src/common/filename.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/filename.cpp
   3 // Purpose:     wxFileName - encapsulates a file path
   4 // Author:      Robert Roebling, Vadim Zeitlin
   5 // Modified by:
   6 // Created:     28.12.2000
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2000 Robert Roebling
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 /*
  13    Here are brief descriptions of the filename formats supported by this class:
  14
  15    wxPATH_UNIX: standard Unix format, used under Darwin as well, absolute file
  16                 names have the form:
  17                 /dir1/dir2/.../dirN/filename, "." and ".." stand for the
  18                 current and parent directory respectively, "~" is parsed as the
  19                 user HOME and "~username" as the HOME of that user
  20
  21    wxPATH_DOS:  DOS/Windows format, absolute file names have the form:
  22                 drive:\dir1\dir2\...\dirN\filename.ext where drive is a single
  23                 letter. "." and ".." as for Unix but no "~".
  24
  25                 There are also UNC names of the form \\share\fullpath
  26
  27    wxPATH_MAC:  Mac OS 8/9 and Mac OS X under CodeWarrior 7 format, absolute file
  28                 names have the form
  29                     volume:dir1:...:dirN:filename
  30                 and the relative file names are either
  31                     :dir1:...:dirN:filename
  32                 or just
  33                     filename
  34                 (although :filename works as well).
  35                 Since the volume is just part of the file path, it is not
  36                 treated like a separate entity as it is done under DOS and
  37                 VMS, it is just treated as another dir.
  38
  39    wxPATH_VMS:  VMS native format, absolute file names have the form
  40                     <device>:[dir1.dir2.dir3]file.txt
  41                 or
  42                     <device>:[000000.dir1.dir2.dir3]file.txt
  43
  44                 the <device> is the physical device (i.e. disk). 000000 is the
  45                 root directory on the device which can be omitted.
  46
  47                 Note that VMS uses different separators unlike Unix:
  48                  : always after the device. If the path does not contain : than
  49                    the default (the device of the current directory) is assumed.
  50                  [ start of directory specification
  51                  . separator between directory and subdirectory
  52                  ] between directory and file
  53  */
  54
  55 // ============================================================================
  56 // declarations
  57 // ============================================================================
  58
  59 // ----------------------------------------------------------------------------
  60 // headers
  61 // ----------------------------------------------------------------------------
  62
  63 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  64 #pragma implementation "filename.h"
  65 #endif
  66
  67 // For compilers that support precompilation, includes "wx.h".
  68 #include "wx/wxprec.h"
  69
  70 #ifdef __BORLANDC__
  71 #pragma hdrstop
  72 #endif
  73
  74 #ifndef WX_PRECOMP
  75 #include "wx/intl.h"
  76 #include "wx/log.h"
  77 #include "wx/file.h"
  78 #endif
  79
  80 #include "wx/filename.h"
  81 #include "wx/tokenzr.h"
  82 #include "wx/config.h"          // for wxExpandEnvVars
  83 #include "wx/utils.h"
  84 #include "wx/file.h"
  85 #include "wx/dynlib.h"
  86
  87 // For GetShort/LongPathName
  88 #ifdef __WIN32__
  89 #include "wx/msw/wrapwin.h"
  90 #if defined(__MINGW32__)
  91 #include "wx/msw/gccpriv.h"
  92 #endif
  93 #endif
  94
  95 #ifdef __WXWINCE__
  96 #include "wx/msw/private.h"
  97 #endif
  98
  99 #if defined(__WXMAC__)
 100   #include  "wx/mac/private.h"  // includes mac headers
 101 #endif
 102
 103 // utime() is POSIX so should normally be available on all Unices
 104 #ifdef __UNIX_LIKE__
 105 #include <sys/types.h>
 106 #include <utime.h>
 107 #include <sys/stat.h>
 108 #include <unistd.h>
 109 #endif
 110
 111 #ifdef __DJGPP__
 112 #include <unistd.h>
 113 #endif
 114
 115 #ifdef __MWERKS__
 116 #ifdef __MACH__
 117 #include <sys/types.h>
 118 #include <utime.h>
 119 #include <sys/stat.h>
 120 #include <unistd.h>
 121 #else
 122 #include <stat.h>
 123 #include <unistd.h>
 124 #include <unix.h>
 125 #endif
 126 #endif
 127
 128 #ifdef __WATCOMC__
 129 #include <io.h>
 130 #include <sys/utime.h>
 131 #include <sys/stat.h>
 132 #endif
 133
 134 #ifdef __VISAGECPP__
 135 #ifndef MAX_PATH
 136 #define MAX_PATH 256
 137 #endif
 138 #endif
 139
 140 #ifdef __EMX__
 141 #include <os2.h>
 142 #define MAX_PATH _MAX_PATH
 143 #endif
 144
 145 // ----------------------------------------------------------------------------
 146 // private classes
 147 // ----------------------------------------------------------------------------
 148
 149 // small helper class which opens and closes the file - we use it just to get
 150 // a file handle for the given file name to pass it to some Win32 API function
 151 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
 152
 153 class wxFileHandle
 154 {
 155 public:
 156     enum OpenMode
 157     {
 158         Read,
 159         Write
 160     };
 161
 162     wxFileHandle(const wxString& filename, OpenMode mode)
 163     {
 164         m_hFile = ::CreateFile
 165                     (
 166                      filename,                      // name
 167                      mode == Read ? GENERIC_READ    // access mask
 168                                   : GENERIC_WRITE,
 169                      FILE_SHARE_READ |              // sharing mode
 170                      FILE_SHARE_WRITE,              // (allow everything)
 171                      NULL,                          // no secutity attr
 172                      OPEN_EXISTING,                 // creation disposition
 173                      0,                             // no flags
 174                      NULL                           // no template file
 175                     );
 176
 177         if ( m_hFile == INVALID_HANDLE_VALUE )
 178         {
 179             wxLogSysError(_("Failed to open '%s' for %s"),
 180                           filename.c_str(),
 181                           mode == Read ? _("reading") : _("writing"));
 182         }
 183     }
 184
 185     ~wxFileHandle()
 186     {
 187         if ( m_hFile != INVALID_HANDLE_VALUE )
 188         {
 189             if ( !::CloseHandle(m_hFile) )
 190             {
 191                 wxLogSysError(_("Failed to close file handle"));
 192             }
 193         }
 194     }
 195
 196     // return true only if the file could be opened successfully
 197     bool IsOk() const { return m_hFile != INVALID_HANDLE_VALUE; }
 198
 199     // get the handle
 200     operator HANDLE() const { return m_hFile; }
 201
 202 private:
 203     HANDLE m_hFile;
 204 };
 205
 206 #endif // __WIN32__
 207
 208 // ----------------------------------------------------------------------------
 209 // private functions
 210 // ----------------------------------------------------------------------------
 211
 212 #if wxUSE_DATETIME && defined(__WIN32__) && !defined(__WXMICROWIN__)
 213
 214 // convert between wxDateTime and FILETIME which is a 64-bit value representing
 215 // the number of 100-nanosecond intervals since January 1, 1601.
 216
 217 static void ConvertFileTimeToWx(wxDateTime *dt, const FILETIME &ft)
 218 {
 219     FILETIME ftcopy = ft;
 220     FILETIME ftLocal;
 221     if ( !::FileTimeToLocalFileTime(&ftcopy, &ftLocal) )
 222     {
 223         wxLogLastError(_T("FileTimeToLocalFileTime"));
 224     }
 225
 226     SYSTEMTIME st;
 227     if ( !::FileTimeToSystemTime(&ftLocal, &st) )
 228     {
 229         wxLogLastError(_T("FileTimeToSystemTime"));
 230     }
 231
 232     dt->Set(st.wDay, wxDateTime::Month(st.wMonth - 1), st.wYear,
 233             st.wHour, st.wMinute, st.wSecond, st.wMilliseconds);
 234 }
 235
 236 static void ConvertWxToFileTime(FILETIME *ft, const wxDateTime& dt)
 237 {
 238     SYSTEMTIME st;
 239     st.wDay = dt.GetDay();
 240     st.wMonth = (WORD)(dt.GetMonth() + 1);
 241     st.wYear = (WORD)dt.GetYear();
 242     st.wHour = dt.GetHour();
 243     st.wMinute = dt.GetMinute();
 244     st.wSecond = dt.GetSecond();
 245     st.wMilliseconds = dt.GetMillisecond();
 246
 247     FILETIME ftLocal;
 248     if ( !::SystemTimeToFileTime(&st, &ftLocal) )
 249     {
 250         wxLogLastError(_T("SystemTimeToFileTime"));
 251     }
 252
 253     if ( !::LocalFileTimeToFileTime(&ftLocal, ft) )
 254     {
 255         wxLogLastError(_T("LocalFileTimeToFileTime"));
 256     }
 257 }
 258
 259 #endif // wxUSE_DATETIME && __WIN32__
 260
 261 // return a string with the volume par
 262 static wxString wxGetVolumeString(const wxString& volume, wxPathFormat format)
 263 {
 264     wxString path;
 265
 266     if ( !volume.empty() )
 267     {
 268         format = wxFileName::GetFormat(format);
 269
 270         // Special Windows UNC paths hack, part 2: undo what we did in
 271         // SplitPath() and make an UNC path if we have a drive which is not a
 272         // single letter (hopefully the network shares can't be one letter only
 273         // although I didn't find any authoritative docs on this)
 274         if ( format == wxPATH_DOS && volume.length() > 1 )
 275         {
 276             path << wxFILE_SEP_PATH_DOS << wxFILE_SEP_PATH_DOS << volume;
 277         }
 278         else if  ( format == wxPATH_DOS || format == wxPATH_VMS )
 279         {
 280             path << volume << wxFileName::GetVolumeSeparator(format);
 281         }
 282         // else ignore
 283     }
 284
 285     return path;
 286 }
 287
 288 // ============================================================================
 289 // implementation
 290 // ============================================================================
 291
 292 // ----------------------------------------------------------------------------
 293 // wxFileName construction
 294 // ----------------------------------------------------------------------------
 295
 296 void wxFileName::Assign( const wxFileName &filepath )
 297 {
 298     m_volume = filepath.GetVolume();
 299     m_dirs = filepath.GetDirs();
 300     m_name = filepath.GetName();
 301     m_ext = filepath.GetExt();
 302     m_relative = filepath.m_relative;
 303 }
 304
 305 void wxFileName::Assign(const wxString& volume,
 306                         const wxString& path,
 307                         const wxString& name,
 308                         const wxString& ext,
 309                         wxPathFormat format )
 310 {
 311     SetPath( path, format );
 312
 313     m_volume = volume;
 314     m_ext = ext;
 315     m_name = name;
 316 }
 317
 318 void wxFileName::SetPath( const wxString& pathOrig, wxPathFormat format )
 319 {
 320     m_dirs.Clear();
 321
 322     if ( pathOrig.empty() )
 323     {
 324         // no path at all
 325         m_relative = true;
 326
 327         return;
 328     }
 329
 330     format = GetFormat( format );
 331
 332     // 0) deal with possible volume part first
 333     wxString volume,
 334              path;
 335     SplitVolume(pathOrig, &volume, &path, format);
 336     if ( !volume.empty() )
 337     {
 338         m_relative = false;
 339
 340         SetVolume(volume);
 341     }
 342
 343     // 1) Determine if the path is relative or absolute.
 344     wxChar leadingChar = path[0u];
 345
 346     switch (format)
 347     {
 348         case wxPATH_MAC:
 349             m_relative = leadingChar == wxT(':');
 350
 351             // We then remove a leading ":". The reason is in our
 352             // storage form for relative paths:
 353             // ":dir:file.txt" actually means "./dir/file.txt" in
 354             // DOS notation and should get stored as
 355             // (relative) (dir) (file.txt)
 356             // "::dir:file.txt" actually means "../dir/file.txt"
 357             // stored as (relative) (..) (dir) (file.txt)
 358             // This is important only for the Mac as an empty dir
 359             // actually means <UP>, whereas under DOS, double
 360             // slashes can be ignored: "\\\\" is the same as "\\".
 361             if (m_relative)
 362                 path.erase( 0, 1 );
 363             break;
 364
 365         case wxPATH_VMS:
 366             // TODO: what is the relative path format here?
 367             m_relative = false;
 368             break;
 369
 370         default:
 371             wxFAIL_MSG( _T("Unknown path format") );
 372             // !! Fall through !!
 373
 374         case wxPATH_UNIX:
 375             // the paths of the form "~" or "~username" are absolute
 376             m_relative = leadingChar != wxT('/') && leadingChar != _T('~');
 377             break;
 378
 379         case wxPATH_DOS:
 380             m_relative = !IsPathSeparator(leadingChar, format);
 381             break;
 382
 383     }
 384
 385     // 2) Break up the path into its members. If the original path
 386     //    was just "/" or "\\", m_dirs will be empty. We know from
 387     //    the m_relative field, if this means "nothing" or "root dir".
 388
 389     wxStringTokenizer tn( path, GetPathSeparators(format) );
 390
 391     while ( tn.HasMoreTokens() )
 392     {
 393         wxString token = tn.GetNextToken();
 394
 395         // Remove empty token under DOS and Unix, interpret them
 396         // as .. under Mac.
 397         if (token.empty())
 398         {
 399             if (format == wxPATH_MAC)
 400                 m_dirs.Add( wxT("..") );
 401             // else ignore
 402         }
 403         else
 404         {
 405            m_dirs.Add( token );
 406         }
 407     }
 408 }
 409
 410 void wxFileName::Assign(const wxString& fullpath,
 411                         wxPathFormat format)
 412 {
 413     wxString volume, path, name, ext;
 414     SplitPath(fullpath, &volume, &path, &name, &ext, format);
 415
 416     Assign(volume, path, name, ext, format);
 417 }
 418
 419 void wxFileName::Assign(const wxString& fullpathOrig,
 420                         const wxString& fullname,
 421                         wxPathFormat format)
 422 {
 423     // always recognize fullpath as directory, even if it doesn't end with a
 424     // slash
 425     wxString fullpath = fullpathOrig;
 426     if ( !wxEndsWithPathSeparator(fullpath) )
 427     {
 428         fullpath += GetPathSeparator(format);
 429     }
 430
 431     wxString volume, path, name, ext;
 432
 433     // do some consistency checks in debug mode: the name should be really just
 434     // the filename and the path should be really just a path
 435 #ifdef __WXDEBUG__
 436     wxString pathDummy, nameDummy, extDummy;
 437
 438     SplitPath(fullname, &pathDummy, &name, &ext, format);
 439
 440     wxASSERT_MSG( pathDummy.empty(),
 441                   _T("the file name shouldn't contain the path") );
 442
 443     SplitPath(fullpath, &volume, &path, &nameDummy, &extDummy, format);
 444
 445     wxASSERT_MSG( nameDummy.empty() && extDummy.empty(),
 446                   _T("the path shouldn't contain file name nor extension") );
 447
 448 #else // !__WXDEBUG__
 449     SplitPath(fullname, NULL /* no path */, &name, &ext, format);
 450     SplitPath(fullpath, &volume, &path, NULL, NULL, format);
 451 #endif // __WXDEBUG__/!__WXDEBUG__
 452
 453     Assign(volume, path, name, ext, format);
 454 }
 455
 456 void wxFileName::AssignDir(const wxString& dir, wxPathFormat format)
 457 {
 458     Assign(dir, _T(""), format);
 459 }
 460
 461 void wxFileName::Clear()
 462 {
 463     m_dirs.Clear();
 464
 465     m_volume =
 466     m_name =
 467     m_ext = wxEmptyString;
 468
 469     // we don't have any absolute path for now
 470     m_relative = true;
 471 }
 472
 473 /* static */
 474 wxFileName wxFileName::FileName(const wxString& file, wxPathFormat format)
 475 {
 476     return wxFileName(file, format);
 477 }
 478
 479 /* static */
 480 wxFileName wxFileName::DirName(const wxString& dir, wxPathFormat format)
 481 {
 482     wxFileName fn;
 483     fn.AssignDir(dir, format);
 484     return fn;
 485 }
 486
 487 // ----------------------------------------------------------------------------
 488 // existence tests
 489 // ----------------------------------------------------------------------------
 490
 491 bool wxFileName::FileExists() const
 492 {
 493     return wxFileName::FileExists( GetFullPath() );
 494 }
 495
 496 bool wxFileName::FileExists( const wxString &file )
 497 {
 498     return ::wxFileExists( file );
 499 }
 500
 501 bool wxFileName::DirExists() const
 502 {
 503     return wxFileName::DirExists( GetFullPath() );
 504 }
 505
 506 bool wxFileName::DirExists( const wxString &dir )
 507 {
 508     return ::wxDirExists( dir );
 509 }
 510
 511 // ----------------------------------------------------------------------------
 512 // CWD and HOME stuff
 513 // ----------------------------------------------------------------------------
 514
 515 void wxFileName::AssignCwd(const wxString& volume)
 516 {
 517     AssignDir(wxFileName::GetCwd(volume));
 518 }
 519
 520 /* static */
 521 wxString wxFileName::GetCwd(const wxString& volume)
 522 {
 523     // if we have the volume, we must get the current directory on this drive
 524     // and to do this we have to chdir to this volume - at least under Windows,
 525     // I don't know how to get the current drive on another volume elsewhere
 526     // (TODO)
 527     wxString cwdOld;
 528     if ( !volume.empty() )
 529     {
 530         cwdOld = wxGetCwd();
 531         SetCwd(volume + GetVolumeSeparator());
 532     }
 533
 534     wxString cwd = ::wxGetCwd();
 535
 536     if ( !volume.empty() )
 537     {
 538         SetCwd(cwdOld);
 539     }
 540
 541     return cwd;
 542 }
 543
 544 bool wxFileName::SetCwd()
 545 {
 546     return wxFileName::SetCwd( GetFullPath() );
 547 }
 548
 549 bool wxFileName::SetCwd( const wxString &cwd )
 550 {
 551     return ::wxSetWorkingDirectory( cwd );
 552 }
 553
 554 void wxFileName::AssignHomeDir()
 555 {
 556     AssignDir(wxFileName::GetHomeDir());
 557 }
 558
 559 wxString wxFileName::GetHomeDir()
 560 {
 561     return ::wxGetHomeDir();
 562 }
 563
 564 void wxFileName::AssignTempFileName(const wxString& prefix, wxFile *fileTemp)
 565 {
 566     wxString tempname = CreateTempFileName(prefix, fileTemp);
 567     if ( tempname.empty() )
 568     {
 569         // error, failed to get temp file name
 570         Clear();
 571     }
 572     else // ok
 573     {
 574         Assign(tempname);
 575     }
 576 }
 577
 578 /* static */
 579 wxString
 580 wxFileName::CreateTempFileName(const wxString& prefix, wxFile *fileTemp)
 581 {
 582     wxString path, dir, name;
 583
 584     // use the directory specified by the prefix
 585     SplitPath(prefix, &dir, &name, NULL /* extension */);
 586
 587 #if defined(__WXWINCE__)
 588     if (dir.empty())
 589     {
 590         // FIXME. Create \temp dir?
 591         dir = wxT("\\");
 592     }
 593     path = dir + wxT("\\") + prefix;
 594     int i = 1;
 595     while (wxFileExists(path))
 596     {
 597         path = dir + wxT("\\") + prefix ;
 598         path << i;
 599         i ++;
 600     }
 601
 602 #elif defined(__WINDOWS__) && !defined(__WXMICROWIN__)
 603
 604     if ( dir.empty() )
 605     {
 606         if ( !::GetTempPath(MAX_PATH, wxStringBuffer(dir, MAX_PATH + 1)) )
 607         {
 608             wxLogLastError(_T("GetTempPath"));
 609         }
 610
 611         if ( dir.empty() )
 612         {
 613             // GetTempFileName() fails if we pass it an empty string
 614             dir = _T('.');
 615         }
 616     }
 617     else // we have a dir to create the file in
 618     {
 619         // ensure we use only the back slashes as GetTempFileName(), unlike all
 620         // the other APIs, is picky and doesn't accept the forward ones
 621         dir.Replace(_T("/"), _T("\\"));
 622     }
 623
 624     if ( !::GetTempFileName(dir, name, 0, wxStringBuffer(path, MAX_PATH + 1)) )
 625     {
 626         wxLogLastError(_T("GetTempFileName"));
 627
 628         path.clear();
 629     }
 630
 631 #else // !Windows
 632     if ( dir.empty() )
 633     {
 634 #if defined(__WXMAC__) && !defined(__DARWIN__)
 635         dir = wxMacFindFolder(  (short) kOnSystemDisk, kTemporaryFolderType, kCreateFolder ) ;
 636 #else // !Mac
 637         dir = wxGetenv(_T("TMP"));
 638         if ( dir.empty() )
 639         {
 640             dir = wxGetenv(_T("TEMP"));
 641         }
 642
 643         if ( dir.empty() )
 644         {
 645             // default
 646             #if defined(__DOS__) || defined(__OS2__)
 647                 dir = _T(".");
 648             #else
 649                 dir = _T("/tmp");
 650             #endif
 651         }
 652 #endif // Mac/!Mac
 653     }
 654
 655     path = dir;
 656
 657     if ( !wxEndsWithPathSeparator(dir) &&
 658             (name.empty() || !wxIsPathSeparator(name[0u])) )
 659     {
 660         path += wxFILE_SEP_PATH;
 661     }
 662
 663     path += name;
 664
 665 #if defined(HAVE_MKSTEMP)
 666     // scratch space for mkstemp()
 667     path += _T("XXXXXX");
 668
 669     // we need to copy the path to the buffer in which mkstemp() can modify it
 670     wxCharBuffer buf( wxConvFile.cWX2MB( path ) );
 671
 672     // cast is safe because the string length doesn't change
 673     int fdTemp = mkstemp( (char*)(const char*) buf );
 674     if ( fdTemp == -1 )
 675     {
 676         // this might be not necessary as mkstemp() on most systems should have
 677         // already done it but it doesn't hurt neither...
 678         path.clear();
 679     }
 680     else // mkstemp() succeeded
 681     {
 682         path = wxConvFile.cMB2WX( (const char*) buf );
 683
 684         // avoid leaking the fd
 685         if ( fileTemp )
 686         {
 687             fileTemp->Attach(fdTemp);
 688         }
 689         else
 690         {
 691             close(fdTemp);
 692         }
 693     }
 694 #else // !HAVE_MKSTEMP
 695
 696 #ifdef HAVE_MKTEMP
 697     // same as above
 698     path += _T("XXXXXX");
 699
 700     wxCharBuffer buf = wxConvFile.cWX2MB( path );
 701     if ( !mktemp( (const char*) buf ) )
 702     {
 703         path.clear();
 704     }
 705     else
 706     {
 707         path = wxConvFile.cMB2WX( (const char*) buf );
 708     }
 709 #else // !HAVE_MKTEMP (includes __DOS__)
 710     // generate the unique file name ourselves
 711     #if !defined(__DOS__) && (!defined(__MWERKS__) || defined(__DARWIN__) )
 712     path << (unsigned int)getpid();
 713     #endif
 714
 715     wxString pathTry;
 716
 717     static const size_t numTries = 1000;
 718     for ( size_t n = 0; n < numTries; n++ )
 719     {
 720         // 3 hex digits is enough for numTries == 1000 < 4096
 721         pathTry = path + wxString::Format(_T("%.03x"), (unsigned int) n);
 722         if ( !wxFile::Exists(pathTry) )
 723         {
 724             break;
 725         }
 726
 727         pathTry.clear();
 728     }
 729
 730     path = pathTry;
 731 #endif // HAVE_MKTEMP/!HAVE_MKTEMP
 732
 733     if ( !path.empty() )
 734     {
 735     }
 736 #endif // HAVE_MKSTEMP/!HAVE_MKSTEMP
 737
 738 #endif // Windows/!Windows
 739
 740     if ( path.empty() )
 741     {
 742         wxLogSysError(_("Failed to create a temporary file name"));
 743     }
 744     else if ( fileTemp && !fileTemp->IsOpened() )
 745     {
 746         // open the file - of course, there is a race condition here, this is
 747         // why we always prefer using mkstemp()...
 748         //
 749         // NB: GetTempFileName() under Windows creates the file, so using
 750         //     write_excl there would fail
 751         if ( !fileTemp->Open(path,
 752 #if defined(__WINDOWS__) && !defined(__WXMICROWIN__)
 753                              wxFile::write,
 754 #else
 755                              wxFile::write_excl,
 756 #endif
 757                              wxS_IRUSR | wxS_IWUSR) )
 758         {
 759             // FIXME: If !ok here should we loop and try again with another
 760             //        file name?  That is the standard recourse if open(O_EXCL)
 761             //        fails, though of course it should be protected against
 762             //        possible infinite looping too.
 763
 764             wxLogError(_("Failed to open temporary file."));
 765
 766             path.clear();
 767         }
 768     }
 769
 770     return path;
 771 }
 772
 773 // ----------------------------------------------------------------------------
 774 // directory operations
 775 // ----------------------------------------------------------------------------
 776
 777 bool wxFileName::Mkdir( int perm, int flags )
 778 {
 779     return wxFileName::Mkdir( GetFullPath(), perm, flags );
 780 }
 781
 782 bool wxFileName::Mkdir( const wxString& dir, int perm, int flags )
 783 {
 784     if ( flags & wxPATH_MKDIR_FULL )
 785     {
 786         // split the path in components
 787         wxFileName filename;
 788         filename.AssignDir(dir);
 789
 790         wxString currPath;
 791         if ( filename.HasVolume())
 792         {
 793             currPath << wxGetVolumeString(filename.GetVolume(), wxPATH_NATIVE);
 794         }
 795
 796         wxArrayString dirs = filename.GetDirs();
 797         size_t count = dirs.GetCount();
 798         for ( size_t i = 0; i < count; i++ )
 799         {
 800             if ( i > 0 ||
 801 #if defined(__WXMAC__) && !defined(__DARWIN__)
 802             // relative pathnames are exactely the other way round under mac...
 803                 !filename.IsAbsolute()
 804 #else
 805                 filename.IsAbsolute()
 806 #endif
 807             )
 808                 currPath += wxFILE_SEP_PATH;
 809             currPath += dirs[i];
 810
 811             if (!DirExists(currPath))
 812             {
 813                 if (!wxMkdir(currPath, perm))
 814                 {
 815                     // no need to try creating further directories
 816                     return false;
 817                 }
 818             }
 819         }
 820
 821         return true;
 822
 823     }
 824
 825     return ::wxMkdir( dir, perm );
 826 }
 827
 828 bool wxFileName::Rmdir()
 829 {
 830     return wxFileName::Rmdir( GetFullPath() );
 831 }
 832
 833 bool wxFileName::Rmdir( const wxString &dir )
 834 {
 835     return ::wxRmdir( dir );
 836 }
 837
 838 // ----------------------------------------------------------------------------
 839 // path normalization
 840 // ----------------------------------------------------------------------------
 841
 842 bool wxFileName::Normalize(int flags,
 843                            const wxString& cwd,
 844                            wxPathFormat format)
 845 {
 846     // deal with env vars renaming first as this may seriously change the path
 847     if ( flags & wxPATH_NORM_ENV_VARS )
 848     {
 849         wxString pathOrig = GetFullPath(format);
 850         wxString path = wxExpandEnvVars(pathOrig);
 851         if ( path != pathOrig )
 852         {
 853             Assign(path);
 854         }
 855     }
 856
 857
 858     // the existing path components
 859     wxArrayString dirs = GetDirs();
 860
 861     // the path to prepend in front to make the path absolute
 862     wxFileName curDir;
 863
 864     format = GetFormat(format);
 865
 866     // make the path absolute
 867     if ( (flags & wxPATH_NORM_ABSOLUTE) && !IsAbsolute(format) )
 868     {
 869         if ( cwd.empty() )
 870         {
 871             curDir.AssignCwd(GetVolume());
 872         }
 873         else // cwd provided
 874         {
 875             curDir.AssignDir(cwd);
 876         }
 877
 878         // the path may be not absolute because it doesn't have the volume name
 879         // but in this case we shouldn't modify the directory components of it
 880         // but just set the current volume
 881         if ( !HasVolume() && curDir.HasVolume() )
 882         {
 883             SetVolume(curDir.GetVolume());
 884
 885             if ( !m_relative )
 886             {
 887                 // yes, it was the case - we don't need curDir then
 888                 curDir.Clear();
 889             }
 890         }
 891     }
 892
 893     // handle ~ stuff under Unix only
 894     if ( (format == wxPATH_UNIX) && (flags & wxPATH_NORM_TILDE) )
 895     {
 896         if ( !dirs.IsEmpty() )
 897         {
 898             wxString dir = dirs[0u];
 899             if ( !dir.empty() && dir[0u] == _T('~') )
 900             {
 901                 curDir.AssignDir(wxGetUserHome(dir.c_str() + 1));
 902
 903                 dirs.RemoveAt(0u);
 904             }
 905         }
 906     }
 907
 908     // transform relative path into abs one
 909     if ( curDir.IsOk() )
 910     {
 911         wxArrayString dirsNew = curDir.GetDirs();
 912         size_t count = dirs.GetCount();
 913         for ( size_t n = 0; n < count; n++ )
 914         {
 915             dirsNew.Add(dirs[n]);
 916         }
 917
 918         dirs = dirsNew;
 919     }
 920
 921     // now deal with ".", ".." and the rest
 922     m_dirs.Empty();
 923     size_t count = dirs.GetCount();
 924     for ( size_t n = 0; n < count; n++ )
 925     {
 926         wxString dir = dirs[n];
 927
 928         if ( flags & wxPATH_NORM_DOTS )
 929         {
 930             if ( dir == wxT(".") )
 931             {
 932                 // just ignore
 933                 continue;
 934             }
 935
 936             if ( dir == wxT("..") )
 937             {
 938                 if ( m_dirs.IsEmpty() )
 939                 {
 940                     wxLogError(_("The path '%s' contains too many \"..\"!"),
 941                                GetFullPath().c_str());
 942                     return false;
 943                 }
 944
 945                 m_dirs.RemoveAt(m_dirs.GetCount() - 1);
 946                 continue;
 947             }
 948         }
 949
 950         if ( (flags & wxPATH_NORM_CASE) && !IsCaseSensitive(format) )
 951         {
 952             dir.MakeLower();
 953         }
 954
 955         m_dirs.Add(dir);
 956     }
 957
 958 #if defined(__WIN32__) && !defined(__WXWINCE__) && wxUSE_OLE
 959     if ( (flags & wxPATH_NORM_SHORTCUT) )
 960     {
 961         wxString filename;
 962         if (GetShortcutTarget(GetFullPath(format), filename))
 963         {
 964             // Repeat this since we may now have a new path
 965             if ( (flags & wxPATH_NORM_CASE) && !IsCaseSensitive(format) )
 966             {
 967                 filename.MakeLower();
 968             }
 969             m_relative = false;
 970             Assign(filename);
 971         }
 972     }
 973 #endif
 974
 975     if ( (flags & wxPATH_NORM_CASE) && !IsCaseSensitive(format) )
 976     {
 977         // VZ: expand env vars here too?
 978
 979         m_volume.MakeLower();
 980         m_name.MakeLower();
 981         m_ext.MakeLower();
 982     }
 983
 984     // we do have the path now
 985     //
 986     // NB: need to do this before (maybe) calling Assign() below
 987     m_relative = false;
 988
 989 #if defined(__WIN32__)
 990     if ( (flags & wxPATH_NORM_LONG) && (format == wxPATH_DOS) )
 991     {
 992         Assign(GetLongPath());
 993     }
 994 #endif // Win32
 995
 996     return true;
 997 }
 998
 999 // ----------------------------------------------------------------------------
1000 // get the shortcut target
1001 // ----------------------------------------------------------------------------
1002
1003 // WinCE (3) doesn't have CLSID_ShellLink, IID_IShellLink definitions.
1004 // The .lnk file is a plain text file so it should be easy to
1005 // make it work. Hint from Google Groups:
1006 // "If you open up a lnk file, you'll see a
1007 // number, followed by a pound sign (#), followed by more text. The
1008 // number is the number of characters that follows the pound sign. The
1009 // characters after the pound sign are the command line (which _can_
1010 // include arguments) to be executed. Any path (e.g. \windows\program
1011 // files\myapp.exe) that includes spaces needs to be enclosed in
1012 // quotation marks."
1013
1014 #if defined(__WIN32__) && !defined(__WXWINCE__) && wxUSE_OLE
1015 // The following lines are necessary under WinCE
1016 // #include "wx/msw/private.h"
1017 // #include <ole2.h>
1018 #include <shlobj.h>
1019 #if defined(__WXWINCE__)
1020 #include <shlguid.h>
1021 #endif
1022
1023 bool wxFileName::GetShortcutTarget(const wxString& shortcutPath, wxString& targetFilename, wxString* arguments)
1024 {
1025     wxString path, file, ext;
1026     wxSplitPath(shortcutPath, & path, & file, & ext);
1027
1028     HRESULT hres;
1029     IShellLink* psl;
1030     bool success = false;
1031
1032     // Assume it's not a shortcut if it doesn't end with lnk
1033     if (ext.Lower() != wxT("lnk"))
1034         return false;
1035
1036     // create a ShellLink object
1037     hres = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER,
1038                             IID_IShellLink, (LPVOID*) &psl);
1039
1040     if (SUCCEEDED(hres))
1041     {
1042         IPersistFile* ppf;
1043         hres = psl->QueryInterface( IID_IPersistFile, (LPVOID *) &ppf);
1044         if (SUCCEEDED(hres))
1045         {
1046             WCHAR wsz[MAX_PATH];
1047
1048             MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, shortcutPath.mb_str(), -1, wsz,
1049                                 MAX_PATH);
1050
1051             hres = ppf->Load(wsz, 0);
1052             if (SUCCEEDED(hres))
1053             {
1054                 wxChar buf[2048];
1055                 // Wrong prototype in early versions
1056 #if defined(__MINGW32__) && !wxCHECK_W32API_VERSION(2, 2)
1057                 psl->GetPath((CHAR*) buf, 2048, NULL, SLGP_UNCPRIORITY);
1058 #else
1059                 psl->GetPath(buf, 2048, NULL, SLGP_UNCPRIORITY);
1060 #endif
1061                 targetFilename = wxString(buf);
1062                 success = (shortcutPath != targetFilename);
1063
1064                 psl->GetArguments(buf, 2048);
1065                 wxString args(buf);
1066                 if (!args.IsEmpty() && arguments)
1067                 {
1068                     *arguments = args;
1069                 }
1070             }
1071         }
1072     }
1073     psl->Release();
1074     return success;
1075 }
1076 #endif
1077
1078
1079 // ----------------------------------------------------------------------------
1080 // absolute/relative paths
1081 // ----------------------------------------------------------------------------
1082
1083 bool wxFileName::IsAbsolute(wxPathFormat format) const
1084 {
1085     // if our path doesn't start with a path separator, it's not an absolute
1086     // path
1087     if ( m_relative )
1088         return false;
1089
1090     if ( !GetVolumeSeparator(format).empty() )
1091     {
1092         // this format has volumes and an absolute path must have one, it's not
1093         // enough to have the full path to bean absolute file under Windows
1094         if ( GetVolume().empty() )
1095             return false;
1096     }
1097
1098     return true;
1099 }
1100
1101 bool wxFileName::MakeRelativeTo(const wxString& pathBase, wxPathFormat format)
1102 {
1103     wxFileName fnBase = wxFileName::DirName(pathBase, format);
1104
1105     // get cwd only once - small time saving
1106     wxString cwd = wxGetCwd();
1107     Normalize(wxPATH_NORM_ALL & ~wxPATH_NORM_CASE, cwd, format);
1108     fnBase.Normalize(wxPATH_NORM_ALL & ~wxPATH_NORM_CASE, cwd, format);
1109
1110     bool withCase = IsCaseSensitive(format);
1111
1112     // we can't do anything if the files live on different volumes
1113     if ( !GetVolume().IsSameAs(fnBase.GetVolume(), withCase) )
1114     {
1115         // nothing done
1116         return false;
1117     }
1118
1119     // same drive, so we don't need our volume
1120     m_volume.clear();
1121
1122     // remove common directories starting at the top
1123     while ( !m_dirs.IsEmpty() && !fnBase.m_dirs.IsEmpty() &&
1124                 m_dirs[0u].IsSameAs(fnBase.m_dirs[0u], withCase) )
1125     {
1126         m_dirs.RemoveAt(0);
1127         fnBase.m_dirs.RemoveAt(0);
1128     }
1129
1130     // add as many ".." as needed
1131     size_t count = fnBase.m_dirs.GetCount();
1132     for ( size_t i = 0; i < count; i++ )
1133     {
1134         m_dirs.Insert(wxT(".."), 0u);
1135     }
1136
1137     if ( format == wxPATH_UNIX || format == wxPATH_DOS )
1138     {
1139         // a directory made relative with respect to itself is '.' under Unix
1140         // and DOS, by definition (but we don't have to insert "./" for the
1141         // files)
1142         if ( m_dirs.IsEmpty() && IsDir() )
1143         {
1144             m_dirs.Add(_T('.'));
1145         }
1146     }
1147
1148     m_relative = true;
1149
1150     // we were modified
1151     return true;
1152 }
1153
1154 // ----------------------------------------------------------------------------
1155 // filename kind tests
1156 // ----------------------------------------------------------------------------
1157
1158 bool wxFileName::SameAs(const wxFileName& filepath, wxPathFormat format) const
1159 {
1160     wxFileName fn1 = *this,
1161                fn2 = filepath;
1162
1163     // get cwd only once - small time saving
1164     wxString cwd = wxGetCwd();
1165     fn1.Normalize(wxPATH_NORM_ALL | wxPATH_NORM_CASE, cwd, format);
1166     fn2.Normalize(wxPATH_NORM_ALL | wxPATH_NORM_CASE, cwd, format);
1167
1168     if ( fn1.GetFullPath() == fn2.GetFullPath() )
1169         return true;
1170
1171     // TODO: compare inodes for Unix, this works even when filenames are
1172     //       different but files are the same (symlinks) (VZ)
1173
1174     return false;
1175 }
1176
1177 /* static */
1178 bool wxFileName::IsCaseSensitive( wxPathFormat format )
1179 {
1180     // only Unix filenames are truely case-sensitive
1181     return GetFormat(format) == wxPATH_UNIX;
1182 }
1183
1184 /* static */
1185 wxString wxFileName::GetForbiddenChars(wxPathFormat format)
1186 {
1187     // Inits to forbidden characters that are common to (almost) all platforms.
1188     wxString strForbiddenChars = wxT("*?");
1189
1190     // If asserts, wxPathFormat has been changed. In case of a new path format
1191     // addition, the following code might have to be updated.
1192     wxCOMPILE_TIME_ASSERT(wxPATH_MAX == 5, wxPathFormatChanged);
1193     switch ( GetFormat(format) )
1194     {
1195         default :
1196             wxFAIL_MSG( wxT("Unknown path format") );
1197             // !! Fall through !!
1198
1199         case wxPATH_UNIX:
1200             break;
1201
1202         case wxPATH_MAC:
1203             // On a Mac even names with * and ? are allowed (Tested with OS
1204             // 9.2.1 and OS X 10.2.5)
1205             strForbiddenChars = wxEmptyString;
1206             break;
1207
1208         case wxPATH_DOS:
1209             strForbiddenChars += wxT("\\/:\"<>|");
1210             break;
1211
1212         case wxPATH_VMS:
1213             break;
1214     }
1215
1216     return strForbiddenChars;
1217 }
1218
1219 /* static */
1220 wxString wxFileName::GetVolumeSeparator(wxPathFormat format)
1221 {
1222     wxString sepVol;
1223
1224     if ( (GetFormat(format) == wxPATH_DOS) ||
1225          (GetFormat(format) == wxPATH_VMS) )
1226     {
1227         sepVol = wxFILE_SEP_DSK;
1228     }
1229     //else: leave empty
1230
1231     return sepVol;
1232 }
1233
1234 /* static */
1235 wxString wxFileName::GetPathSeparators(wxPathFormat format)
1236 {
1237     wxString seps;
1238     switch ( GetFormat(format) )
1239     {
1240         case wxPATH_DOS:
1241             // accept both as native APIs do but put the native one first as
1242             // this is the one we use in GetFullPath()
1243             seps << wxFILE_SEP_PATH_DOS << wxFILE_SEP_PATH_UNIX;
1244             break;
1245
1246         default:
1247             wxFAIL_MSG( _T("Unknown wxPATH_XXX style") );
1248             // fall through
1249
1250         case wxPATH_UNIX:
1251             seps = wxFILE_SEP_PATH_UNIX;
1252             break;
1253
1254         case wxPATH_MAC:
1255             seps = wxFILE_SEP_PATH_MAC;
1256             break;
1257
1258         case wxPATH_VMS:
1259             seps = wxFILE_SEP_PATH_VMS;
1260             break;
1261     }
1262
1263     return seps;
1264 }
1265
1266 /* static */
1267 wxString wxFileName::GetPathTerminators(wxPathFormat format)
1268 {
1269     format = GetFormat(format);
1270
1271     // under VMS the end of the path is ']', not the path separator used to
1272     // separate the components
1273     return format == wxPATH_VMS ? wxString(_T(']')) : GetPathSeparators(format);
1274 }
1275
1276 /* static */
1277 bool wxFileName::IsPathSeparator(wxChar ch, wxPathFormat format)
1278 {
1279     // wxString::Find() doesn't work as expected with NUL - it will always find
1280     // it, so it is almost surely a bug if this function is called with NUL arg
1281     wxASSERT_MSG( ch != _T('\0'), _T("shouldn't be called with NUL") );
1282
1283     return GetPathSeparators(format).Find(ch) != wxNOT_FOUND;
1284 }
1285
1286 // ----------------------------------------------------------------------------
1287 // path components manipulation
1288 // ----------------------------------------------------------------------------
1289
1290 /* static */ bool wxFileName::IsValidDirComponent(const wxString& dir)
1291 {
1292     if ( dir.empty() )
1293     {
1294         wxFAIL_MSG( _T("empty directory passed to wxFileName::InsertDir()") );
1295
1296         return false;
1297     }
1298
1299     const size_t len = dir.length();
1300     for ( size_t n = 0; n < len; n++ )
1301     {
1302         if ( dir[n] == GetVolumeSeparator() || IsPathSeparator(dir[n]) )
1303         {
1304             wxFAIL_MSG( _T("invalid directory component in wxFileName") );
1305
1306             return false;
1307         }
1308     }
1309
1310     return true;
1311 }
1312
1313 void wxFileName::AppendDir( const wxString &dir )
1314 {
1315     if ( IsValidDirComponent(dir) )
1316         m_dirs.Add( dir );
1317 }
1318
1319 void wxFileName::PrependDir( const wxString &dir )
1320 {
1321     InsertDir(0, dir);
1322 }
1323
1324 void wxFileName::InsertDir( int before, const wxString &dir )
1325 {
1326     if ( IsValidDirComponent(dir) )
1327         m_dirs.Insert( dir, before );
1328 }
1329
1330 void wxFileName::RemoveDir( int pos )
1331 {
1332     m_dirs.RemoveAt( (size_t)pos );
1333 }
1334
1335 // ----------------------------------------------------------------------------
1336 // accessors
1337 // ----------------------------------------------------------------------------
1338
1339 void wxFileName::SetFullName(const wxString& fullname)
1340 {
1341     SplitPath(fullname, NULL /* no path */, &m_name, &m_ext);
1342 }
1343
1344 wxString wxFileName::GetFullName() const
1345 {
1346     wxString fullname = m_name;
1347     if ( !m_ext.empty() )
1348     {
1349         fullname << wxFILE_SEP_EXT << m_ext;
1350     }
1351
1352     return fullname;
1353 }
1354
1355 wxString wxFileName::GetPath( int flags, wxPathFormat format ) const
1356 {
1357     format = GetFormat( format );
1358
1359     wxString fullpath;
1360
1361     // return the volume with the path as well if requested
1362     if ( flags & wxPATH_GET_VOLUME )
1363     {
1364         fullpath += wxGetVolumeString(GetVolume(), format);
1365     }
1366
1367     // the leading character
1368     switch ( format )
1369     {
1370         case wxPATH_MAC:
1371             if ( m_relative )
1372                 fullpath += wxFILE_SEP_PATH_MAC;
1373             break;
1374
1375         case wxPATH_DOS:
1376             if ( !m_relative )
1377                 fullpath += wxFILE_SEP_PATH_DOS;
1378             break;
1379
1380         default:
1381             wxFAIL_MSG( wxT("Unknown path format") );
1382             // fall through
1383
1384         case wxPATH_UNIX:
1385             if ( !m_relative )
1386             {
1387                 // normally the absolute file names start with a slash
1388                 // with one exception: the ones like "~/foo.bar" don't
1389                 // have it
1390                 if ( m_dirs.IsEmpty() || m_dirs[0u] != _T('~') )
1391                 {
1392                     fullpath += wxFILE_SEP_PATH_UNIX;
1393                 }
1394             }
1395             break;
1396
1397         case wxPATH_VMS:
1398             // no leading character here but use this place to unset
1399             // wxPATH_GET_SEPARATOR flag: under VMS it doesn't make sense
1400             // as, if I understand correctly, there should never be a dot
1401             // before the closing bracket
1402             flags &= ~wxPATH_GET_SEPARATOR;
1403     }
1404
1405     if ( m_dirs.empty() )
1406     {
1407         // there is nothing more
1408         return fullpath;
1409     }
1410
1411     // then concatenate all the path components using the path separator
1412     if ( format == wxPATH_VMS )
1413     {
1414         fullpath += wxT('[');
1415     }
1416
1417     const size_t dirCount = m_dirs.GetCount();
1418     for ( size_t i = 0; i < dirCount; i++ )
1419     {
1420         switch (format)
1421         {
1422             case wxPATH_MAC:
1423                 if ( m_dirs[i] == wxT(".") )
1424                 {
1425                     // skip appending ':', this shouldn't be done in this
1426                     // case as "::" is interpreted as ".." under Unix
1427                     continue;
1428                 }
1429
1430                 // convert back from ".." to nothing
1431                 if ( m_dirs[i] != wxT("..") )
1432                      fullpath += m_dirs[i];
1433                 break;
1434
1435             default:
1436                 wxFAIL_MSG( wxT("Unexpected path format") );
1437                 // still fall through
1438
1439             case wxPATH_DOS:
1440             case wxPATH_UNIX:
1441                 fullpath += m_dirs[i];
1442                 break;
1443
1444             case wxPATH_VMS:
1445                 // TODO: What to do with ".." under VMS
1446
1447                 // convert back from ".." to nothing
1448                 if ( m_dirs[i] != wxT("..") )
1449                     fullpath += m_dirs[i];
1450                 break;
1451         }
1452
1453         if ( (flags & wxPATH_GET_SEPARATOR) || (i != dirCount - 1) )
1454             fullpath += GetPathSeparator(format);
1455     }
1456
1457     if ( format == wxPATH_VMS )
1458     {
1459         fullpath += wxT(']');
1460     }
1461
1462     return fullpath;
1463 }
1464
1465 wxString wxFileName::GetFullPath( wxPathFormat format ) const
1466 {
1467     // we already have a function to get the path
1468     wxString fullpath = GetPath(wxPATH_GET_VOLUME | wxPATH_GET_SEPARATOR,
1469                                 format);
1470
1471     // now just add the file name and extension to it
1472     fullpath += GetFullName();
1473
1474     return fullpath;
1475 }
1476
1477 // Return the short form of the path (returns identity on non-Windows platforms)
1478 wxString wxFileName::GetShortPath() const
1479 {
1480 #if defined(__WXMSW__) && defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
1481     wxString path(GetFullPath());
1482     wxString pathOut;
1483     DWORD sz = ::GetShortPathName(path, NULL, 0);
1484     bool ok = sz != 0;
1485     if ( ok )
1486     {
1487         ok = ::GetShortPathName
1488                (
1489                 path,
1490                 wxStringBuffer(pathOut, sz),
1491                 sz
1492                ) != 0;
1493     }
1494     if (ok)
1495         return pathOut;
1496
1497     return path;
1498 #else
1499     return GetFullPath();
1500 #endif
1501 }
1502
1503 // Return the long form of the path (returns identity on non-Windows platforms)
1504 wxString wxFileName::GetLongPath() const
1505 {
1506     wxString pathOut,
1507              path = GetFullPath();
1508
1509 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
1510     bool success = false;
1511
1512 #if wxUSE_DYNAMIC_LOADER
1513     typedef DWORD (WINAPI *GET_LONG_PATH_NAME)(const wxChar *, wxChar *, DWORD);
1514
1515     static bool s_triedToLoad = false;
1516
1517     if ( !s_triedToLoad )
1518     {
1519         // suppress the errors about missing GetLongPathName[AW]
1520         wxLogNull noLog;
1521
1522         s_triedToLoad = true;
1523         wxDynamicLibrary dllKernel(_T("kernel32"));
1524         if ( dllKernel.IsLoaded() )
1525         {
1526             // may succeed or fail depending on the Windows version
1527             static GET_LONG_PATH_NAME s_pfnGetLongPathName = NULL;
1528 #ifdef _UNICODE
1529             s_pfnGetLongPathName = (GET_LONG_PATH_NAME) dllKernel.GetSymbol(_T("GetLongPathNameW"));
1530 #else
1531             s_pfnGetLongPathName = (GET_LONG_PATH_NAME) dllKernel.GetSymbol(_T("GetLongPathNameA"));
1532 #endif
1533
1534             if ( s_pfnGetLongPathName )
1535             {
1536                 DWORD dwSize = (*s_pfnGetLongPathName)(path, NULL, 0);
1537                 bool ok = dwSize > 0;
1538
1539                 if ( ok )
1540                 {
1541                     DWORD sz = (*s_pfnGetLongPathName)(path, NULL, 0);
1542                     ok = sz != 0;
1543                     if ( ok )
1544                     {
1545                         ok = (*s_pfnGetLongPathName)
1546                                 (
1547                                 path,
1548                                 wxStringBuffer(pathOut, sz),
1549                                 sz
1550                                 ) != 0;
1551                         success = true;
1552                     }
1553                 }
1554             }
1555         }
1556     }
1557
1558     if (success)
1559         return pathOut;
1560 #endif // wxUSE_DYNAMIC_LOADER
1561
1562     if (!success)
1563     {
1564         // The OS didn't support GetLongPathName, or some other error.
1565         // We need to call FindFirstFile on each component in turn.
1566
1567         WIN32_FIND_DATA findFileData;
1568         HANDLE hFind;
1569
1570         if ( HasVolume() )
1571             pathOut = GetVolume() +
1572                       GetVolumeSeparator(wxPATH_DOS) +
1573                       GetPathSeparator(wxPATH_DOS);
1574         else
1575             pathOut = wxEmptyString;
1576
1577         wxArrayString dirs = GetDirs();
1578         dirs.Add(GetFullName());
1579
1580         wxString tmpPath;
1581
1582         size_t count = dirs.GetCount();
1583         for ( size_t i = 0; i < count; i++ )
1584         {
1585             // We're using pathOut to collect the long-name path, but using a
1586             // temporary for appending the last path component which may be
1587             // short-name
1588             tmpPath = pathOut + dirs[i];
1589
1590             if ( tmpPath.empty() )
1591                 continue;
1592
1593             // can't see this being necessary? MF
1594             if ( tmpPath.Last() == GetVolumeSeparator(wxPATH_DOS) )
1595             {
1596                 // Can't pass a drive and root dir to FindFirstFile,
1597                 // so continue to next dir
1598                 tmpPath += wxFILE_SEP_PATH;
1599                 pathOut = tmpPath;
1600                 continue;
1601             }
1602
1603             hFind = ::FindFirstFile(tmpPath, &findFileData);
1604             if (hFind == INVALID_HANDLE_VALUE)
1605             {
1606                 // Error: most likely reason is that path doesn't exist, so
1607                 // append any unprocessed parts and return
1608                 for ( i += 1; i < count; i++ )
1609                     tmpPath += wxFILE_SEP_PATH + dirs[i];
1610
1611                 return tmpPath;
1612             }
1613
1614             pathOut += findFileData.cFileName;
1615             if ( (i < (count-1)) )
1616                 pathOut += wxFILE_SEP_PATH;
1617
1618             ::FindClose(hFind);
1619         }
1620     }
1621 #else // !Win32
1622     pathOut = path;
1623 #endif // Win32/!Win32
1624
1625     return pathOut;
1626 }
1627
1628 wxPathFormat wxFileName::GetFormat( wxPathFormat format )
1629 {
1630     if (format == wxPATH_NATIVE)
1631     {
1632 #if defined(__WXMSW__) || defined(__OS2__) || defined(__DOS__)
1633         format = wxPATH_DOS;
1634 #elif defined(__WXMAC__) && !defined(__DARWIN__)
1635         format = wxPATH_MAC;
1636 #elif defined(__VMS)
1637         format = wxPATH_VMS;
1638 #else
1639         format = wxPATH_UNIX;
1640 #endif
1641     }
1642     return format;
1643 }
1644
1645 // ----------------------------------------------------------------------------
1646 // path splitting function
1647 // ----------------------------------------------------------------------------
1648
1649 /* static */
1650 void
1651 wxFileName::SplitVolume(const wxString& fullpathWithVolume,
1652                         wxString *pstrVolume,
1653                         wxString *pstrPath,
1654                         wxPathFormat format)
1655 {
1656     format = GetFormat(format);
1657
1658     wxString fullpath = fullpathWithVolume;
1659
1660     // special Windows UNC paths hack: transform \\share\path into share:path
1661     if ( format == wxPATH_DOS )
1662     {
1663         if ( fullpath.length() >= 4 &&
1664                 fullpath[0u] == wxFILE_SEP_PATH_DOS &&
1665                     fullpath[1u] == wxFILE_SEP_PATH_DOS )
1666         {
1667             fullpath.erase(0, 2);
1668
1669             size_t posFirstSlash =
1670                 fullpath.find_first_of(GetPathTerminators(format));
1671             if ( posFirstSlash != wxString::npos )
1672             {
1673                 fullpath[posFirstSlash] = wxFILE_SEP_DSK;
1674
1675                 // UNC paths are always absolute, right? (FIXME)
1676                 fullpath.insert(posFirstSlash + 1, 1, wxFILE_SEP_PATH_DOS);
1677             }
1678         }
1679     }
1680
1681     // We separate the volume here
1682     if ( format == wxPATH_DOS || format == wxPATH_VMS )
1683     {
1684         wxString sepVol = GetVolumeSeparator(format);
1685
1686         size_t posFirstColon = fullpath.find_first_of(sepVol);
1687         if ( posFirstColon != wxString::npos )
1688         {
1689             if ( pstrVolume )
1690             {
1691                 *pstrVolume = fullpath.Left(posFirstColon);
1692             }
1693
1694             // remove the volume name and the separator from the full path
1695             fullpath.erase(0, posFirstColon + sepVol.length());
1696         }
1697     }
1698
1699     if ( pstrPath )
1700         *pstrPath = fullpath;
1701 }
1702
1703 /* static */
1704 void wxFileName::SplitPath(const wxString& fullpathWithVolume,
1705                            wxString *pstrVolume,
1706                            wxString *pstrPath,
1707                            wxString *pstrName,
1708                            wxString *pstrExt,
1709                            wxPathFormat format)
1710 {
1711     format = GetFormat(format);
1712
1713     wxString fullpath;
1714     SplitVolume(fullpathWithVolume, pstrVolume, &fullpath, format);
1715
1716     // find the positions of the last dot and last path separator in the path
1717     size_t posLastDot = fullpath.find_last_of(wxFILE_SEP_EXT);
1718     size_t posLastSlash = fullpath.find_last_of(GetPathTerminators(format));
1719
1720     // check whether this dot occurs at the very beginning of a path component
1721     if ( (posLastDot != wxString::npos) &&
1722          (posLastDot == 0 ||
1723             IsPathSeparator(fullpath[posLastDot - 1]) ||
1724             (format == wxPATH_VMS && fullpath[posLastDot - 1] == _T(']'))) )
1725     {
1726         // dot may be (and commonly -- at least under Unix -- is) the first
1727         // character of the filename, don't treat the entire filename as
1728         // extension in this case
1729         posLastDot = wxString::npos;
1730     }
1731
1732     // if we do have a dot and a slash, check that the dot is in the name part
1733     if ( (posLastDot != wxString::npos) &&
1734          (posLastSlash != wxString::npos) &&
1735          (posLastDot < posLastSlash) )
1736     {
1737         // the dot is part of the path, not the start of the extension
1738         posLastDot = wxString::npos;
1739     }
1740
1741     // now fill in the variables provided by user
1742     if ( pstrPath )
1743     {
1744         if ( posLastSlash == wxString::npos )
1745         {
1746             // no path at all
1747             pstrPath->Empty();
1748         }
1749         else
1750         {
1751             // take everything up to the path separator but take care to make
1752             // the path equal to something like '/', not empty, for the files
1753             // immediately under root directory
1754             size_t len = posLastSlash;
1755
1756             // this rule does not apply to mac since we do not start with colons (sep)
1757             // except for relative paths
1758             if ( !len && format != wxPATH_MAC)
1759                 len++;
1760
1761             *pstrPath = fullpath.Left(len);
1762
1763             // special VMS hack: remove the initial bracket
1764             if ( format == wxPATH_VMS )
1765             {
1766                 if ( (*pstrPath)[0u] == _T('[') )
1767                     pstrPath->erase(0, 1);
1768             }
1769         }
1770     }
1771
1772     if ( pstrName )
1773     {
1774         // take all characters starting from the one after the last slash and
1775         // up to, but excluding, the last dot
1776         size_t nStart = posLastSlash == wxString::npos ? 0 : posLastSlash + 1;
1777         size_t count;
1778         if ( posLastDot == wxString::npos )
1779         {
1780             // take all until the end
1781             count = wxString::npos;
1782         }
1783         else if ( posLastSlash == wxString::npos )
1784         {
1785             count = posLastDot;
1786         }
1787         else // have both dot and slash
1788         {
1789             count = posLastDot - posLastSlash - 1;
1790         }
1791
1792         *pstrName = fullpath.Mid(nStart, count);
1793     }
1794
1795     if ( pstrExt )
1796     {
1797         if ( posLastDot == wxString::npos )
1798         {
1799             // no extension
1800             pstrExt->Empty();
1801         }
1802         else
1803         {
1804             // take everything after the dot
1805             *pstrExt = fullpath.Mid(posLastDot + 1);
1806         }
1807     }
1808 }
1809
1810 /* static */
1811 void wxFileName::SplitPath(const wxString& fullpath,
1812                            wxString *path,
1813                            wxString *name,
1814                            wxString *ext,
1815                            wxPathFormat format)
1816 {
1817     wxString volume;
1818     SplitPath(fullpath, &volume, path, name, ext, format);
1819
1820     if ( path )
1821     {
1822         path->Prepend(wxGetVolumeString(volume, format));
1823     }
1824 }
1825
1826 // ----------------------------------------------------------------------------
1827 // time functions
1828 // ----------------------------------------------------------------------------
1829
1830 #if wxUSE_DATETIME
1831
1832 bool wxFileName::SetTimes(const wxDateTime *dtAccess,
1833                           const wxDateTime *dtMod,
1834                           const wxDateTime *dtCreate)
1835 {
1836 #if defined(__WIN32__)
1837     if ( IsDir() )
1838     {
1839         // VZ: please let me know how to do this if you can
1840         wxFAIL_MSG( _T("SetTimes() not implemented for the directories") );
1841     }
1842     else // file
1843     {
1844         wxFileHandle fh(GetFullPath(), wxFileHandle::Write);
1845         if ( fh.IsOk() )
1846         {
1847             FILETIME ftAccess, ftCreate, ftWrite;
1848
1849             if ( dtCreate )
1850                 ConvertWxToFileTime(&ftCreate, *dtCreate);
1851             if ( dtAccess )
1852                 ConvertWxToFileTime(&ftAccess, *dtAccess);
1853             if ( dtMod )
1854                 ConvertWxToFileTime(&ftWrite, *dtMod);
1855
1856             if ( ::SetFileTime(fh,
1857                                dtCreate ? &ftCreate : NULL,
1858                                dtAccess ? &ftAccess : NULL,
1859                                dtMod ? &ftWrite : NULL) )
1860             {
1861                 return true;
1862             }
1863         }
1864     }
1865 #elif defined(__UNIX_LIKE__) || (defined(__DOS__) && defined(__WATCOMC__))
1866     if ( !dtAccess && !dtMod )
1867     {
1868         // can't modify the creation time anyhow, don't try
1869         return true;
1870     }
1871
1872     // if dtAccess or dtMod is not specified, use the other one (which must be
1873     // non NULL because of the test above) for both times
1874     utimbuf utm;
1875     utm.actime = dtAccess ? dtAccess->GetTicks() : dtMod->GetTicks();
1876     utm.modtime = dtMod ? dtMod->GetTicks() : dtAccess->GetTicks();
1877     if ( utime(GetFullPath().fn_str(), &utm) == 0 )
1878     {
1879         return true;
1880     }
1881 #else // other platform
1882 #endif // platforms
1883
1884     wxLogSysError(_("Failed to modify file times for '%s'"),
1885                   GetFullPath().c_str());
1886
1887     return false;
1888 }
1889
1890 bool wxFileName::Touch()
1891 {
1892 #if defined(__UNIX_LIKE__)
1893     // under Unix touching file is simple: just pass NULL to utime()
1894     if ( utime(GetFullPath().fn_str(), NULL) == 0 )
1895     {
1896         return true;
1897     }
1898
1899     wxLogSysError(_("Failed to touch the file '%s'"), GetFullPath().c_str());
1900
1901     return false;
1902 #else // other platform
1903     wxDateTime dtNow = wxDateTime::Now();
1904
1905     return SetTimes(&dtNow, &dtNow, NULL /* don't change create time */);
1906 #endif // platforms
1907 }
1908
1909 bool wxFileName::GetTimes(wxDateTime *dtAccess,
1910                           wxDateTime *dtMod,
1911                           wxDateTime *dtCreate) const
1912 {
1913 #if defined(__WIN32__)
1914     // we must use different methods for the files and directories under
1915     // Windows as CreateFile(GENERIC_READ) doesn't work for the directories and
1916     // CreateFile(FILE_FLAG_BACKUP_SEMANTICS) works -- but only under NT and
1917     // not 9x
1918     bool ok;
1919     FILETIME ftAccess, ftCreate, ftWrite;
1920     if ( IsDir() )
1921     {
1922         // implemented in msw/dir.cpp
1923         extern bool wxGetDirectoryTimes(const wxString& dirname,
1924                                         FILETIME *, FILETIME *, FILETIME *);
1925
1926         // we should pass the path without the trailing separator to
1927         // wxGetDirectoryTimes()
1928         ok = wxGetDirectoryTimes(GetPath(wxPATH_GET_VOLUME),
1929                                  &ftAccess, &ftCreate, &ftWrite);
1930     }
1931     else // file
1932     {
1933         wxFileHandle fh(GetFullPath(), wxFileHandle::Read);
1934         if ( fh.IsOk() )
1935         {
1936             ok = ::GetFileTime(fh,
1937                                dtCreate ? &ftCreate : NULL,
1938                                dtAccess ? &ftAccess : NULL,
1939                                dtMod ? &ftWrite : NULL) != 0;
1940         }
1941         else
1942         {
1943             ok = false;
1944         }
1945     }
1946
1947     if ( ok )
1948     {
1949         if ( dtCreate )
1950             ConvertFileTimeToWx(dtCreate, ftCreate);
1951         if ( dtAccess )
1952             ConvertFileTimeToWx(dtAccess, ftAccess);
1953         if ( dtMod )
1954             ConvertFileTimeToWx(dtMod, ftWrite);
1955
1956         return true;
1957     }
1958 #elif defined(__UNIX_LIKE__) || defined(__WXMAC__) || (defined(__DOS__) && defined(__WATCOMC__))
1959     wxStructStat stBuf;
1960     if ( wxStat( GetFullPath().c_str(), &stBuf) == 0 )
1961     {
1962         if ( dtAccess )
1963             dtAccess->Set(stBuf.st_atime);
1964         if ( dtMod )
1965             dtMod->Set(stBuf.st_mtime);
1966         if ( dtCreate )
1967             dtCreate->Set(stBuf.st_ctime);
1968
1969         return true;
1970     }
1971 #else // other platform
1972 #endif // platforms
1973
1974     wxLogSysError(_("Failed to retrieve file times for '%s'"),
1975                   GetFullPath().c_str());
1976
1977     return false;
1978 }
1979
1980 #endif // wxUSE_DATETIME
1981
1982 #ifdef __WXMAC__
1983
1984 const short kMacExtensionMaxLength = 16 ;
1985 class MacDefaultExtensionRecord
1986 {
1987 public :
1988   MacDefaultExtensionRecord()
1989   {
1990     m_ext[0] = 0 ;
1991     m_type = m_creator = NULL ;
1992   }
1993   MacDefaultExtensionRecord( const MacDefaultExtensionRecord& from )
1994   {
1995     wxStrcpy( m_ext , from.m_ext ) ;
1996     m_type = from.m_type ;
1997     m_creator = from.m_creator ;
1998   }
1999   MacDefaultExtensionRecord( const wxChar * extension , OSType type , OSType creator )
2000   {
2001     wxStrncpy( m_ext , extension , kMacExtensionMaxLength ) ;
2002     m_ext[kMacExtensionMaxLength] = 0 ;
2003     m_type = type ;
2004     m_creator = creator ;
2005   }
2006   wxChar m_ext[kMacExtensionMaxLength] ;
2007   OSType m_type ;
2008   OSType m_creator ;
2009 }  ;
2010
2011 #include "wx/dynarray.h"
2012 WX_DECLARE_OBJARRAY(MacDefaultExtensionRecord, MacDefaultExtensionArray) ;
2013
2014 bool gMacDefaultExtensionsInited = false ;
2015
2016 #include "wx/arrimpl.cpp"
2017
2018 WX_DEFINE_EXPORTED_OBJARRAY(MacDefaultExtensionArray) ;
2019
2020 MacDefaultExtensionArray gMacDefaultExtensions ;
2021
2022 // load the default extensions
2023 MacDefaultExtensionRecord gDefaults[] =
2024 {
2025     MacDefaultExtensionRecord( wxT("txt") , 'TEXT' , 'ttxt' ) ,
2026     MacDefaultExtensionRecord( wxT("tif") , 'TIFF' , '****' ) ,
2027     MacDefaultExtensionRecord( wxT("jpg") , 'JPEG' , '****' ) ,
2028 } ;
2029
2030 static void MacEnsureDefaultExtensionsLoaded()
2031 {
2032     if ( !gMacDefaultExtensionsInited )
2033     {
2034         // we could load the pc exchange prefs here too
2035         for ( size_t i = 0 ; i < WXSIZEOF( gDefaults ) ; ++i )
2036         {
2037             gMacDefaultExtensions.Add( gDefaults[i] ) ;
2038         }
2039         gMacDefaultExtensionsInited = true ;
2040     }
2041 }
2042
2043 bool wxFileName::MacSetTypeAndCreator( wxUint32 type , wxUint32 creator )
2044 {
2045     FSRef fsRef ;
2046     FSCatalogInfo catInfo;
2047     FileInfo *finfo ;
2048
2049     if ( wxMacPathToFSRef( GetFullPath() , &fsRef ) == noErr )
2050     {
2051         if ( FSGetCatalogInfo (&fsRef, kFSCatInfoFinderInfo, &catInfo, NULL, NULL, NULL) == noErr )
2052         {
2053             finfo = (FileInfo*)&catInfo.finderInfo;
2054             finfo->fileType = type ;
2055             finfo->fileCreator = creator ;
2056             FSSetCatalogInfo( &fsRef, kFSCatInfoFinderInfo, &catInfo ) ;
2057             return true ;
2058         }
2059     }
2060     return false ;
2061 }
2062
2063 bool wxFileName::MacGetTypeAndCreator( wxUint32 *type , wxUint32 *creator )
2064 {
2065     FSRef fsRef ;
2066     FSCatalogInfo catInfo;
2067     FileInfo *finfo ;
2068
2069     if ( wxMacPathToFSRef( GetFullPath() , &fsRef ) == noErr )
2070     {
2071         if ( FSGetCatalogInfo (&fsRef, kFSCatInfoFinderInfo, &catInfo, NULL, NULL, NULL) == noErr )
2072         {
2073             finfo = (FileInfo*)&catInfo.finderInfo;
2074             *type = finfo->fileType ;
2075             *creator = finfo->fileCreator ;
2076             return true ;
2077         }
2078     }
2079     return false ;
2080 }
2081
2082 bool wxFileName::MacSetDefaultTypeAndCreator()
2083 {
2084     wxUint32 type , creator ;
2085     if ( wxFileName::MacFindDefaultTypeAndCreator(GetExt() , &type ,
2086       &creator ) )
2087     {
2088         return MacSetTypeAndCreator( type , creator ) ;
2089     }
2090     return false;
2091 }
2092
2093 bool wxFileName::MacFindDefaultTypeAndCreator( const wxString& ext , wxUint32 *type , wxUint32 *creator )
2094 {
2095   MacEnsureDefaultExtensionsLoaded() ;
2096   wxString extl = ext.Lower() ;
2097   for( int i = gMacDefaultExtensions.Count() - 1 ; i >= 0 ; --i )
2098   {
2099     if ( gMacDefaultExtensions.Item(i).m_ext == extl )
2100     {
2101       *type = gMacDefaultExtensions.Item(i).m_type ;
2102       *creator = gMacDefaultExtensions.Item(i).m_creator ;
2103       return true ;
2104     }
2105   }
2106   return false ;
2107 }
2108
2109 void wxFileName::MacRegisterDefaultTypeAndCreator( const wxString& ext , wxUint32 type , wxUint32 creator )
2110 {
2111   MacEnsureDefaultExtensionsLoaded() ;
2112   MacDefaultExtensionRecord rec ;
2113   rec.m_type = type ;
2114   rec.m_creator = creator ;
2115   wxStrncpy( rec.m_ext , ext.Lower().c_str() , kMacExtensionMaxLength ) ;
2116   gMacDefaultExtensions.Add( rec ) ;
2117 }
2118 #endif