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 <windows.h>
  90 #include "wx/msw/winundef.h"
  91 #endif
  92
  93 #if defined(__WXMAC__)
  94   #include  "wx/mac/private.h"  // includes mac headers
  95 #endif
  96
  97 // utime() is POSIX so should normally be available on all Unices
  98 #ifdef __UNIX_LIKE__
  99 #include <sys/types.h>
 100 #include <utime.h>
 101 #include <sys/stat.h>
 102 #include <unistd.h>
 103 #endif
 104
 105 #ifdef __DJGPP__
 106 #include <unistd.h>
 107 #endif
 108
 109 #ifdef __MWERKS__
 110 #ifdef __MACH__
 111 #include <sys/types.h>
 112 #include <utime.h>
 113 #include <sys/stat.h>
 114 #include <unistd.h>
 115 #else
 116 #include <stat.h>
 117 #include <unistd.h>
 118 #include <unix.h>
 119 #endif
 120 #endif
 121
 122 #ifdef __WATCOMC__
 123 #include <io.h>
 124 #include <sys/utime.h>
 125 #include <sys/stat.h>
 126 #endif
 127
 128 #ifdef __VISAGECPP__
 129 #ifndef MAX_PATH
 130 #define MAX_PATH 256
 131 #endif
 132 #endif
 133
 134 #ifdef __EMX__
 135 #define MAX_PATH _MAX_PATH
 136 #endif
 137
 138 // ----------------------------------------------------------------------------
 139 // private classes
 140 // ----------------------------------------------------------------------------
 141
 142 // small helper class which opens and closes the file - we use it just to get
 143 // a file handle for the given file name to pass it to some Win32 API function
 144 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
 145
 146 class wxFileHandle
 147 {
 148 public:
 149     enum OpenMode
 150     {
 151         Read,
 152         Write
 153     };
 154
 155     wxFileHandle(const wxString& filename, OpenMode mode)
 156     {
 157         m_hFile = ::CreateFile
 158                     (
 159                      filename,                      // name
 160                      mode == Read ? GENERIC_READ    // access mask
 161                                   : GENERIC_WRITE,
 162                      0,                             // no sharing
 163                      NULL,                          // no secutity attr
 164                      OPEN_EXISTING,                 // creation disposition
 165                      0,                             // no flags
 166                      NULL                           // no template file
 167                     );
 168
 169         if ( m_hFile == INVALID_HANDLE_VALUE )
 170         {
 171             wxLogSysError(_("Failed to open '%s' for %s"),
 172                           filename.c_str(),
 173                           mode == Read ? _("reading") : _("writing"));
 174         }
 175     }
 176
 177     ~wxFileHandle()
 178     {
 179         if ( m_hFile != INVALID_HANDLE_VALUE )
 180         {
 181             if ( !::CloseHandle(m_hFile) )
 182             {
 183                 wxLogSysError(_("Failed to close file handle"));
 184             }
 185         }
 186     }
 187
 188     // return TRUE only if the file could be opened successfully
 189     bool IsOk() const { return m_hFile != INVALID_HANDLE_VALUE; }
 190
 191     // get the handle
 192     operator HANDLE() const { return m_hFile; }
 193
 194 private:
 195     HANDLE m_hFile;
 196 };
 197
 198 #endif // __WIN32__
 199
 200 // ----------------------------------------------------------------------------
 201 // private functions
 202 // ----------------------------------------------------------------------------
 203
 204 #if wxUSE_DATETIME && defined(__WIN32__) && !defined(__WXMICROWIN__)
 205
 206 // convert between wxDateTime and FILETIME which is a 64-bit value representing
 207 // the number of 100-nanosecond intervals since January 1, 1601.
 208
 209 static void ConvertFileTimeToWx(wxDateTime *dt, const FILETIME &ft)
 210 {
 211     FILETIME ftcopy = ft;
 212     FILETIME ftLocal;
 213     if ( !::FileTimeToLocalFileTime(&ftcopy, &ftLocal) )
 214     {
 215         wxLogLastError(_T("FileTimeToLocalFileTime"));
 216     }
 217
 218     SYSTEMTIME st;
 219     if ( !::FileTimeToSystemTime(&ftLocal, &st) )
 220     {
 221         wxLogLastError(_T("FileTimeToSystemTime"));
 222     }
 223
 224     dt->Set(st.wDay, wxDateTime::Month(st.wMonth - 1), st.wYear,
 225             st.wHour, st.wMinute, st.wSecond, st.wMilliseconds);
 226 }
 227
 228 static void ConvertWxToFileTime(FILETIME *ft, const wxDateTime& dt)
 229 {
 230     SYSTEMTIME st;
 231     st.wDay = dt.GetDay();
 232     st.wMonth = dt.GetMonth() + 1;
 233     st.wYear = dt.GetYear();
 234     st.wHour = dt.GetHour();
 235     st.wMinute = dt.GetMinute();
 236     st.wSecond = dt.GetSecond();
 237     st.wMilliseconds = dt.GetMillisecond();
 238
 239     FILETIME ftLocal;
 240     if ( !::SystemTimeToFileTime(&st, &ftLocal) )
 241     {
 242         wxLogLastError(_T("SystemTimeToFileTime"));
 243     }
 244
 245     if ( !::LocalFileTimeToFileTime(&ftLocal, ft) )
 246     {
 247         wxLogLastError(_T("LocalFileTimeToFileTime"));
 248     }
 249 }
 250
 251 #endif // wxUSE_DATETIME && __WIN32__
 252
 253 // return a string with the volume par
 254 static wxString wxGetVolumeString(const wxString& volume, wxPathFormat format)
 255 {
 256     wxString path;
 257
 258     if ( !volume.empty() )
 259     {
 260         format = wxFileName::GetFormat(format);
 261
 262         // Special Windows UNC paths hack, part 2: undo what we did in
 263         // SplitPath() and make an UNC path if we have a drive which is not a
 264         // single letter (hopefully the network shares can't be one letter only
 265         // although I didn't find any authoritative docs on this)
 266         if ( format == wxPATH_DOS && volume.length() > 1 )
 267         {
 268             path << wxFILE_SEP_PATH_DOS << wxFILE_SEP_PATH_DOS << volume;
 269         }
 270         else if  ( format == wxPATH_DOS || format == wxPATH_VMS )
 271         {
 272             path << volume << wxFileName::GetVolumeSeparator(format);
 273         }
 274         // else ignore
 275     }
 276
 277     return path;
 278 }
 279
 280 // ============================================================================
 281 // implementation
 282 // ============================================================================
 283
 284 // ----------------------------------------------------------------------------
 285 // wxFileName construction
 286 // ----------------------------------------------------------------------------
 287
 288 void wxFileName::Assign( const wxFileName &filepath )
 289 {
 290     m_volume = filepath.GetVolume();
 291     m_dirs = filepath.GetDirs();
 292     m_name = filepath.GetName();
 293     m_ext = filepath.GetExt();
 294     m_relative = filepath.m_relative;
 295 }
 296
 297 void wxFileName::Assign(const wxString& volume,
 298                         const wxString& path,
 299                         const wxString& name,
 300                         const wxString& ext,
 301                         wxPathFormat format )
 302 {
 303     SetPath( path, format );
 304
 305     m_volume = volume;
 306     m_ext = ext;
 307     m_name = name;
 308 }
 309
 310 void wxFileName::SetPath( const wxString &path, wxPathFormat format )
 311 {
 312     m_dirs.Clear();
 313
 314     if ( !path.empty() )
 315     {
 316         wxPathFormat my_format = GetFormat( format );
 317         wxString my_path = path;
 318
 319         // 1) Determine if the path is relative or absolute.
 320         wxChar leadingChar = my_path[0u];
 321
 322         switch (my_format)
 323         {
 324             case wxPATH_MAC:
 325                 m_relative = leadingChar == wxT(':');
 326
 327                 // We then remove a leading ":". The reason is in our
 328                 // storage form for relative paths:
 329                 // ":dir:file.txt" actually means "./dir/file.txt" in
 330                 // DOS notation and should get stored as
 331                 // (relative) (dir) (file.txt)
 332                 // "::dir:file.txt" actually means "../dir/file.txt"
 333                 // stored as (relative) (..) (dir) (file.txt)
 334                 // This is important only for the Mac as an empty dir
 335                 // actually means <UP>, whereas under DOS, double
 336                 // slashes can be ignored: "\\\\" is the same as "\\".
 337                 if (m_relative)
 338                     my_path.erase( 0, 1 );
 339                 break;
 340
 341             case wxPATH_VMS:
 342                 // TODO: what is the relative path format here?
 343                 m_relative = FALSE;
 344                 break;
 345
 346             case wxPATH_UNIX:
 347                 // the paths of the form "~" or "~username" are absolute
 348                 m_relative = leadingChar != wxT('/') && leadingChar != _T('~');
 349                 break;
 350
 351             case wxPATH_DOS:
 352                 m_relative = !IsPathSeparator(leadingChar, my_format);
 353                 break;
 354
 355             default:
 356                 wxFAIL_MSG( wxT("error") );
 357                 break;
 358         }
 359
 360         // 2) Break up the path into its members. If the original path
 361         //    was just "/" or "\\", m_dirs will be empty. We know from
 362         //    the m_relative field, if this means "nothing" or "root dir".
 363
 364         wxStringTokenizer tn( my_path, GetPathSeparators(my_format) );
 365
 366         while ( tn.HasMoreTokens() )
 367         {
 368             wxString token = tn.GetNextToken();
 369
 370             // Remove empty token under DOS and Unix, interpret them
 371             // as .. under Mac.
 372             if (token.empty())
 373             {
 374                 if (my_format == wxPATH_MAC)
 375                     m_dirs.Add( wxT("..") );
 376                 // else ignore
 377             }
 378             else
 379             {
 380                m_dirs.Add( token );
 381             }
 382         }
 383     }
 384     else // no path at all
 385     {
 386         m_relative = TRUE;
 387     }
 388 }
 389
 390 void wxFileName::Assign(const wxString& fullpath,
 391                         wxPathFormat format)
 392 {
 393     wxString volume, path, name, ext;
 394     SplitPath(fullpath, &volume, &path, &name, &ext, format);
 395
 396     Assign(volume, path, name, ext, format);
 397 }
 398
 399 void wxFileName::Assign(const wxString& fullpathOrig,
 400                         const wxString& fullname,
 401                         wxPathFormat format)
 402 {
 403     // always recognize fullpath as directory, even if it doesn't end with a
 404     // slash
 405     wxString fullpath = fullpathOrig;
 406     if ( !wxEndsWithPathSeparator(fullpath) )
 407     {
 408         fullpath += GetPathSeparator(format);
 409     }
 410
 411     wxString volume, path, name, ext;
 412
 413     // do some consistency checks in debug mode: the name should be really just
 414     // the filename and the path should be really just a path
 415 #ifdef __WXDEBUG__
 416     wxString pathDummy, nameDummy, extDummy;
 417
 418     SplitPath(fullname, &pathDummy, &name, &ext, format);
 419
 420     wxASSERT_MSG( pathDummy.empty(),
 421                   _T("the file name shouldn't contain the path") );
 422
 423     SplitPath(fullpath, &volume, &path, &nameDummy, &extDummy, format);
 424
 425     wxASSERT_MSG( nameDummy.empty() && extDummy.empty(),
 426                   _T("the path shouldn't contain file name nor extension") );
 427
 428 #else // !__WXDEBUG__
 429     SplitPath(fullname, NULL /* no path */, &name, &ext, format);
 430     SplitPath(fullpath, &volume, &path, NULL, NULL, format);
 431 #endif // __WXDEBUG__/!__WXDEBUG__
 432
 433     Assign(volume, path, name, ext, format);
 434 }
 435
 436 void wxFileName::AssignDir(const wxString& dir, wxPathFormat format)
 437 {
 438     Assign(dir, _T(""), format);
 439 }
 440
 441 void wxFileName::Clear()
 442 {
 443     m_dirs.Clear();
 444
 445     m_volume =
 446     m_name =
 447     m_ext = wxEmptyString;
 448
 449     // we don't have any absolute path for now
 450     m_relative = TRUE;
 451 }
 452
 453 /* static */
 454 wxFileName wxFileName::FileName(const wxString& file)
 455 {
 456     return wxFileName(file);
 457 }
 458
 459 /* static */
 460 wxFileName wxFileName::DirName(const wxString& dir)
 461 {
 462     wxFileName fn;
 463     fn.AssignDir(dir);
 464     return fn;
 465 }
 466
 467 // ----------------------------------------------------------------------------
 468 // existence tests
 469 // ----------------------------------------------------------------------------
 470
 471 bool wxFileName::FileExists() const
 472 {
 473     return wxFileName::FileExists( GetFullPath() );
 474 }
 475
 476 bool wxFileName::FileExists( const wxString &file )
 477 {
 478     return ::wxFileExists( file );
 479 }
 480
 481 bool wxFileName::DirExists() const
 482 {
 483     return wxFileName::DirExists( GetFullPath() );
 484 }
 485
 486 bool wxFileName::DirExists( const wxString &dir )
 487 {
 488     return ::wxDirExists( dir );
 489 }
 490
 491 // ----------------------------------------------------------------------------
 492 // CWD and HOME stuff
 493 // ----------------------------------------------------------------------------
 494
 495 void wxFileName::AssignCwd(const wxString& volume)
 496 {
 497     AssignDir(wxFileName::GetCwd(volume));
 498 }
 499
 500 /* static */
 501 wxString wxFileName::GetCwd(const wxString& volume)
 502 {
 503     // if we have the volume, we must get the current directory on this drive
 504     // and to do this we have to chdir to this volume - at least under Windows,
 505     // I don't know how to get the current drive on another volume elsewhere
 506     // (TODO)
 507     wxString cwdOld;
 508     if ( !volume.empty() )
 509     {
 510         cwdOld = wxGetCwd();
 511         SetCwd(volume + GetVolumeSeparator());
 512     }
 513
 514     wxString cwd = ::wxGetCwd();
 515
 516     if ( !volume.empty() )
 517     {
 518         SetCwd(cwdOld);
 519     }
 520
 521     return cwd;
 522 }
 523
 524 bool wxFileName::SetCwd()
 525 {
 526     return wxFileName::SetCwd( GetFullPath() );
 527 }
 528
 529 bool wxFileName::SetCwd( const wxString &cwd )
 530 {
 531     return ::wxSetWorkingDirectory( cwd );
 532 }
 533
 534 void wxFileName::AssignHomeDir()
 535 {
 536     AssignDir(wxFileName::GetHomeDir());
 537 }
 538
 539 wxString wxFileName::GetHomeDir()
 540 {
 541     return ::wxGetHomeDir();
 542 }
 543
 544 void wxFileName::AssignTempFileName(const wxString& prefix, wxFile *fileTemp)
 545 {
 546     wxString tempname = CreateTempFileName(prefix, fileTemp);
 547     if ( tempname.empty() )
 548     {
 549         // error, failed to get temp file name
 550         Clear();
 551     }
 552     else // ok
 553     {
 554         Assign(tempname);
 555     }
 556 }
 557
 558 /* static */
 559 wxString
 560 wxFileName::CreateTempFileName(const wxString& prefix, wxFile *fileTemp)
 561 {
 562     wxString path, dir, name;
 563
 564     // use the directory specified by the prefix
 565     SplitPath(prefix, &dir, &name, NULL /* extension */);
 566
 567 #if defined(__WINDOWS__) && !defined(__WXMICROWIN__)
 568
 569 #ifdef __WIN32__
 570     if ( dir.empty() )
 571     {
 572         if ( !::GetTempPath(MAX_PATH, wxStringBuffer(dir, MAX_PATH + 1)) )
 573         {
 574             wxLogLastError(_T("GetTempPath"));
 575         }
 576
 577         if ( dir.empty() )
 578         {
 579             // GetTempFileName() fails if we pass it an empty string
 580             dir = _T('.');
 581         }
 582     }
 583     else // we have a dir to create the file in
 584     {
 585         // ensure we use only the back slashes as GetTempFileName(), unlike all
 586         // the other APIs, is picky and doesn't accept the forward ones
 587         dir.Replace(_T("/"), _T("\\"));
 588     }
 589
 590     if ( !::GetTempFileName(dir, name, 0, wxStringBuffer(path, MAX_PATH + 1)) )
 591     {
 592         wxLogLastError(_T("GetTempFileName"));
 593
 594         path.clear();
 595     }
 596 #else // Win16
 597     if ( !::GetTempFileName(NULL, prefix, 0, wxStringBuffer(path, 1025)) )
 598     {
 599         path.clear();
 600     }
 601 #endif // Win32/16
 602
 603 #elif defined(__WXPM__)
 604     // for now just create a file
 605     //
 606     // future enhancements can be to set some extended attributes for file
 607     // systems OS/2 supports that have them (HPFS, FAT32) and security
 608     // (HPFS386)
 609     static const wxChar *szMktempSuffix = wxT("XXX");
 610     path << dir << _T('/') << name << szMktempSuffix;
 611
 612     // Temporarily remove - MN
 613     #ifndef __WATCOMC__
 614         ::DosCreateDir(wxStringBuffer(path, MAX_PATH), NULL);
 615     #endif
 616
 617 #else // !Windows, !OS/2
 618     if ( dir.empty() )
 619     {
 620 #if defined(__WXMAC__) && !defined(__DARWIN__)
 621         dir = wxMacFindFolder(  (short) kOnSystemDisk, kTemporaryFolderType, kCreateFolder ) ;
 622 #else // !Mac
 623         dir = wxGetenv(_T("TMP"));
 624         if ( dir.empty() )
 625         {
 626             dir = wxGetenv(_T("TEMP"));
 627         }
 628
 629         if ( dir.empty() )
 630         {
 631             // default
 632             #ifdef __DOS__
 633                 dir = _T(".");
 634             #else
 635                 dir = _T("/tmp");
 636             #endif
 637         }
 638 #endif // Mac/!Mac
 639     }
 640
 641     path = dir;
 642
 643     if ( !wxEndsWithPathSeparator(dir) &&
 644             (name.empty() || !wxIsPathSeparator(name[0u])) )
 645     {
 646         path += wxFILE_SEP_PATH;
 647     }
 648
 649     path += name;
 650
 651 #if defined(HAVE_MKSTEMP)
 652     // scratch space for mkstemp()
 653     path += _T("XXXXXX");
 654
 655     // we need to copy the path to the buffer in which mkstemp() can modify it
 656     wxCharBuffer buf( wxConvFile.cWX2MB( path ) );
 657
 658     // cast is safe because the string length doesn't change
 659     int fdTemp = mkstemp( (char*)(const char*) buf );
 660     if ( fdTemp == -1 )
 661     {
 662         // this might be not necessary as mkstemp() on most systems should have
 663         // already done it but it doesn't hurt neither...
 664         path.clear();
 665     }
 666     else // mkstemp() succeeded
 667     {
 668         path = wxConvFile.cMB2WX( (const char*) buf );
 669
 670         // avoid leaking the fd
 671         if ( fileTemp )
 672         {
 673             fileTemp->Attach(fdTemp);
 674         }
 675         else
 676         {
 677             close(fdTemp);
 678         }
 679     }
 680 #else // !HAVE_MKSTEMP
 681
 682 #ifdef HAVE_MKTEMP
 683     // same as above
 684     path += _T("XXXXXX");
 685
 686     wxCharBuffer buf = wxConvFile.cWX2MB( path );
 687     if ( !mktemp( (const char*) buf ) )
 688     {
 689         path.clear();
 690     }
 691     else
 692     {
 693         path = wxConvFile.cMB2WX( (const char*) buf );
 694     }
 695 #else // !HAVE_MKTEMP (includes __DOS__)
 696     // generate the unique file name ourselves
 697     #ifndef __DOS__
 698     path << (unsigned int)getpid();
 699     #endif
 700
 701     wxString pathTry;
 702
 703     static const size_t numTries = 1000;
 704     for ( size_t n = 0; n < numTries; n++ )
 705     {
 706         // 3 hex digits is enough for numTries == 1000 < 4096
 707         pathTry = path + wxString::Format(_T("%.03x"), n);
 708         if ( !wxFile::Exists(pathTry) )
 709         {
 710             break;
 711         }
 712
 713         pathTry.clear();
 714     }
 715
 716     path = pathTry;
 717 #endif // HAVE_MKTEMP/!HAVE_MKTEMP
 718
 719     if ( !path.empty() )
 720     {
 721     }
 722 #endif // HAVE_MKSTEMP/!HAVE_MKSTEMP
 723
 724 #endif // Windows/!Windows
 725
 726     if ( path.empty() )
 727     {
 728         wxLogSysError(_("Failed to create a temporary file name"));
 729     }
 730     else if ( fileTemp && !fileTemp->IsOpened() )
 731     {
 732         // open the file - of course, there is a race condition here, this is
 733         // why we always prefer using mkstemp()...
 734         //
 735         // NB: GetTempFileName() under Windows creates the file, so using
 736         //     write_excl there would fail
 737         if ( !fileTemp->Open(path,
 738 #if defined(__WINDOWS__) && !defined(__WXMICROWIN__)
 739                              wxFile::write,
 740 #else
 741                              wxFile::write_excl,
 742 #endif
 743                              wxS_IRUSR | wxS_IWUSR) )
 744         {
 745             // FIXME: If !ok here should we loop and try again with another
 746             //        file name?  That is the standard recourse if open(O_EXCL)
 747             //        fails, though of course it should be protected against
 748             //        possible infinite looping too.
 749
 750             wxLogError(_("Failed to open temporary file."));
 751
 752             path.clear();
 753         }
 754     }
 755
 756     return path;
 757 }
 758
 759 // ----------------------------------------------------------------------------
 760 // directory operations
 761 // ----------------------------------------------------------------------------
 762
 763 bool wxFileName::Mkdir( int perm, int flags )
 764 {
 765     return wxFileName::Mkdir( GetFullPath(), perm, flags );
 766 }
 767
 768 bool wxFileName::Mkdir( const wxString& dir, int perm, int flags )
 769 {
 770     if ( flags & wxPATH_MKDIR_FULL )
 771     {
 772         // split the path in components
 773         wxFileName filename;
 774         filename.AssignDir(dir);
 775
 776         wxString currPath;
 777         if ( filename.HasVolume())
 778         {
 779             currPath << wxGetVolumeString(filename.GetVolume(), wxPATH_NATIVE);
 780         }
 781
 782         wxArrayString dirs = filename.GetDirs();
 783         size_t count = dirs.GetCount();
 784         for ( size_t i = 0; i < count; i++ )
 785         {
 786             if ( i > 0 ||
 787 #if defined(__WXMAC__) && !defined(__DARWIN__)
 788                         // relative pathnames are exactely the other way round under mac...
 789                 !filename.IsAbsolute()
 790 #else
 791                 filename.IsAbsolute()
 792 #endif
 793             )
 794                 currPath += wxFILE_SEP_PATH;
 795             currPath += dirs[i];
 796
 797             if (!DirExists(currPath))
 798             {
 799                 if (!wxMkdir(currPath, perm))
 800                 {
 801                     // no need to try creating further directories
 802                     return FALSE;
 803                 }
 804             }
 805         }
 806
 807         return TRUE;
 808
 809     }
 810
 811     return ::wxMkdir( dir, perm );
 812 }
 813
 814 bool wxFileName::Rmdir()
 815 {
 816     return wxFileName::Rmdir( GetFullPath() );
 817 }
 818
 819 bool wxFileName::Rmdir( const wxString &dir )
 820 {
 821     return ::wxRmdir( dir );
 822 }
 823
 824 // ----------------------------------------------------------------------------
 825 // path normalization
 826 // ----------------------------------------------------------------------------
 827
 828 bool wxFileName::Normalize(int flags,
 829                            const wxString& cwd,
 830                            wxPathFormat format)
 831 {
 832     // the existing path components
 833     wxArrayString dirs = GetDirs();
 834
 835     // the path to prepend in front to make the path absolute
 836     wxFileName curDir;
 837
 838     format = GetFormat(format);
 839
 840     // make the path absolute
 841     if ( (flags & wxPATH_NORM_ABSOLUTE) && !IsAbsolute(format) )
 842     {
 843         if ( cwd.empty() )
 844         {
 845             curDir.AssignCwd(GetVolume());
 846         }
 847         else // cwd provided
 848         {
 849             curDir.AssignDir(cwd);
 850         }
 851
 852         // the path may be not absolute because it doesn't have the volume name
 853         // but in this case we shouldn't modify the directory components of it
 854         // but just set the current volume
 855         if ( !HasVolume() && curDir.HasVolume() )
 856         {
 857             SetVolume(curDir.GetVolume());
 858
 859             if ( !m_relative )
 860             {
 861                 // yes, it was the case - we don't need curDir then
 862                 curDir.Clear();
 863             }
 864         }
 865     }
 866
 867     // handle ~ stuff under Unix only
 868     if ( (format == wxPATH_UNIX) && (flags & wxPATH_NORM_TILDE) )
 869     {
 870         if ( !dirs.IsEmpty() )
 871         {
 872             wxString dir = dirs[0u];
 873             if ( !dir.empty() && dir[0u] == _T('~') )
 874             {
 875                 curDir.AssignDir(wxGetUserHome(dir.c_str() + 1));
 876
 877                 dirs.RemoveAt(0u);
 878             }
 879         }
 880     }
 881
 882     // transform relative path into abs one
 883     if ( curDir.IsOk() )
 884     {
 885         wxArrayString dirsNew = curDir.GetDirs();
 886         size_t count = dirs.GetCount();
 887         for ( size_t n = 0; n < count; n++ )
 888         {
 889             dirsNew.Add(dirs[n]);
 890         }
 891
 892         dirs = dirsNew;
 893     }
 894
 895     // now deal with ".", ".." and the rest
 896     m_dirs.Empty();
 897     size_t count = dirs.GetCount();
 898     for ( size_t n = 0; n < count; n++ )
 899     {
 900         wxString dir = dirs[n];
 901
 902         if ( flags & wxPATH_NORM_DOTS )
 903         {
 904             if ( dir == wxT(".") )
 905             {
 906                 // just ignore
 907                 continue;
 908             }
 909
 910             if ( dir == wxT("..") )
 911             {
 912                 if ( m_dirs.IsEmpty() )
 913                 {
 914                     wxLogError(_("The path '%s' contains too many \"..\"!"),
 915                                GetFullPath().c_str());
 916                     return FALSE;
 917                 }
 918
 919                 m_dirs.RemoveAt(m_dirs.GetCount() - 1);
 920                 continue;
 921             }
 922         }
 923
 924         if ( flags & wxPATH_NORM_ENV_VARS )
 925         {
 926             dir = wxExpandEnvVars(dir);
 927         }
 928
 929         if ( (flags & wxPATH_NORM_CASE) && !IsCaseSensitive(format) )
 930         {
 931             dir.MakeLower();
 932         }
 933
 934         m_dirs.Add(dir);
 935     }
 936
 937     if ( (flags & wxPATH_NORM_CASE) && !IsCaseSensitive(format) )
 938     {
 939         // VZ: expand env vars here too?
 940
 941         m_name.MakeLower();
 942         m_ext.MakeLower();
 943     }
 944
 945     // we do have the path now
 946     //
 947     // NB: need to do this before (maybe) calling Assign() below
 948     m_relative = FALSE;
 949
 950 #if defined(__WIN32__)
 951     if ( (flags & wxPATH_NORM_LONG) && (format == wxPATH_DOS) )
 952     {
 953         Assign(GetLongPath());
 954     }
 955 #endif // Win32
 956
 957     return TRUE;
 958 }
 959
 960 // ----------------------------------------------------------------------------
 961 // absolute/relative paths
 962 // ----------------------------------------------------------------------------
 963
 964 bool wxFileName::IsAbsolute(wxPathFormat format) const
 965 {
 966     // if our path doesn't start with a path separator, it's not an absolute
 967     // path
 968     if ( m_relative )
 969         return FALSE;
 970
 971     if ( !GetVolumeSeparator(format).empty() )
 972     {
 973         // this format has volumes and an absolute path must have one, it's not
 974         // enough to have the full path to bean absolute file under Windows
 975         if ( GetVolume().empty() )
 976             return FALSE;
 977     }
 978
 979     return TRUE;
 980 }
 981
 982 bool wxFileName::MakeRelativeTo(const wxString& pathBase, wxPathFormat format)
 983 {
 984     wxFileName fnBase(pathBase, format);
 985
 986     // get cwd only once - small time saving
 987     wxString cwd = wxGetCwd();
 988     Normalize(wxPATH_NORM_ALL & ~wxPATH_NORM_CASE, cwd, format);
 989     fnBase.Normalize(wxPATH_NORM_ALL & ~wxPATH_NORM_CASE, cwd, format);
 990
 991     bool withCase = IsCaseSensitive(format);
 992
 993     // we can't do anything if the files live on different volumes
 994     if ( !GetVolume().IsSameAs(fnBase.GetVolume(), withCase) )
 995     {
 996         // nothing done
 997         return FALSE;
 998     }
 999
1000     // same drive, so we don't need our volume
1001     m_volume.clear();
1002
1003     // remove common directories starting at the top
1004     while ( !m_dirs.IsEmpty() && !fnBase.m_dirs.IsEmpty() &&
1005                 m_dirs[0u].IsSameAs(fnBase.m_dirs[0u], withCase) )
1006     {
1007         m_dirs.RemoveAt(0);
1008         fnBase.m_dirs.RemoveAt(0);
1009     }
1010
1011     // add as many ".." as needed
1012     size_t count = fnBase.m_dirs.GetCount();
1013     for ( size_t i = 0; i < count; i++ )
1014     {
1015         m_dirs.Insert(wxT(".."), 0u);
1016     }
1017
1018     if ( format == wxPATH_UNIX || format == wxPATH_DOS )
1019     {
1020         // a directory made relative with respect to itself is '.' under Unix
1021         // and DOS, by definition (but we don't have to insert "./" for the
1022         // files)
1023         if ( m_dirs.IsEmpty() && IsDir() )
1024         {
1025             m_dirs.Add(_T('.'));
1026         }
1027     }
1028
1029     m_relative = TRUE;
1030
1031     // we were modified
1032     return TRUE;
1033 }
1034
1035 // ----------------------------------------------------------------------------
1036 // filename kind tests
1037 // ----------------------------------------------------------------------------
1038
1039 bool wxFileName::SameAs(const wxFileName& filepath, wxPathFormat format) const
1040 {
1041     wxFileName fn1 = *this,
1042                fn2 = filepath;
1043
1044     // get cwd only once - small time saving
1045     wxString cwd = wxGetCwd();
1046     fn1.Normalize(wxPATH_NORM_ALL & ~wxPATH_NORM_CASE, cwd, format);
1047     fn2.Normalize(wxPATH_NORM_ALL & ~wxPATH_NORM_CASE, cwd, format);
1048
1049     if ( fn1.GetFullPath() == fn2.GetFullPath() )
1050         return TRUE;
1051
1052     // TODO: compare inodes for Unix, this works even when filenames are
1053     //       different but files are the same (symlinks) (VZ)
1054
1055     return FALSE;
1056 }
1057
1058 /* static */
1059 bool wxFileName::IsCaseSensitive( wxPathFormat format )
1060 {
1061     // only Unix filenames are truely case-sensitive
1062     return GetFormat(format) == wxPATH_UNIX;
1063 }
1064
1065 /* static */
1066 wxString wxFileName::GetVolumeSeparator(wxPathFormat format)
1067 {
1068     wxString sepVol;
1069
1070     if ( (GetFormat(format) == wxPATH_DOS) ||
1071          (GetFormat(format) == wxPATH_VMS) )
1072     {
1073         sepVol = wxFILE_SEP_DSK;
1074     }
1075     //else: leave empty
1076
1077     return sepVol;
1078 }
1079
1080 /* static */
1081 wxString wxFileName::GetPathSeparators(wxPathFormat format)
1082 {
1083     wxString seps;
1084     switch ( GetFormat(format) )
1085     {
1086         case wxPATH_DOS:
1087             // accept both as native APIs do but put the native one first as
1088             // this is the one we use in GetFullPath()
1089             seps << wxFILE_SEP_PATH_DOS << wxFILE_SEP_PATH_UNIX;
1090             break;
1091
1092         default:
1093             wxFAIL_MSG( _T("unknown wxPATH_XXX style") );
1094             // fall through
1095
1096         case wxPATH_UNIX:
1097             seps = wxFILE_SEP_PATH_UNIX;
1098             break;
1099
1100         case wxPATH_MAC:
1101             seps = wxFILE_SEP_PATH_MAC;
1102             break;
1103
1104         case wxPATH_VMS:
1105             seps = wxFILE_SEP_PATH_VMS;
1106             break;
1107     }
1108
1109     return seps;
1110 }
1111
1112 /* static */
1113 bool wxFileName::IsPathSeparator(wxChar ch, wxPathFormat format)
1114 {
1115     // wxString::Find() doesn't work as expected with NUL - it will always find
1116     // it, so it is almost surely a bug if this function is called with NUL arg
1117     wxASSERT_MSG( ch != _T('\0'), _T("shouldn't be called with NUL") );
1118
1119     return GetPathSeparators(format).Find(ch) != wxNOT_FOUND;
1120 }
1121
1122 // ----------------------------------------------------------------------------
1123 // path components manipulation
1124 // ----------------------------------------------------------------------------
1125
1126 void wxFileName::AppendDir( const wxString &dir )
1127 {
1128     m_dirs.Add( dir );
1129 }
1130
1131 void wxFileName::PrependDir( const wxString &dir )
1132 {
1133     m_dirs.Insert( dir, 0 );
1134 }
1135
1136 void wxFileName::InsertDir( int before, const wxString &dir )
1137 {
1138     m_dirs.Insert( dir, before );
1139 }
1140
1141 void wxFileName::RemoveDir( int pos )
1142 {
1143     m_dirs.Remove( (size_t)pos );
1144 }
1145
1146 // ----------------------------------------------------------------------------
1147 // accessors
1148 // ----------------------------------------------------------------------------
1149
1150 void wxFileName::SetFullName(const wxString& fullname)
1151 {
1152     SplitPath(fullname, NULL /* no path */, &m_name, &m_ext);
1153 }
1154
1155 wxString wxFileName::GetFullName() const
1156 {
1157     wxString fullname = m_name;
1158     if ( !m_ext.empty() )
1159     {
1160         fullname << wxFILE_SEP_EXT << m_ext;
1161     }
1162
1163     return fullname;
1164 }
1165
1166 wxString wxFileName::GetPath( int flags, wxPathFormat format ) const
1167 {
1168     format = GetFormat( format );
1169
1170     wxString fullpath;
1171
1172     // return the volume with the path as well if requested
1173     if ( flags & wxPATH_GET_VOLUME )
1174     {
1175         fullpath += wxGetVolumeString(GetVolume(), format);
1176     }
1177
1178     // the leading character
1179     switch ( format )
1180     {
1181         case wxPATH_MAC:
1182             if ( m_relative )
1183                 fullpath += wxFILE_SEP_PATH_MAC;
1184             break;
1185
1186         case wxPATH_DOS:
1187             if (!m_relative)
1188                 fullpath += wxFILE_SEP_PATH_DOS;
1189             break;
1190
1191         default:
1192             wxFAIL_MSG( _T("unknown path format") );
1193             // fall through
1194
1195         case wxPATH_UNIX:
1196             if ( !m_relative )
1197             {
1198                 // normally the absolute file names starts with a slash with
1199                 // one exception: file names like "~/foo.bar" don't have it
1200                 if ( m_dirs.IsEmpty() || m_dirs[0u] != _T('~') )
1201                 {
1202                     fullpath += wxFILE_SEP_PATH_UNIX;
1203                 }
1204             }
1205             break;
1206
1207         case wxPATH_VMS:
1208             // no leading character here but use this place to unset
1209             // wxPATH_GET_SEPARATOR flag: under VMS it doesn't make sense as,
1210             // if I understand correctly, there should never be a dot before
1211             // the closing bracket
1212             flags &= ~wxPATH_GET_SEPARATOR;
1213     }
1214
1215     // then concatenate all the path components using the path separator
1216     size_t dirCount = m_dirs.GetCount();
1217     if ( dirCount )
1218     {
1219         if ( format == wxPATH_VMS )
1220         {
1221             fullpath += wxT('[');
1222         }
1223
1224         for ( size_t i = 0; i < dirCount; i++ )
1225         {
1226             switch (format)
1227             {
1228                 case wxPATH_MAC:
1229                     if ( m_dirs[i] == wxT(".") )
1230                     {
1231                         // skip appending ':', this shouldn't be done in this
1232                         // case as "::" is interpreted as ".." under Unix
1233                         continue;
1234                     }
1235
1236                     // convert back from ".." to nothing
1237                     if ( m_dirs[i] != wxT("..") )
1238                          fullpath += m_dirs[i];
1239                     break;
1240
1241                 default:
1242                     wxFAIL_MSG( wxT("unexpected path format") );
1243                     // still fall through
1244
1245                 case wxPATH_DOS:
1246                 case wxPATH_UNIX:
1247                     fullpath += m_dirs[i];
1248                     break;
1249
1250                 case wxPATH_VMS:
1251                     // TODO: What to do with ".." under VMS
1252
1253                     // convert back from ".." to nothing
1254                     if ( m_dirs[i] != wxT("..") )
1255                         fullpath += m_dirs[i];
1256                     break;
1257             }
1258
1259             if ( (flags & wxPATH_GET_SEPARATOR) || (i != dirCount - 1) )
1260                 fullpath += GetPathSeparator(format);
1261         }
1262
1263         if ( format == wxPATH_VMS )
1264         {
1265             fullpath += wxT(']');
1266         }
1267     }
1268
1269     return fullpath;
1270 }
1271
1272 wxString wxFileName::GetFullPath( wxPathFormat format ) const
1273 {
1274     // we already have a function to get the path
1275     wxString fullpath = GetPath(wxPATH_GET_VOLUME | wxPATH_GET_SEPARATOR,
1276                                 format);
1277
1278     // now just add the file name and extension to it
1279     fullpath += GetFullName();
1280
1281     return fullpath;
1282 }
1283
1284 // Return the short form of the path (returns identity on non-Windows platforms)
1285 wxString wxFileName::GetShortPath() const
1286 {
1287 #if defined(__WXMSW__) && defined(__WIN32__) && !defined(__WXMICROWIN__)
1288     wxString path(GetFullPath());
1289     wxString pathOut;
1290     DWORD sz = ::GetShortPathName(path, NULL, 0);
1291     bool ok = sz != 0;
1292     if ( ok )
1293     {
1294         ok = ::GetShortPathName
1295                (
1296                 path,
1297                 pathOut.GetWriteBuf(sz),
1298                 sz
1299                ) != 0;
1300         pathOut.UngetWriteBuf();
1301     }
1302     if (ok)
1303         return pathOut;
1304
1305     return path;
1306 #else
1307     return GetFullPath();
1308 #endif
1309 }
1310
1311 // Return the long form of the path (returns identity on non-Windows platforms)
1312 wxString wxFileName::GetLongPath() const
1313 {
1314     wxString pathOut,
1315              path = GetFullPath();
1316
1317 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
1318     bool success = FALSE;
1319
1320 #if wxUSE_DYNAMIC_LOADER
1321     typedef DWORD (WINAPI *GET_LONG_PATH_NAME)(const wxChar *, wxChar *, DWORD);
1322
1323     static bool s_triedToLoad = FALSE;
1324
1325     if ( !s_triedToLoad )
1326     {
1327         // suppress the errors about missing GetLongPathName[AW]
1328         wxLogNull noLog;
1329
1330         s_triedToLoad = TRUE;
1331         wxDynamicLibrary dllKernel(_T("kernel32"));
1332         if ( dllKernel.IsLoaded() )
1333         {
1334             // may succeed or fail depending on the Windows version
1335             static GET_LONG_PATH_NAME s_pfnGetLongPathName = NULL;
1336 #ifdef _UNICODE
1337             s_pfnGetLongPathName = (GET_LONG_PATH_NAME) dllKernel.GetSymbol(_T("GetLongPathNameW"));
1338 #else
1339             s_pfnGetLongPathName = (GET_LONG_PATH_NAME) dllKernel.GetSymbol(_T("GetLongPathNameA"));
1340 #endif
1341
1342             if ( s_pfnGetLongPathName )
1343             {
1344                 DWORD dwSize = (*s_pfnGetLongPathName)(path, NULL, 0);
1345                 bool ok = dwSize > 0;
1346
1347                 if ( ok )
1348                 {
1349                     DWORD sz = (*s_pfnGetLongPathName)(path, NULL, 0);
1350                     ok = sz != 0;
1351                     if ( ok )
1352                     {
1353                         ok = (*s_pfnGetLongPathName)
1354                                 (
1355                                 path,
1356                                 pathOut.GetWriteBuf(sz),
1357                                 sz
1358                                 ) != 0;
1359                         pathOut.UngetWriteBuf();
1360
1361                         success = TRUE;
1362                     }
1363                 }
1364             }
1365         }
1366     }
1367
1368     if (success)
1369         return pathOut;
1370 #endif // wxUSE_DYNAMIC_LOADER
1371
1372     if (!success)
1373     {
1374         // The OS didn't support GetLongPathName, or some other error.
1375         // We need to call FindFirstFile on each component in turn.
1376
1377         WIN32_FIND_DATA findFileData;
1378         HANDLE hFind;
1379
1380         if ( HasVolume() )
1381             pathOut = GetVolume() +
1382                       GetVolumeSeparator(wxPATH_DOS) +
1383                       GetPathSeparator(wxPATH_DOS);
1384         else
1385             pathOut = wxEmptyString;
1386
1387         wxArrayString dirs = GetDirs();
1388         dirs.Add(GetFullName());
1389
1390         wxString tmpPath;
1391
1392         size_t count = dirs.GetCount();
1393         for ( size_t i = 0; i < count; i++ )
1394         {
1395             // We're using pathOut to collect the long-name path, but using a
1396             // temporary for appending the last path component which may be
1397             // short-name
1398             tmpPath = pathOut + dirs[i];
1399
1400             if ( tmpPath.empty() )
1401                 continue;
1402
1403             // can't see this being necessary? MF
1404             if ( tmpPath.Last() == GetVolumeSeparator(wxPATH_DOS) )
1405             {
1406                 // Can't pass a drive and root dir to FindFirstFile,
1407                 // so continue to next dir
1408                 tmpPath += wxFILE_SEP_PATH;
1409                 pathOut = tmpPath;
1410                 continue;
1411             }
1412
1413             hFind = ::FindFirstFile(tmpPath, &findFileData);
1414             if (hFind == INVALID_HANDLE_VALUE)
1415             {
1416                 // Error: most likely reason is that path doesn't exist, so
1417                 // append any unprocessed parts and return
1418                 for ( i += 1; i < count; i++ )
1419                     tmpPath += wxFILE_SEP_PATH + dirs[i];
1420
1421                 return tmpPath;
1422             }
1423
1424             pathOut += findFileData.cFileName;
1425             if ( (i < (count-1)) )
1426                 pathOut += wxFILE_SEP_PATH;
1427
1428             ::FindClose(hFind);
1429         }
1430     }
1431 #else // !Win32
1432     pathOut = path;
1433 #endif // Win32/!Win32
1434
1435     return pathOut;
1436 }
1437
1438 wxPathFormat wxFileName::GetFormat( wxPathFormat format )
1439 {
1440     if (format == wxPATH_NATIVE)
1441     {
1442 #if defined(__WXMSW__) || defined(__WXPM__) || defined(__DOS__)
1443         format = wxPATH_DOS;
1444 #elif defined(__WXMAC__) && !defined(__DARWIN__)
1445         format = wxPATH_MAC;
1446 #elif defined(__VMS)
1447         format = wxPATH_VMS;
1448 #else
1449         format = wxPATH_UNIX;
1450 #endif
1451     }
1452     return format;
1453 }
1454
1455 // ----------------------------------------------------------------------------
1456 // path splitting function
1457 // ----------------------------------------------------------------------------
1458
1459 /* static */
1460 void wxFileName::SplitPath(const wxString& fullpathWithVolume,
1461                            wxString *pstrVolume,
1462                            wxString *pstrPath,
1463                            wxString *pstrName,
1464                            wxString *pstrExt,
1465                            wxPathFormat format)
1466 {
1467     format = GetFormat(format);
1468
1469     wxString fullpath = fullpathWithVolume;
1470
1471     // under VMS the end of the path is ']', not the path separator used to
1472     // separate the components
1473     wxString sepPath = format == wxPATH_VMS ? wxString(_T(']'))
1474                                             : GetPathSeparators(format);
1475
1476     // special Windows UNC paths hack: transform \\share\path into share:path
1477     if ( format == wxPATH_DOS )
1478     {
1479         if ( fullpath.length() >= 4 &&
1480                 fullpath[0u] == wxFILE_SEP_PATH_DOS &&
1481                     fullpath[1u] == wxFILE_SEP_PATH_DOS )
1482         {
1483             fullpath.erase(0, 2);
1484
1485             size_t posFirstSlash = fullpath.find_first_of(sepPath);
1486             if ( posFirstSlash != wxString::npos )
1487             {
1488                 fullpath[posFirstSlash] = wxFILE_SEP_DSK;
1489
1490                 // UNC paths are always absolute, right? (FIXME)
1491                 fullpath.insert(posFirstSlash + 1, wxFILE_SEP_PATH_DOS);
1492             }
1493         }
1494     }
1495
1496     // We separate the volume here
1497     if ( format == wxPATH_DOS || format == wxPATH_VMS )
1498     {
1499         wxString sepVol = GetVolumeSeparator(format);
1500
1501         size_t posFirstColon = fullpath.find_first_of(sepVol);
1502         if ( posFirstColon != wxString::npos )
1503         {
1504             if ( pstrVolume )
1505             {
1506                 *pstrVolume = fullpath.Left(posFirstColon);
1507             }
1508
1509             // remove the volume name and the separator from the full path
1510             fullpath.erase(0, posFirstColon + sepVol.length());
1511         }
1512     }
1513
1514     // find the positions of the last dot and last path separator in the path
1515     size_t posLastDot = fullpath.find_last_of(wxFILE_SEP_EXT);
1516     size_t posLastSlash = fullpath.find_last_of(sepPath);
1517
1518     if ( (posLastDot != wxString::npos) &&
1519             ((format == wxPATH_UNIX) || (format == wxPATH_VMS)) )
1520     {
1521         if ( (posLastDot == 0) ||
1522              (fullpath[posLastDot - 1] == sepPath[0u] ) )
1523         {
1524             // under Unix and VMS, dot may be (and commonly is) the first
1525             // character of the filename, don't treat the entire filename as
1526             // extension in this case
1527             posLastDot = wxString::npos;
1528         }
1529     }
1530
1531     // if we do have a dot and a slash, check that the dot is in the name part
1532     if ( (posLastDot != wxString::npos) &&
1533          (posLastSlash != wxString::npos) &&
1534          (posLastDot < posLastSlash) )
1535     {
1536         // the dot is part of the path, not the start of the extension
1537         posLastDot = wxString::npos;
1538     }
1539
1540     // now fill in the variables provided by user
1541     if ( pstrPath )
1542     {
1543         if ( posLastSlash == wxString::npos )
1544         {
1545             // no path at all
1546             pstrPath->Empty();
1547         }
1548         else
1549         {
1550             // take everything up to the path separator but take care to make
1551             // the path equal to something like '/', not empty, for the files
1552             // immediately under root directory
1553             size_t len = posLastSlash;
1554
1555             // this rule does not apply to mac since we do not start with colons (sep)
1556             // except for relative paths
1557             if ( !len && format != wxPATH_MAC)
1558                 len++;
1559
1560             *pstrPath = fullpath.Left(len);
1561
1562             // special VMS hack: remove the initial bracket
1563             if ( format == wxPATH_VMS )
1564             {
1565                 if ( (*pstrPath)[0u] == _T('[') )
1566                     pstrPath->erase(0, 1);
1567             }
1568         }
1569     }
1570
1571     if ( pstrName )
1572     {
1573         // take all characters starting from the one after the last slash and
1574         // up to, but excluding, the last dot
1575         size_t nStart = posLastSlash == wxString::npos ? 0 : posLastSlash + 1;
1576         size_t count;
1577         if ( posLastDot == wxString::npos )
1578         {
1579             // take all until the end
1580             count = wxString::npos;
1581         }
1582         else if ( posLastSlash == wxString::npos )
1583         {
1584             count = posLastDot;
1585         }
1586         else // have both dot and slash
1587         {
1588             count = posLastDot - posLastSlash - 1;
1589         }
1590
1591         *pstrName = fullpath.Mid(nStart, count);
1592     }
1593
1594     if ( pstrExt )
1595     {
1596         if ( posLastDot == wxString::npos )
1597         {
1598             // no extension
1599             pstrExt->Empty();
1600         }
1601         else
1602         {
1603             // take everything after the dot
1604             *pstrExt = fullpath.Mid(posLastDot + 1);
1605         }
1606     }
1607 }
1608
1609 /* static */
1610 void wxFileName::SplitPath(const wxString& fullpath,
1611                            wxString *path,
1612                            wxString *name,
1613                            wxString *ext,
1614                            wxPathFormat format)
1615 {
1616     wxString volume;
1617     SplitPath(fullpath, &volume, path, name, ext, format);
1618
1619     if ( path )
1620     {
1621         path->Prepend(wxGetVolumeString(volume, format));
1622     }
1623 }
1624
1625 // ----------------------------------------------------------------------------
1626 // time functions
1627 // ----------------------------------------------------------------------------
1628
1629 #if wxUSE_DATETIME
1630
1631 bool wxFileName::SetTimes(const wxDateTime *dtAccess,
1632                           const wxDateTime *dtMod,
1633                           const wxDateTime *dtCreate)
1634 {
1635 #if defined(__WIN32__)
1636     if ( IsDir() )
1637     {
1638         // VZ: please let me know how to do this if you can
1639         wxFAIL_MSG( _T("SetTimes() not implemented for the directories") );
1640     }
1641     else // file
1642     {
1643         wxFileHandle fh(GetFullPath(), wxFileHandle::Write);
1644         if ( fh.IsOk() )
1645         {
1646             FILETIME ftAccess, ftCreate, ftWrite;
1647
1648             if ( dtCreate )
1649                 ConvertWxToFileTime(&ftCreate, *dtCreate);
1650             if ( dtAccess )
1651                 ConvertWxToFileTime(&ftAccess, *dtAccess);
1652             if ( dtMod )
1653                 ConvertWxToFileTime(&ftWrite, *dtMod);
1654
1655             if ( ::SetFileTime(fh,
1656                                dtCreate ? &ftCreate : NULL,
1657                                dtAccess ? &ftAccess : NULL,
1658                                dtMod ? &ftWrite : NULL) )
1659             {
1660                 return TRUE;
1661             }
1662         }
1663     }
1664 #elif defined(__UNIX_LIKE__) || (defined(__DOS__) && defined(__WATCOMC__))
1665     if ( !dtAccess && !dtMod )
1666     {
1667         // can't modify the creation time anyhow, don't try
1668         return TRUE;
1669     }
1670
1671     // if dtAccess or dtMod is not specified, use the other one (which must be
1672     // non NULL because of the test above) for both times
1673     utimbuf utm;
1674     utm.actime = dtAccess ? dtAccess->GetTicks() : dtMod->GetTicks();
1675     utm.modtime = dtMod ? dtMod->GetTicks() : dtAccess->GetTicks();
1676     if ( utime(GetFullPath().fn_str(), &utm) == 0 )
1677     {
1678         return TRUE;
1679     }
1680 #else // other platform
1681 #endif // platforms
1682
1683     wxLogSysError(_("Failed to modify file times for '%s'"),
1684                   GetFullPath().c_str());
1685
1686     return FALSE;
1687 }
1688
1689 bool wxFileName::Touch()
1690 {
1691 #if defined(__UNIX_LIKE__)
1692     // under Unix touching file is simple: just pass NULL to utime()
1693     if ( utime(GetFullPath().fn_str(), NULL) == 0 )
1694     {
1695         return TRUE;
1696     }
1697
1698     wxLogSysError(_("Failed to touch the file '%s'"), GetFullPath().c_str());
1699
1700     return FALSE;
1701 #else // other platform
1702     wxDateTime dtNow = wxDateTime::Now();
1703
1704     return SetTimes(&dtNow, &dtNow, NULL /* don't change create time */);
1705 #endif // platforms
1706 }
1707
1708 bool wxFileName::GetTimes(wxDateTime *dtAccess,
1709                           wxDateTime *dtMod,
1710                           wxDateTime *dtCreate) const
1711 {
1712 #if defined(__WIN32__)
1713     // we must use different methods for the files and directories under
1714     // Windows as CreateFile(GENERIC_READ) doesn't work for the directories and
1715     // CreateFile(FILE_FLAG_BACKUP_SEMANTICS) works -- but only under NT and
1716     // not 9x
1717     bool ok;
1718     FILETIME ftAccess, ftCreate, ftWrite;
1719     if ( IsDir() )
1720     {
1721         // implemented in msw/dir.cpp
1722         extern bool wxGetDirectoryTimes(const wxString& dirname,
1723                                         FILETIME *, FILETIME *, FILETIME *);
1724
1725         // we should pass the path without the trailing separator to
1726         // wxGetDirectoryTimes()
1727         ok = wxGetDirectoryTimes(GetPath(wxPATH_GET_VOLUME),
1728                                  &ftAccess, &ftCreate, &ftWrite);
1729     }
1730     else // file
1731     {
1732         wxFileHandle fh(GetFullPath(), wxFileHandle::Read);
1733         if ( fh.IsOk() )
1734         {
1735             ok = ::GetFileTime(fh,
1736                                dtCreate ? &ftCreate : NULL,
1737                                dtAccess ? &ftAccess : NULL,
1738                                dtMod ? &ftWrite : NULL) != 0;
1739         }
1740         else
1741         {
1742             ok = FALSE;
1743         }
1744     }
1745
1746     if ( ok )
1747     {
1748         if ( dtCreate )
1749             ConvertFileTimeToWx(dtCreate, ftCreate);
1750         if ( dtAccess )
1751             ConvertFileTimeToWx(dtAccess, ftAccess);
1752         if ( dtMod )
1753             ConvertFileTimeToWx(dtMod, ftWrite);
1754
1755         return TRUE;
1756     }
1757 #elif defined(__UNIX_LIKE__) || defined(__WXMAC__) || (defined(__DOS__) && defined(__WATCOMC__))
1758     wxStructStat stBuf;
1759     if ( wxStat( GetFullPath().c_str(), &stBuf) == 0 )
1760     {
1761         if ( dtAccess )
1762             dtAccess->Set(stBuf.st_atime);
1763         if ( dtMod )
1764             dtMod->Set(stBuf.st_mtime);
1765         if ( dtCreate )
1766             dtCreate->Set(stBuf.st_ctime);
1767
1768         return TRUE;
1769     }
1770 #else // other platform
1771 #endif // platforms
1772
1773     wxLogSysError(_("Failed to retrieve file times for '%s'"),
1774                   GetFullPath().c_str());
1775
1776     return FALSE;
1777 }
1778
1779 #endif // wxUSE_DATETIME
1780
1781 #ifdef __WXMAC__
1782
1783 const short kMacExtensionMaxLength = 16 ;
1784 class MacDefaultExtensionRecord
1785 {
1786 public :
1787   MacDefaultExtensionRecord()
1788   {
1789     m_ext[0] = 0 ;
1790     m_type = m_creator = NULL ;
1791   }
1792   MacDefaultExtensionRecord( const MacDefaultExtensionRecord& from )
1793   {
1794     wxStrcpy( m_ext , from.m_ext ) ;
1795     m_type = from.m_type ;
1796     m_creator = from.m_creator ;
1797   }
1798   MacDefaultExtensionRecord( const wxChar * extension , OSType type , OSType creator )
1799   {
1800     wxStrncpy( m_ext , extension , kMacExtensionMaxLength ) ;
1801     m_ext[kMacExtensionMaxLength] = 0 ;
1802     m_type = type ;
1803     m_creator = creator ;
1804   }
1805   wxChar m_ext[kMacExtensionMaxLength] ;
1806   OSType m_type ;
1807   OSType m_creator ;
1808 }  ;
1809
1810 #include "wx/dynarray.h"
1811 WX_DECLARE_OBJARRAY(MacDefaultExtensionRecord, MacDefaultExtensionArray) ;
1812
1813 bool gMacDefaultExtensionsInited = false ;
1814
1815 #include "wx/arrimpl.cpp"
1816
1817 WX_DEFINE_EXPORTED_OBJARRAY(MacDefaultExtensionArray) ;
1818
1819 MacDefaultExtensionArray gMacDefaultExtensions ;
1820
1821 static void MacEnsureDefaultExtensionsLoaded()
1822 {
1823   if ( !gMacDefaultExtensionsInited )
1824   {
1825
1826     // load the default extensions
1827     MacDefaultExtensionRecord defaults[1] =
1828     {
1829       MacDefaultExtensionRecord( wxT("txt") , 'TEXT' , 'ttxt' ) ,
1830
1831     } ;
1832     // we could load the pc exchange prefs here too
1833
1834     for ( size_t i = 0 ; i < WXSIZEOF( defaults ) ; ++i )
1835     {
1836       gMacDefaultExtensions.Add( defaults[i] ) ;
1837     }
1838     gMacDefaultExtensionsInited = true ;
1839   }
1840 }
1841 bool wxFileName::MacSetTypeAndCreator( wxUint32 type , wxUint32 creator )
1842 {
1843   FInfo fndrInfo ;
1844   FSSpec spec ;
1845   wxMacFilename2FSSpec(GetFullPath(),&spec) ;
1846   OSErr err = FSpGetFInfo( &spec , &fndrInfo ) ;
1847   wxCHECK( err == noErr , false ) ;
1848
1849   fndrInfo.fdType = type ;
1850   fndrInfo.fdCreator = creator ;
1851   FSpSetFInfo( &spec , &fndrInfo ) ;
1852   return true ;
1853 }
1854
1855 bool wxFileName::MacGetTypeAndCreator( wxUint32 *type , wxUint32 *creator )
1856 {
1857   FInfo fndrInfo ;
1858   FSSpec spec ;
1859   wxMacFilename2FSSpec(GetFullPath(),&spec) ;
1860   OSErr err = FSpGetFInfo( &spec , &fndrInfo ) ;
1861   wxCHECK( err == noErr , false ) ;
1862
1863   *type = fndrInfo.fdType ;
1864   *creator = fndrInfo.fdCreator ;
1865   return true ;
1866 }
1867
1868 bool wxFileName::MacSetDefaultTypeAndCreator()
1869 {
1870     wxUint32 type , creator ;
1871     if ( wxFileName::MacFindDefaultTypeAndCreator(GetExt() , &type ,
1872       &creator ) )
1873     {
1874         return MacSetTypeAndCreator( type , creator ) ;
1875     }
1876     return false;
1877 }
1878
1879 bool wxFileName::MacFindDefaultTypeAndCreator( const wxString& ext , wxUint32 *type , wxUint32 *creator )
1880 {
1881   MacEnsureDefaultExtensionsLoaded() ;
1882   wxString extl = ext.Lower() ;
1883   for( int i = gMacDefaultExtensions.Count() - 1 ; i >= 0 ; --i )
1884   {
1885     if ( gMacDefaultExtensions.Item(i).m_ext == extl )
1886     {
1887       *type = gMacDefaultExtensions.Item(i).m_type ;
1888       *creator = gMacDefaultExtensions.Item(i).m_creator ;
1889       return true ;
1890     }
1891   }
1892   return false ;
1893 }
1894
1895 void wxFileName::MacRegisterDefaultTypeAndCreator( const wxString& ext , wxUint32 type , wxUint32 creator )
1896 {
1897   MacEnsureDefaultExtensionsLoaded() ;
1898   MacDefaultExtensionRecord rec ;
1899   rec.m_type = type ;
1900   rec.m_creator = creator ;
1901   wxStrncpy( rec.m_ext , ext.Lower().c_str() , kMacExtensionMaxLength ) ;
1902   gMacDefaultExtensions.Add( rec ) ;
1903 }
1904 #endif