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