dlls/shell32/pidl.c

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