cpl)
1390         {
1391             ret = ILCombine(parent, cpl);
1392             SHFree(cpl);
1393         }
1394         SHFree(parent);
1395     }
1396     return ret;
1397 }
1398
1399 LPITEMIDLIST _ILCreatePrinters(void)
1400 {
1401     LPITEMIDLIST parent = _ILCreateGuid(PT_GUID, &CLSID_MyComputer), ret = NULL;
1402
1403     TRACE("()\n");
1404     if (parent)
1405     {
1406         LPITEMIDLIST printers = _ILCreateGuid(PT_YAGUID, &CLSID_Printers);
1407
1408         if (printers)
1409         {
1410             ret = ILCombine(parent, printers);
1411             SHFree(printers);
1412         }
1413         SHFree(parent);
1414     }
1415     return ret;
1416 }
1417
1418 LPITEMIDLIST _ILCreateNetwork(void)
1419 {
1420     TRACE("()\n");
1421     return _ILCreateGuid(PT_GUID, &CLSID_NetworkPlaces);
1422 }
1423
1424 LPITEMIDLIST _ILCreateBitBucket(void)
1425 {
1426     TRACE("()\n");
1427     return _ILCreateGuid(PT_GUID, &CLSID_RecycleBin);
1428 }
1429
1430 LPITEMIDLIST _ILCreateNetHood(void)
1431 {
1432     TRACE("()\n");
1433     return _ILCreateGuid(PT_GUID, &CLSID_NetworkPlaces);
1434 }
1435
1436 LPITEMIDLIST _ILCreateGuid(PIDLTYPE type, REFIID guid)
1437 {
1438     LPITEMIDLIST pidlOut;
1439
1440     if (type == PT_SHELLEXT || type == PT_GUID || type == PT_YAGUID)
1441     {
1442         pidlOut = _ILAlloc(type, sizeof(GUIDStruct));
1443         if (pidlOut)
1444         {
1445             LPPIDLDATA pData = _ILGetDataPointer(pidlOut);
1446
1447             pData->u.guid.guid = *guid;
1448             TRACE("-- create GUID-pidl %s\n",
1449                   debugstr_guid(&(pData->u.guid.guid)));
1450         }
1451     }
1452     else
1453     {
1454         WARN("%d: invalid type for GUID\n", type);
1455         pidlOut = NULL;
1456     }
1457     return pidlOut;
1458 }
1459
1460 LPITEMIDLIST _ILCreateGuidFromStrA(LPCSTR szGUID)
1461 {
1462     IID iid;
1463
1464     if (!SUCCEEDED(SHCLSIDFromStringA(szGUID, &iid)))
1465     {
1466         ERR("%s is not a GUID\n", szGUID);
1467         return NULL;
1468     }
1469     return _ILCreateGuid(PT_GUID, &iid);
1470 }
1471
1472 LPITEMIDLIST _ILCreateGuidFromStrW(LPCWSTR szGUID)
1473 {
1474     IID iid;
1475
1476     if (!SUCCEEDED(SHCLSIDFromStringW(szGUID, &iid)))
1477     {
1478         ERR("%s is not a GUID\n", debugstr_w(szGUID));
1479         return NULL;
1480     }
1481     return _ILCreateGuid(PT_GUID, &iid);
1482 }
1483
1484 LPITEMIDLIST _ILCreateFromFindDataW( const WIN32_FIND_DATAW *wfd )
1485 {
1486     char    buff[MAX_PATH + 14 +1]; /* see WIN32_FIND_DATA */
1487     DWORD   len, len1, wlen, alen;
1488     LPITEMIDLIST pidl;
1489     PIDLTYPE type;
1490
1491     if (!wfd)
1492         return NULL;
1493
1494     TRACE("(%s, %s)\n",debugstr_w(wfd->cAlternateFileName), debugstr_w(wfd->cFileName));
1495
1496     /* prepare buffer with both names */
1497     len = WideCharToMultiByte(CP_ACP,0,wfd->cFileName,-1,buff,MAX_PATH,NULL,NULL);
1498     len1 = WideCharToMultiByte(CP_ACP,0,wfd->cAlternateFileName,-1, buff+len, sizeof(buff)-len, NULL, NULL);
1499     alen = len + len1;
1500
1501     type = (wfd->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? PT_FOLDER : PT_VALUE;
1502
1503     wlen = lstrlenW(wfd->cFileName) + 1;
1504     pidl = _ILAlloc(type, FIELD_OFFSET(FileStruct, szNames[alen + (alen & 1)]) +
1505                     FIELD_OFFSET(FileStructW, wszName[wlen]) + sizeof(WORD));
1506     if (pidl)
1507     {
1508         LPPIDLDATA pData = _ILGetDataPointer(pidl);
1509         FileStruct *fs = &pData->u.file;
1510         FileStructW *fsw;
1511         WORD *pOffsetW;
1512
1513         FileTimeToDosDateTime( &wfd->ftLastWriteTime, &fs->uFileDate, &fs->uFileTime);
1514         fs->dwFileSize = wfd->nFileSizeLow;
1515         fs->uFileAttribs = wfd->dwFileAttributes;
1516         memcpy(fs->szNames, buff, alen);
1517
1518         fsw = (FileStructW*)(pData->u.file.szNames + alen + (alen & 0x1));
1519         fsw->cbLen = FIELD_OFFSET(FileStructW, wszName[wlen]) + sizeof(WORD);
1520         FileTimeToDosDateTime( &wfd->ftCreationTime, &fsw->uCreationDate, &fsw->uCreationTime);
1521         FileTimeToDosDateTime( &wfd->ftLastAccessTime, &fsw->uLastAccessDate, &fsw->uLastAccessTime);
1522         memcpy(fsw->wszName, wfd->cFileName, wlen * sizeof(WCHAR));
1523
1524         pOffsetW = (WORD*)((LPBYTE)pidl + pidl->mkid.cb - sizeof(WORD));
1525         *pOffsetW = (LPBYTE)fsw - (LPBYTE)pidl;
1526         TRACE("-- Set Value: %s\n",debugstr_w(fsw->wszName));
1527     }
1528     return pidl;
1529
1530 }
1531
1532 HRESULT _ILCreateFromPathW(LPCWSTR szPath, LPITEMIDLIST* ppidl)
1533 {
1534     HANDLE hFile;
1535     WIN32_FIND_DATAW stffile;
1536
1537     if (!ppidl)
1538         return E_INVALIDARG;
1539
1540     hFile = FindFirstFileW(szPath, &stffile);
1541     if (hFile == INVALID_HANDLE_VALUE)
1542         return HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND);
1543
1544     FindClose(hFile);
1545
1546     *ppidl = _ILCreateFromFindDataW(&stffile);
1547
1548     return *ppidl ? S_OK : E_OUTOFMEMORY;
1549 }
1550
1551 LPITEMIDLIST _ILCreateDrive(LPCWSTR lpszNew)
1552 {
1553     LPITEMIDLIST pidlOut;
1554
1555     TRACE("(%s)\n",debugstr_w(lpszNew));
1556
1557     pidlOut = _ILAlloc(PT_DRIVE, sizeof(DriveStruct));
1558     if (pidlOut)
1559     {
1560         LPSTR pszDest;
1561
1562         pszDest = _ILGetTextPointer(pidlOut);
1563         if (pszDest)
1564         {
1565             strcpy(pszDest, "x:\\");
1566             pszDest[0]=toupperW(lpszNew[0]);
1567             TRACE("-- create Drive: %s\n", debugstr_a(pszDest));
1568         }
1569     }
1570     return pidlOut;
1571 }
1572
1573 LPITEMIDLIST _ILCreateEntireNetwork(void)
1574 {
1575     LPITEMIDLIST pidlOut;
1576
1577     TRACE("\n");
1578
1579     pidlOut = _ILAlloc(PT_NETWORK, FIELD_OFFSET(PIDLDATA, u.network.szNames[sizeof("Entire Network")]));
1580     if (pidlOut)
1581     {
1582         LPPIDLDATA pData = _ILGetDataPointer(pidlOut);
1583
1584         pData->u.network.dummy = 0;
1585         strcpy(pData->u.network.szNames, "Entire Network");
1586     }
1587     return pidlOut;
1588 }
1589
1590 /**************************************************************************
1591  *  _ILGetDrive()
1592  *
1593  *  Gets the text for the drive eg. 'c:\'
1594  *
1595  * RETURNS
1596  *  strlen (lpszText)
1597  */
1598 DWORD _ILGetDrive(LPCITEMIDLIST pidl,LPSTR pOut, UINT uSize)
1599 {
1600     TRACE("(%p,%p,%u)\n",pidl,pOut,uSize);
1601
1602     if(_ILIsMyComputer(pidl))
1603         pidl = ILGetNext(pidl);
1604
1605     if (pidl && _ILIsDrive(pidl))
1606         return _ILSimpleGetText(pidl, pOut, uSize);
1607
1608     return 0;
1609 }
1610
1611 /**************************************************************************
1612  *
1613  *    ### 2. section testing pidls ###
1614  *
1615  **************************************************************************
1616  *  _ILIsUnicode()
1617  *  _ILIsDesktop()
1618  *  _ILIsMyComputer()
1619  *  _ILIsSpecialFolder()
1620  *  _ILIsDrive()
1621  *  _ILIsFolder()
1622  *  _ILIsValue()
1623  *  _ILIsPidlSimple()
1624  */
1625 BOOL _ILIsUnicode(LPCITEMIDLIST pidl)
1626 {
1627     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1628
1629     TRACE("(%p)\n",pidl);
1630
1631     return (pidl && lpPData && PT_VALUEW == lpPData->type);
1632 }
1633
1634 BOOL _ILIsDesktop(LPCITEMIDLIST pidl)
1635 {
1636     TRACE("(%p)\n",pidl);
1637
1638     return pidl && pidl->mkid.cb  ? 0 : 1;
1639 }
1640
1641 BOOL _ILIsMyComputer(LPCITEMIDLIST pidl)
1642 {
1643     REFIID iid = _ILGetGUIDPointer(pidl);
1644
1645     TRACE("(%p)\n",pidl);
1646
1647     if (iid)
1648         return IsEqualIID(iid, &CLSID_MyComputer);
1649     return FALSE;
1650 }
1651
1652 BOOL _ILIsSpecialFolder (LPCITEMIDLIST pidl)
1653 {
1654     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1655
1656     TRACE("(%p)\n",pidl);
1657
1658     return (pidl && ( (lpPData && (PT_GUID== lpPData->type || PT_SHELLEXT== lpPData->type || PT_YAGUID == lpPData->type)) ||
1659               (pidl && pidl->mkid.cb == 0x00)
1660             ));
1661 }
1662
1663 BOOL _ILIsDrive(LPCITEMIDLIST pidl)
1664 {
1665     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1666
1667     TRACE("(%p)\n",pidl);
1668
1669     return (pidl && lpPData && (PT_DRIVE == lpPData->type ||
1670                     PT_DRIVE1 == lpPData->type ||
1671                     PT_DRIVE2 == lpPData->type ||
1672                     PT_DRIVE3 == lpPData->type));
1673 }
1674
1675 BOOL _ILIsFolder(LPCITEMIDLIST pidl)
1676 {
1677     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1678
1679     TRACE("(%p)\n",pidl);
1680
1681     return (pidl && lpPData && (PT_FOLDER == lpPData->type || PT_FOLDER1 == lpPData->type));
1682 }
1683
1684 BOOL _ILIsValue(LPCITEMIDLIST pidl)
1685 {
1686     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1687
1688     TRACE("(%p)\n",pidl);
1689
1690     return (pidl && lpPData && PT_VALUE == lpPData->type);
1691 }
1692
1693 BOOL _ILIsCPanelStruct(LPCITEMIDLIST pidl)
1694 {
1695     LPPIDLDATA lpPData = _ILGetDataPointer(pidl);
1696
1697     TRACE("(%p)\n",pidl);
1698
1699     return (pidl && lpPData && (lpPData->type == 0));
1700 }
1701
1702 /**************************************************************************
1703  *    _ILIsPidlSimple
1704  */
1705 BOOL _ILIsPidlSimple(LPCITEMIDLIST pidl)
1706 {
1707     BOOL ret = TRUE;
1708
1709     if(! _ILIsDesktop(pidl))    /* pidl=NULL or mkid.cb=0 */
1710     {
1711         WORD len = pidl->mkid.cb;
1712         LPCITEMIDLIST pidlnext = (LPCITEMIDLIST) (((const BYTE*)pidl) + len );
1713
1714         if (pidlnext->mkid.cb)
1715             ret = FALSE;
1716     }
1717
1718     TRACE("%s\n", ret ? "Yes" : "No");
1719     return ret;
1720 }
1721
1722 /**************************************************************************
1723  *
1724  *    ### 3. section getting values from pidls ###
1725  */
1726
1727  /**************************************************************************
1728  *  _ILSimpleGetText
1729  *
1730  * gets the text for the first item in the pidl (eg. simple pidl)
1731  *
1732  * returns the length of the string
1733  */
1734 DWORD _ILSimpleGetText (LPCITEMIDLIST pidl, LPSTR szOut, UINT uOutSize)
1735 {
1736     DWORD        dwReturn=0;
1737     LPSTR        szSrc;
1738     LPWSTR       szSrcW;
1739     GUID const * riid;
1740     char szTemp[MAX_PATH];
1741
1742     TRACE("(%p %p %x)\n",pidl,szOut,uOutSize);
1743
1744     if (!pidl)
1745         return 0;
1746
1747     if (szOut)
1748         *szOut = 0;
1749
1750     if (_ILIsDesktop(pidl))
1751     {
1752         /* desktop */
1753         if (HCR_GetClassNameA(&CLSID_ShellDesktop, szTemp, MAX_PATH))
1754         {
1755             if (szOut)
1756                 lstrcpynA(szOut, szTemp, uOutSize);
1757
1758             dwReturn = strlen (szTemp);
1759         }
1760     }
1761     else if (( szSrc = _ILGetTextPointer(pidl) ))
1762     {
1763         /* filesystem */
1764         if (szOut)
1765             lstrcpynA(szOut, szSrc, uOutSize);
1766
1767         dwReturn = strlen(szSrc);
1768     }
1769     else if (( szSrcW = _ILGetTextPointerW(pidl) ))
1770     {
1771         /* unicode filesystem */
1772         WideCharToMultiByte(CP_ACP,0,szSrcW, -1, szTemp, MAX_PATH, NULL, NULL);
1773
1774         if (szOut)
1775             lstrcpynA(szOut, szTemp, uOutSize);
1776
1777         dwReturn = strlen (szTemp);
1778     }
1779     else if (( riid = _ILGetGUIDPointer(pidl) ))
1780     {
1781         /* special folder */
1782         if ( HCR_GetClassNameA(riid, szTemp, MAX_PATH) )
1783         {
1784             if (szOut)
1785                 lstrcpynA(szOut, szTemp, uOutSize);
1786
1787             dwReturn = strlen (szTemp);
1788         }
1789     }
1790     else
1791     {
1792         ERR("-- no text\n");
1793     }
1794
1795     TRACE("-- (%p=%s 0x%08x)\n",szOut,debugstr_a(szOut),dwReturn);
1796     return dwReturn;
1797 }
1798
1799  /**************************************************************************
1800  *  _ILSimpleGetTextW
1801  *
1802  * gets the text for the first item in the pidl (eg. simple pidl)
1803  *
1804  * returns the length of the string
1805  */
1806 DWORD _ILSimpleGetTextW (LPCITEMIDLIST pidl, LPWSTR szOut, UINT uOutSize)
1807 {
1808     DWORD   dwReturn;
1809     FileStructW *pFileStructW = _ILGetFileStructW(pidl);
1810
1811     TRACE("(%p %p %x)\n",pidl,szOut,uOutSize);
1812
1813     if (pFileStructW) {
1814         lstrcpynW(szOut, pFileStructW->wszName, uOutSize);
1815         dwReturn = lstrlenW(pFileStructW->wszName);
1816     } else {
1817         GUID const * riid;
1818         WCHAR szTemp[MAX_PATH];
1819         LPSTR szSrc;
1820         LPWSTR szSrcW;
1821         dwReturn=0;
1822
1823         if (!pidl)
1824             return 0;
1825
1826         if (szOut)
1827             *szOut = 0;
1828
1829         if (_ILIsDesktop(pidl))
1830         {
1831             /* desktop */
1832             if (HCR_GetClassNameW(&CLSID_ShellDesktop, szTemp, MAX_PATH))
1833             {
1834                 if (szOut)
1835                     lstrcpynW(szOut, szTemp, uOutSize);
1836
1837                 dwReturn = lstrlenW (szTemp);
1838             }
1839         }
1840         else if (( szSrcW = _ILGetTextPointerW(pidl) ))
1841         {
1842             /* unicode filesystem */
1843             if (szOut)
1844                 lstrcpynW(szOut, szSrcW, uOutSize);
1845
1846             dwReturn = lstrlenW(szSrcW);
1847         }
1848         else if (( szSrc = _ILGetTextPointer(pidl) ))
1849         {
1850             /* filesystem */
1851             MultiByteToWideChar(CP_ACP, 0, szSrc, -1, szTemp, MAX_PATH);
1852
1853             if (szOut)
1854                 lstrcpynW(szOut, szTemp, uOutSize);
1855
1856             dwReturn = lstrlenW (szTemp);
1857         }
1858         else if (( riid = _ILGetGUIDPointer(pidl) ))
1859         {
1860             /* special folder */
1861             if ( HCR_GetClassNameW(riid, szTemp, MAX_PATH) )
1862             {
1863                 if (szOut)
1864                     lstrcpynW(szOut, szTemp, uOutSize);
1865
1866                 dwReturn = lstrlenW (szTemp);
1867             }
1868         }
1869         else
1870         {
1871             ERR("-- no text\n");
1872         }
1873     }
1874
1875     TRACE("-- (%p=%s 0x%08x)\n",szOut,debugstr_w(szOut),dwReturn);
1876     return dwReturn;
1877 }
1878
1879 /**************************************************************************
1880  *
1881  *    ### 4. getting pointers to parts of pidls ###
1882  *
1883  **************************************************************************
1884  *  _ILGetDataPointer()
1885  */
1886 LPPIDLDATA _ILGetDataPointer(LPCITEMIDLIST pidl)
1887 {
1888     if(pidl && pidl->mkid.cb != 0x00)
1889         return (LPPIDLDATA) &(pidl->mkid.abID);
1890     return NULL;
1891 }
1892
1893 /**************************************************************************
1894  *  _ILGetTextPointerW()
1895  * gets a pointer to the unicode long filename string stored in the pidl
1896  */
1897 LPWSTR _ILGetTextPointerW(LPCITEMIDLIST pidl)
1898 {
1899     /* TRACE(pidl,"(pidl%p)\n", pidl);*/
1900
1901     LPPIDLDATA pdata = _ILGetDataPointer(pidl);
1902
1903     if (!pdata)
1904         return NULL;
1905
1906     switch (pdata->type)
1907     {
1908     case PT_GUID:
1909     case PT_SHELLEXT:
1910     case PT_YAGUID:
1911         return NULL;
1912
1913     case PT_DRIVE:
1914     case PT_DRIVE1:
1915     case PT_DRIVE2:
1916     case PT_DRIVE3:
1917         /*return (LPSTR)&(pdata->u.drive.szDriveName);*/
1918         return NULL;
1919
1920     case PT_FOLDER:
1921     case PT_FOLDER1:
1922     case PT_VALUE:
1923     case PT_IESPECIAL1:
1924     case PT_IESPECIAL2:
1925         /*return (LPSTR)&(pdata->u.file.szNames);*/
1926         return NULL;
1927
1928     case PT_WORKGRP:
1929     case PT_COMP:
1930     case PT_NETWORK:
1931     case PT_NETPROVIDER:
1932     case PT_SHARE:
1933         /*return (LPSTR)&(pdata->u.network.szNames);*/
1934         return NULL;
1935
1936     case PT_VALUEW:
1937         return (LPWSTR)&(pdata->u.file.szNames);
1938     }
1939     return NULL;
1940 }
1941
1942
1943 /**************************************************************************
1944  *  _ILGetTextPointer()
1945  * gets a pointer to the long filename string stored in the pidl
1946  */
1947 LPSTR _ILGetTextPointer(LPCITEMIDLIST pidl)
1948 {
1949     /* TRACE(pidl,"(pidl%p)\n", pidl);*/
1950
1951     LPPIDLDATA pdata = _ILGetDataPointer(pidl);
1952
1953     if (!pdata)
1954         return NULL;
1955
1956     switch (pdata->type)
1957     {
1958     case PT_GUID:
1959     case PT_SHELLEXT:
1960     case PT_YAGUID:
1961         return NULL;
1962
1963     case PT_DRIVE:
1964     case PT_DRIVE1:
1965     case PT_DRIVE2:
1966     case PT_DRIVE3:
1967         return (LPSTR)&(pdata->u.drive.szDriveName);
1968
1969     case PT_FOLDER:
1970     case PT_FOLDER1:
1971     case PT_VALUE:
1972     case PT_IESPECIAL1:
1973     case PT_IESPECIAL2:
1974         return (LPSTR)&(pdata->u.file.szNames);
1975
1976     case PT_WORKGRP:
1977     case PT_COMP:
1978     case PT_NETWORK:
1979     case PT_NETPROVIDER:
1980     case PT_SHARE:
1981         return (LPSTR)&(pdata->u.network.szNames);
1982     }
1983     return NULL;
1984 }
1985
1986 /**************************************************************************
1987  *  _ILGetSTextPointer()
1988  * gets a pointer to the short filename string stored in the pidl
1989  */
1990 LPSTR _ILGetSTextPointer(LPCITEMIDLIST pidl)
1991 {
1992     /* TRACE(pidl,"(pidl%p)\n", pidl); */
1993
1994     LPPIDLDATA pdata =_ILGetDataPointer(pidl);
1995
1996     if (!pdata)
1997         return NULL;
1998
1999     switch (pdata->type)
2000     {
2001     case PT_FOLDER:
2002     case PT_VALUE:
2003     case PT_IESPECIAL1:
2004     case PT_IESPECIAL2:
2005         return (LPSTR)(pdata->u.file.szNames + strlen (pdata->u.file.szNames) + 1);
2006
2007     case PT_WORKGRP:
2008         return (LPSTR)(pdata->u.network.szNames + strlen (pdata->u.network.szNames) + 1);
2009     }
2010     return NULL;
2011 }
2012
2013 /**************************************************************************
2014  * _ILGetGUIDPointer()
2015  *
2016  * returns reference to guid stored in some pidls
2017  */
2018 IID* _ILGetGUIDPointer(LPCITEMIDLIST pidl)
2019 {
2020     LPPIDLDATA pdata =_ILGetDataPointer(pidl);
2021
2022     TRACE("%p\n", pidl);
2023
2024     if (!pdata)
2025         return NULL;
2026
2027     TRACE("pdata->type 0x%04x\n", pdata->type);
2028     switch (pdata->type)
2029     {
2030     case PT_SHELLEXT:
2031     case PT_GUID:
2032     case PT_YAGUID:
2033         return &(pdata->u.guid.guid);
2034
2035     default:
2036         TRACE("Unknown pidl type 0x%04x\n", pdata->type);
2037         break;
2038     }
2039     return NULL;
2040 }
2041
2042 /******************************************************************************
2043  * _ILGetFileStructW [Internal]
2044  *
2045  * Get pointer the a SHITEMID's FileStructW field if present
2046  *
2047  * PARAMS
2048  *  pidl [I] The SHITEMID
2049  *
2050  * RETURNS
2051  *  Success: Pointer to pidl's FileStructW field.
2052  *  Failure: NULL
2053  */
2054 FileStructW* _ILGetFileStructW(LPCITEMIDLIST pidl) {
2055     FileStructW *pFileStructW;
2056     WORD cbOffset;
2057
2058     if (!(_ILIsValue(pidl) || _ILIsFolder(pidl)))
2059         return NULL;
2060
2061     cbOffset = *(const WORD *)((const BYTE *)pidl + pidl->mkid.cb - sizeof(WORD));
2062     pFileStructW = (FileStructW*)((LPBYTE)pidl + cbOffset);
2063
2064     /* Currently I don't see a fool prove way to figure out if a pidl is for sure of WinXP
2065      * style with a FileStructW member. If we switch all our shellfolder-implementations to
2066      * the new format, this won't be a problem. For now, we do as many sanity checks as possible. */
2067     if (cbOffset & 0x1 || /* FileStructW member is word aligned in the pidl */
2068         /* FileStructW is positioned after FileStruct */
2069         cbOffset < sizeof(pidl->mkid.cb) + sizeof(PIDLTYPE) + sizeof(FileStruct) ||
2070         /* There has to be enough space at cbOffset in the pidl to hold FileStructW and cbOffset */
2071         cbOffset > pidl->mkid.cb - sizeof(cbOffset) - sizeof(FileStructW) ||
2072         pidl->mkid.cb != cbOffset + pFileStructW->cbLen)
2073     {
2074         WARN("Invalid pidl format (cbOffset = %d)!\n", cbOffset);
2075         return NULL;
2076     }
2077
2078     return pFileStructW;
2079 }
2080
2081 /*************************************************************************
2082  * _ILGetFileDateTime
2083  *
2084  * Given the ItemIdList, get the FileTime
2085  *
2086  * PARAMS
2087  *      pidl        [I] The ItemIDList
2088  *      pFt         [I] the resulted FILETIME of the file
2089  *
2090  * RETURNS
2091  *     True if Successful
2092  *
2093  * NOTES
2094  *
2095  */
2096 BOOL _ILGetFileDateTime(LPCITEMIDLIST pidl, FILETIME *pFt)
2097 {
2098     LPPIDLDATA pdata = _ILGetDataPointer(pidl);
2099
2100     if (!pdata)
2101         return FALSE;
2102
2103     switch (pdata->type)
2104     {
2105     case PT_FOLDER:
2106     case PT_VALUE:
2107         DosDateTimeToFileTime(pdata->u.file.uFileDate, pdata->u.file.uFileTime, pFt);
2108         break;
2109     default:
2110         return FALSE;
2111     }
2112     return TRUE;
2113 }
2114
2115 BOOL _ILGetFileDate (LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2116 {
2117     FILETIME ft,lft;
2118     SYSTEMTIME time;
2119     BOOL ret;
2120
2121     if (_ILGetFileDateTime( pidl, &ft ))
2122     {
2123         FileTimeToLocalFileTime(&ft, &lft);
2124         FileTimeToSystemTime (&lft, &time);
2125
2126         ret = GetDateFormatA(LOCALE_USER_DEFAULT,DATE_SHORTDATE,&time, NULL,  pOut, uOutSize);
2127         if (ret)
2128         {
2129             /* Append space + time without seconds */
2130             pOut[ret-1] = ' ';
2131             GetTimeFormatA(LOCALE_USER_DEFAULT, TIME_NOSECONDS, &time, NULL, &pOut[ret], uOutSize - ret);
2132         }
2133     }
2134     else
2135     {
2136         pOut[0] = '\0';
2137         ret = FALSE;
2138     }
2139     return ret;
2140 }
2141
2142 /*************************************************************************
2143  * _ILGetFileSize
2144  *
2145  * Given the ItemIdList, get the FileSize
2146  *
2147  * PARAMS
2148  *    pidl     [I] The ItemIDList
2149  *    pOut     [I] The buffer to save the result
2150  *    uOutsize [I] The size of the buffer
2151  *
2152  * RETURNS
2153  *    The FileSize
2154  *
2155  * NOTES
2156  *    pOut can be null when no string is needed
2157  *
2158  */
2159 DWORD _ILGetFileSize (LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2160 {
2161     LPPIDLDATA pdata = _ILGetDataPointer(pidl);
2162     DWORD dwSize;
2163
2164     if (!pdata)
2165         return 0;
2166
2167     switch (pdata->type)
2168     {
2169     case PT_VALUE:
2170         dwSize = pdata->u.file.dwFileSize;
2171         if (pOut)
2172             StrFormatKBSizeA(dwSize, pOut, uOutSize);
2173         return dwSize;
2174     }
2175     if (pOut)
2176         *pOut = 0x00;
2177     return 0;
2178 }
2179
2180 BOOL _ILGetExtension (LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2181 {
2182     char szTemp[MAX_PATH];
2183     const char * pPoint;
2184     LPCITEMIDLIST  pidlTemp=pidl;
2185
2186     TRACE("pidl=%p\n",pidl);
2187
2188     if (!pidl)
2189         return FALSE;
2190
2191     pidlTemp = ILFindLastID(pidl);
2192
2193     if (!_ILIsValue(pidlTemp))
2194         return FALSE;
2195     if (!_ILSimpleGetText(pidlTemp, szTemp, MAX_PATH))
2196         return FALSE;
2197
2198     pPoint = PathFindExtensionA(szTemp);
2199
2200     if (!*pPoint)
2201         return FALSE;
2202
2203     pPoint++;
2204     lstrcpynA(pOut, pPoint, uOutSize);
2205     TRACE("%s\n",pOut);
2206
2207     return TRUE;
2208 }
2209
2210 /*************************************************************************
2211  * _ILGetFileType
2212  *
2213  * Given the ItemIdList, get the file type description
2214  *
2215  * PARAMS
2216  *      pidl        [I] The ItemIDList (simple)
2217  *      pOut        [I] The buffer to save the result
2218  *      uOutsize    [I] The size of the buffer
2219  *
2220  * RETURNS
2221  *    nothing
2222  *
2223  * NOTES
2224  *    This function copies as much as possible into the buffer.
2225  */
2226 void _ILGetFileType(LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2227 {
2228     if(_ILIsValue(pidl))
2229     {
2230         char sTemp[64];
2231
2232         if(uOutSize > 0)
2233             pOut[0] = 0;
2234         if (_ILGetExtension (pidl, sTemp, 64))
2235         {
2236             if (!( HCR_MapTypeToValueA(sTemp, sTemp, 64, TRUE)
2237                 && HCR_MapTypeToValueA(sTemp, pOut, uOutSize, FALSE )))
2238             {
2239                 lstrcpynA (pOut, sTemp, uOutSize - 6);
2240                 strcat (pOut, "-file");
2241             }
2242         }
2243     }
2244     else
2245         lstrcpynA(pOut, "Folder", uOutSize);
2246 }
2247
2248 /*************************************************************************
2249  * _ILGetFileAttributes
2250  *
2251  * Given the ItemIdList, get the Attrib string format
2252  *
2253  * PARAMS
2254  *      pidl        [I] The ItemIDList
2255  *      pOut        [I] The buffer to save the result
2256  *      uOutsize    [I] The size of the Buffer
2257  *
2258  * RETURNS
2259  *     Attributes
2260  *
2261  * FIXME
2262  *  return value 0 in case of error is a valid return value
2263  *
2264  */
2265 DWORD _ILGetFileAttributes(LPCITEMIDLIST pidl, LPSTR pOut, UINT uOutSize)
2266 {
2267     LPPIDLDATA pData = _ILGetDataPointer(pidl);
2268     WORD wAttrib = 0;
2269     int i;
2270
2271     if (!pData)
2272         return 0;
2273
2274     switch(pData->type)
2275     {
2276     case PT_FOLDER:
2277     case PT_VALUE:
2278         wAttrib = pData->u.file.uFileAttribs;
2279         break;
2280     }
2281
2282     if(uOutSize >= 6)
2283     {
2284         i=0;
2285         if(wAttrib & FILE_ATTRIBUTE_READONLY)
2286             pOut[i++] = 'R';
2287         if(wAttrib & FILE_ATTRIBUTE_HIDDEN)
2288             pOut[i++] = 'H';
2289         if(wAttrib & FILE_ATTRIBUTE_SYSTEM)
2290             pOut[i++] = 'S';
2291         if(wAttrib & FILE_ATTRIBUTE_ARCHIVE)
2292             pOut[i++] = 'A';
2293         if(wAttrib & FILE_ATTRIBUTE_COMPRESSED)
2294             pOut[i++] = 'C';
2295         pOut[i] = 0x00;
2296     }
2297     return wAttrib;
2298 }
2299
2300 /*************************************************************************
2301  * ILFreeaPidl
2302  *
2303  * free a aPidl struct
2304  */
2305 void _ILFreeaPidl(LPITEMIDLIST * apidl, UINT cidl)
2306 {
2307     UINT   i;
2308
2309     if (apidl)
2310     {
2311         for (i = 0; i < cidl; i++)
2312             SHFree(apidl[i]);
2313         SHFree(apidl);
2314     }
2315 }
2316
2317 /*************************************************************************
2318  * ILCopyaPidl
2319  *
2320  * copies an aPidl struct
2321  */
2322 LPITEMIDLIST* _ILCopyaPidl(const LPCITEMIDLIST * apidlsrc, UINT cidl)
2323 {
2324     UINT i;
2325     LPITEMIDLIST *apidldest;
2326
2327     apidldest = SHAlloc(cidl * sizeof(LPITEMIDLIST));
2328     if (!apidlsrc)
2329         return NULL;
2330
2331     for (i = 0; i < cidl; i++)
2332         apidldest[i] = ILClone(apidlsrc[i]);
2333
2334     return apidldest;
2335 }
2336
2337 /*************************************************************************
2338  * _ILCopyCidaToaPidl
2339  *
2340  * creates aPidl from CIDA
2341  */
2342 LPITEMIDLIST* _ILCopyCidaToaPidl(LPITEMIDLIST* pidl, const CIDA * cida)
2343 {
2344     UINT i;
2345     LPITEMIDLIST *dst;
2346
2347     dst = SHAlloc(cida->cidl * sizeof(LPITEMIDLIST));
2348     if (!dst)
2349         return NULL;
2350
2351     if (pidl)
2352         *pidl = ILClone((LPCITEMIDLIST)(&((const BYTE*)cida)[cida->aoffset[0]]));
2353
2354     for (i = 0; i < cida->cidl; i++)
2355         dst[i] = ILClone((LPCITEMIDLIST)(&((const BYTE*)cida)[cida->aoffset[i + 1]]));
2356
2357     return dst;
2358 }