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 specyfication
  51                  . separator between directory and subdirectory
  52                  ] between directory and file
  53  */
  54
  55 // ============================================================================
  56 // declarations
  57 // ============================================================================
  58
  59 // ----------------------------------------------------------------------------
  60 // headers
  61 // ----------------------------------------------------------------------------
  62
  63 #ifdef __GNUG__
  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 #define MAX_PATH _MAX_PATH
 139 #endif
 140
 141 // ----------------------------------------------------------------------------
 142 // private classes
 143 // ----------------------------------------------------------------------------
 144
 145 // small helper class which opens and closes the file - we use it just to get
 146 // a file handle for the given file name to pass it to some Win32 API function
 147 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
 148
 149 class wxFileHandle
 150 {
 151 public:
 152     enum OpenMode
 153     {
 154         Read,
 155         Write
 156     };
 157
 158     wxFileHandle(const wxString& filename, OpenMode mode)
 159     {
 160         m_hFile = ::CreateFile
 161                     (
 162                      filename,                      // name
 163                      mode == Read ? GENERIC_READ    // access mask
 164                                   : GENERIC_WRITE,
 165                      0,                             // no sharing
 166                      NULL,                          // no secutity attr
 167                      OPEN_EXISTING,                 // creation disposition
 168                      0,                             // no flags
 169                      NULL                           // no template file
 170                     );
 171
 172         if ( m_hFile == INVALID_HANDLE_VALUE )
 173         {
 174             wxLogSysError(_("Failed to open '%s' for %s"),
 175                           filename.c_str(),
 176                           mode == Read ? _("reading") : _("writing"));
 177         }
 178     }
 179
 180     ~wxFileHandle()
 181     {
 182         if ( m_hFile != INVALID_HANDLE_VALUE )
 183         {
 184             if ( !::CloseHandle(m_hFile) )
 185             {
 186                 wxLogSysError(_("Failed to close file handle"));
 187             }
 188         }
 189     }
 190
 191     // return TRUE only if the file could be opened successfully
 192     bool IsOk() const { return m_hFile != INVALID_HANDLE_VALUE; }
 193
 194     // get the handle
 195     operator HANDLE() const { return m_hFile; }
 196
 197 private:
 198     HANDLE m_hFile;
 199 };
 200
 201 #endif // __WIN32__
 202
 203 // ----------------------------------------------------------------------------
 204 // private functions
 205 // ----------------------------------------------------------------------------
 206
 207 #if wxUSE_DATETIME && defined(__WIN32__) && !defined(__WXMICROWIN__)
 208
 209 // convert between wxDateTime and FILETIME which is a 64-bit value representing
 210 // the number of 100-nanosecond intervals since January 1, 1601.
 211
 212 static void ConvertFileTimeToWx(wxDateTime *dt, const FILETIME &ft)
 213 {
 214     FILETIME ftcopy = ft;
 215     FILETIME ftLocal;
 216     if ( !::FileTimeToLocalFileTime(&ftcopy, &ftLocal) )
 217     {
 218         wxLogLastError(_T("FileTimeToLocalFileTime"));
 219     }
 220
 221     SYSTEMTIME st;
 222     if ( !::FileTimeToSystemTime(&ftLocal, &st) )
 223     {
 224         wxLogLastError(_T("FileTimeToSystemTime"));
 225     }
 226
 227     dt->Set(st.wDay, wxDateTime::Month(st.wMonth - 1), st.wYear,
 228             st.wHour, st.wMinute, st.wSecond, st.wMilliseconds);
 229 }
 230
 231 static void ConvertWxToFileTime(FILETIME *ft, const wxDateTime& dt)
 232 {
 233     SYSTEMTIME st;
 234     st.wDay = dt.GetDay();
 235     st.wMonth = dt.GetMonth() + 1;
 236     st.wYear = dt.GetYear();
 237     st.wHour = dt.GetHour();
 238     st.wMinute = dt.GetMinute();
 239     st.wSecond = dt.GetSecond();
 240     st.wMilliseconds = dt.GetMillisecond();
 241
 242     FILETIME ftLocal;
 243     if ( !::SystemTimeToFileTime(&st, &ftLocal) )
 244     {
 245         wxLogLastError(_T("SystemTimeToFileTime"));
 246     }
 247
 248     if ( !::LocalFileTimeToFileTime(&ftLocal, ft) )
 249     {
 250         wxLogLastError(_T("LocalFileTimeToFileTime"));
 251     }
 252 }
 253
 254 #endif // wxUSE_DATETIME && __WIN32__
 255
 256 // return a string with the volume par
 257 static wxString wxGetVolumeString(const wxString& volume, wxPathFormat format)
 258 {
 259     wxString path;
 260
 261     if ( !volume.empty() )
 262     {
 263         format = wxFileName::GetFormat(format);
 264
 265         // Special Windows UNC paths hack, part 2: undo what we did in
 266         // SplitPath() and make an UNC path if we have a drive which is not a
 267         // single letter (hopefully the network shares can't be one letter only
 268         // although I didn't find any authoritative docs on this)
 269         if ( format == wxPATH_DOS && volume.length() > 1 )
 270         {
 271             path << wxFILE_SEP_PATH_DOS << wxFILE_SEP_PATH_DOS << volume;
 272         }
 273         else if  ( format == wxPATH_DOS || format == wxPATH_VMS )
 274         {
 275             path << volume << wxFileName::GetVolumeSeparator(format);
 276         }
 277         // else ignore
 278     }
 279
 280     return path;
 281 }
 282
 283 // ============================================================================
 284 // implementation
 285 // ============================================================================
 286
 287 // ----------------------------------------------------------------------------
 288 // wxFileName construction
 289 // ----------------------------------------------------------------------------
 290
 291 void wxFileName::Assign( const wxFileName &filepath )
 292 {
 293     m_volume = filepath.GetVolume();
 294     m_dirs = filepath.GetDirs();
 295     m_name = filepath.GetName();
 296     m_ext = filepath.GetExt();
 297     m_relative = filepath.m_relative;
 298 }
 299
 300 void wxFileName::Assign(const wxString& volume,
 301                         const wxString& path,
 302                         const wxString& name,
 303                         const wxString& ext,
 304                         wxPathFormat format )
 305 {
 306     SetPath( path, format );
 307
 308     m_volume = volume;
 309     m_ext = ext;
 310     m_name = name;
 311 }
 312
 313 void wxFileName::SetPath( const wxString &path, wxPathFormat format )
 314 {
 315     m_dirs.Clear();
 316
 317     if ( !path.empty() )
 318     {
 319         wxPathFormat my_format = GetFormat( format );
 320         wxString my_path = path;
 321
 322         // 1) Determine if the path is relative or absolute.
 323         wxChar leadingChar = my_path[0u];
 324
 325         switch (my_format)
 326         {
 327             case wxPATH_MAC:
 328                 m_relative = leadingChar == wxT(':');
 329
 330                 // We then remove a leading ":". The reason is in our
 331                 // storage form for relative paths:
 332                 // ":dir:file.txt" actually means "./dir/file.txt" in
 333                 // DOS notation and should get stored as
 334                 // (relative) (dir) (file.txt)
 335                 // "::dir:file.txt" actually means "../dir/file.txt"
 336                 // stored as (relative) (..) (dir) (file.txt)
 337                 // This is important only for the Mac as an empty dir
 338                 // actually means <UP>, whereas under DOS, double
 339                 // slashes can be ignored: "\\\\" is the same as "\\".
 340                 if (m_relative)
 341                     my_path.erase( 0, 1 );
 342                 break;
 343
 344             case wxPATH_VMS:
 345                 // TODO: what is the relative path format here?
 346                 m_relative = FALSE;
 347                 break;
 348
 349             case wxPATH_UNIX:
 350                 // the paths of the form "~" or "~username" are absolute
 351                 m_relative = leadingChar != wxT('/') && leadingChar != _T('~');
 352                 break;
 353
 354             case wxPATH_DOS:
 355                 m_relative = !IsPathSeparator(leadingChar, my_format);
 356                 break;
 357
 358             default:
 359                 wxFAIL_MSG( wxT("error") );
 360                 break;
 361         }
 362
 363         // 2) Break up the path into its members. If the original path
 364         //    was just "/" or "\\", m_dirs will be empty. We know from
 365         //    the m_relative field, if this means "nothing" or "root dir".
 366
 367         wxStringTokenizer tn( my_path, GetPathSeparators(my_format) );
 368
 369         while ( tn.HasMoreTokens() )
 370         {
 371             wxString token = tn.GetNextToken();
 372
 373             // Remove empty token under DOS and Unix, interpret them
 374             // as .. under Mac.
 375             if (token.empty())
 376             {
 377                 if (my_format == wxPATH_MAC)
 378                     m_dirs.Add( wxT("..") );
 379                 // else ignore
 380             }
 381             else
 382             {
 383                m_dirs.Add( token );
 384             }
 385         }
 386     }
 387     else // no path at all
 388     {
 389         m_relative = TRUE;
 390     }
 391 }
 392
 393 void wxFileName::Assign(const wxString& fullpath,
 394                         wxPathFormat format)
 395 {
 396     wxString volume, path, name, ext;
 397     SplitPath(fullpath, &volume, &path, &name, &ext, format);
 398
 399     Assign(volume, path, name, ext, format);
 400 }
 401
 402 void wxFileName::Assign(const wxString& fullpathOrig,
 403                         const wxString& fullname,
 404                         wxPathFormat format)
 405 {
 406     // always recognize fullpath as directory, even if it doesn't end with a
 407     // slash
 408     wxString fullpath = fullpathOrig;
 409     if ( !wxEndsWithPathSeparator(fullpath) )
 410     {
 411         fullpath += GetPathSeparator(format);
 412     }
 413
 414     wxString volume, path, name, ext;
 415
 416     // do some consistency checks in debug mode: the name should be really just
 417     // the filename and the path should be really just a path
 418 #ifdef __WXDEBUG__
 419     wxString pathDummy, nameDummy, extDummy;
 420
 421     SplitPath(fullname, &pathDummy, &name, &ext, format);
 422
 423     wxASSERT_MSG( pathDummy.empty(),
 424                   _T("the file name shouldn't contain the path") );
 425
 426     SplitPath(fullpath, &volume, &path, &nameDummy, &extDummy, format);
 427
 428     wxASSERT_MSG( nameDummy.empty() && extDummy.empty(),
 429                   _T("the path shouldn't contain file name nor extension") );
 430
 431 #else // !__WXDEBUG__
 432     SplitPath(fullname, NULL /* no path */, &name, &ext, format);
 433     SplitPath(fullpath, &volume, &path, NULL, NULL, format);
 434 #endif // __WXDEBUG__/!__WXDEBUG__
 435
 436     Assign(volume, path, name, ext, format);
 437 }
 438
 439 void wxFileName::AssignDir(const wxString& dir, wxPathFormat format)
 440 {
 441     Assign(dir, _T(""), format);
 442 }
 443
 444 void wxFileName::Clear()
 445 {
 446     m_dirs.Clear();
 447
 448     m_volume =
 449     m_name =
 450     m_ext = wxEmptyString;
 451
 452     // we don't have any absolute path for now
 453     m_relative = TRUE;
 454 }
 455
 456 /* static */
 457 wxFileName wxFileName::FileName(const wxString& file, wxPathFormat format)
 458 {
 459     return wxFileName(file, format);
 460 }
 461
 462 /* static */
 463 wxFileName wxFileName::DirName(const wxString& dir, wxPathFormat format)
 464 {
 465     wxFileName fn;
 466     fn.AssignDir(dir, format);
 467     return fn;
 468 }
 469
 470 // ----------------------------------------------------------------------------
 471 // existence tests
 472 // ----------------------------------------------------------------------------
 473
 474 bool wxFileName::FileExists() const
 475 {
 476     return wxFileName::FileExists( GetFullPath() );
 477 }
 478
 479 bool wxFileName::FileExists( const wxString &file )
 480 {
 481     return ::wxFileExists( file );
 482 }
 483
 484 bool wxFileName::DirExists() const
 485 {
 486     return wxFileName::DirExists( GetFullPath() );
 487 }
 488
 489 bool wxFileName::DirExists( const wxString &dir )
 490 {
 491     return ::wxDirExists( dir );
 492 }
 493
 494 // ----------------------------------------------------------------------------
 495 // CWD and HOME stuff
 496 // ----------------------------------------------------------------------------
 497
 498 void wxFileName::AssignCwd(const wxString& volume)
 499 {
 500     AssignDir(wxFileName::GetCwd(volume));
 501 }
 502
 503 /* static */
 504 wxString wxFileName::GetCwd(const wxString& volume)
 505 {
 506     // if we have the volume, we must get the current directory on this drive
 507     // and to do this we have to chdir to this volume - at least under Windows,
 508     // I don't know how to get the current drive on another volume elsewhere
 509     // (TODO)
 510     wxString cwdOld;
 511     if ( !volume.empty() )
 512     {
 513         cwdOld = wxGetCwd();
 514         SetCwd(volume + GetVolumeSeparator());
 515     }
 516
 517     wxString cwd = ::wxGetCwd();
 518
 519     if ( !volume.empty() )
 520     {
 521         SetCwd(cwdOld);
 522     }
 523
 524     return cwd;
 525 }
 526
 527 bool wxFileName::SetCwd()
 528 {
 529     return wxFileName::SetCwd( GetFullPath() );
 530 }
 531
 532 bool wxFileName::SetCwd( const wxString &cwd )
 533 {
 534     return ::wxSetWorkingDirectory( cwd );
 535 }
 536
 537 void wxFileName::AssignHomeDir()
 538 {
 539     AssignDir(wxFileName::GetHomeDir());
 540 }
 541
 542 wxString wxFileName::GetHomeDir()
 543 {
 544     return ::wxGetHomeDir();
 545 }
 546
 547 void wxFileName::AssignTempFileName(const wxString& prefix, wxFile *fileTemp)
 548 {
 549     wxString tempname = CreateTempFileName(prefix, fileTemp);
 550     if ( tempname.empty() )
 551     {
 552         // error, failed to get temp file name
 553         Clear();
 554     }
 555     else // ok
 556     {
 557         Assign(tempname);
 558     }
 559 }
 560
 561 /* static */
 562 wxString
 563 wxFileName::CreateTempFileName(const wxString& prefix, wxFile *fileTemp)
 564 {
 565     wxString path, dir, name;
 566
 567     // use the directory specified by the prefix
 568     SplitPath(prefix, &dir, &name, NULL /* extension */);
 569
 570 #if defined(__WXWINCE__)
 571     if (dir.empty())
 572     {
 573         // FIXME. Create \temp dir?
 574         dir = wxT("\\");
 575     }
 576     path = dir + wxT("\\") + prefix;
 577     int i = 1;
 578     while (wxFileExists(path))
 579     {
 580         path = dir + wxT("\\") + prefix ;
 581         path << i;
 582         i ++;
 583     }
 584
 585 #elif defined(__WINDOWS__) && !defined(__WXMICROWIN__)
 586 #ifdef __WIN32__
 587     if ( dir.empty() )
 588     {
 589         if ( !::GetTempPath(MAX_PATH, wxStringBuffer(dir, MAX_PATH + 1)) )
 590         {
 591             wxLogLastError(_T("GetTempPath"));
 592         }
 593
 594         if ( dir.empty() )
 595         {
 596             // GetTempFileName() fails if we pass it an empty string
 597             dir = _T('.');
 598         }
 599     }
 600     else // we have a dir to create the file in
 601     {
 602         // ensure we use only the back slashes as GetTempFileName(), unlike all
 603         // the other APIs, is picky and doesn't accept the forward ones
 604         dir.Replace(_T("/"), _T("\\"));
 605     }
 606
 607     if ( !::GetTempFileName(dir, name, 0, wxStringBuffer(path, MAX_PATH + 1)) )
 608     {
 609         wxLogLastError(_T("GetTempFileName"));
 610
 611         path.clear();
 612     }
 613 #else // Win16
 614     if ( !::GetTempFileName(NULL, prefix, 0, wxStringBuffer(path, 1025)) )
 615     {
 616         path.clear();
 617     }
 618 #endif // Win32/16
 619
 620 #elif defined(__WXPM__)
 621     // for now just create a file
 622     //
 623     // future enhancements can be to set some extended attributes for file
 624     // systems OS/2 supports that have them (HPFS, FAT32) and security
 625     // (HPFS386)
 626     static const wxChar *szMktempSuffix = wxT("XXX");
 627     path << dir << _T('/') << name << szMktempSuffix;
 628
 629     // Temporarily remove - MN
 630     #ifndef __WATCOMC__
 631         ::DosCreateDir(wxStringBuffer(path, MAX_PATH), NULL);
 632     #endif
 633
 634 #else // !Windows, !OS/2
 635     if ( dir.empty() )
 636     {
 637 #if defined(__WXMAC__) && !defined(__DARWIN__)
 638         dir = wxMacFindFolder(  (short) kOnSystemDisk, kTemporaryFolderType, kCreateFolder ) ;
 639 #else // !Mac
 640         dir = wxGetenv(_T("TMP"));
 641         if ( dir.empty() )
 642         {
 643             dir = wxGetenv(_T("TEMP"));
 644         }
 645
 646         if ( dir.empty() )
 647         {
 648             // default
 649             #ifdef __DOS__
 650                 dir = _T(".");
 651             #else
 652                 dir = _T("/tmp");
 653             #endif
 654         }
 655 #endif // Mac/!Mac
 656     }
 657
 658     path = dir;
 659
 660     if ( !wxEndsWithPathSeparator(dir) &&
 661             (name.empty() || !wxIsPathSeparator(name[0u])) )
 662     {
 663         path += wxFILE_SEP_PATH;
 664     }
 665
 666     path += name;
 667
 668 #if defined(HAVE_MKSTEMP)
 669     // scratch space for mkstemp()
 670     path += _T("XXXXXX");
 671
 672     // we need to copy the path to the buffer in which mkstemp() can modify it
 673     wxCharBuffer buf( wxConvFile.cWX2MB( path ) );
 674
 675     // cast is safe because the string length doesn't change
 676     int fdTemp = mkstemp( (char*)(const char*) buf );
 677     if ( fdTemp == -1 )
 678     {
 679         // this might be not necessary as mkstemp() on most systems should have
 680         // already done it but it doesn't hurt neither...
 681         path.clear();
 682     }
 683     else // mkstemp() succeeded
 684     {
 685         path = wxConvFile.cMB2WX( (const char*) buf );
 686
 687         // avoid leaking the fd
 688         if ( fileTemp )
 689         {
 690             fileTemp->Attach(fdTemp);
 691         }
 692         else
 693         {
 694             close(fdTemp);
 695         }
 696     }
 697 #else // !HAVE_MKSTEMP
 698
 699 #ifdef HAVE_MKTEMP
 700     // same as above
 701     path += _T("XXXXXX");
 702
 703     wxCharBuffer buf = wxConvFile.cWX2MB( path );
 704     if ( !mktemp( (const char*) buf ) )
 705     {
 706         path.clear();
 707     }
 708     else
 709     {
 710         path = wxConvFile.cMB2WX( (const char*) buf );
 711     }
 712 #else // !HAVE_MKTEMP (includes __DOS__)
 713     // generate the unique file name ourselves
 714     #if !defined(__DOS__) && (!defined(__MWERKS__) || defined(__DARWIN__) )
 715     path << (unsigned int)getpid();
 716     #endif
 717
 718     wxString pathTry;
 719
 720     static const size_t numTries = 1000;
 721     for ( size_t n = 0; n < numTries; n++ )
 722     {
 723         // 3 hex digits is enough for numTries == 1000 < 4096
 724         pathTry = path + wxString::Format(_T("%.03x"), n);
 725         if ( !wxFile::Exists(pathTry) )
 726         {
 727             break;
 728         }
 729
 730         pathTry.clear();
 731     }
 732
 733     path = pathTry;
 734 #endif // HAVE_MKTEMP/!HAVE_MKTEMP
 735
 736     if ( !path.empty() )
 737     {
 738     }
 739 #endif // HAVE_MKSTEMP/!HAVE_MKSTEMP
 740
 741 #endif // Windows/!Windows
 742
 743     if ( path.empty() )
 744     {
 745         wxLogSysError(_("Failed to create a temporary file name"));
 746     }
 747     else if ( fileTemp && !fileTemp->IsOpened() )
 748     {
 749         // open the file - of course, there is a race condition here, this is
 750         // why we always prefer using mkstemp()...
 751         //
 752         // NB: GetTempFileName() under Windows creates the file, so using
 753         //     write_excl there would fail
 754         if ( !fileTemp->Open(path,
 755 #if defined(__WINDOWS__) && !defined(__WXMICROWIN__)
 756                              wxFile::write,
 757 #else
 758                              wxFile::write_excl,
 759 #endif
 760                              wxS_IRUSR | wxS_IWUSR) )
 761         {
 762             // FIXME: If !ok here should we loop and try again with another
 763             //        file name?  That is the standard recourse if open(O_EXCL)
 764             //        fails, though of course it should be protected against
 765             //        possible infinite looping too.
 766
 767             wxLogError(_("Failed to open temporary file."));
 768
 769             path.clear();
 770         }
 771     }
 772
 773     return path;
 774 }
 775
 776 // ----------------------------------------------------------------------------
 777 // directory operations
 778 // ----------------------------------------------------------------------------
 779
 780 bool wxFileName::Mkdir( int perm, int flags )
 781 {
 782     return wxFileName::Mkdir( GetFullPath(), perm, flags );
 783 }
 784
 785 bool wxFileName::Mkdir( const wxString& dir, int perm, int flags )
 786 {
 787     if ( flags & wxPATH_MKDIR_FULL )
 788     {
 789         // split the path in components
 790         wxFileName filename;
 791         filename.AssignDir(dir);
 792
 793         wxString currPath;
 794         if ( filename.HasVolume())
 795         {
 796             currPath << wxGetVolumeString(filename.GetVolume(), wxPATH_NATIVE);
 797         }
 798
 799         wxArrayString dirs = filename.GetDirs();
 800         size_t count = dirs.GetCount();
 801         for ( size_t i = 0; i < count; i++ )
 802         {
 803             if ( i > 0 ||
 804 #if defined(__WXMAC__) && !defined(__DARWIN__)
 805                         // relative pathnames are exactely the other way round under mac...
 806                 !filename.IsAbsolute()
 807 #else
 808                 filename.IsAbsolute()
 809 #endif
 810             )
 811                 currPath += wxFILE_SEP_PATH;
 812             currPath += dirs[i];
 813
 814             if (!DirExists(currPath))
 815             {
 816                 if (!wxMkdir(currPath, perm))
 817                 {
 818                     // no need to try creating further directories
 819                     return FALSE;
 820                 }
 821             }
 822         }
 823
 824         return TRUE;
 825
 826     }
 827
 828     return ::wxMkdir( dir, perm );
 829 }
 830
 831 bool wxFileName::Rmdir()
 832 {
 833     return wxFileName::Rmdir( GetFullPath() );
 834 }
 835
 836 bool wxFileName::Rmdir( const wxString &dir )
 837 {
 838     return ::wxRmdir( dir );
 839 }
 840
 841 // ----------------------------------------------------------------------------
 842 // path normalization
 843 // ----------------------------------------------------------------------------
 844
 845 bool wxFileName::Normalize(int flags,
 846                            const wxString& cwd,
 847                            wxPathFormat format)
 848 {
 849     // the existing path components
 850     wxArrayString dirs = GetDirs();
 851
 852     // the path to prepend in front to make the path absolute
 853     wxFileName curDir;
 854
 855     format = GetFormat(format);
 856
 857     // make the path absolute
 858     if ( (flags & wxPATH_NORM_ABSOLUTE) && !IsAbsolute(format) )
 859     {
 860         if ( cwd.empty() )
 861         {
 862             curDir.AssignCwd(GetVolume());
 863         }
 864         else // cwd provided
 865         {
 866             curDir.AssignDir(cwd);
 867         }
 868
 869         // the path may be not absolute because it doesn't have the volume name
 870         // but in this case we shouldn't modify the directory components of it
 871         // but just set the current volume
 872         if ( !HasVolume() && curDir.HasVolume() )
 873         {
 874             SetVolume(curDir.GetVolume());
 875
 876             if ( !m_relative )
 877             {
 878                 // yes, it was the case - we don't need curDir then
 879                 curDir.Clear();
 880             }
 881         }
 882     }
 883
 884     // handle ~ stuff under Unix only
 885     if ( (format == wxPATH_UNIX) && (flags & wxPATH_NORM_TILDE) )
 886     {
 887         if ( !dirs.IsEmpty() )
 888         {
 889             wxString dir = dirs[0u];
 890             if ( !dir.empty() && dir[0u] == _T('~') )
 891             {
 892                 curDir.AssignDir(wxGetUserHome(dir.c_str() + 1));
 893
 894                 dirs.RemoveAt(0u);
 895             }
 896         }
 897     }
 898
 899     // transform relative path into abs one
 900     if ( curDir.IsOk() )
 901     {
 902         wxArrayString dirsNew = curDir.GetDirs();
 903         size_t count = dirs.GetCount();
 904         for ( size_t n = 0; n < count; n++ )
 905         {
 906             dirsNew.Add(dirs[n]);
 907         }
 908
 909         dirs = dirsNew;
 910     }
 911
 912     // now deal with ".", ".." and the rest
 913     m_dirs.Empty();
 914     size_t count = dirs.GetCount();
 915     for ( size_t n = 0; n < count; n++ )
 916     {
 917         wxString dir = dirs[n];
 918
 919         if ( flags & wxPATH_NORM_DOTS )
 920         {
 921             if ( dir == wxT(".") )
 922             {
 923                 // just ignore
 924                 continue;
 925             }
 926
 927             if ( dir == wxT("..") )
 928             {
 929                 if ( m_dirs.IsEmpty() )
 930                 {
 931                     wxLogError(_("The path '%s' contains too many \"..\"!"),
 932                                GetFullPath().c_str());
 933                     return FALSE;
 934                 }
 935
 936                 m_dirs.RemoveAt(m_dirs.GetCount() - 1);
 937                 continue;
 938             }
 939         }
 940
 941         if ( flags & wxPATH_NORM_ENV_VARS )
 942         {
 943             dir = wxExpandEnvVars(dir);
 944         }
 945
 946         if ( (flags & wxPATH_NORM_CASE) && !IsCaseSensitive(format) )
 947         {
 948             dir.MakeLower();
 949         }
 950
 951         m_dirs.Add(dir);
 952     }
 953
 954     if ( (flags & wxPATH_NORM_CASE) && !IsCaseSensitive(format) )
 955     {
 956         // VZ: expand env vars here too?
 957
 958         m_name.MakeLower();
 959         m_ext.MakeLower();
 960     }
 961
 962     // we do have the path now
 963     //
 964     // NB: need to do this before (maybe) calling Assign() below
 965     m_relative = FALSE;
 966
 967 #if defined(__WIN32__)
 968     if ( (flags & wxPATH_NORM_LONG) && (format == wxPATH_DOS) )
 969     {
 970         Assign(GetLongPath());
 971     }
 972 #endif // Win32
 973
 974     return TRUE;
 975 }
 976
 977 // ----------------------------------------------------------------------------
 978 // absolute/relative paths
 979 // ----------------------------------------------------------------------------
 980
 981 bool wxFileName::IsAbsolute(wxPathFormat format) const
 982 {
 983     // if our path doesn't start with a path separator, it's not an absolute
 984     // path
 985     if ( m_relative )
 986         return FALSE;
 987
 988     if ( !GetVolumeSeparator(format).empty() )
 989     {
 990         // this format has volumes and an absolute path must have one, it's not
 991         // enough to have the full path to bean absolute file under Windows
 992         if ( GetVolume().empty() )
 993             return FALSE;
 994     }
 995
 996     return TRUE;
 997 }
 998
 999 bool wxFileName::MakeRelativeTo(const wxString& pathBase, wxPathFormat format)
1000 {
1001     wxFileName fnBase = wxFileName::DirName(pathBase, format);
1002
1003     // get cwd only once - small time saving
1004     wxString cwd = wxGetCwd();
1005     Normalize(wxPATH_NORM_ALL & ~wxPATH_NORM_CASE, cwd, format);
1006     fnBase.Normalize(wxPATH_NORM_ALL & ~wxPATH_NORM_CASE, cwd, format);
1007
1008     bool withCase = IsCaseSensitive(format);
1009
1010     // we can't do anything if the files live on different volumes
1011     if ( !GetVolume().IsSameAs(fnBase.GetVolume(), withCase) )
1012     {
1013         // nothing done
1014         return FALSE;
1015     }
1016
1017     // same drive, so we don't need our volume
1018     m_volume.clear();
1019
1020     // remove common directories starting at the top
1021     while ( !m_dirs.IsEmpty() && !fnBase.m_dirs.IsEmpty() &&
1022                 m_dirs[0u].IsSameAs(fnBase.m_dirs[0u], withCase) )
1023     {
1024         m_dirs.RemoveAt(0);
1025         fnBase.m_dirs.RemoveAt(0);
1026     }
1027
1028     // add as many ".." as needed
1029     size_t count = fnBase.m_dirs.GetCount();
1030     for ( size_t i = 0; i < count; i++ )
1031     {
1032         m_dirs.Insert(wxT(".."), 0u);
1033     }
1034
1035     if ( format == wxPATH_UNIX || format == wxPATH_DOS )
1036     {
1037         // a directory made relative with respect to itself is '.' under Unix
1038         // and DOS, by definition (but we don't have to insert "./" for the
1039         // files)
1040         if ( m_dirs.IsEmpty() && IsDir() )
1041         {
1042             m_dirs.Add(_T('.'));
1043         }
1044     }
1045
1046     m_relative = TRUE;
1047
1048     // we were modified
1049     return TRUE;
1050 }
1051
1052 // ----------------------------------------------------------------------------
1053 // filename kind tests
1054 // ----------------------------------------------------------------------------
1055
1056 bool wxFileName::SameAs(const wxFileName& filepath, wxPathFormat format) const
1057 {
1058     wxFileName fn1 = *this,
1059                fn2 = filepath;
1060
1061     // get cwd only once - small time saving
1062     wxString cwd = wxGetCwd();
1063     fn1.Normalize(wxPATH_NORM_ALL & ~wxPATH_NORM_CASE, cwd, format);
1064     fn2.Normalize(wxPATH_NORM_ALL & ~wxPATH_NORM_CASE, cwd, format);
1065
1066     if ( fn1.GetFullPath() == fn2.GetFullPath() )
1067         return TRUE;
1068
1069     // TODO: compare inodes for Unix, this works even when filenames are
1070     //       different but files are the same (symlinks) (VZ)
1071
1072     return FALSE;
1073 }
1074
1075 /* static */
1076 bool wxFileName::IsCaseSensitive( wxPathFormat format )
1077 {
1078     // only Unix filenames are truely case-sensitive
1079     return GetFormat(format) == wxPATH_UNIX;
1080 }
1081
1082 /* static */
1083 wxString wxFileName::GetVolumeSeparator(wxPathFormat format)
1084 {
1085     wxString sepVol;
1086
1087     if ( (GetFormat(format) == wxPATH_DOS) ||
1088          (GetFormat(format) == wxPATH_VMS) )
1089     {
1090         sepVol = wxFILE_SEP_DSK;
1091     }
1092     //else: leave empty
1093
1094     return sepVol;
1095 }
1096
1097 /* static */
1098 wxString wxFileName::GetPathSeparators(wxPathFormat format)
1099 {
1100     wxString seps;
1101     switch ( GetFormat(format) )
1102     {
1103         case wxPATH_DOS:
1104             // accept both as native APIs do but put the native one first as
1105             // this is the one we use in GetFullPath()
1106             seps << wxFILE_SEP_PATH_DOS << wxFILE_SEP_PATH_UNIX;
1107             break;
1108
1109         default:
1110             wxFAIL_MSG( _T("unknown wxPATH_XXX style") );
1111             // fall through
1112
1113         case wxPATH_UNIX:
1114             seps = wxFILE_SEP_PATH_UNIX;
1115             break;
1116
1117         case wxPATH_MAC:
1118             seps = wxFILE_SEP_PATH_MAC;
1119             break;
1120
1121         case wxPATH_VMS:
1122             seps = wxFILE_SEP_PATH_VMS;
1123             break;
1124     }
1125
1126     return seps;
1127 }
1128
1129 /* static */
1130 bool wxFileName::IsPathSeparator(wxChar ch, wxPathFormat format)
1131 {
1132     // wxString::Find() doesn't work as expected with NUL - it will always find
1133     // it, so it is almost surely a bug if this function is called with NUL arg
1134     wxASSERT_MSG( ch != _T('\0'), _T("shouldn't be called with NUL") );
1135
1136     return GetPathSeparators(format).Find(ch) != wxNOT_FOUND;
1137 }
1138
1139 // ----------------------------------------------------------------------------
1140 // path components manipulation
1141 // ----------------------------------------------------------------------------
1142
1143 void wxFileName::AppendDir( const wxString &dir )
1144 {
1145     m_dirs.Add( dir );
1146 }
1147
1148 void wxFileName::PrependDir( const wxString &dir )
1149 {
1150     m_dirs.Insert( dir, 0 );
1151 }
1152
1153 void wxFileName::InsertDir( int before, const wxString &dir )
1154 {
1155     m_dirs.Insert( dir, before );
1156 }
1157
1158 void wxFileName::RemoveDir( int pos )
1159 {
1160     m_dirs.RemoveAt( (size_t)pos );
1161 }
1162
1163 // ----------------------------------------------------------------------------
1164 // accessors
1165 // ----------------------------------------------------------------------------
1166
1167 void wxFileName::SetFullName(const wxString& fullname)
1168 {
1169     SplitPath(fullname, NULL /* no path */, &m_name, &m_ext);
1170 }
1171
1172 wxString wxFileName::GetFullName() const
1173 {
1174     wxString fullname = m_name;
1175     if ( !m_ext.empty() )
1176     {
1177         fullname << wxFILE_SEP_EXT << m_ext;
1178     }
1179
1180     return fullname;
1181 }
1182
1183 wxString wxFileName::GetPath( int flags, wxPathFormat format ) const
1184 {
1185     format = GetFormat( format );
1186
1187     wxString fullpath;
1188
1189     // return the volume with the path as well if requested
1190     if ( flags & wxPATH_GET_VOLUME )
1191     {
1192         fullpath += wxGetVolumeString(GetVolume(), format);
1193     }
1194
1195     // the leading character
1196     switch ( format )
1197     {
1198         case wxPATH_MAC:
1199             if ( m_relative )
1200                 fullpath += wxFILE_SEP_PATH_MAC;
1201             break;
1202
1203         case wxPATH_DOS:
1204             if (!m_relative)
1205                 fullpath += wxFILE_SEP_PATH_DOS;
1206             break;
1207
1208         default:
1209             wxFAIL_MSG( _T("unknown path format") );
1210             // fall through
1211
1212         case wxPATH_UNIX:
1213             if ( !m_relative )
1214             {
1215                 // normally the absolute file names starts with a slash with
1216                 // one exception: file names like "~/foo.bar" don't have it
1217                 if ( m_dirs.IsEmpty() || m_dirs[0u] != _T('~') )
1218                 {
1219                     fullpath += wxFILE_SEP_PATH_UNIX;
1220                 }
1221             }
1222             break;
1223
1224         case wxPATH_VMS:
1225             // no leading character here but use this place to unset
1226             // wxPATH_GET_SEPARATOR flag: under VMS it doesn't make sense as,
1227             // if I understand correctly, there should never be a dot before
1228             // the closing bracket
1229             flags &= ~wxPATH_GET_SEPARATOR;
1230     }
1231
1232     // then concatenate all the path components using the path separator
1233     size_t dirCount = m_dirs.GetCount();
1234     if ( dirCount )
1235     {
1236         if ( format == wxPATH_VMS )
1237         {
1238             fullpath += wxT('[');
1239         }
1240
1241         for ( size_t i = 0; i < dirCount; i++ )
1242         {
1243             switch (format)
1244             {
1245                 case wxPATH_MAC:
1246                     if ( m_dirs[i] == wxT(".") )
1247                     {
1248                         // skip appending ':', this shouldn't be done in this
1249                         // case as "::" is interpreted as ".." under Unix
1250                         continue;
1251                     }
1252
1253                     // convert back from ".." to nothing
1254                     if ( m_dirs[i] != wxT("..") )
1255                          fullpath += m_dirs[i];
1256                     break;
1257
1258                 default:
1259                     wxFAIL_MSG( wxT("unexpected path format") );
1260                     // still fall through
1261
1262                 case wxPATH_DOS:
1263                 case wxPATH_UNIX:
1264                     fullpath += m_dirs[i];
1265                     break;
1266
1267                 case wxPATH_VMS:
1268                     // TODO: What to do with ".." under VMS
1269
1270                     // convert back from ".." to nothing
1271                     if ( m_dirs[i] != wxT("..") )
1272                         fullpath += m_dirs[i];
1273                     break;
1274             }
1275
1276             if ( (flags & wxPATH_GET_SEPARATOR) || (i != dirCount - 1) )
1277                 fullpath += GetPathSeparator(format);
1278         }
1279
1280         if ( format == wxPATH_VMS )
1281         {
1282             fullpath += wxT(']');
1283         }
1284     }
1285
1286     return fullpath;
1287 }
1288
1289 wxString wxFileName::GetFullPath( wxPathFormat format ) const
1290 {
1291     // we already have a function to get the path
1292     wxString fullpath = GetPath(wxPATH_GET_VOLUME | wxPATH_GET_SEPARATOR,
1293                                 format);
1294
1295     // now just add the file name and extension to it
1296     fullpath += GetFullName();
1297
1298     return fullpath;
1299 }
1300
1301 // Return the short form of the path (returns identity on non-Windows platforms)
1302 wxString wxFileName::GetShortPath() const
1303 {
1304 #if defined(__WXMSW__) && defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
1305     wxString path(GetFullPath());
1306     wxString pathOut;
1307     DWORD sz = ::GetShortPathName(path, NULL, 0);
1308     bool ok = sz != 0;
1309     if ( ok )
1310     {
1311         ok = ::GetShortPathName
1312                (
1313                 path,
1314                 pathOut.GetWriteBuf(sz),
1315                 sz
1316                ) != 0;
1317         pathOut.UngetWriteBuf();
1318     }
1319     if (ok)
1320         return pathOut;
1321
1322     return path;
1323 #else
1324     return GetFullPath();
1325 #endif
1326 }
1327
1328 // Return the long form of the path (returns identity on non-Windows platforms)
1329 wxString wxFileName::GetLongPath() const
1330 {
1331     wxString pathOut,
1332              path = GetFullPath();
1333
1334 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
1335     bool success = FALSE;
1336
1337 #if wxUSE_DYNAMIC_LOADER
1338     typedef DWORD (WINAPI *GET_LONG_PATH_NAME)(const wxChar *, wxChar *, DWORD);
1339
1340     static bool s_triedToLoad = FALSE;
1341
1342     if ( !s_triedToLoad )
1343     {
1344         // suppress the errors about missing GetLongPathName[AW]
1345         wxLogNull noLog;
1346
1347         s_triedToLoad = TRUE;
1348         wxDynamicLibrary dllKernel(_T("kernel32"));
1349         if ( dllKernel.IsLoaded() )
1350         {
1351             // may succeed or fail depending on the Windows version
1352             static GET_LONG_PATH_NAME s_pfnGetLongPathName = NULL;
1353 #ifdef _UNICODE
1354             s_pfnGetLongPathName = (GET_LONG_PATH_NAME) dllKernel.GetSymbol(_T("GetLongPathNameW"));
1355 #else
1356             s_pfnGetLongPathName = (GET_LONG_PATH_NAME) dllKernel.GetSymbol(_T("GetLongPathNameA"));
1357 #endif
1358
1359             if ( s_pfnGetLongPathName )
1360             {
1361                 DWORD dwSize = (*s_pfnGetLongPathName)(path, NULL, 0);
1362                 bool ok = dwSize > 0;
1363
1364                 if ( ok )
1365                 {
1366                     DWORD sz = (*s_pfnGetLongPathName)(path, NULL, 0);
1367                     ok = sz != 0;
1368                     if ( ok )
1369                     {
1370                         ok = (*s_pfnGetLongPathName)
1371                                 (
1372                                 path,
1373                                 pathOut.GetWriteBuf(sz),
1374                                 sz
1375                                 ) != 0;
1376                         pathOut.UngetWriteBuf();
1377
1378                         success = TRUE;
1379                     }
1380                 }
1381             }
1382         }
1383     }
1384
1385     if (success)
1386         return pathOut;
1387 #endif // wxUSE_DYNAMIC_LOADER
1388
1389     if (!success)
1390     {
1391         // The OS didn't support GetLongPathName, or some other error.
1392         // We need to call FindFirstFile on each component in turn.
1393
1394         WIN32_FIND_DATA findFileData;
1395         HANDLE hFind;
1396
1397         if ( HasVolume() )
1398             pathOut = GetVolume() +
1399                       GetVolumeSeparator(wxPATH_DOS) +
1400                       GetPathSeparator(wxPATH_DOS);
1401         else
1402             pathOut = wxEmptyString;
1403
1404         wxArrayString dirs = GetDirs();
1405         dirs.Add(GetFullName());
1406
1407         wxString tmpPath;
1408
1409         size_t count = dirs.GetCount();
1410         for ( size_t i = 0; i < count; i++ )
1411         {
1412             // We're using pathOut to collect the long-name path, but using a
1413             // temporary for appending the last path component which may be
1414             // short-name
1415             tmpPath = pathOut + dirs[i];
1416
1417             if ( tmpPath.empty() )
1418                 continue;
1419
1420             // can't see this being necessary? MF
1421             if ( tmpPath.Last() == GetVolumeSeparator(wxPATH_DOS) )
1422             {
1423                 // Can't pass a drive and root dir to FindFirstFile,
1424                 // so continue to next dir
1425                 tmpPath += wxFILE_SEP_PATH;
1426                 pathOut = tmpPath;
1427                 continue;
1428             }
1429
1430             hFind = ::FindFirstFile(tmpPath, &findFileData);
1431             if (hFind == INVALID_HANDLE_VALUE)
1432             {
1433                 // Error: most likely reason is that path doesn't exist, so
1434                 // append any unprocessed parts and return
1435                 for ( i += 1; i < count; i++ )
1436                     tmpPath += wxFILE_SEP_PATH + dirs[i];
1437
1438                 return tmpPath;
1439             }
1440
1441             pathOut += findFileData.cFileName;
1442             if ( (i < (count-1)) )
1443                 pathOut += wxFILE_SEP_PATH;
1444
1445             ::FindClose(hFind);
1446         }
1447     }
1448 #else // !Win32
1449     pathOut = path;
1450 #endif // Win32/!Win32
1451
1452     return pathOut;
1453 }
1454
1455 wxPathFormat wxFileName::GetFormat( wxPathFormat format )
1456 {
1457     if (format == wxPATH_NATIVE)
1458     {
1459 #if defined(__WXMSW__) || defined(__WXPM__) || defined(__DOS__)
1460         format = wxPATH_DOS;
1461 #elif defined(__WXMAC__) && !defined(__DARWIN__)
1462         format = wxPATH_MAC;
1463 #elif defined(__VMS)
1464         format = wxPATH_VMS;
1465 #else
1466         format = wxPATH_UNIX;
1467 #endif
1468     }
1469     return format;
1470 }
1471
1472 // ----------------------------------------------------------------------------
1473 // path splitting function
1474 // ----------------------------------------------------------------------------
1475
1476 /* static */
1477 void wxFileName::SplitPath(const wxString& fullpathWithVolume,
1478                            wxString *pstrVolume,
1479                            wxString *pstrPath,
1480                            wxString *pstrName,
1481                            wxString *pstrExt,
1482                            wxPathFormat format)
1483 {
1484     format = GetFormat(format);
1485
1486     wxString fullpath = fullpathWithVolume;
1487
1488     // under VMS the end of the path is ']', not the path separator used to
1489     // separate the components
1490     wxString sepPath = format == wxPATH_VMS ? wxString(_T(']'))
1491                                             : GetPathSeparators(format);
1492
1493     // special Windows UNC paths hack: transform \\share\path into share:path
1494     if ( format == wxPATH_DOS )
1495     {
1496         if ( fullpath.length() >= 4 &&
1497                 fullpath[0u] == wxFILE_SEP_PATH_DOS &&
1498                     fullpath[1u] == wxFILE_SEP_PATH_DOS )
1499         {
1500             fullpath.erase(0, 2);
1501
1502             size_t posFirstSlash = fullpath.find_first_of(sepPath);
1503             if ( posFirstSlash != wxString::npos )
1504             {
1505                 fullpath[posFirstSlash] = wxFILE_SEP_DSK;
1506
1507                 // UNC paths are always absolute, right? (FIXME)
1508                 fullpath.insert(posFirstSlash + 1, wxFILE_SEP_PATH_DOS);
1509             }
1510         }
1511     }
1512
1513     // We separate the volume here
1514     if ( format == wxPATH_DOS || format == wxPATH_VMS )
1515     {
1516         wxString sepVol = GetVolumeSeparator(format);
1517
1518         size_t posFirstColon = fullpath.find_first_of(sepVol);
1519         if ( posFirstColon != wxString::npos )
1520         {
1521             if ( pstrVolume )
1522             {
1523                 *pstrVolume = fullpath.Left(posFirstColon);
1524             }
1525
1526             // remove the volume name and the separator from the full path
1527             fullpath.erase(0, posFirstColon + sepVol.length());
1528         }
1529     }
1530
1531     // find the positions of the last dot and last path separator in the path
1532     size_t posLastDot = fullpath.find_last_of(wxFILE_SEP_EXT);
1533     size_t posLastSlash = fullpath.find_last_of(sepPath);
1534
1535     if ( (posLastDot != wxString::npos) &&
1536             ((format == wxPATH_UNIX) || (format == wxPATH_VMS)) )
1537     {
1538         if ( (posLastDot == 0) ||
1539              (fullpath[posLastDot - 1] == sepPath[0u] ) )
1540         {
1541             // under Unix and VMS, dot may be (and commonly is) the first
1542             // character of the filename, don't treat the entire filename as
1543             // extension in this case
1544             posLastDot = wxString::npos;
1545         }
1546     }
1547
1548     // if we do have a dot and a slash, check that the dot is in the name part
1549     if ( (posLastDot != wxString::npos) &&
1550          (posLastSlash != wxString::npos) &&
1551          (posLastDot < posLastSlash) )
1552     {
1553         // the dot is part of the path, not the start of the extension
1554         posLastDot = wxString::npos;
1555     }
1556
1557     // now fill in the variables provided by user
1558     if ( pstrPath )
1559     {
1560         if ( posLastSlash == wxString::npos )
1561         {
1562             // no path at all
1563             pstrPath->Empty();
1564         }
1565         else
1566         {
1567             // take everything up to the path separator but take care to make
1568             // the path equal to something like '/', not empty, for the files
1569             // immediately under root directory
1570             size_t len = posLastSlash;
1571
1572             // this rule does not apply to mac since we do not start with colons (sep)
1573             // except for relative paths
1574             if ( !len && format != wxPATH_MAC)
1575                 len++;
1576
1577             *pstrPath = fullpath.Left(len);
1578
1579             // special VMS hack: remove the initial bracket
1580             if ( format == wxPATH_VMS )
1581             {
1582                 if ( (*pstrPath)[0u] == _T('[') )
1583                     pstrPath->erase(0, 1);
1584             }
1585         }
1586     }
1587
1588     if ( pstrName )
1589     {
1590         // take all characters starting from the one after the last slash and
1591         // up to, but excluding, the last dot
1592         size_t nStart = posLastSlash == wxString::npos ? 0 : posLastSlash + 1;
1593         size_t count;
1594         if ( posLastDot == wxString::npos )
1595         {
1596             // take all until the end
1597             count = wxString::npos;
1598         }
1599         else if ( posLastSlash == wxString::npos )
1600         {
1601             count = posLastDot;
1602         }
1603         else // have both dot and slash
1604         {
1605             count = posLastDot - posLastSlash - 1;
1606         }
1607
1608         *pstrName = fullpath.Mid(nStart, count);
1609     }
1610
1611     if ( pstrExt )
1612     {
1613         if ( posLastDot == wxString::npos )
1614         {
1615             // no extension
1616             pstrExt->Empty();
1617         }
1618         else
1619         {
1620             // take everything after the dot
1621             *pstrExt = fullpath.Mid(posLastDot + 1);
1622         }
1623     }
1624 }
1625
1626 /* static */
1627 void wxFileName::SplitPath(const wxString& fullpath,
1628                            wxString *path,
1629                            wxString *name,
1630                            wxString *ext,
1631                            wxPathFormat format)
1632 {
1633     wxString volume;
1634     SplitPath(fullpath, &volume, path, name, ext, format);
1635
1636     if ( path )
1637     {
1638         path->Prepend(wxGetVolumeString(volume, format));
1639     }
1640 }
1641
1642 // ----------------------------------------------------------------------------
1643 // time functions
1644 // ----------------------------------------------------------------------------
1645
1646 #if wxUSE_DATETIME
1647
1648 bool wxFileName::SetTimes(const wxDateTime *dtAccess,
1649                           const wxDateTime *dtMod,
1650                           const wxDateTime *dtCreate)
1651 {
1652 #if defined(__WIN32__)
1653     if ( IsDir() )
1654     {
1655         // VZ: please let me know how to do this if you can
1656         wxFAIL_MSG( _T("SetTimes() not implemented for the directories") );
1657     }
1658     else // file
1659     {
1660         wxFileHandle fh(GetFullPath(), wxFileHandle::Write);
1661         if ( fh.IsOk() )
1662         {
1663             FILETIME ftAccess, ftCreate, ftWrite;
1664
1665             if ( dtCreate )
1666                 ConvertWxToFileTime(&ftCreate, *dtCreate);
1667             if ( dtAccess )
1668                 ConvertWxToFileTime(&ftAccess, *dtAccess);
1669             if ( dtMod )
1670                 ConvertWxToFileTime(&ftWrite, *dtMod);
1671
1672             if ( ::SetFileTime(fh,
1673                                dtCreate ? &ftCreate : NULL,
1674                                dtAccess ? &ftAccess : NULL,
1675                                dtMod ? &ftWrite : NULL) )
1676             {
1677                 return TRUE;
1678             }
1679         }
1680     }
1681 #elif defined(__UNIX_LIKE__) || (defined(__DOS__) && defined(__WATCOMC__))
1682     if ( !dtAccess && !dtMod )
1683     {
1684         // can't modify the creation time anyhow, don't try
1685         return TRUE;
1686     }
1687
1688     // if dtAccess or dtMod is not specified, use the other one (which must be
1689     // non NULL because of the test above) for both times
1690     utimbuf utm;
1691     utm.actime = dtAccess ? dtAccess->GetTicks() : dtMod->GetTicks();
1692     utm.modtime = dtMod ? dtMod->GetTicks() : dtAccess->GetTicks();
1693     if ( utime(GetFullPath().fn_str(), &utm) == 0 )
1694     {
1695         return TRUE;
1696     }
1697 #else // other platform
1698 #endif // platforms
1699
1700     wxLogSysError(_("Failed to modify file times for '%s'"),
1701                   GetFullPath().c_str());
1702
1703     return FALSE;
1704 }
1705
1706 bool wxFileName::Touch()
1707 {
1708 #if defined(__UNIX_LIKE__)
1709     // under Unix touching file is simple: just pass NULL to utime()
1710     if ( utime(GetFullPath().fn_str(), NULL) == 0 )
1711     {
1712         return TRUE;
1713     }
1714
1715     wxLogSysError(_("Failed to touch the file '%s'"), GetFullPath().c_str());
1716
1717     return FALSE;
1718 #else // other platform
1719     wxDateTime dtNow = wxDateTime::Now();
1720
1721     return SetTimes(&dtNow, &dtNow, NULL /* don't change create time */);
1722 #endif // platforms
1723 }
1724
1725 bool wxFileName::GetTimes(wxDateTime *dtAccess,
1726                           wxDateTime *dtMod,
1727                           wxDateTime *dtCreate) const
1728 {
1729 #if defined(__WIN32__)
1730     // we must use different methods for the files and directories under
1731     // Windows as CreateFile(GENERIC_READ) doesn't work for the directories and
1732     // CreateFile(FILE_FLAG_BACKUP_SEMANTICS) works -- but only under NT and
1733     // not 9x
1734     bool ok;
1735     FILETIME ftAccess, ftCreate, ftWrite;
1736     if ( IsDir() )
1737     {
1738         // implemented in msw/dir.cpp
1739         extern bool wxGetDirectoryTimes(const wxString& dirname,
1740                                         FILETIME *, FILETIME *, FILETIME *);
1741
1742         // we should pass the path without the trailing separator to
1743         // wxGetDirectoryTimes()
1744         ok = wxGetDirectoryTimes(GetPath(wxPATH_GET_VOLUME),
1745                                  &ftAccess, &ftCreate, &ftWrite);
1746     }
1747     else // file
1748     {
1749         wxFileHandle fh(GetFullPath(), wxFileHandle::Read);
1750         if ( fh.IsOk() )
1751         {
1752             ok = ::GetFileTime(fh,
1753                                dtCreate ? &ftCreate : NULL,
1754                                dtAccess ? &ftAccess : NULL,
1755                                dtMod ? &ftWrite : NULL) != 0;
1756         }
1757         else
1758         {
1759             ok = FALSE;
1760         }
1761     }
1762
1763     if ( ok )
1764     {
1765         if ( dtCreate )
1766             ConvertFileTimeToWx(dtCreate, ftCreate);
1767         if ( dtAccess )
1768             ConvertFileTimeToWx(dtAccess, ftAccess);
1769         if ( dtMod )
1770             ConvertFileTimeToWx(dtMod, ftWrite);
1771
1772         return TRUE;
1773     }
1774 #elif defined(__UNIX_LIKE__) || defined(__WXMAC__) || (defined(__DOS__) && defined(__WATCOMC__))
1775     wxStructStat stBuf;
1776     if ( wxStat( GetFullPath().c_str(), &stBuf) == 0 )
1777     {
1778         if ( dtAccess )
1779             dtAccess->Set(stBuf.st_atime);
1780         if ( dtMod )
1781             dtMod->Set(stBuf.st_mtime);
1782         if ( dtCreate )
1783             dtCreate->Set(stBuf.st_ctime);
1784
1785         return TRUE;
1786     }
1787 #else // other platform
1788 #endif // platforms
1789
1790     wxLogSysError(_("Failed to retrieve file times for '%s'"),
1791                   GetFullPath().c_str());
1792
1793     return FALSE;
1794 }
1795
1796 #endif // wxUSE_DATETIME
1797
1798 #ifdef __WXMAC__
1799
1800 const short kMacExtensionMaxLength = 16 ;
1801 class MacDefaultExtensionRecord
1802 {
1803 public :
1804   MacDefaultExtensionRecord()
1805   {
1806     m_ext[0] = 0 ;
1807     m_type = m_creator = NULL ;
1808   }
1809   MacDefaultExtensionRecord( const MacDefaultExtensionRecord& from )
1810   {
1811     wxStrcpy( m_ext , from.m_ext ) ;
1812     m_type = from.m_type ;
1813     m_creator = from.m_creator ;
1814   }
1815   MacDefaultExtensionRecord( const wxChar * extension , OSType type , OSType creator )
1816   {
1817     wxStrncpy( m_ext , extension , kMacExtensionMaxLength ) ;
1818     m_ext[kMacExtensionMaxLength] = 0 ;
1819     m_type = type ;
1820     m_creator = creator ;
1821   }
1822   wxChar m_ext[kMacExtensionMaxLength] ;
1823   OSType m_type ;
1824   OSType m_creator ;
1825 }  ;
1826
1827 #include "wx/dynarray.h"
1828 WX_DECLARE_OBJARRAY(MacDefaultExtensionRecord, MacDefaultExtensionArray) ;
1829
1830 bool gMacDefaultExtensionsInited = false ;
1831
1832 #include "wx/arrimpl.cpp"
1833
1834 WX_DEFINE_EXPORTED_OBJARRAY(MacDefaultExtensionArray) ;
1835
1836 MacDefaultExtensionArray gMacDefaultExtensions ;
1837
1838 static void MacEnsureDefaultExtensionsLoaded()
1839 {
1840   if ( !gMacDefaultExtensionsInited )
1841   {
1842
1843     // load the default extensions
1844     MacDefaultExtensionRecord defaults[1] =
1845     {
1846       MacDefaultExtensionRecord( wxT("txt") , 'TEXT' , 'ttxt' ) ,
1847
1848     } ;
1849     // we could load the pc exchange prefs here too
1850
1851     for ( size_t i = 0 ; i < WXSIZEOF( defaults ) ; ++i )
1852     {
1853       gMacDefaultExtensions.Add( defaults[i] ) ;
1854     }
1855     gMacDefaultExtensionsInited = true ;
1856   }
1857 }
1858 bool wxFileName::MacSetTypeAndCreator( wxUint32 type , wxUint32 creator )
1859 {
1860   FInfo fndrInfo ;
1861   FSSpec spec ;
1862   wxMacFilename2FSSpec(GetFullPath(),&spec) ;
1863   OSErr err = FSpGetFInfo( &spec , &fndrInfo ) ;
1864   wxCHECK( err == noErr , false ) ;
1865
1866   fndrInfo.fdType = type ;
1867   fndrInfo.fdCreator = creator ;
1868   FSpSetFInfo( &spec , &fndrInfo ) ;
1869   return true ;
1870 }
1871
1872 bool wxFileName::MacGetTypeAndCreator( wxUint32 *type , wxUint32 *creator )
1873 {
1874   FInfo fndrInfo ;
1875   FSSpec spec ;
1876   wxMacFilename2FSSpec(GetFullPath(),&spec) ;
1877   OSErr err = FSpGetFInfo( &spec , &fndrInfo ) ;
1878   wxCHECK( err == noErr , false ) ;
1879
1880   *type = fndrInfo.fdType ;
1881   *creator = fndrInfo.fdCreator ;
1882   return true ;
1883 }
1884
1885 bool wxFileName::MacSetDefaultTypeAndCreator()
1886 {
1887     wxUint32 type , creator ;
1888     if ( wxFileName::MacFindDefaultTypeAndCreator(GetExt() , &type ,
1889       &creator ) )
1890     {
1891         return MacSetTypeAndCreator( type , creator ) ;
1892     }
1893     return false;
1894 }
1895
1896 bool wxFileName::MacFindDefaultTypeAndCreator( const wxString& ext , wxUint32 *type , wxUint32 *creator )
1897 {
1898   MacEnsureDefaultExtensionsLoaded() ;
1899   wxString extl = ext.Lower() ;
1900   for( int i = gMacDefaultExtensions.Count() - 1 ; i >= 0 ; --i )
1901   {
1902     if ( gMacDefaultExtensions.Item(i).m_ext == extl )
1903     {
1904       *type = gMacDefaultExtensions.Item(i).m_type ;
1905       *creator = gMacDefaultExtensions.Item(i).m_creator ;
1906       return true ;
1907     }
1908   }
1909   return false ;
1910 }
1911
1912 void wxFileName::MacRegisterDefaultTypeAndCreator( const wxString& ext , wxUint32 type , wxUint32 creator )
1913 {
1914   MacEnsureDefaultExtensionsLoaded() ;
1915   MacDefaultExtensionRecord rec ;
1916   rec.m_type = type ;
1917   rec.m_creator = creator ;
1918   wxStrncpy( rec.m_ext , ext.Lower().c_str() , kMacExtensionMaxLength ) ;
1919   gMacDefaultExtensions.Add( rec ) ;
1920 }
1921 #endif