src/common/filename.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/filename.cpp
   3 // Purpose:     wxFileName - encapsulates a file path
   4 // Author:      Robert Roebling, Vadim Zeitlin
   5 // Modified by:
   6 // Created:     28.12.2000
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2000 Robert Roebling
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 /*
  13    Here are brief descriptions of the filename formats supported by this class:
  14
  15    wxPATH_UNIX: standard Unix format, used under Darwin as well, absolute file
  16                 names have the form:
  17                 /dir1/dir2/.../dirN/filename, "." and ".." stand for the
  18                 current and parent directory respectively, "~" is parsed as the
  19                 user HOME and "~username" as the HOME of that user
  20
  21    wxPATH_DOS:  DOS/Windows format, absolute file names have the form:
  22                 drive:\dir1\dir2\...\dirN\filename.ext where drive is a single
  23                 letter. "." and ".." as for Unix but no "~".
  24
  25                 There are also UNC names of the form \\share\fullpath
  26
  27    wxPATH_MAC:  Mac OS 8/9 and Mac OS X under CodeWarrior 7 format, absolute file
  28                 names have the form
  29                     volume:dir1:...:dirN:filename
  30                 and the relative file names are either
  31                     :dir1:...:dirN:filename
  32                 or just
  33                     filename
  34                 (although :filename works as well).
  35                 Since the volume is just part of the file path, it is not
  36                 treated like a separate entity as it is done under DOS and
  37                 VMS, it is just treated as another dir.
  38
  39    wxPATH_VMS:  VMS native format, absolute file names have the form
  40                     <device>:[dir1.dir2.dir3]file.txt
  41                 or
  42                     <device>:[000000.dir1.dir2.dir3]file.txt
  43
  44                 the <device> is the physical device (i.e. disk). 000000 is the
  45                 root directory on the device which can be omitted.
  46
  47                 Note that VMS uses different separators unlike Unix:
  48                  : always after the device. If the path does not contain : than
  49                    the default (the device of the current directory) is assumed.
  50                  [ start of directory specification
  51                  . separator between directory and subdirectory
  52                  ] between directory and file
  53  */
  54
  55 // ============================================================================
  56 // declarations
  57 // ============================================================================
  58
  59 // ----------------------------------------------------------------------------
  60 // headers
  61 // ----------------------------------------------------------------------------
  62
  63 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  64 #pragma implementation "filename.h"
  65 #endif
  66
  67 // For compilers that support precompilation, includes "wx.h".
  68 #include "wx/wxprec.h"
  69
  70 #ifdef __BORLANDC__
  71 #pragma hdrstop
  72 #endif
  73
  74 #ifndef WX_PRECOMP
  75 #include "wx/intl.h"
  76 #include "wx/log.h"
  77 #include "wx/file.h"
  78 #endif
  79
  80 #include "wx/filename.h"
  81 #include "wx/tokenzr.h"
  82 #include "wx/config.h"          // for wxExpandEnvVars
  83 #include "wx/utils.h"
  84 #include "wx/file.h"
  85 #include "wx/dynlib.h"
  86
  87 // For GetShort/LongPathName
  88 #ifdef __WIN32__
  89 #include "wx/msw/wrapwin.h"
  90 #endif
  91
  92 #ifdef __WXWINCE__
  93 #include "wx/msw/private.h"
  94 #endif
  95
  96 #if defined(__WXMAC__)
  97   #include  "wx/mac/private.h"  // includes mac headers
  98 #endif
  99
 100 // utime() is POSIX so should normally be available on all Unices
 101 #ifdef __UNIX_LIKE__
 102 #include <sys/types.h>
 103 #include <utime.h>
 104 #include <sys/stat.h>
 105 #include <unistd.h>
 106 #endif
 107
 108 #ifdef __DJGPP__
 109 #include <unistd.h>
 110 #endif
 111
 112 #ifdef __MWERKS__
 113 #ifdef __MACH__
 114 #include <sys/types.h>
 115 #include <utime.h>
 116 #include <sys/stat.h>
 117 #include <unistd.h>
 118 #else
 119 #include <stat.h>
 120 #include <unistd.h>
 121 #include <unix.h>
 122 #endif
 123 #endif
 124
 125 #ifdef __WATCOMC__
 126 #include <io.h>
 127 #include <sys/utime.h>
 128 #include <sys/stat.h>
 129 #endif
 130
 131 #ifdef __VISAGECPP__
 132 #ifndef MAX_PATH
 133 #define MAX_PATH 256
 134 #endif
 135 #endif
 136
 137 #ifdef __EMX__
 138 #include <os2.h>
 139 #define MAX_PATH _MAX_PATH
 140 #endif
 141
 142 // ----------------------------------------------------------------------------
 143 // private classes
 144 // ----------------------------------------------------------------------------
 145
 146 // small helper class which opens and closes the file - we use it just to get
 147 // a file handle for the given file name to pass it to some Win32 API function
 148 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
 149
 150 class wxFileHandle
 151 {
 152 public:
 153     enum OpenMode
 154     {
 155         Read,
 156         Write
 157     };
 158
 159     wxFileHandle(const wxString& filename, OpenMode mode)
 160     {
 161         m_hFile = ::CreateFile
 162                     (
 163                      filename,                      // name
 164                      mode == Read ? GENERIC_READ    // access mask
 165                                   : GENERIC_WRITE,
 166                      FILE_SHARE_READ |              // sharing mode
 167                      FILE_SHARE_WRITE,              // (allow everything)
 168                      NULL,                          // no secutity attr
 169                      OPEN_EXISTING,                 // creation disposition
 170                      0,                             // no flags
 171                      NULL                           // no template file
 172                     );
 173
 174         if ( m_hFile == INVALID_HANDLE_VALUE )
 175         {
 176             wxLogSysError(_("Failed to open '%s' for %s"),
 177                           filename.c_str(),
 178                           mode == Read ? _("reading") : _("writing"));
 179         }
 180     }
 181
 182     ~wxFileHandle()
 183     {
 184         if ( m_hFile != INVALID_HANDLE_VALUE )
 185         {
 186             if ( !::CloseHandle(m_hFile) )
 187             {
 188                 wxLogSysError(_("Failed to close file handle"));
 189             }
 190         }
 191     }
 192
 193     // return true only if the file could be opened successfully
 194     bool IsOk() const { return m_hFile != INVALID_HANDLE_VALUE; }
 195
 196     // get the handle
 197     operator HANDLE() const { return m_hFile; }
 198
 199 private:
 200     HANDLE m_hFile;
 201 };
 202
 203 #endif // __WIN32__
 204
 205 // ----------------------------------------------------------------------------
 206 // private functions
 207 // ----------------------------------------------------------------------------
 208
 209 #if wxUSE_DATETIME && defined(__WIN32__) && !defined(__WXMICROWIN__)
 210
 211 // convert between wxDateTime and FILETIME which is a 64-bit value representing
 212 // the number of 100-nanosecond intervals since January 1, 1601.
 213
 214 static void ConvertFileTimeToWx(wxDateTime *dt, const FILETIME &ft)
 215 {
 216     FILETIME ftcopy = ft;
 217     FILETIME ftLocal;
 218     if ( !::FileTimeToLocalFileTime(&ftcopy, &ftLocal) )
 219     {
 220         wxLogLastError(_T("FileTimeToLocalFileTime"));
 221     }
 222
 223     SYSTEMTIME st;
 224     if ( !::FileTimeToSystemTime(&ftLocal, &st) )
 225     {
 226         wxLogLastError(_T("FileTimeToSystemTime"));
 227     }
 228
 229     dt->Set(st.wDay, wxDateTime::Month(st.wMonth - 1), st.wYear,
 230             st.wHour, st.wMinute, st.wSecond, st.wMilliseconds);
 231 }
 232
 233 static void ConvertWxToFileTime(FILETIME *ft, const wxDateTime& dt)
 234 {
 235     SYSTEMTIME st;
 236     st.wDay = dt.GetDay();
 237     st.wMonth = dt.GetMonth() + 1;
 238     st.wYear = dt.GetYear();
 239     st.wHour = dt.GetHour();
 240     st.wMinute = dt.GetMinute();
 241     st.wSecond = dt.GetSecond();
 242     st.wMilliseconds = dt.GetMillisecond();
 243
 244     FILETIME ftLocal;
 245     if ( !::SystemTimeToFileTime(&st, &ftLocal) )
 246     {
 247         wxLogLastError(_T("SystemTimeToFileTime"));
 248     }
 249
 250     if ( !::LocalFileTimeToFileTime(&ftLocal, ft) )
 251     {
 252         wxLogLastError(_T("LocalFileTimeToFileTime"));
 253     }
 254 }
 255
 256 #endif // wxUSE_DATETIME && __WIN32__
 257
 258 // return a string with the volume par
 259 static wxString wxGetVolumeString(const wxString& volume, wxPathFormat format)
 260 {
 261     wxString path;
 262
 263     if ( !volume.empty() )
 264     {
 265         format = wxFileName::GetFormat(format);
 266
 267         // Special Windows UNC paths hack, part 2: undo what we did in
 268         // SplitPath() and make an UNC path if we have a drive which is not a
 269         // single letter (hopefully the network shares can't be one letter only
 270         // although I didn't find any authoritative docs on this)
 271         if ( format == wxPATH_DOS && volume.length() > 1 )
 272         {
 273             path << wxFILE_SEP_PATH_DOS << wxFILE_SEP_PATH_DOS << volume;
 274         }
 275         else if  ( format == wxPATH_DOS || format == wxPATH_VMS )
 276         {
 277             path << volume << wxFileName::GetVolumeSeparator(format);
 278         }
 279         // else ignore
 280     }
 281
 282     return path;
 283 }
 284
 285 // ============================================================================
 286 // implementation
 287 // ============================================================================
 288
 289 // ----------------------------------------------------------------------------
 290 // wxFileName construction
 291 // ----------------------------------------------------------------------------
 292
 293 void wxFileName::Assign( const wxFileName &filepath )
 294 {
 295     m_volume = filepath.GetVolume();
 296     m_dirs = filepath.GetDirs();
 297     m_name = filepath.GetName();
 298     m_ext = filepath.GetExt();
 299     m_relative = filepath.m_relative;
 300 }
 301
 302 void wxFileName::Assign(const wxString& volume,
 303                         const wxString& path,
 304                         const wxString& name,
 305                         const wxString& ext,
 306                         wxPathFormat format )
 307 {
 308     SetPath( path, format );
 309
 310     m_volume = volume;
 311     m_ext = ext;
 312     m_name = name;
 313 }
 314
 315 void wxFileName::SetPath( const wxString& pathOrig, wxPathFormat format )
 316 {
 317     m_dirs.Clear();
 318
 319     if ( pathOrig.empty() )
 320     {
 321         // no path at all
 322         m_relative = true;
 323
 324         return;
 325     }
 326
 327     format = GetFormat( format );
 328
 329     // 0) deal with possible volume part first
 330     wxString volume,
 331              path;
 332     SplitVolume(pathOrig, &volume, &path, format);
 333     if ( !volume.empty() )
 334     {
 335         m_relative = false;
 336
 337         SetVolume(volume);
 338     }
 339
 340     // 1) Determine if the path is relative or absolute.
 341     wxChar leadingChar = path[0u];
 342
 343     switch (format)
 344     {
 345         case wxPATH_MAC:
 346             m_relative = leadingChar == wxT(':');
 347
 348             // We then remove a leading ":". The reason is in our
 349             // storage form for relative paths:
 350             // ":dir:file.txt" actually means "./dir/file.txt" in
 351             // DOS notation and should get stored as
 352             // (relative) (dir) (file.txt)
 353             // "::dir:file.txt" actually means "../dir/file.txt"
 354             // stored as (relative) (..) (dir) (file.txt)
 355             // This is important only for the Mac as an empty dir
 356             // actually means <UP>, whereas under DOS, double
 357             // slashes can be ignored: "\\\\" is the same as "\\".
 358             if (m_relative)
 359                 path.erase( 0, 1 );
 360             break;
 361
 362         case wxPATH_VMS:
 363             // TODO: what is the relative path format here?
 364             m_relative = false;
 365             break;
 366
 367         default:
 368             wxFAIL_MSG( _T("Unknown path format") );
 369             // !! Fall through !!
 370
 371         case wxPATH_UNIX:
 372             // the paths of the form "~" or "~username" are absolute
 373             m_relative = leadingChar != wxT('/') && leadingChar != _T('~');
 374             break;
 375
 376         case wxPATH_DOS:
 377             m_relative = !IsPathSeparator(leadingChar, format);
 378             break;
 379
 380     }
 381
 382     // 2) Break up the path into its members. If the original path
 383     //    was just "/" or "\\", m_dirs will be empty. We know from
 384     //    the m_relative field, if this means "nothing" or "root dir".
 385
 386     wxStringTokenizer tn( path, GetPathSeparators(format) );
 387
 388     while ( tn.HasMoreTokens() )
 389     {
 390         wxString token = tn.GetNextToken();
 391
 392         // Remove empty token under DOS and Unix, interpret them
 393         // as .. under Mac.
 394         if (token.empty())
 395         {
 396             if (format == wxPATH_MAC)
 397                 m_dirs.Add( wxT("..") );
 398             // else ignore
 399         }
 400         else
 401         {
 402            m_dirs.Add( token );
 403         }
 404     }
 405 }
 406
 407 void wxFileName::Assign(const wxString& fullpath,
 408                         wxPathFormat format)
 409 {
 410     wxString volume, path, name, ext;
 411     SplitPath(fullpath, &volume, &path, &name, &ext, format);
 412
 413     Assign(volume, path, name, ext, format);
 414 }
 415
 416 void wxFileName::Assign(const wxString& fullpathOrig,
 417                         const wxString& fullname,
 418                         wxPathFormat format)
 419 {
 420     // always recognize fullpath as directory, even if it doesn't end with a
 421     // slash
 422     wxString fullpath = fullpathOrig;
 423     if ( !wxEndsWithPathSeparator(fullpath) )
 424     {
 425         fullpath += GetPathSeparator(format);
 426     }
 427
 428     wxString volume, path, name, ext;
 429
 430     // do some consistency checks in debug mode: the name should be really just
 431     // the filename and the path should be really just a path
 432 #ifdef __WXDEBUG__
 433     wxString pathDummy, nameDummy, extDummy;
 434
 435     SplitPath(fullname, &pathDummy, &name, &ext, format);
 436
 437     wxASSERT_MSG( pathDummy.empty(),
 438                   _T("the file name shouldn't contain the path") );
 439
 440     SplitPath(fullpath, &volume, &path, &nameDummy, &extDummy, format);
 441
 442     wxASSERT_MSG( nameDummy.empty() && extDummy.empty(),
 443                   _T("the path shouldn't contain file name nor extension") );
 444
 445 #else // !__WXDEBUG__
 446     SplitPath(fullname, NULL /* no path */, &name, &ext, format);
 447     SplitPath(fullpath, &volume, &path, NULL, NULL, format);
 448 #endif // __WXDEBUG__/!__WXDEBUG__
 449
 450     Assign(volume, path, name, ext, format);
 451 }
 452
 453 void wxFileName::AssignDir(const wxString& dir, wxPathFormat format)
 454 {
 455     Assign(dir, _T(""), format);
 456 }
 457
 458 void wxFileName::Clear()
 459 {
 460     m_dirs.Clear();
 461
 462     m_volume =
 463     m_name =
 464     m_ext = wxEmptyString;
 465
 466     // we don't have any absolute path for now
 467     m_relative = true;
 468 }
 469
 470 /* static */
 471 wxFileName wxFileName::FileName(const wxString& file, wxPathFormat format)
 472 {
 473     return wxFileName(file, format);
 474 }
 475
 476 /* static */
 477 wxFileName wxFileName::DirName(const wxString& dir, wxPathFormat format)
 478 {
 479     wxFileName fn;
 480     fn.AssignDir(dir, format);
 481     return fn;
 482 }
 483
 484 // ----------------------------------------------------------------------------
 485 // existence tests
 486 // ----------------------------------------------------------------------------
 487
 488 bool wxFileName::FileExists() const
 489 {
 490     return wxFileName::FileExists( GetFullPath() );
 491 }
 492
 493 bool wxFileName::FileExists( const wxString &file )
 494 {
 495     return ::wxFileExists( file );
 496 }
 497
 498 bool wxFileName::DirExists() const
 499 {
 500     return wxFileName::DirExists( GetFullPath() );
 501 }
 502
 503 bool wxFileName::DirExists( const wxString &dir )
 504 {
 505     return ::wxDirExists( dir );
 506 }
 507
 508 // ----------------------------------------------------------------------------
 509 // CWD and HOME stuff
 510 // ----------------------------------------------------------------------------
 511
 512 void wxFileName::AssignCwd(const wxString& volume)
 513 {
 514     AssignDir(wxFileName::GetCwd(volume));
 515 }
 516
 517 /* static */
 518 wxString wxFileName::GetCwd(const wxString& volume)
 519 {
 520     // if we have the volume, we must get the current directory on this drive
 521     // and to do this we have to chdir to this volume - at least under Windows,
 522     // I don't know how to get the current drive on another volume elsewhere
 523     // (TODO)
 524     wxString cwdOld;
 525     if ( !volume.empty() )
 526     {
 527         cwdOld = wxGetCwd();
 528         SetCwd(volume + GetVolumeSeparator());
 529     }
 530
 531     wxString cwd = ::wxGetCwd();
 532
 533     if ( !volume.empty() )
 534     {
 535         SetCwd(cwdOld);
 536     }
 537
 538     return cwd;
 539 }
 540
 541 bool wxFileName::SetCwd()
 542 {
 543     return wxFileName::SetCwd( GetFullPath() );
 544 }
 545
 546 bool wxFileName::SetCwd( const wxString &cwd )
 547 {
 548     return ::wxSetWorkingDirectory( cwd );
 549 }
 550
 551 void wxFileName::AssignHomeDir()
 552 {
 553     AssignDir(wxFileName::GetHomeDir());
 554 }
 555
 556 wxString wxFileName::GetHomeDir()
 557 {
 558     return ::wxGetHomeDir();
 559 }
 560
 561 void wxFileName::AssignTempFileName(const wxString& prefix, wxFile *fileTemp)
 562 {
 563     wxString tempname = CreateTempFileName(prefix, fileTemp);
 564     if ( tempname.empty() )
 565     {
 566         // error, failed to get temp file name
 567         Clear();
 568     }
 569     else // ok
 570     {
 571         Assign(tempname);
 572     }
 573 }
 574
 575 /* static */
 576 wxString
 577 wxFileName::CreateTempFileName(const wxString& prefix, wxFile *fileTemp)
 578 {
 579     wxString path, dir, name;
 580
 581     // use the directory specified by the prefix
 582     SplitPath(prefix, &dir, &name, NULL /* extension */);
 583
 584 #if defined(__WXWINCE__)
 585     if (dir.empty())
 586     {
 587         // FIXME. Create \temp dir?
 588         dir = wxT("\\");
 589     }
 590     path = dir + wxT("\\") + prefix;
 591     int i = 1;
 592     while (wxFileExists(path))
 593     {
 594         path = dir + wxT("\\") + prefix ;
 595         path << i;
 596         i ++;
 597     }
 598
 599 #elif defined(__WINDOWS__) && !defined(__WXMICROWIN__)
 600
 601     if ( dir.empty() )
 602     {
 603         if ( !::GetTempPath(MAX_PATH, wxStringBuffer(dir, MAX_PATH + 1)) )
 604         {
 605             wxLogLastError(_T("GetTempPath"));
 606         }
 607
 608         if ( dir.empty() )
 609         {
 610             // GetTempFileName() fails if we pass it an empty string
 611             dir = _T('.');
 612         }
 613     }
 614     else // we have a dir to create the file in
 615     {
 616         // ensure we use only the back slashes as GetTempFileName(), unlike all
 617         // the other APIs, is picky and doesn't accept the forward ones
 618         dir.Replace(_T("/"), _T("\\"));
 619     }
 620
 621     if ( !::GetTempFileName(dir, name, 0, wxStringBuffer(path, MAX_PATH + 1)) )
 622     {
 623         wxLogLastError(_T("GetTempFileName"));
 624
 625         path.clear();
 626     }
 627
 628 #else // !Windows
 629     if ( dir.empty() )
 630     {
 631 #if defined(__WXMAC__) && !defined(__DARWIN__)
 632         dir = wxMacFindFolder(  (short) kOnSystemDisk, kTemporaryFolderType, kCreateFolder ) ;
 633 #else // !Mac
 634         dir = wxGetenv(_T("TMP"));
 635         if ( dir.empty() )
 636         {
 637             dir = wxGetenv(_T("TEMP"));
 638         }
 639
 640         if ( dir.empty() )
 641         {
 642             // default
 643             #if defined(__DOS__) || defined(__OS2__)
 644                 dir = _T(".");
 645             #else
 646                 dir = _T("/tmp");
 647             #endif
 648         }
 649 #endif // Mac/!Mac
 650     }
 651
 652     path = dir;
 653
 654     if ( !wxEndsWithPathSeparator(dir) &&
 655             (name.empty() || !wxIsPathSeparator(name[0u])) )
 656     {
 657         path += wxFILE_SEP_PATH;
 658     }
 659
 660     path += name;
 661
 662 #if defined(HAVE_MKSTEMP)
 663     // scratch space for mkstemp()
 664     path += _T("XXXXXX");
 665
 666     // we need to copy the path to the buffer in which mkstemp() can modify it
 667     wxCharBuffer buf( wxConvFile.cWX2MB( path ) );
 668
 669     // cast is safe because the string length doesn't change
 670     int fdTemp = mkstemp( (char*)(const char*) buf );
 671     if ( fdTemp == -1 )
 672     {
 673         // this might be not necessary as mkstemp() on most systems should have
 674         // already done it but it doesn't hurt neither...
 675         path.clear();
 676     }
 677     else // mkstemp() succeeded
 678     {
 679         path = wxConvFile.cMB2WX( (const char*) buf );
 680
 681         // avoid leaking the fd
 682         if ( fileTemp )
 683         {
 684             fileTemp->Attach(fdTemp);
 685         }
 686         else
 687         {
 688             close(fdTemp);
 689         }
 690     }
 691 #else // !HAVE_MKSTEMP
 692
 693 #ifdef HAVE_MKTEMP
 694     // same as above
 695     path += _T("XXXXXX");
 696
 697     wxCharBuffer buf = wxConvFile.cWX2MB( path );
 698     if ( !mktemp( (const char*) buf ) )
 699     {
 700         path.clear();
 701     }
 702     else
 703     {
 704         path = wxConvFile.cMB2WX( (const char*) buf );
 705     }
 706 #else // !HAVE_MKTEMP (includes __DOS__)
 707     // generate the unique file name ourselves
 708     #if !defined(__DOS__) && (!defined(__MWERKS__) || defined(__DARWIN__) )
 709     path << (unsigned int)getpid();
 710     #endif
 711
 712     wxString pathTry;
 713
 714     static const size_t numTries = 1000;
 715     for ( size_t n = 0; n < numTries; n++ )
 716     {
 717         // 3 hex digits is enough for numTries == 1000 < 4096
 718         pathTry = path + wxString::Format(_T("%.03x"), (unsigned int) n);
 719         if ( !wxFile::Exists(pathTry) )
 720         {
 721             break;
 722         }
 723
 724         pathTry.clear();
 725     }
 726
 727     path = pathTry;
 728 #endif // HAVE_MKTEMP/!HAVE_MKTEMP
 729
 730     if ( !path.empty() )
 731     {
 732     }
 733 #endif // HAVE_MKSTEMP/!HAVE_MKSTEMP
 734
 735 #endif // Windows/!Windows
 736
 737     if ( path.empty() )
 738     {
 739         wxLogSysError(_("Failed to create a temporary file name"));
 740     }
 741     else if ( fileTemp && !fileTemp->IsOpened() )
 742     {
 743         // open the file - of course, there is a race condition here, this is
 744         // why we always prefer using mkstemp()...
 745         //
 746         // NB: GetTempFileName() under Windows creates the file, so using
 747         //     write_excl there would fail
 748         if ( !fileTemp->Open(path,
 749 #if defined(__WINDOWS__) && !defined(__WXMICROWIN__)
 750                              wxFile::write,
 751 #else
 752                              wxFile::write_excl,
 753 #endif
 754                              wxS_IRUSR | wxS_IWUSR) )
 755         {
 756             // FIXME: If !ok here should we loop and try again with another
 757             //        file name?  That is the standard recourse if open(O_EXCL)
 758             //        fails, though of course it should be protected against
 759             //        possible infinite looping too.
 760
 761             wxLogError(_("Failed to open temporary file."));
 762
 763             path.clear();
 764         }
 765     }
 766
 767     return path;
 768 }
 769
 770 // ----------------------------------------------------------------------------
 771 // directory operations
 772 // ----------------------------------------------------------------------------
 773
 774 bool wxFileName::Mkdir( int perm, int flags )
 775 {
 776     return wxFileName::Mkdir( GetFullPath(), perm, flags );
 777 }
 778
 779 bool wxFileName::Mkdir( const wxString& dir, int perm, int flags )
 780 {
 781     if ( flags & wxPATH_MKDIR_FULL )
 782     {
 783         // split the path in components
 784         wxFileName filename;
 785         filename.AssignDir(dir);
 786
 787         wxString currPath;
 788         if ( filename.HasVolume())
 789         {
 790             currPath << wxGetVolumeString(filename.GetVolume(), wxPATH_NATIVE);
 791         }
 792
 793         wxArrayString dirs = filename.GetDirs();
 794         size_t count = dirs.GetCount();
 795         for ( size_t i = 0; i < count; i++ )
 796         {
 797             if ( i > 0 ||
 798 #if defined(__WXMAC__) && !defined(__DARWIN__)
 799                         // relative pathnames are exactely the other way round under mac...
 800                 !filename.IsAbsolute()
 801 #else
 802                 filename.IsAbsolute()
 803 #endif
 804             )
 805                 currPath += wxFILE_SEP_PATH;
 806             currPath += dirs[i];
 807
 808             if (!DirExists(currPath))
 809             {
 810                 if (!wxMkdir(currPath, perm))
 811                 {
 812                     // no need to try creating further directories
 813                     return false;
 814                 }
 815             }
 816         }
 817
 818         return true;
 819
 820     }
 821
 822     return ::wxMkdir( dir, perm );
 823 }
 824
 825 bool wxFileName::Rmdir()
 826 {
 827     return wxFileName::Rmdir( GetFullPath() );
 828 }
 829
 830 bool wxFileName::Rmdir( const wxString &dir )
 831 {
 832     return ::wxRmdir( dir );
 833 }
 834
 835 // ----------------------------------------------------------------------------
 836 // path normalization
 837 // ----------------------------------------------------------------------------
 838
 839 bool wxFileName::Normalize(int flags,
 840                            const wxString& cwd,
 841                            wxPathFormat format)
 842 {
 843     // deal with env vars renaming first as this may seriously change the path
 844     if ( flags & wxPATH_NORM_ENV_VARS )
 845     {
 846         wxString pathOrig = GetFullPath(format);
 847         wxString path = wxExpandEnvVars(pathOrig);
 848         if ( path != pathOrig )
 849         {
 850             Assign(path);
 851         }
 852     }
 853
 854
 855     // the existing path components
 856     wxArrayString dirs = GetDirs();
 857
 858     // the path to prepend in front to make the path absolute
 859     wxFileName curDir;
 860
 861     format = GetFormat(format);
 862
 863     // make the path absolute
 864     if ( (flags & wxPATH_NORM_ABSOLUTE) && !IsAbsolute(format) )
 865     {
 866         if ( cwd.empty() )
 867         {
 868             curDir.AssignCwd(GetVolume());
 869         }
 870         else // cwd provided
 871         {
 872             curDir.AssignDir(cwd);
 873         }
 874
 875         // the path may be not absolute because it doesn't have the volume name
 876         // but in this case we shouldn't modify the directory components of it
 877         // but just set the current volume
 878         if ( !HasVolume() && curDir.HasVolume() )
 879         {
 880             SetVolume(curDir.GetVolume());
 881
 882             if ( !m_relative )
 883             {
 884                 // yes, it was the case - we don't need curDir then
 885                 curDir.Clear();
 886             }
 887         }
 888     }
 889
 890     // handle ~ stuff under Unix only
 891     if ( (format == wxPATH_UNIX) && (flags & wxPATH_NORM_TILDE) )
 892     {
 893         if ( !dirs.IsEmpty() )
 894         {
 895             wxString dir = dirs[0u];
 896             if ( !dir.empty() && dir[0u] == _T('~') )
 897             {
 898                 curDir.AssignDir(wxGetUserHome(dir.c_str() + 1));
 899
 900                 dirs.RemoveAt(0u);
 901             }
 902         }
 903     }
 904
 905     // transform relative path into abs one
 906     if ( curDir.IsOk() )
 907     {
 908         wxArrayString dirsNew = curDir.GetDirs();
 909         size_t count = dirs.GetCount();
 910         for ( size_t n = 0; n < count; n++ )
 911         {
 912             dirsNew.Add(dirs[n]);
 913         }
 914
 915         dirs = dirsNew;
 916     }
 917
 918     // now deal with ".", ".." and the rest
 919     m_dirs.Empty();
 920     size_t count = dirs.GetCount();
 921     for ( size_t n = 0; n < count; n++ )
 922     {
 923         wxString dir = dirs[n];
 924
 925         if ( flags & wxPATH_NORM_DOTS )
 926         {
 927             if ( dir == wxT(".") )
 928             {
 929                 // just ignore
 930                 continue;
 931             }
 932
 933             if ( dir == wxT("..") )
 934             {
 935                 if ( m_dirs.IsEmpty() )
 936                 {
 937                     wxLogError(_("The path '%s' contains too many \"..\"!"),
 938                                GetFullPath().c_str());
 939                     return false;
 940                 }
 941
 942                 m_dirs.RemoveAt(m_dirs.GetCount() - 1);
 943                 continue;
 944             }
 945         }
 946
 947         if ( (flags & wxPATH_NORM_CASE) && !IsCaseSensitive(format) )
 948         {
 949             dir.MakeLower();
 950         }
 951
 952         m_dirs.Add(dir);
 953     }
 954
 955 #if defined(__WIN32__) && !defined(__WXWINCE__) && wxUSE_OLE
 956     if ( (flags & wxPATH_NORM_SHORTCUT) )
 957     {
 958         wxString filename;
 959         if (GetShortcutTarget(GetFullPath(format), filename))
 960         {
 961             // Repeat this since we may now have a new path
 962             if ( (flags & wxPATH_NORM_CASE) && !IsCaseSensitive(format) )
 963             {
 964                 filename.MakeLower();
 965             }
 966             m_relative = false;
 967             Assign(filename);
 968         }
 969     }
 970 #endif
 971
 972     if ( (flags & wxPATH_NORM_CASE) && !IsCaseSensitive(format) )
 973     {
 974         // VZ: expand env vars here too?
 975
 976         m_volume.MakeLower();
 977         m_name.MakeLower();
 978         m_ext.MakeLower();
 979     }
 980
 981     // we do have the path now
 982     //
 983     // NB: need to do this before (maybe) calling Assign() below
 984     m_relative = false;
 985
 986 #if defined(__WIN32__)
 987     if ( (flags & wxPATH_NORM_LONG) && (format == wxPATH_DOS) )
 988     {
 989         Assign(GetLongPath());
 990     }
 991 #endif // Win32
 992
 993     return true;
 994 }
 995
 996 // ----------------------------------------------------------------------------
 997 // get the shortcut target
 998 // ----------------------------------------------------------------------------
 999
1000 // WinCE (3) doesn't have CLSID_ShellLink, IID_IShellLink definitions.
1001 // The .lnk file is a plain text file so it should be easy to
1002 // make it work. Hint from Google Groups:
1003 // "If you open up a lnk file, you'll see a
1004 // number, followed by a pound sign (#), followed by more text. The
1005 // number is the number of characters that follows the pound sign. The
1006 // characters after the pound sign are the command line (which _can_
1007 // include arguments) to be executed. Any path (e.g. \windows\program
1008 // files\myapp.exe) that includes spaces needs to be enclosed in
1009 // quotation marks."
1010
1011 #if defined(__WIN32__) && !defined(__WXWINCE__) && wxUSE_OLE
1012 // The following lines are necessary under WinCE
1013 // #include "wx/msw/private.h"
1014 // #include <ole2.h>
1015 #include <shlobj.h>
1016 #if defined(__WXWINCE__)
1017 #include <shlguid.h>
1018 #endif
1019
1020 bool wxFileName::GetShortcutTarget(const wxString& shortcutPath, wxString& targetFilename, wxString* arguments)
1021 {
1022     wxString path, file, ext;
1023     wxSplitPath(shortcutPath, & path, & file, & ext);
1024
1025         HRESULT hres;
1026         IShellLink* psl;
1027     bool success = FALSE;
1028
1029     // Assume it's not a shortcut if it doesn't end with lnk
1030     if (ext.Lower() != wxT("lnk"))
1031         return FALSE;
1032
1033         // create a ShellLink object
1034         hres = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER,
1035                                 IID_IShellLink, (LPVOID*) &psl);
1036
1037         if (SUCCEEDED(hres))
1038         {
1039                 IPersistFile* ppf;
1040                 hres = psl->QueryInterface( IID_IPersistFile, (LPVOID *) &ppf);
1041                 if (SUCCEEDED(hres))
1042                 {
1043                         WCHAR wsz[MAX_PATH];
1044
1045                         MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, shortcutPath.mb_str(), -1, wsz,
1046                 MAX_PATH);
1047
1048                         hres = ppf->Load(wsz, 0);
1049                         if (SUCCEEDED(hres))
1050                         {
1051                 wxChar buf[2048];
1052                                 psl->GetPath(buf, 2048, NULL, SLGP_UNCPRIORITY);
1053                                 targetFilename = wxString(buf);
1054                 success = (shortcutPath != targetFilename);
1055
1056                                 psl->GetArguments(buf, 2048);
1057                 wxString args(buf);
1058                 if (!args.IsEmpty() && arguments)
1059                 {
1060                     *arguments = args;
1061                 }
1062                         }
1063                 }
1064         }
1065         psl->Release();
1066         return success;
1067 }
1068 #endif
1069
1070
1071 // ----------------------------------------------------------------------------
1072 // absolute/relative paths
1073 // ----------------------------------------------------------------------------
1074
1075 bool wxFileName::IsAbsolute(wxPathFormat format) const
1076 {
1077     // if our path doesn't start with a path separator, it's not an absolute
1078     // path
1079     if ( m_relative )
1080         return false;
1081
1082     if ( !GetVolumeSeparator(format).empty() )
1083     {
1084         // this format has volumes and an absolute path must have one, it's not
1085         // enough to have the full path to bean absolute file under Windows
1086         if ( GetVolume().empty() )
1087             return false;
1088     }
1089
1090     return true;
1091 }
1092
1093 bool wxFileName::MakeRelativeTo(const wxString& pathBase, wxPathFormat format)
1094 {
1095     wxFileName fnBase = wxFileName::DirName(pathBase, format);
1096
1097     // get cwd only once - small time saving
1098     wxString cwd = wxGetCwd();
1099     Normalize(wxPATH_NORM_ALL & ~wxPATH_NORM_CASE, cwd, format);
1100     fnBase.Normalize(wxPATH_NORM_ALL & ~wxPATH_NORM_CASE, cwd, format);
1101
1102     bool withCase = IsCaseSensitive(format);
1103
1104     // we can't do anything if the files live on different volumes
1105     if ( !GetVolume().IsSameAs(fnBase.GetVolume(), withCase) )
1106     {
1107         // nothing done
1108         return false;
1109     }
1110
1111     // same drive, so we don't need our volume
1112     m_volume.clear();
1113
1114     // remove common directories starting at the top
1115     while ( !m_dirs.IsEmpty() && !fnBase.m_dirs.IsEmpty() &&
1116                 m_dirs[0u].IsSameAs(fnBase.m_dirs[0u], withCase) )
1117     {
1118         m_dirs.RemoveAt(0);
1119         fnBase.m_dirs.RemoveAt(0);
1120     }
1121
1122     // add as many ".." as needed
1123     size_t count = fnBase.m_dirs.GetCount();
1124     for ( size_t i = 0; i < count; i++ )
1125     {
1126         m_dirs.Insert(wxT(".."), 0u);
1127     }
1128
1129     if ( format == wxPATH_UNIX || format == wxPATH_DOS )
1130     {
1131         // a directory made relative with respect to itself is '.' under Unix
1132         // and DOS, by definition (but we don't have to insert "./" for the
1133         // files)
1134         if ( m_dirs.IsEmpty() && IsDir() )
1135         {
1136             m_dirs.Add(_T('.'));
1137         }
1138     }
1139
1140     m_relative = true;
1141
1142     // we were modified
1143     return true;
1144 }
1145
1146 // ----------------------------------------------------------------------------
1147 // filename kind tests
1148 // ----------------------------------------------------------------------------
1149
1150 bool wxFileName::SameAs(const wxFileName& filepath, wxPathFormat format) const
1151 {
1152     wxFileName fn1 = *this,
1153                fn2 = filepath;
1154
1155     // get cwd only once - small time saving
1156     wxString cwd = wxGetCwd();
1157     fn1.Normalize(wxPATH_NORM_ALL | wxPATH_NORM_CASE, cwd, format);
1158     fn2.Normalize(wxPATH_NORM_ALL | wxPATH_NORM_CASE, cwd, format);
1159
1160     if ( fn1.GetFullPath() == fn2.GetFullPath() )
1161         return true;
1162
1163     // TODO: compare inodes for Unix, this works even when filenames are
1164     //       different but files are the same (symlinks) (VZ)
1165
1166     return false;
1167 }
1168
1169 /* static */
1170 bool wxFileName::IsCaseSensitive( wxPathFormat format )
1171 {
1172     // only Unix filenames are truely case-sensitive
1173     return GetFormat(format) == wxPATH_UNIX;
1174 }
1175
1176 /* static */
1177 wxString wxFileName::GetForbiddenChars(wxPathFormat format)
1178 {
1179     // Inits to forbidden characters that are common to (almost) all platforms.
1180     wxString strForbiddenChars = wxT("*?");
1181
1182     // If asserts, wxPathFormat has been changed. In case of a new path format
1183     // addition, the following code might have to be updated.
1184     wxCOMPILE_TIME_ASSERT(wxPATH_MAX == 5, wxPathFormatChanged);
1185     switch ( GetFormat(format) )
1186     {
1187         default :
1188             wxFAIL_MSG( wxT("Unknown path format") );
1189             // !! Fall through !!
1190
1191         case wxPATH_UNIX:
1192             break;
1193
1194         case wxPATH_MAC:
1195             // On a Mac even names with * and ? are allowed (Tested with OS
1196             // 9.2.1 and OS X 10.2.5)
1197             strForbiddenChars = wxEmptyString;
1198             break;
1199
1200         case wxPATH_DOS:
1201             strForbiddenChars += wxT("\\/:\"<>|");
1202             break;
1203
1204         case wxPATH_VMS:
1205             break;
1206     }
1207
1208     return strForbiddenChars;
1209 }
1210
1211 /* static */
1212 wxString wxFileName::GetVolumeSeparator(wxPathFormat format)
1213 {
1214     wxString sepVol;
1215
1216     if ( (GetFormat(format) == wxPATH_DOS) ||
1217          (GetFormat(format) == wxPATH_VMS) )
1218     {
1219         sepVol = wxFILE_SEP_DSK;
1220     }
1221     //else: leave empty
1222
1223     return sepVol;
1224 }
1225
1226 /* static */
1227 wxString wxFileName::GetPathSeparators(wxPathFormat format)
1228 {
1229     wxString seps;
1230     switch ( GetFormat(format) )
1231     {
1232         case wxPATH_DOS:
1233             // accept both as native APIs do but put the native one first as
1234             // this is the one we use in GetFullPath()
1235             seps << wxFILE_SEP_PATH_DOS << wxFILE_SEP_PATH_UNIX;
1236             break;
1237
1238         default:
1239             wxFAIL_MSG( _T("Unknown wxPATH_XXX style") );
1240             // fall through
1241
1242         case wxPATH_UNIX:
1243             seps = wxFILE_SEP_PATH_UNIX;
1244             break;
1245
1246         case wxPATH_MAC:
1247             seps = wxFILE_SEP_PATH_MAC;
1248             break;
1249
1250         case wxPATH_VMS:
1251             seps = wxFILE_SEP_PATH_VMS;
1252             break;
1253     }
1254
1255     return seps;
1256 }
1257
1258 /* static */
1259 wxString wxFileName::GetPathTerminators(wxPathFormat format)
1260 {
1261     format = GetFormat(format);
1262
1263     // under VMS the end of the path is ']', not the path separator used to
1264     // separate the components
1265     return format == wxPATH_VMS ? wxString(_T(']')) : GetPathSeparators(format);
1266 }
1267
1268 /* static */
1269 bool wxFileName::IsPathSeparator(wxChar ch, wxPathFormat format)
1270 {
1271     // wxString::Find() doesn't work as expected with NUL - it will always find
1272     // it, so it is almost surely a bug if this function is called with NUL arg
1273     wxASSERT_MSG( ch != _T('\0'), _T("shouldn't be called with NUL") );
1274
1275     return GetPathSeparators(format).Find(ch) != wxNOT_FOUND;
1276 }
1277
1278 // ----------------------------------------------------------------------------
1279 // path components manipulation
1280 // ----------------------------------------------------------------------------
1281
1282 /* static */ bool wxFileName::IsValidDirComponent(const wxString& dir)
1283 {
1284     if ( dir.empty() )
1285     {
1286         wxFAIL_MSG( _T("empty directory passed to wxFileName::InsertDir()") );
1287
1288         return false;
1289     }
1290
1291     const size_t len = dir.length();
1292     for ( size_t n = 0; n < len; n++ )
1293     {
1294         if ( dir[n] == GetVolumeSeparator() || IsPathSeparator(dir[n]) )
1295         {
1296             wxFAIL_MSG( _T("invalid directory component in wxFileName") );
1297
1298             return false;
1299         }
1300     }
1301
1302     return true;
1303 }
1304
1305 void wxFileName::AppendDir( const wxString &dir )
1306 {
1307     if ( IsValidDirComponent(dir) )
1308         m_dirs.Add( dir );
1309 }
1310
1311 void wxFileName::PrependDir( const wxString &dir )
1312 {
1313     InsertDir(0, dir);
1314 }
1315
1316 void wxFileName::InsertDir( int before, const wxString &dir )
1317 {
1318     if ( IsValidDirComponent(dir) )
1319         m_dirs.Insert( dir, before );
1320 }
1321
1322 void wxFileName::RemoveDir( int pos )
1323 {
1324     m_dirs.RemoveAt( (size_t)pos );
1325 }
1326
1327 // ----------------------------------------------------------------------------
1328 // accessors
1329 // ----------------------------------------------------------------------------
1330
1331 void wxFileName::SetFullName(const wxString& fullname)
1332 {
1333     SplitPath(fullname, NULL /* no path */, &m_name, &m_ext);
1334 }
1335
1336 wxString wxFileName::GetFullName() const
1337 {
1338     wxString fullname = m_name;
1339     if ( !m_ext.empty() )
1340     {
1341         fullname << wxFILE_SEP_EXT << m_ext;
1342     }
1343
1344     return fullname;
1345 }
1346
1347 wxString wxFileName::GetPath( int flags, wxPathFormat format ) const
1348 {
1349     format = GetFormat( format );
1350
1351     wxString fullpath;
1352
1353     // return the volume with the path as well if requested
1354     if ( flags & wxPATH_GET_VOLUME )
1355     {
1356         fullpath += wxGetVolumeString(GetVolume(), format);
1357     }
1358
1359     // the leading character
1360     switch ( format )
1361     {
1362         case wxPATH_MAC:
1363             if ( m_relative )
1364                 fullpath += wxFILE_SEP_PATH_MAC;
1365             break;
1366
1367         case wxPATH_DOS:
1368             if ( !m_relative )
1369                 fullpath += wxFILE_SEP_PATH_DOS;
1370             break;
1371
1372         default:
1373             wxFAIL_MSG( wxT("Unknown path format") );
1374             // fall through
1375
1376         case wxPATH_UNIX:
1377             if ( !m_relative )
1378             {
1379                 // normally the absolute file names start with a slash
1380                 // with one exception: the ones like "~/foo.bar" don't
1381                 // have it
1382                 if ( m_dirs.IsEmpty() || m_dirs[0u] != _T('~') )
1383                 {
1384                     fullpath += wxFILE_SEP_PATH_UNIX;
1385                 }
1386             }
1387             break;
1388
1389         case wxPATH_VMS:
1390             // no leading character here but use this place to unset
1391             // wxPATH_GET_SEPARATOR flag: under VMS it doesn't make sense
1392             // as, if I understand correctly, there should never be a dot
1393             // before the closing bracket
1394             flags &= ~wxPATH_GET_SEPARATOR;
1395     }
1396
1397     if ( m_dirs.empty() )
1398     {
1399         // there is nothing more
1400         return fullpath;
1401     }
1402
1403     // then concatenate all the path components using the path separator
1404     if ( format == wxPATH_VMS )
1405     {
1406         fullpath += wxT('[');
1407     }
1408
1409     const size_t dirCount = m_dirs.GetCount();
1410     for ( size_t i = 0; i < dirCount; i++ )
1411     {
1412         switch (format)
1413         {
1414             case wxPATH_MAC:
1415                 if ( m_dirs[i] == wxT(".") )
1416                 {
1417                     // skip appending ':', this shouldn't be done in this
1418                     // case as "::" is interpreted as ".." under Unix
1419                     continue;
1420                 }
1421
1422                 // convert back from ".." to nothing
1423                 if ( m_dirs[i] != wxT("..") )
1424                      fullpath += m_dirs[i];
1425                 break;
1426
1427             default:
1428                 wxFAIL_MSG( wxT("Unexpected path format") );
1429                 // still fall through
1430
1431             case wxPATH_DOS:
1432             case wxPATH_UNIX:
1433                 fullpath += m_dirs[i];
1434                 break;
1435
1436             case wxPATH_VMS:
1437                 // TODO: What to do with ".." under VMS
1438
1439                 // convert back from ".." to nothing
1440                 if ( m_dirs[i] != wxT("..") )
1441                     fullpath += m_dirs[i];
1442                 break;
1443         }
1444
1445         if ( (flags & wxPATH_GET_SEPARATOR) || (i != dirCount - 1) )
1446             fullpath += GetPathSeparator(format);
1447     }
1448
1449     if ( format == wxPATH_VMS )
1450     {
1451         fullpath += wxT(']');
1452     }
1453
1454     return fullpath;
1455 }
1456
1457 wxString wxFileName::GetFullPath( wxPathFormat format ) const
1458 {
1459     // we already have a function to get the path
1460     wxString fullpath = GetPath(wxPATH_GET_VOLUME | wxPATH_GET_SEPARATOR,
1461                                 format);
1462
1463     // now just add the file name and extension to it
1464     fullpath += GetFullName();
1465
1466     return fullpath;
1467 }
1468
1469 // Return the short form of the path (returns identity on non-Windows platforms)
1470 wxString wxFileName::GetShortPath() const
1471 {
1472 #if defined(__WXMSW__) && defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
1473     wxString path(GetFullPath());
1474     wxString pathOut;
1475     DWORD sz = ::GetShortPathName(path, NULL, 0);
1476     bool ok = sz != 0;
1477     if ( ok )
1478     {
1479         ok = ::GetShortPathName
1480                (
1481                 path,
1482                 wxStringBuffer(pathOut, sz),
1483                 sz
1484                ) != 0;
1485     }
1486     if (ok)
1487         return pathOut;
1488
1489     return path;
1490 #else
1491     return GetFullPath();
1492 #endif
1493 }
1494
1495 // Return the long form of the path (returns identity on non-Windows platforms)
1496 wxString wxFileName::GetLongPath() const
1497 {
1498     wxString pathOut,
1499              path = GetFullPath();
1500
1501 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
1502     bool success = false;
1503
1504 #if wxUSE_DYNAMIC_LOADER
1505     typedef DWORD (WINAPI *GET_LONG_PATH_NAME)(const wxChar *, wxChar *, DWORD);
1506
1507     static bool s_triedToLoad = false;
1508
1509     if ( !s_triedToLoad )
1510     {
1511         // suppress the errors about missing GetLongPathName[AW]
1512         wxLogNull noLog;
1513
1514         s_triedToLoad = true;
1515         wxDynamicLibrary dllKernel(_T("kernel32"));
1516         if ( dllKernel.IsLoaded() )
1517         {
1518             // may succeed or fail depending on the Windows version
1519             static GET_LONG_PATH_NAME s_pfnGetLongPathName = NULL;
1520 #ifdef _UNICODE
1521             s_pfnGetLongPathName = (GET_LONG_PATH_NAME) dllKernel.GetSymbol(_T("GetLongPathNameW"));
1522 #else
1523             s_pfnGetLongPathName = (GET_LONG_PATH_NAME) dllKernel.GetSymbol(_T("GetLongPathNameA"));
1524 #endif
1525
1526             if ( s_pfnGetLongPathName )
1527             {
1528                 DWORD dwSize = (*s_pfnGetLongPathName)(path, NULL, 0);
1529                 bool ok = dwSize > 0;
1530
1531                 if ( ok )
1532                 {
1533                     DWORD sz = (*s_pfnGetLongPathName)(path, NULL, 0);
1534                     ok = sz != 0;
1535                     if ( ok )
1536                     {
1537                         ok = (*s_pfnGetLongPathName)
1538                                 (
1539                                 path,
1540                                 wxStringBuffer(pathOut, sz),
1541                                 sz
1542                                 ) != 0;
1543                         success = true;
1544                     }
1545                 }
1546             }
1547         }
1548     }
1549
1550     if (success)
1551         return pathOut;
1552 #endif // wxUSE_DYNAMIC_LOADER
1553
1554     if (!success)
1555     {
1556         // The OS didn't support GetLongPathName, or some other error.
1557         // We need to call FindFirstFile on each component in turn.
1558
1559         WIN32_FIND_DATA findFileData;
1560         HANDLE hFind;
1561
1562         if ( HasVolume() )
1563             pathOut = GetVolume() +
1564                       GetVolumeSeparator(wxPATH_DOS) +
1565                       GetPathSeparator(wxPATH_DOS);
1566         else
1567             pathOut = wxEmptyString;
1568
1569         wxArrayString dirs = GetDirs();
1570         dirs.Add(GetFullName());
1571
1572         wxString tmpPath;
1573
1574         size_t count = dirs.GetCount();
1575         for ( size_t i = 0; i < count; i++ )
1576         {
1577             // We're using pathOut to collect the long-name path, but using a
1578             // temporary for appending the last path component which may be
1579             // short-name
1580             tmpPath = pathOut + dirs[i];
1581
1582             if ( tmpPath.empty() )
1583                 continue;
1584
1585             // can't see this being necessary? MF
1586             if ( tmpPath.Last() == GetVolumeSeparator(wxPATH_DOS) )
1587             {
1588                 // Can't pass a drive and root dir to FindFirstFile,
1589                 // so continue to next dir
1590                 tmpPath += wxFILE_SEP_PATH;
1591                 pathOut = tmpPath;
1592                 continue;
1593             }
1594
1595             hFind = ::FindFirstFile(tmpPath, &findFileData);
1596             if (hFind == INVALID_HANDLE_VALUE)
1597             {
1598                 // Error: most likely reason is that path doesn't exist, so
1599                 // append any unprocessed parts and return
1600                 for ( i += 1; i < count; i++ )
1601                     tmpPath += wxFILE_SEP_PATH + dirs[i];
1602
1603                 return tmpPath;
1604             }
1605
1606             pathOut += findFileData.cFileName;
1607             if ( (i < (count-1)) )
1608                 pathOut += wxFILE_SEP_PATH;
1609
1610             ::FindClose(hFind);
1611         }
1612     }
1613 #else // !Win32
1614     pathOut = path;
1615 #endif // Win32/!Win32
1616
1617     return pathOut;
1618 }
1619
1620 wxPathFormat wxFileName::GetFormat( wxPathFormat format )
1621 {
1622     if (format == wxPATH_NATIVE)
1623     {
1624 #if defined(__WXMSW__) || defined(__OS2__) || defined(__DOS__)
1625         format = wxPATH_DOS;
1626 #elif defined(__WXMAC__) && !defined(__DARWIN__)
1627         format = wxPATH_MAC;
1628 #elif defined(__VMS)
1629         format = wxPATH_VMS;
1630 #else
1631         format = wxPATH_UNIX;
1632 #endif
1633     }
1634     return format;
1635 }
1636
1637 // ----------------------------------------------------------------------------
1638 // path splitting function
1639 // ----------------------------------------------------------------------------
1640
1641 /* static */
1642 void
1643 wxFileName::SplitVolume(const wxString& fullpathWithVolume,
1644                         wxString *pstrVolume,
1645                         wxString *pstrPath,
1646                         wxPathFormat format)
1647 {
1648     format = GetFormat(format);
1649
1650     wxString fullpath = fullpathWithVolume;
1651
1652     // special Windows UNC paths hack: transform \\share\path into share:path
1653     if ( format == wxPATH_DOS )
1654     {
1655         if ( fullpath.length() >= 4 &&
1656                 fullpath[0u] == wxFILE_SEP_PATH_DOS &&
1657                     fullpath[1u] == wxFILE_SEP_PATH_DOS )
1658         {
1659             fullpath.erase(0, 2);
1660
1661             size_t posFirstSlash =
1662                 fullpath.find_first_of(GetPathTerminators(format));
1663             if ( posFirstSlash != wxString::npos )
1664             {
1665                 fullpath[posFirstSlash] = wxFILE_SEP_DSK;
1666
1667                 // UNC paths are always absolute, right? (FIXME)
1668                 fullpath.insert(posFirstSlash + 1, 1, wxFILE_SEP_PATH_DOS);
1669             }
1670         }
1671     }
1672
1673     // We separate the volume here
1674     if ( format == wxPATH_DOS || format == wxPATH_VMS )
1675     {
1676         wxString sepVol = GetVolumeSeparator(format);
1677
1678         size_t posFirstColon = fullpath.find_first_of(sepVol);
1679         if ( posFirstColon != wxString::npos )
1680         {
1681             if ( pstrVolume )
1682             {
1683                 *pstrVolume = fullpath.Left(posFirstColon);
1684             }
1685
1686             // remove the volume name and the separator from the full path
1687             fullpath.erase(0, posFirstColon + sepVol.length());
1688         }
1689     }
1690
1691     if ( pstrPath )
1692         *pstrPath = fullpath;
1693 }
1694
1695 /* static */
1696 void wxFileName::SplitPath(const wxString& fullpathWithVolume,
1697                            wxString *pstrVolume,
1698                            wxString *pstrPath,
1699                            wxString *pstrName,
1700                            wxString *pstrExt,
1701                            wxPathFormat format)
1702 {
1703     format = GetFormat(format);
1704
1705     wxString fullpath;
1706     SplitVolume(fullpathWithVolume, pstrVolume, &fullpath, format);
1707
1708     // find the positions of the last dot and last path separator in the path
1709     size_t posLastDot = fullpath.find_last_of(wxFILE_SEP_EXT);
1710     size_t posLastSlash = fullpath.find_last_of(GetPathTerminators(format));
1711
1712     // check whether this dot occurs at the very beginning of a path component
1713     if ( (posLastDot != wxString::npos) &&
1714          (posLastDot == 0 ||
1715             IsPathSeparator(fullpath[posLastDot - 1]) ||
1716             (format == wxPATH_VMS && fullpath[posLastDot - 1] == _T(']'))) )
1717     {
1718         // dot may be (and commonly -- at least under Unix -- is) the first
1719         // character of the filename, don't treat the entire filename as
1720         // extension in this case
1721         posLastDot = wxString::npos;
1722     }
1723
1724     // if we do have a dot and a slash, check that the dot is in the name part
1725     if ( (posLastDot != wxString::npos) &&
1726          (posLastSlash != wxString::npos) &&
1727          (posLastDot < posLastSlash) )
1728     {
1729         // the dot is part of the path, not the start of the extension
1730         posLastDot = wxString::npos;
1731     }
1732
1733     // now fill in the variables provided by user
1734     if ( pstrPath )
1735     {
1736         if ( posLastSlash == wxString::npos )
1737         {
1738             // no path at all
1739             pstrPath->Empty();
1740         }
1741         else
1742         {
1743             // take everything up to the path separator but take care to make
1744             // the path equal to something like '/', not empty, for the files
1745             // immediately under root directory
1746             size_t len = posLastSlash;
1747
1748             // this rule does not apply to mac since we do not start with colons (sep)
1749             // except for relative paths
1750             if ( !len && format != wxPATH_MAC)
1751                 len++;
1752
1753             *pstrPath = fullpath.Left(len);
1754
1755             // special VMS hack: remove the initial bracket
1756             if ( format == wxPATH_VMS )
1757             {
1758                 if ( (*pstrPath)[0u] == _T('[') )
1759                     pstrPath->erase(0, 1);
1760             }
1761         }
1762     }
1763
1764     if ( pstrName )
1765     {
1766         // take all characters starting from the one after the last slash and
1767         // up to, but excluding, the last dot
1768         size_t nStart = posLastSlash == wxString::npos ? 0 : posLastSlash + 1;
1769         size_t count;
1770         if ( posLastDot == wxString::npos )
1771         {
1772             // take all until the end
1773             count = wxString::npos;
1774         }
1775         else if ( posLastSlash == wxString::npos )
1776         {
1777             count = posLastDot;
1778         }
1779         else // have both dot and slash
1780         {
1781             count = posLastDot - posLastSlash - 1;
1782         }
1783
1784         *pstrName = fullpath.Mid(nStart, count);
1785     }
1786
1787     if ( pstrExt )
1788     {
1789         if ( posLastDot == wxString::npos )
1790         {
1791             // no extension
1792             pstrExt->Empty();
1793         }
1794         else
1795         {
1796             // take everything after the dot
1797             *pstrExt = fullpath.Mid(posLastDot + 1);
1798         }
1799     }
1800 }
1801
1802 /* static */
1803 void wxFileName::SplitPath(const wxString& fullpath,
1804                            wxString *path,
1805                            wxString *name,
1806                            wxString *ext,
1807                            wxPathFormat format)
1808 {
1809     wxString volume;
1810     SplitPath(fullpath, &volume, path, name, ext, format);
1811
1812     if ( path )
1813     {
1814         path->Prepend(wxGetVolumeString(volume, format));
1815     }
1816 }
1817
1818 // ----------------------------------------------------------------------------
1819 // time functions
1820 // ----------------------------------------------------------------------------
1821
1822 #if wxUSE_DATETIME
1823
1824 bool wxFileName::SetTimes(const wxDateTime *dtAccess,
1825                           const wxDateTime *dtMod,
1826                           const wxDateTime *dtCreate)
1827 {
1828 #if defined(__WIN32__)
1829     if ( IsDir() )
1830     {
1831         // VZ: please let me know how to do this if you can
1832         wxFAIL_MSG( _T("SetTimes() not implemented for the directories") );
1833     }
1834     else // file
1835     {
1836         wxFileHandle fh(GetFullPath(), wxFileHandle::Write);
1837         if ( fh.IsOk() )
1838         {
1839             FILETIME ftAccess, ftCreate, ftWrite;
1840
1841             if ( dtCreate )
1842                 ConvertWxToFileTime(&ftCreate, *dtCreate);
1843             if ( dtAccess )
1844                 ConvertWxToFileTime(&ftAccess, *dtAccess);
1845             if ( dtMod )
1846                 ConvertWxToFileTime(&ftWrite, *dtMod);
1847
1848             if ( ::SetFileTime(fh,
1849                                dtCreate ? &ftCreate : NULL,
1850                                dtAccess ? &ftAccess : NULL,
1851                                dtMod ? &ftWrite : NULL) )
1852             {
1853                 return true;
1854             }
1855         }
1856     }
1857 #elif defined(__UNIX_LIKE__) || (defined(__DOS__) && defined(__WATCOMC__))
1858     if ( !dtAccess && !dtMod )
1859     {
1860         // can't modify the creation time anyhow, don't try
1861         return true;
1862     }
1863
1864     // if dtAccess or dtMod is not specified, use the other one (which must be
1865     // non NULL because of the test above) for both times
1866     utimbuf utm;
1867     utm.actime = dtAccess ? dtAccess->GetTicks() : dtMod->GetTicks();
1868     utm.modtime = dtMod ? dtMod->GetTicks() : dtAccess->GetTicks();
1869     if ( utime(GetFullPath().fn_str(), &utm) == 0 )
1870     {
1871         return true;
1872     }
1873 #else // other platform
1874 #endif // platforms
1875
1876     wxLogSysError(_("Failed to modify file times for '%s'"),
1877                   GetFullPath().c_str());
1878
1879     return false;
1880 }
1881
1882 bool wxFileName::Touch()
1883 {
1884 #if defined(__UNIX_LIKE__)
1885     // under Unix touching file is simple: just pass NULL to utime()
1886     if ( utime(GetFullPath().fn_str(), NULL) == 0 )
1887     {
1888         return true;
1889     }
1890
1891     wxLogSysError(_("Failed to touch the file '%s'"), GetFullPath().c_str());
1892
1893     return false;
1894 #else // other platform
1895     wxDateTime dtNow = wxDateTime::Now();
1896
1897     return SetTimes(&dtNow, &dtNow, NULL /* don't change create time */);
1898 #endif // platforms
1899 }
1900
1901 bool wxFileName::GetTimes(wxDateTime *dtAccess,
1902                           wxDateTime *dtMod,
1903                           wxDateTime *dtCreate) const
1904 {
1905 #if defined(__WIN32__)
1906     // we must use different methods for the files and directories under
1907     // Windows as CreateFile(GENERIC_READ) doesn't work for the directories and
1908     // CreateFile(FILE_FLAG_BACKUP_SEMANTICS) works -- but only under NT and
1909     // not 9x
1910     bool ok;
1911     FILETIME ftAccess, ftCreate, ftWrite;
1912     if ( IsDir() )
1913     {
1914         // implemented in msw/dir.cpp
1915         extern bool wxGetDirectoryTimes(const wxString& dirname,
1916                                         FILETIME *, FILETIME *, FILETIME *);
1917
1918         // we should pass the path without the trailing separator to
1919         // wxGetDirectoryTimes()
1920         ok = wxGetDirectoryTimes(GetPath(wxPATH_GET_VOLUME),
1921                                  &ftAccess, &ftCreate, &ftWrite);
1922     }
1923     else // file
1924     {
1925         wxFileHandle fh(GetFullPath(), wxFileHandle::Read);
1926         if ( fh.IsOk() )
1927         {
1928             ok = ::GetFileTime(fh,
1929                                dtCreate ? &ftCreate : NULL,
1930                                dtAccess ? &ftAccess : NULL,
1931                                dtMod ? &ftWrite : NULL) != 0;
1932         }
1933         else
1934         {
1935             ok = false;
1936         }
1937     }
1938
1939     if ( ok )
1940     {
1941         if ( dtCreate )
1942             ConvertFileTimeToWx(dtCreate, ftCreate);
1943         if ( dtAccess )
1944             ConvertFileTimeToWx(dtAccess, ftAccess);
1945         if ( dtMod )
1946             ConvertFileTimeToWx(dtMod, ftWrite);
1947
1948         return true;
1949     }
1950 #elif defined(__UNIX_LIKE__) || defined(__WXMAC__) || (defined(__DOS__) && defined(__WATCOMC__))
1951     wxStructStat stBuf;
1952     if ( wxStat( GetFullPath().c_str(), &stBuf) == 0 )
1953     {
1954         if ( dtAccess )
1955             dtAccess->Set(stBuf.st_atime);
1956         if ( dtMod )
1957             dtMod->Set(stBuf.st_mtime);
1958         if ( dtCreate )
1959             dtCreate->Set(stBuf.st_ctime);
1960
1961         return true;
1962     }
1963 #else // other platform
1964 #endif // platforms
1965
1966     wxLogSysError(_("Failed to retrieve file times for '%s'"),
1967                   GetFullPath().c_str());
1968
1969     return false;
1970 }
1971
1972 #endif // wxUSE_DATETIME
1973
1974 #ifdef __WXMAC__
1975
1976 const short kMacExtensionMaxLength = 16 ;
1977 class MacDefaultExtensionRecord
1978 {
1979 public :
1980   MacDefaultExtensionRecord()
1981   {
1982     m_ext[0] = 0 ;
1983     m_type = m_creator = NULL ;
1984   }
1985   MacDefaultExtensionRecord( const MacDefaultExtensionRecord& from )
1986   {
1987     wxStrcpy( m_ext , from.m_ext ) ;
1988     m_type = from.m_type ;
1989     m_creator = from.m_creator ;
1990   }
1991   MacDefaultExtensionRecord( const wxChar * extension , OSType type , OSType creator )
1992   {
1993     wxStrncpy( m_ext , extension , kMacExtensionMaxLength ) ;
1994     m_ext[kMacExtensionMaxLength] = 0 ;
1995     m_type = type ;
1996     m_creator = creator ;
1997   }
1998   wxChar m_ext[kMacExtensionMaxLength] ;
1999   OSType m_type ;
2000   OSType m_creator ;
2001 }  ;
2002
2003 #include "wx/dynarray.h"
2004 WX_DECLARE_OBJARRAY(MacDefaultExtensionRecord, MacDefaultExtensionArray) ;
2005
2006 bool gMacDefaultExtensionsInited = false ;
2007
2008 #include "wx/arrimpl.cpp"
2009
2010 WX_DEFINE_EXPORTED_OBJARRAY(MacDefaultExtensionArray) ;
2011
2012 MacDefaultExtensionArray gMacDefaultExtensions ;
2013
2014 // load the default extensions
2015 MacDefaultExtensionRecord gDefaults[] =
2016 {
2017     MacDefaultExtensionRecord( wxT("txt") , 'TEXT' , 'ttxt' ) ,
2018     MacDefaultExtensionRecord( wxT("tif") , 'TIFF' , '****' ) ,
2019     MacDefaultExtensionRecord( wxT("jpg") , 'JPEG' , '****' ) ,
2020 } ;
2021
2022 static void MacEnsureDefaultExtensionsLoaded()
2023 {
2024     if ( !gMacDefaultExtensionsInited )
2025     {
2026         // we could load the pc exchange prefs here too
2027         for ( size_t i = 0 ; i < WXSIZEOF( gDefaults ) ; ++i )
2028         {
2029             gMacDefaultExtensions.Add( gDefaults[i] ) ;
2030         }
2031         gMacDefaultExtensionsInited = true ;
2032     }
2033 }
2034
2035 bool wxFileName::MacSetTypeAndCreator( wxUint32 type , wxUint32 creator )
2036 {
2037     FSRef fsRef ;
2038     FSCatalogInfo catInfo;
2039     FileInfo *finfo ;
2040
2041     if ( wxMacPathToFSRef( GetFullPath() , &fsRef ) == noErr )
2042     {
2043             if ( FSGetCatalogInfo (&fsRef, kFSCatInfoFinderInfo, &catInfo, NULL, NULL, NULL) == noErr )
2044             {
2045                 finfo = (FileInfo*)&catInfo.finderInfo;
2046                     finfo->fileType = type ;
2047                     finfo->fileCreator = creator ;
2048                     FSSetCatalogInfo( &fsRef, kFSCatInfoFinderInfo, &catInfo ) ;
2049             return true ;
2050             }
2051     }
2052     return false ;
2053 }
2054
2055 bool wxFileName::MacGetTypeAndCreator( wxUint32 *type , wxUint32 *creator )
2056 {
2057     FSRef fsRef ;
2058     FSCatalogInfo catInfo;
2059     FileInfo *finfo ;
2060
2061     if ( wxMacPathToFSRef( GetFullPath() , &fsRef ) == noErr )
2062     {
2063             if ( FSGetCatalogInfo (&fsRef, kFSCatInfoFinderInfo, &catInfo, NULL, NULL, NULL) == noErr )
2064             {
2065                 finfo = (FileInfo*)&catInfo.finderInfo;
2066                     *type = finfo->fileType ;
2067                     *creator = finfo->fileCreator ;
2068             return true ;
2069             }
2070     }
2071     return false ;
2072 }
2073
2074 bool wxFileName::MacSetDefaultTypeAndCreator()
2075 {
2076     wxUint32 type , creator ;
2077     if ( wxFileName::MacFindDefaultTypeAndCreator(GetExt() , &type ,
2078       &creator ) )
2079     {
2080         return MacSetTypeAndCreator( type , creator ) ;
2081     }
2082     return false;
2083 }
2084
2085 bool wxFileName::MacFindDefaultTypeAndCreator( const wxString& ext , wxUint32 *type , wxUint32 *creator )
2086 {
2087   MacEnsureDefaultExtensionsLoaded() ;
2088   wxString extl = ext.Lower() ;
2089   for( int i = gMacDefaultExtensions.Count() - 1 ; i >= 0 ; --i )
2090   {
2091     if ( gMacDefaultExtensions.Item(i).m_ext == extl )
2092     {
2093       *type = gMacDefaultExtensions.Item(i).m_type ;
2094       *creator = gMacDefaultExtensions.Item(i).m_creator ;
2095       return true ;
2096     }
2097   }
2098   return false ;
2099 }
2100
2101 void wxFileName::MacRegisterDefaultTypeAndCreator( const wxString& ext , wxUint32 type , wxUint32 creator )
2102 {
2103   MacEnsureDefaultExtensionsLoaded() ;
2104   MacDefaultExtensionRecord rec ;
2105   rec.m_type = type ;
2106   rec.m_creator = creator ;
2107   wxStrncpy( rec.m_ext , ext.Lower().c_str() , kMacExtensionMaxLength ) ;
2108   gMacDefaultExtensions.Add( rec ) ;
2109 }
2110 #endif