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"
  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 // return a string with the volume par
 243 static wxString wxGetVolumeString(const wxString& volume, wxPathFormat format)
 244 {
 245     wxString path;
 246
 247     if ( !volume.empty() )
 248     {
 249         format = wxFileName::GetFormat(format);
 250
 251         // Special Windows UNC paths hack, part 2: undo what we did in
 252         // SplitPath() and make an UNC path if we have a drive which is not a
 253         // single letter (hopefully the network shares can't be one letter only
 254         // although I didn't find any authoritative docs on this)
 255         if ( format == wxPATH_DOS && volume.length() > 1 )
 256         {
 257             path << wxFILE_SEP_PATH_DOS << wxFILE_SEP_PATH_DOS << volume;
 258         }
 259         else if  ( format == wxPATH_DOS || format == wxPATH_VMS )
 260         {
 261             path << volume << wxFileName::GetVolumeSeparator(format);
 262         }
 263         // else ignore
 264     }
 265
 266     return path;
 267 }
 268
 269 // ============================================================================
 270 // implementation
 271 // ============================================================================
 272
 273 // ----------------------------------------------------------------------------
 274 // wxFileName construction
 275 // ----------------------------------------------------------------------------
 276
 277 void wxFileName::Assign( const wxFileName &filepath )
 278 {
 279     m_volume = filepath.GetVolume();
 280     m_dirs = filepath.GetDirs();
 281     m_name = filepath.GetName();
 282     m_ext = filepath.GetExt();
 283     m_relative = filepath.m_relative;
 284 }
 285
 286 void wxFileName::Assign(const wxString& volume,
 287                         const wxString& path,
 288                         const wxString& name,
 289                         const wxString& ext,
 290                         wxPathFormat format )
 291 {
 292     SetPath( path, format );
 293
 294     m_volume = volume;
 295     m_ext = ext;
 296     m_name = name;
 297 }
 298
 299 void wxFileName::SetPath( const wxString &path, wxPathFormat format )
 300 {
 301     m_dirs.Clear();
 302
 303     if ( !path.empty() )
 304     {
 305         wxPathFormat my_format = GetFormat( format );
 306         wxString my_path = path;
 307
 308         // 1) Determine if the path is relative or absolute.
 309         wxChar leadingChar = my_path[0u];
 310
 311         switch (my_format)
 312         {
 313             case wxPATH_MAC:
 314                 m_relative = leadingChar == wxT(':');
 315
 316                 // We then remove a leading ":". The reason is in our
 317                 // storage form for relative paths:
 318                 // ":dir:file.txt" actually means "./dir/file.txt" in
 319                 // DOS notation and should get stored as
 320                 // (relative) (dir) (file.txt)
 321                 // "::dir:file.txt" actually means "../dir/file.txt"
 322                 // stored as (relative) (..) (dir) (file.txt)
 323                 // This is important only for the Mac as an empty dir
 324                 // actually means <UP>, whereas under DOS, double
 325                 // slashes can be ignored: "\\\\" is the same as "\\".
 326                 if (m_relative)
 327                     my_path.erase( 0, 1 );
 328                 break;
 329
 330             case wxPATH_VMS:
 331                 // TODO: what is the relative path format here?
 332                 m_relative = FALSE;
 333                 break;
 334
 335             case wxPATH_UNIX:
 336                 // the paths of the form "~" or "~username" are absolute
 337                 m_relative = leadingChar != wxT('/') && leadingChar != _T('~');
 338                 break;
 339
 340             case wxPATH_DOS:
 341                 m_relative = !IsPathSeparator(leadingChar, my_format);
 342                 break;
 343
 344             default:
 345                 wxFAIL_MSG( wxT("error") );
 346                 break;
 347         }
 348
 349         // 2) Break up the path into its members. If the original path
 350         //    was just "/" or "\\", m_dirs will be empty. We know from
 351         //    the m_relative field, if this means "nothing" or "root dir".
 352
 353         wxStringTokenizer tn( my_path, GetPathSeparators(my_format) );
 354
 355         while ( tn.HasMoreTokens() )
 356         {
 357             wxString token = tn.GetNextToken();
 358
 359             // Remove empty token under DOS and Unix, interpret them
 360             // as .. under Mac.
 361             if (token.empty())
 362             {
 363                 if (my_format == wxPATH_MAC)
 364                     m_dirs.Add( wxT("..") );
 365                 // else ignore
 366             }
 367             else
 368             {
 369                m_dirs.Add( token );
 370             }
 371         }
 372     }
 373     else // no path at all
 374     {
 375         m_relative = TRUE;
 376     }
 377 }
 378
 379 void wxFileName::Assign(const wxString& fullpath,
 380                         wxPathFormat format)
 381 {
 382     wxString volume, path, name, ext;
 383     SplitPath(fullpath, &volume, &path, &name, &ext, format);
 384
 385     Assign(volume, path, name, ext, format);
 386 }
 387
 388 void wxFileName::Assign(const wxString& fullpathOrig,
 389                         const wxString& fullname,
 390                         wxPathFormat format)
 391 {
 392     // always recognize fullpath as directory, even if it doesn't end with a
 393     // slash
 394     wxString fullpath = fullpathOrig;
 395     if ( !wxEndsWithPathSeparator(fullpath) )
 396     {
 397         fullpath += GetPathSeparator(format);
 398     }
 399
 400     wxString volume, path, name, ext;
 401
 402     // do some consistency checks in debug mode: the name should be really just
 403     // the filename and the path should be really just a path
 404 #ifdef __WXDEBUG__
 405     wxString pathDummy, nameDummy, extDummy;
 406
 407     SplitPath(fullname, &pathDummy, &name, &ext, format);
 408
 409     wxASSERT_MSG( pathDummy.empty(),
 410                   _T("the file name shouldn't contain the path") );
 411
 412     SplitPath(fullpath, &volume, &path, &nameDummy, &extDummy, format);
 413
 414     wxASSERT_MSG( nameDummy.empty() && extDummy.empty(),
 415                   _T("the path shouldn't contain file name nor extension") );
 416
 417 #else // !__WXDEBUG__
 418     SplitPath(fullname, NULL /* no path */, &name, &ext, format);
 419     SplitPath(fullpath, &volume, &path, NULL, NULL, format);
 420 #endif // __WXDEBUG__/!__WXDEBUG__
 421
 422     Assign(volume, path, name, ext, format);
 423 }
 424
 425 void wxFileName::AssignDir(const wxString& dir, wxPathFormat format)
 426 {
 427     Assign(dir, _T(""), format);
 428 }
 429
 430 void wxFileName::Clear()
 431 {
 432     m_dirs.Clear();
 433
 434     m_volume =
 435     m_name =
 436     m_ext = wxEmptyString;
 437 }
 438
 439 /* static */
 440 wxFileName wxFileName::FileName(const wxString& file)
 441 {
 442     return wxFileName(file);
 443 }
 444
 445 /* static */
 446 wxFileName wxFileName::DirName(const wxString& dir)
 447 {
 448     wxFileName fn;
 449     fn.AssignDir(dir);
 450     return fn;
 451 }
 452
 453 // ----------------------------------------------------------------------------
 454 // existence tests
 455 // ----------------------------------------------------------------------------
 456
 457 bool wxFileName::FileExists()
 458 {
 459     return wxFileName::FileExists( GetFullPath() );
 460 }
 461
 462 bool wxFileName::FileExists( const wxString &file )
 463 {
 464     return ::wxFileExists( file );
 465 }
 466
 467 bool wxFileName::DirExists()
 468 {
 469     return wxFileName::DirExists( GetFullPath() );
 470 }
 471
 472 bool wxFileName::DirExists( const wxString &dir )
 473 {
 474     return ::wxDirExists( dir );
 475 }
 476
 477 // ----------------------------------------------------------------------------
 478 // CWD and HOME stuff
 479 // ----------------------------------------------------------------------------
 480
 481 void wxFileName::AssignCwd(const wxString& volume)
 482 {
 483     AssignDir(wxFileName::GetCwd(volume));
 484 }
 485
 486 /* static */
 487 wxString wxFileName::GetCwd(const wxString& volume)
 488 {
 489     // if we have the volume, we must get the current directory on this drive
 490     // and to do this we have to chdir to this volume - at least under Windows,
 491     // I don't know how to get the current drive on another volume elsewhere
 492     // (TODO)
 493     wxString cwdOld;
 494     if ( !volume.empty() )
 495     {
 496         cwdOld = wxGetCwd();
 497         SetCwd(volume + GetVolumeSeparator());
 498     }
 499
 500     wxString cwd = ::wxGetCwd();
 501
 502     if ( !volume.empty() )
 503     {
 504         SetCwd(cwdOld);
 505     }
 506
 507     return cwd;
 508 }
 509
 510 bool wxFileName::SetCwd()
 511 {
 512     return wxFileName::SetCwd( GetFullPath() );
 513 }
 514
 515 bool wxFileName::SetCwd( const wxString &cwd )
 516 {
 517     return ::wxSetWorkingDirectory( cwd );
 518 }
 519
 520 void wxFileName::AssignHomeDir()
 521 {
 522     AssignDir(wxFileName::GetHomeDir());
 523 }
 524
 525 wxString wxFileName::GetHomeDir()
 526 {
 527     return ::wxGetHomeDir();
 528 }
 529
 530 void wxFileName::AssignTempFileName(const wxString& prefix, wxFile *fileTemp)
 531 {
 532     wxString tempname = CreateTempFileName(prefix, fileTemp);
 533     if ( tempname.empty() )
 534     {
 535         // error, failed to get temp file name
 536         Clear();
 537     }
 538     else // ok
 539     {
 540         Assign(tempname);
 541     }
 542 }
 543
 544 /* static */
 545 wxString
 546 wxFileName::CreateTempFileName(const wxString& prefix, wxFile *fileTemp)
 547 {
 548     wxString path, dir, name;
 549
 550     // use the directory specified by the prefix
 551     SplitPath(prefix, &dir, &name, NULL /* extension */);
 552
 553 #if defined(__WINDOWS__) && !defined(__WXMICROWIN__)
 554
 555 #ifdef __WIN32__
 556     if ( dir.empty() )
 557     {
 558         if ( !::GetTempPath(MAX_PATH, wxStringBuffer(dir, MAX_PATH + 1)) )
 559         {
 560             wxLogLastError(_T("GetTempPath"));
 561         }
 562
 563         if ( dir.empty() )
 564         {
 565             // GetTempFileName() fails if we pass it an empty string
 566             dir = _T('.');
 567         }
 568     }
 569     else // we have a dir to create the file in
 570     {
 571         // ensure we use only the back slashes as GetTempFileName(), unlike all
 572         // the other APIs, is picky and doesn't accept the forward ones
 573         dir.Replace(_T("/"), _T("\\"));
 574     }
 575
 576     if ( !::GetTempFileName(dir, name, 0, wxStringBuffer(path, MAX_PATH + 1)) )
 577     {
 578         wxLogLastError(_T("GetTempFileName"));
 579
 580         path.clear();
 581     }
 582 #else // Win16
 583     if ( !::GetTempFileName(NULL, prefix, 0, wxStringBuffer(path, 1025)) )
 584     {
 585         path.clear();
 586     }
 587 #endif // Win32/16
 588
 589 #elif defined(__WXPM__)
 590     // for now just create a file
 591     //
 592     // future enhancements can be to set some extended attributes for file
 593     // systems OS/2 supports that have them (HPFS, FAT32) and security
 594     // (HPFS386)
 595     static const wxChar *szMktempSuffix = wxT("XXX");
 596     path << dir << _T('/') << name << szMktempSuffix;
 597
 598     // Temporarily remove - MN
 599     #ifndef __WATCOMC__
 600         ::DosCreateDir(wxStringBuffer(path, MAX_PATH), NULL);
 601     #endif
 602
 603 #else // !Windows, !OS/2
 604     if ( dir.empty() )
 605     {
 606 #if defined(__WXMAC__) && !defined(__DARWIN__)
 607         dir = wxMacFindFolder(  (short) kOnSystemDisk, kTemporaryFolderType, kCreateFolder ) ;
 608 #else // !Mac
 609         dir = wxGetenv(_T("TMP"));
 610         if ( dir.empty() )
 611         {
 612             dir = wxGetenv(_T("TEMP"));
 613         }
 614
 615         if ( dir.empty() )
 616         {
 617             // default
 618             #ifdef __DOS__
 619                 dir = _T(".");
 620             #else
 621                 dir = _T("/tmp");
 622             #endif
 623         }
 624 #endif // Mac/!Mac
 625     }
 626
 627     path = dir;
 628
 629     if ( !wxEndsWithPathSeparator(dir) &&
 630             (name.empty() || !wxIsPathSeparator(name[0u])) )
 631     {
 632         path += wxFILE_SEP_PATH;
 633     }
 634
 635     path += name;
 636
 637     // Needed for Unicode/Ansi conversion
 638     char buf[500];
 639
 640 #if defined(HAVE_MKSTEMP)
 641     // scratch space for mkstemp()
 642     path += _T("XXXXXX");
 643
 644 #if wxUSE_UNICODE
 645     strcpy( buf, wxConvFile.cWC2MB( path ) );
 646 #else
 647     strcpy( buf, path.c_str() );
 648 #endif
 649     int fdTemp = mkstemp( buf );
 650     if ( fdTemp == -1 )
 651     {
 652         // this might be not necessary as mkstemp() on most systems should have
 653         // already done it but it doesn't hurt neither...
 654         path.clear();
 655     }
 656     else // mkstemp() succeeded
 657     {
 658 #if wxUSE_UNICODE
 659         path = wxConvFile.cMB2WC( buf );
 660 #else
 661         path = buf;
 662 #endif
 663         // avoid leaking the fd
 664         if ( fileTemp )
 665         {
 666             fileTemp->Attach(fdTemp);
 667         }
 668         else
 669         {
 670             close(fdTemp);
 671         }
 672     }
 673 #else // !HAVE_MKSTEMP
 674
 675 #ifdef HAVE_MKTEMP
 676     // same as above
 677     path += _T("XXXXXX");
 678
 679 #if wxUSE_UNICODE
 680     strcpy( buf, wxConvFile.cWC2MB( path ) );
 681 #else
 682     strcpy( buf, path.c_str() );
 683 #endif
 684     if ( !mktemp( buf )
 685     {
 686         path.clear();
 687     }
 688     else
 689     {
 690 #if wxUSE_UNICODE
 691         path = wxConvFile.cMB2WC( buf );
 692 #else
 693         path = buf;
 694 #endif
 695     }
 696 #else // !HAVE_MKTEMP (includes __DOS__)
 697     // generate the unique file name ourselves
 698     #ifndef __DOS__
 699     path << (unsigned int)getpid();
 700     #endif
 701
 702     wxString pathTry;
 703
 704     static const size_t numTries = 1000;
 705     for ( size_t n = 0; n < numTries; n++ )
 706     {
 707         // 3 hex digits is enough for numTries == 1000 < 4096
 708         pathTry = path + wxString::Format(_T("%.03x"), n);
 709         if ( !wxFile::Exists(pathTry) )
 710         {
 711             break;
 712         }
 713
 714         pathTry.clear();
 715     }
 716
 717     path = pathTry;
 718 #endif // HAVE_MKTEMP/!HAVE_MKTEMP
 719
 720     if ( !path.empty() )
 721     {
 722     }
 723 #endif // HAVE_MKSTEMP/!HAVE_MKSTEMP
 724
 725 #endif // Windows/!Windows
 726
 727     if ( path.empty() )
 728     {
 729         wxLogSysError(_("Failed to create a temporary file name"));
 730     }
 731     else if ( fileTemp && !fileTemp->IsOpened() )
 732     {
 733         // open the file - of course, there is a race condition here, this is
 734         // why we always prefer using mkstemp()...
 735         //
 736         // NB: GetTempFileName() under Windows creates the file, so using
 737         //     write_excl there would fail
 738         if ( !fileTemp->Open(path,
 739 #if defined(__WINDOWS__) && !defined(__WXMICROWIN__)
 740                              wxFile::write,
 741 #else
 742                              wxFile::write_excl,
 743 #endif
 744                              wxS_IRUSR | wxS_IWUSR) )
 745         {
 746             // FIXME: If !ok here should we loop and try again with another
 747             //        file name?  That is the standard recourse if open(O_EXCL)
 748             //        fails, though of course it should be protected against
 749             //        possible infinite looping too.
 750
 751             wxLogError(_("Failed to open temporary file."));
 752
 753             path.clear();
 754         }
 755     }
 756
 757     return path;
 758 }
 759
 760 // ----------------------------------------------------------------------------
 761 // directory operations
 762 // ----------------------------------------------------------------------------
 763
 764 bool wxFileName::Mkdir( int perm, int flags )
 765 {
 766     return wxFileName::Mkdir( GetFullPath(), perm, flags );
 767 }
 768
 769 bool wxFileName::Mkdir( const wxString& dir, int perm, int flags )
 770 {
 771     if ( flags & wxPATH_MKDIR_FULL )
 772     {
 773         // split the path in components
 774         wxFileName filename;
 775         filename.AssignDir(dir);
 776
 777         wxString currPath;
 778         if ( filename.HasVolume())
 779         {
 780             currPath << wxGetVolumeString(filename.GetVolume(), wxPATH_NATIVE);
 781         }
 782
 783         wxArrayString dirs = filename.GetDirs();
 784         size_t count = dirs.GetCount();
 785         for ( size_t i = 0; i < count; i++ )
 786         {
 787             if ( i > 0 || filename.IsAbsolute() )
 788                 currPath += wxFILE_SEP_PATH;
 789             currPath += dirs[i];
 790
 791             if (!DirExists(currPath))
 792             {
 793                 if (!wxMkdir(currPath, perm))
 794                 {
 795                     // no need to try creating further directories
 796                     return FALSE;
 797                 }
 798             }
 799         }
 800
 801         return TRUE;
 802
 803     }
 804
 805     return ::wxMkdir( dir, perm );
 806 }
 807
 808 bool wxFileName::Rmdir()
 809 {
 810     return wxFileName::Rmdir( GetFullPath() );
 811 }
 812
 813 bool wxFileName::Rmdir( const wxString &dir )
 814 {
 815     return ::wxRmdir( dir );
 816 }
 817
 818 // ----------------------------------------------------------------------------
 819 // path normalization
 820 // ----------------------------------------------------------------------------
 821
 822 bool wxFileName::Normalize(int flags,
 823                            const wxString& cwd,
 824                            wxPathFormat format)
 825 {
 826     // the existing path components
 827     wxArrayString dirs = GetDirs();
 828
 829     // the path to prepend in front to make the path absolute
 830     wxFileName curDir;
 831
 832     format = GetFormat(format);
 833
 834     // make the path absolute
 835     if ( (flags & wxPATH_NORM_ABSOLUTE) && !IsAbsolute(format) )
 836     {
 837         if ( cwd.empty() )
 838         {
 839             curDir.AssignCwd(GetVolume());
 840         }
 841         else // cwd provided
 842         {
 843             curDir.AssignDir(cwd);
 844         }
 845
 846         // the path may be not absolute because it doesn't have the volume name
 847         // but in this case we shouldn't modify the directory components of it
 848         // but just set the current volume
 849         if ( !HasVolume() && curDir.HasVolume() )
 850         {
 851             SetVolume(curDir.GetVolume());
 852
 853             if ( !m_relative )
 854             {
 855                 // yes, it was the case - we don't need curDir then
 856                 curDir.Clear();
 857             }
 858         }
 859     }
 860
 861     // handle ~ stuff under Unix only
 862     if ( (format == wxPATH_UNIX) && (flags & wxPATH_NORM_TILDE) )
 863     {
 864         if ( !dirs.IsEmpty() )
 865         {
 866             wxString dir = dirs[0u];
 867             if ( !dir.empty() && dir[0u] == _T('~') )
 868             {
 869                 curDir.AssignDir(wxGetUserHome(dir.c_str() + 1));
 870
 871                 dirs.RemoveAt(0u);
 872             }
 873         }
 874     }
 875
 876     // transform relative path into abs one
 877     if ( curDir.IsOk() )
 878     {
 879         wxArrayString dirsNew = curDir.GetDirs();
 880         size_t count = dirs.GetCount();
 881         for ( size_t n = 0; n < count; n++ )
 882         {
 883             dirsNew.Add(dirs[n]);
 884         }
 885
 886         dirs = dirsNew;
 887     }
 888
 889     // now deal with ".", ".." and the rest
 890     m_dirs.Empty();
 891     size_t count = dirs.GetCount();
 892     for ( size_t n = 0; n < count; n++ )
 893     {
 894         wxString dir = dirs[n];
 895
 896         if ( flags & wxPATH_NORM_DOTS )
 897         {
 898             if ( dir == wxT(".") )
 899             {
 900                 // just ignore
 901                 continue;
 902             }
 903
 904             if ( dir == wxT("..") )
 905             {
 906                 if ( m_dirs.IsEmpty() )
 907                 {
 908                     wxLogError(_("The path '%s' contains too many \"..\"!"),
 909                                GetFullPath().c_str());
 910                     return FALSE;
 911                 }
 912
 913                 m_dirs.RemoveAt(m_dirs.GetCount() - 1);
 914                 continue;
 915             }
 916         }
 917
 918         if ( flags & wxPATH_NORM_ENV_VARS )
 919         {
 920             dir = wxExpandEnvVars(dir);
 921         }
 922
 923         if ( (flags & wxPATH_NORM_CASE) && !IsCaseSensitive(format) )
 924         {
 925             dir.MakeLower();
 926         }
 927
 928         m_dirs.Add(dir);
 929     }
 930
 931     if ( (flags & wxPATH_NORM_CASE) && !IsCaseSensitive(format) )
 932     {
 933         // VZ: expand env vars here too?
 934
 935         m_name.MakeLower();
 936         m_ext.MakeLower();
 937     }
 938
 939     // we do have the path now
 940     //
 941     // NB: need to do this before (maybe) calling Assign() below
 942     m_relative = FALSE;
 943
 944 #if defined(__WIN32__)
 945     if ( (flags & wxPATH_NORM_LONG) && (format == wxPATH_DOS) )
 946     {
 947         Assign(GetLongPath());
 948     }
 949 #endif // Win32
 950
 951     return TRUE;
 952 }
 953
 954 // ----------------------------------------------------------------------------
 955 // absolute/relative paths
 956 // ----------------------------------------------------------------------------
 957
 958 bool wxFileName::IsAbsolute(wxPathFormat format) const
 959 {
 960     // if our path doesn't start with a path separator, it's not an absolute
 961     // path
 962     if ( m_relative )
 963         return FALSE;
 964
 965     if ( !GetVolumeSeparator(format).empty() )
 966     {
 967         // this format has volumes and an absolute path must have one, it's not
 968         // enough to have the full path to bean absolute file under Windows
 969         if ( GetVolume().empty() )
 970             return FALSE;
 971     }
 972
 973     return TRUE;
 974 }
 975
 976 bool wxFileName::MakeRelativeTo(const wxString& pathBase, wxPathFormat format)
 977 {
 978     wxFileName fnBase(pathBase, format);
 979
 980     // get cwd only once - small time saving
 981     wxString cwd = wxGetCwd();
 982     Normalize(wxPATH_NORM_ALL, cwd, format);
 983     fnBase.Normalize(wxPATH_NORM_ALL, cwd, format);
 984
 985     bool withCase = IsCaseSensitive(format);
 986
 987     // we can't do anything if the files live on different volumes
 988     if ( !GetVolume().IsSameAs(fnBase.GetVolume(), withCase) )
 989     {
 990         // nothing done
 991         return FALSE;
 992     }
 993
 994     // same drive, so we don't need our volume
 995     m_volume.clear();
 996
 997     // remove common directories starting at the top
 998     while ( !m_dirs.IsEmpty() && !fnBase.m_dirs.IsEmpty() &&
 999                 m_dirs[0u].IsSameAs(fnBase.m_dirs[0u], withCase) )
1000     {
1001         m_dirs.RemoveAt(0);
1002         fnBase.m_dirs.RemoveAt(0);
1003     }
1004
1005     // add as many ".." as needed
1006     size_t count = fnBase.m_dirs.GetCount();
1007     for ( size_t i = 0; i < count; i++ )
1008     {
1009         m_dirs.Insert(wxT(".."), 0u);
1010     }
1011
1012     if ( format == wxPATH_UNIX || format == wxPATH_DOS )
1013     {
1014         // a directory made relative with respect to itself is '.' under Unix
1015         // and DOS, by definition (but we don't have to insert "./" for the
1016         // files)
1017         if ( m_dirs.IsEmpty() && IsDir() )
1018         {
1019             m_dirs.Add(_T('.'));
1020         }
1021     }
1022
1023     m_relative = TRUE;
1024
1025     // we were modified
1026     return TRUE;
1027 }
1028
1029 // ----------------------------------------------------------------------------
1030 // filename kind tests
1031 // ----------------------------------------------------------------------------
1032
1033 bool wxFileName::SameAs(const wxFileName &filepath, wxPathFormat format)
1034 {
1035     wxFileName fn1 = *this,
1036                fn2 = filepath;
1037
1038     // get cwd only once - small time saving
1039     wxString cwd = wxGetCwd();
1040     fn1.Normalize(wxPATH_NORM_ALL, cwd, format);
1041     fn2.Normalize(wxPATH_NORM_ALL, cwd, format);
1042
1043     if ( fn1.GetFullPath() == fn2.GetFullPath() )
1044         return TRUE;
1045
1046     // TODO: compare inodes for Unix, this works even when filenames are
1047     //       different but files are the same (symlinks) (VZ)
1048
1049     return FALSE;
1050 }
1051
1052 /* static */
1053 bool wxFileName::IsCaseSensitive( wxPathFormat format )
1054 {
1055     // only Unix filenames are truely case-sensitive
1056     return GetFormat(format) == wxPATH_UNIX;
1057 }
1058
1059 /* static */
1060 wxString wxFileName::GetVolumeSeparator(wxPathFormat format)
1061 {
1062     wxString sepVol;
1063
1064     if ( (GetFormat(format) == wxPATH_DOS) ||
1065          (GetFormat(format) == wxPATH_VMS) )
1066     {
1067         sepVol = wxFILE_SEP_DSK;
1068     }
1069     //else: leave empty
1070
1071     return sepVol;
1072 }
1073
1074 /* static */
1075 wxString wxFileName::GetPathSeparators(wxPathFormat format)
1076 {
1077     wxString seps;
1078     switch ( GetFormat(format) )
1079     {
1080         case wxPATH_DOS:
1081             // accept both as native APIs do but put the native one first as
1082             // this is the one we use in GetFullPath()
1083             seps << wxFILE_SEP_PATH_DOS << wxFILE_SEP_PATH_UNIX;
1084             break;
1085
1086         default:
1087             wxFAIL_MSG( _T("unknown wxPATH_XXX style") );
1088             // fall through
1089
1090         case wxPATH_UNIX:
1091             seps = wxFILE_SEP_PATH_UNIX;
1092             break;
1093
1094         case wxPATH_MAC:
1095             seps = wxFILE_SEP_PATH_MAC;
1096             break;
1097
1098         case wxPATH_VMS:
1099             seps = wxFILE_SEP_PATH_VMS;
1100             break;
1101     }
1102
1103     return seps;
1104 }
1105
1106 /* static */
1107 bool wxFileName::IsPathSeparator(wxChar ch, wxPathFormat format)
1108 {
1109     // wxString::Find() doesn't work as expected with NUL - it will always find
1110     // it, so it is almost surely a bug if this function is called with NUL arg
1111     wxASSERT_MSG( ch != _T('\0'), _T("shouldn't be called with NUL") );
1112
1113     return GetPathSeparators(format).Find(ch) != wxNOT_FOUND;
1114 }
1115
1116 // ----------------------------------------------------------------------------
1117 // path components manipulation
1118 // ----------------------------------------------------------------------------
1119
1120 void wxFileName::AppendDir( const wxString &dir )
1121 {
1122     m_dirs.Add( dir );
1123 }
1124
1125 void wxFileName::PrependDir( const wxString &dir )
1126 {
1127     m_dirs.Insert( dir, 0 );
1128 }
1129
1130 void wxFileName::InsertDir( int before, const wxString &dir )
1131 {
1132     m_dirs.Insert( dir, before );
1133 }
1134
1135 void wxFileName::RemoveDir( int pos )
1136 {
1137     m_dirs.Remove( (size_t)pos );
1138 }
1139
1140 // ----------------------------------------------------------------------------
1141 // accessors
1142 // ----------------------------------------------------------------------------
1143
1144 void wxFileName::SetFullName(const wxString& fullname)
1145 {
1146     SplitPath(fullname, NULL /* no path */, &m_name, &m_ext);
1147 }
1148
1149 wxString wxFileName::GetFullName() const
1150 {
1151     wxString fullname = m_name;
1152     if ( !m_ext.empty() )
1153     {
1154         fullname << wxFILE_SEP_EXT << m_ext;
1155     }
1156
1157     return fullname;
1158 }
1159
1160 wxString wxFileName::GetPath( int flags, wxPathFormat format ) const
1161 {
1162     format = GetFormat( format );
1163
1164     wxString fullpath;
1165
1166     // return the volume with the path as well if requested
1167     if ( flags & wxPATH_GET_VOLUME )
1168     {
1169         fullpath += wxGetVolumeString(GetVolume(), format);
1170     }
1171
1172     // the leading character
1173     switch ( format )
1174     {
1175         case wxPATH_MAC:
1176             if ( m_relative )
1177                 fullpath += wxFILE_SEP_PATH_MAC;
1178             break;
1179
1180         case wxPATH_DOS:
1181             if (!m_relative)
1182                 fullpath += wxFILE_SEP_PATH_DOS;
1183             break;
1184
1185         default:
1186             wxFAIL_MSG( _T("unknown path format") );
1187             // fall through
1188
1189         case wxPATH_UNIX:
1190             if ( !m_relative )
1191             {
1192                 // normally the absolute file names starts with a slash with
1193                 // one exception: file names like "~/foo.bar" don't have it
1194                 if ( m_dirs.IsEmpty() || m_dirs[0u] != _T('~') )
1195                 {
1196                     fullpath += wxFILE_SEP_PATH_UNIX;
1197                 }
1198             }
1199             break;
1200
1201         case wxPATH_VMS:
1202             // no leading character here but use this place to unset
1203             // wxPATH_GET_SEPARATOR flag: under VMS it doesn't make sense as,
1204             // if I understand correctly, there should never be a dot before
1205             // the closing bracket
1206             flags &= ~wxPATH_GET_SEPARATOR;
1207     }
1208
1209     // then concatenate all the path components using the path separator
1210     size_t dirCount = m_dirs.GetCount();
1211     if ( dirCount )
1212     {
1213         if ( format == wxPATH_VMS )
1214         {
1215             fullpath += wxT('[');
1216         }
1217
1218         for ( size_t i = 0; i < dirCount; i++ )
1219         {
1220             switch (format)
1221             {
1222                 case wxPATH_MAC:
1223                     if ( m_dirs[i] == wxT(".") )
1224                     {
1225                         // skip appending ':', this shouldn't be done in this
1226                         // case as "::" is interpreted as ".." under Unix
1227                         continue;
1228                     }
1229
1230                     // convert back from ".." to nothing
1231                     if ( m_dirs[i] != wxT("..") )
1232                          fullpath += m_dirs[i];
1233                     break;
1234
1235                 default:
1236                     wxFAIL_MSG( wxT("unexpected path format") );
1237                     // still fall through
1238
1239                 case wxPATH_DOS:
1240                 case wxPATH_UNIX:
1241                     fullpath += m_dirs[i];
1242                     break;
1243
1244                 case wxPATH_VMS:
1245                     // TODO: What to do with ".." under VMS
1246
1247                     // convert back from ".." to nothing
1248                     if ( m_dirs[i] != wxT("..") )
1249                         fullpath += m_dirs[i];
1250                     break;
1251             }
1252
1253             if ( (flags & wxPATH_GET_SEPARATOR) || (i != dirCount - 1) )
1254                 fullpath += GetPathSeparator(format);
1255         }
1256
1257         if ( format == wxPATH_VMS )
1258         {
1259             fullpath += wxT(']');
1260         }
1261     }
1262
1263     return fullpath;
1264 }
1265
1266 wxString wxFileName::GetFullPath( wxPathFormat format ) const
1267 {
1268     // we already have a function to get the path
1269     wxString fullpath = GetPath(wxPATH_GET_VOLUME | wxPATH_GET_SEPARATOR,
1270                                 format);
1271
1272     // now just add the file name and extension to it
1273     fullpath += GetFullName();
1274
1275     return fullpath;
1276 }
1277
1278 // Return the short form of the path (returns identity on non-Windows platforms)
1279 wxString wxFileName::GetShortPath() const
1280 {
1281 #if defined(__WXMSW__) && defined(__WIN32__) && !defined(__WXMICROWIN__)
1282     wxString path(GetFullPath());
1283     wxString pathOut;
1284     DWORD sz = ::GetShortPathName(path, NULL, 0);
1285     bool ok = sz != 0;
1286     if ( ok )
1287     {
1288         ok = ::GetShortPathName
1289                (
1290                 path,
1291                 pathOut.GetWriteBuf(sz),
1292                 sz
1293                ) != 0;
1294         pathOut.UngetWriteBuf();
1295     }
1296     if (ok)
1297         return pathOut;
1298
1299     return path;
1300 #else
1301     return GetFullPath();
1302 #endif
1303 }
1304
1305 // Return the long form of the path (returns identity on non-Windows platforms)
1306 wxString wxFileName::GetLongPath() const
1307 {
1308     wxString pathOut,
1309              path = GetFullPath();
1310
1311 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
1312     bool success = FALSE;
1313
1314 #if wxUSE_DYNAMIC_LOADER
1315     typedef DWORD (WINAPI *GET_LONG_PATH_NAME)(const wxChar *, wxChar *, DWORD);
1316
1317     static bool s_triedToLoad = FALSE;
1318
1319     if ( !s_triedToLoad )
1320     {
1321         // suppress the errors about missing GetLongPathName[AW]
1322         wxLogNull noLog;
1323
1324         s_triedToLoad = TRUE;
1325         wxDynamicLibrary dllKernel(_T("kernel32"));
1326         if ( dllKernel.IsLoaded() )
1327         {
1328             // may succeed or fail depending on the Windows version
1329             static GET_LONG_PATH_NAME s_pfnGetLongPathName = NULL;
1330 #ifdef _UNICODE
1331             s_pfnGetLongPathName = (GET_LONG_PATH_NAME) dllKernel.GetSymbol(_T("GetLongPathNameW"));
1332 #else
1333             s_pfnGetLongPathName = (GET_LONG_PATH_NAME) dllKernel.GetSymbol(_T("GetLongPathNameA"));
1334 #endif
1335
1336             if ( s_pfnGetLongPathName )
1337             {
1338                 DWORD dwSize = (*s_pfnGetLongPathName)(path, NULL, 0);
1339                 bool ok = dwSize > 0;
1340
1341                 if ( ok )
1342                 {
1343                     DWORD sz = (*s_pfnGetLongPathName)(path, NULL, 0);
1344                     ok = sz != 0;
1345                     if ( ok )
1346                     {
1347                         ok = (*s_pfnGetLongPathName)
1348                                 (
1349                                 path,
1350                                 pathOut.GetWriteBuf(sz),
1351                                 sz
1352                                 ) != 0;
1353                         pathOut.UngetWriteBuf();
1354
1355                         success = TRUE;
1356                     }
1357                 }
1358             }
1359         }
1360     }
1361
1362     if (success)
1363         return pathOut;
1364 #endif // wxUSE_DYNAMIC_LOADER
1365
1366     if (!success)
1367     {
1368         // The OS didn't support GetLongPathName, or some other error.
1369         // We need to call FindFirstFile on each component in turn.
1370
1371         WIN32_FIND_DATA findFileData;
1372         HANDLE hFind;
1373         pathOut = wxEmptyString;
1374
1375         wxArrayString dirs = GetDirs();
1376         dirs.Add(GetFullName());
1377
1378         wxString tmpPath;
1379
1380         size_t count = dirs.GetCount();
1381         for ( size_t i = 0; i < count; i++ )
1382         {
1383             // We're using pathOut to collect the long-name path, but using a
1384             // temporary for appending the last path component which may be
1385             // short-name
1386             tmpPath = pathOut + dirs[i];
1387
1388             if ( tmpPath.empty() )
1389                 continue;
1390
1391             if ( tmpPath.Last() == wxT(':') )
1392             {
1393                 // Can't pass a drive and root dir to FindFirstFile,
1394                 // so continue to next dir
1395                 tmpPath += wxFILE_SEP_PATH;
1396                 pathOut = tmpPath;
1397                 continue;
1398             }
1399
1400             hFind = ::FindFirstFile(tmpPath, &findFileData);
1401             if (hFind == INVALID_HANDLE_VALUE)
1402             {
1403                 // Error: return immediately with the original path
1404                 return path;
1405             }
1406
1407             pathOut += findFileData.cFileName;
1408             if ( (i < (count-1)) )
1409                 pathOut += wxFILE_SEP_PATH;
1410
1411             ::FindClose(hFind);
1412         }
1413     }
1414 #else // !Win32
1415     pathOut = path;
1416 #endif // Win32/!Win32
1417
1418     return pathOut;
1419 }
1420
1421 wxPathFormat wxFileName::GetFormat( wxPathFormat format )
1422 {
1423     if (format == wxPATH_NATIVE)
1424     {
1425 #if defined(__WXMSW__) || defined(__WXPM__) || defined(__DOS__)
1426         format = wxPATH_DOS;
1427 #elif defined(__WXMAC__) && !defined(__DARWIN__)
1428         format = wxPATH_MAC;
1429 #elif defined(__VMS)
1430         format = wxPATH_VMS;
1431 #else
1432         format = wxPATH_UNIX;
1433 #endif
1434     }
1435     return format;
1436 }
1437
1438 // ----------------------------------------------------------------------------
1439 // path splitting function
1440 // ----------------------------------------------------------------------------
1441
1442 /* static */
1443 void wxFileName::SplitPath(const wxString& fullpathWithVolume,
1444                            wxString *pstrVolume,
1445                            wxString *pstrPath,
1446                            wxString *pstrName,
1447                            wxString *pstrExt,
1448                            wxPathFormat format)
1449 {
1450     format = GetFormat(format);
1451
1452     wxString fullpath = fullpathWithVolume;
1453
1454     // under VMS the end of the path is ']', not the path separator used to
1455     // separate the components
1456     wxString sepPath = format == wxPATH_VMS ? wxString(_T(']'))
1457                                             : GetPathSeparators(format);
1458
1459     // special Windows UNC paths hack: transform \\share\path into share:path
1460     if ( format == wxPATH_DOS )
1461     {
1462         if ( fullpath.length() >= 4 &&
1463                 fullpath[0u] == wxFILE_SEP_PATH_DOS &&
1464                     fullpath[1u] == wxFILE_SEP_PATH_DOS )
1465         {
1466             fullpath.erase(0, 2);
1467
1468             size_t posFirstSlash = fullpath.find_first_of(sepPath);
1469             if ( posFirstSlash != wxString::npos )
1470             {
1471                 fullpath[posFirstSlash] = wxFILE_SEP_DSK;
1472
1473                 // UNC paths are always absolute, right? (FIXME)
1474                 fullpath.insert(posFirstSlash + 1, wxFILE_SEP_PATH_DOS);
1475             }
1476         }
1477     }
1478
1479     // We separate the volume here
1480     if ( format == wxPATH_DOS || format == wxPATH_VMS )
1481     {
1482         wxString sepVol = GetVolumeSeparator(format);
1483
1484         size_t posFirstColon = fullpath.find_first_of(sepVol);
1485         if ( posFirstColon != wxString::npos )
1486         {
1487             if ( pstrVolume )
1488             {
1489                 *pstrVolume = fullpath.Left(posFirstColon);
1490             }
1491
1492             // remove the volume name and the separator from the full path
1493             fullpath.erase(0, posFirstColon + sepVol.length());
1494         }
1495     }
1496
1497     // find the positions of the last dot and last path separator in the path
1498     size_t posLastDot = fullpath.find_last_of(wxFILE_SEP_EXT);
1499     size_t posLastSlash = fullpath.find_last_of(sepPath);
1500
1501     if ( (posLastDot != wxString::npos) &&
1502             ((format == wxPATH_UNIX) || (format == wxPATH_VMS)) )
1503     {
1504         if ( (posLastDot == 0) ||
1505              (fullpath[posLastDot - 1] == sepPath[0u] ) )
1506         {
1507             // under Unix and VMS, dot may be (and commonly is) the first
1508             // character of the filename, don't treat the entire filename as
1509             // extension in this case
1510             posLastDot = wxString::npos;
1511         }
1512     }
1513
1514     // if we do have a dot and a slash, check that the dot is in the name part
1515     if ( (posLastDot != wxString::npos) &&
1516          (posLastSlash != wxString::npos) &&
1517          (posLastDot < posLastSlash) )
1518     {
1519         // the dot is part of the path, not the start of the extension
1520         posLastDot = wxString::npos;
1521     }
1522
1523     // now fill in the variables provided by user
1524     if ( pstrPath )
1525     {
1526         if ( posLastSlash == wxString::npos )
1527         {
1528             // no path at all
1529             pstrPath->Empty();
1530         }
1531         else
1532         {
1533             // take everything up to the path separator but take care to make
1534             // the path equal to something like '/', not empty, for the files
1535             // immediately under root directory
1536             size_t len = posLastSlash;
1537
1538             // this rule does not apply to mac since we do not start with colons (sep)
1539             // except for relative paths
1540             if ( !len && format != wxPATH_MAC)
1541                 len++;
1542
1543             *pstrPath = fullpath.Left(len);
1544
1545             // special VMS hack: remove the initial bracket
1546             if ( format == wxPATH_VMS )
1547             {
1548                 if ( (*pstrPath)[0u] == _T('[') )
1549                     pstrPath->erase(0, 1);
1550             }
1551         }
1552     }
1553
1554     if ( pstrName )
1555     {
1556         // take all characters starting from the one after the last slash and
1557         // up to, but excluding, the last dot
1558         size_t nStart = posLastSlash == wxString::npos ? 0 : posLastSlash + 1;
1559         size_t count;
1560         if ( posLastDot == wxString::npos )
1561         {
1562             // take all until the end
1563             count = wxString::npos;
1564         }
1565         else if ( posLastSlash == wxString::npos )
1566         {
1567             count = posLastDot;
1568         }
1569         else // have both dot and slash
1570         {
1571             count = posLastDot - posLastSlash - 1;
1572         }
1573
1574         *pstrName = fullpath.Mid(nStart, count);
1575     }
1576
1577     if ( pstrExt )
1578     {
1579         if ( posLastDot == wxString::npos )
1580         {
1581             // no extension
1582             pstrExt->Empty();
1583         }
1584         else
1585         {
1586             // take everything after the dot
1587             *pstrExt = fullpath.Mid(posLastDot + 1);
1588         }
1589     }
1590 }
1591
1592 /* static */
1593 void wxFileName::SplitPath(const wxString& fullpath,
1594                            wxString *path,
1595                            wxString *name,
1596                            wxString *ext,
1597                            wxPathFormat format)
1598 {
1599     wxString volume;
1600     SplitPath(fullpath, &volume, path, name, ext, format);
1601
1602     if ( path )
1603     {
1604         path->Prepend(wxGetVolumeString(volume, format));
1605     }
1606 }
1607
1608 // ----------------------------------------------------------------------------
1609 // time functions
1610 // ----------------------------------------------------------------------------
1611
1612 bool wxFileName::SetTimes(const wxDateTime *dtAccess,
1613                           const wxDateTime *dtMod,
1614                           const wxDateTime *dtCreate)
1615 {
1616 #if defined(__UNIX_LIKE__) || (defined(__DOS__) && defined(__WATCOMC__))
1617     if ( !dtAccess && !dtMod )
1618     {
1619         // can't modify the creation time anyhow, don't try
1620         return TRUE;
1621     }
1622
1623     // if dtAccess or dtMod is not specified, use the other one (which must be
1624     // non NULL because of the test above) for both times
1625     utimbuf utm;
1626     utm.actime = dtAccess ? dtAccess->GetTicks() : dtMod->GetTicks();
1627     utm.modtime = dtMod ? dtMod->GetTicks() : dtAccess->GetTicks();
1628     if ( utime(GetFullPath().fn_str(), &utm) == 0 )
1629     {
1630         return TRUE;
1631     }
1632 #elif defined(__WIN32__)
1633     wxFileHandle fh(GetFullPath(), wxFileHandle::Write);
1634     if ( fh.IsOk() )
1635     {
1636         FILETIME ftAccess, ftCreate, ftWrite;
1637
1638         if ( dtCreate )
1639             ConvertWxToFileTime(&ftCreate, *dtCreate);
1640         if ( dtAccess )
1641             ConvertWxToFileTime(&ftAccess, *dtAccess);
1642         if ( dtMod )
1643             ConvertWxToFileTime(&ftWrite, *dtMod);
1644
1645         if ( ::SetFileTime(fh,
1646                            dtCreate ? &ftCreate : NULL,
1647                            dtAccess ? &ftAccess : NULL,
1648                            dtMod ? &ftWrite : NULL) )
1649         {
1650             return TRUE;
1651         }
1652     }
1653 #else // other platform
1654 #endif // platforms
1655
1656     wxLogSysError(_("Failed to modify file times for '%s'"),
1657                   GetFullPath().c_str());
1658
1659     return FALSE;
1660 }
1661
1662 bool wxFileName::Touch()
1663 {
1664 #if defined(__UNIX_LIKE__)
1665     // under Unix touching file is simple: just pass NULL to utime()
1666     if ( utime(GetFullPath().fn_str(), NULL) == 0 )
1667     {
1668         return TRUE;
1669     }
1670
1671     wxLogSysError(_("Failed to touch the file '%s'"), GetFullPath().c_str());
1672
1673     return FALSE;
1674 #else // other platform
1675     wxDateTime dtNow = wxDateTime::Now();
1676
1677     return SetTimes(&dtNow, &dtNow, NULL /* don't change create time */);
1678 #endif // platforms
1679 }
1680
1681 bool wxFileName::GetTimes(wxDateTime *dtAccess,
1682                           wxDateTime *dtMod,
1683                           wxDateTime *dtCreate) const
1684 {
1685 #if defined(__UNIX_LIKE__) || defined(__WXMAC__) || (defined(__DOS__) && defined(__WATCOMC__))
1686     wxStructStat stBuf;
1687     if ( wxStat( GetFullPath().c_str(), &stBuf) == 0 )
1688     {
1689         if ( dtAccess )
1690             dtAccess->Set(stBuf.st_atime);
1691         if ( dtMod )
1692             dtMod->Set(stBuf.st_mtime);
1693         if ( dtCreate )
1694             dtCreate->Set(stBuf.st_ctime);
1695
1696         return TRUE;
1697     }
1698 #elif defined(__WIN32__)
1699     wxFileHandle fh(GetFullPath(), wxFileHandle::Read);
1700     if ( fh.IsOk() )
1701     {
1702         FILETIME ftAccess, ftCreate, ftWrite;
1703
1704         if ( ::GetFileTime(fh,
1705                            dtCreate ? &ftCreate : NULL,
1706                            dtAccess ? &ftAccess : NULL,
1707                            dtMod ? &ftWrite : NULL) )
1708         {
1709             if ( dtCreate )
1710                 ConvertFileTimeToWx(dtCreate, ftCreate);
1711             if ( dtAccess )
1712                 ConvertFileTimeToWx(dtAccess, ftAccess);
1713             if ( dtMod )
1714                 ConvertFileTimeToWx(dtMod, ftWrite);
1715
1716             return TRUE;
1717         }
1718     }
1719 #else // other platform
1720 #endif // platforms
1721
1722     wxLogSysError(_("Failed to retrieve file times for '%s'"),
1723                   GetFullPath().c_str());
1724
1725     return FALSE;
1726 }
1727
1728 #ifdef __WXMAC__
1729
1730 const short kMacExtensionMaxLength = 16 ;
1731 class MacDefaultExtensionRecord
1732 {
1733 public :
1734   MacDefaultExtensionRecord()
1735   {
1736     m_ext[0] = 0 ;
1737     m_type = m_creator = NULL ;
1738   }
1739   MacDefaultExtensionRecord( const MacDefaultExtensionRecord& from )
1740   {
1741     strcpy( m_ext , from.m_ext ) ;
1742     m_type = from.m_type ;
1743     m_creator = from.m_creator ;
1744   }
1745   MacDefaultExtensionRecord( char * extension , OSType type , OSType creator )
1746   {
1747     strncpy( m_ext , extension , kMacExtensionMaxLength ) ;
1748     m_ext[kMacExtensionMaxLength] = 0 ;
1749     m_type = type ;
1750     m_creator = creator ;
1751   }
1752   char m_ext[kMacExtensionMaxLength] ;
1753   OSType m_type ;
1754   OSType m_creator ;
1755 }  ;
1756
1757 #include "wx/dynarray.h"
1758 WX_DECLARE_OBJARRAY(MacDefaultExtensionRecord, MacDefaultExtensionArray) ;
1759
1760 bool gMacDefaultExtensionsInited = false ;
1761
1762 #include "wx/arrimpl.cpp"
1763
1764 WX_DEFINE_EXPORTED_OBJARRAY(MacDefaultExtensionArray) ;
1765
1766 MacDefaultExtensionArray gMacDefaultExtensions ;
1767
1768 static void MacEnsureDefaultExtensionsLoaded()
1769 {
1770   if ( !gMacDefaultExtensionsInited )
1771   {
1772
1773     // load the default extensions
1774     MacDefaultExtensionRecord defaults[1] =
1775     {
1776       MacDefaultExtensionRecord( "txt" , 'TEXT' , 'ttxt' ) ,
1777
1778     } ;
1779     // we could load the pc exchange prefs here too
1780
1781     for ( int i = 0 ; i < WXSIZEOF( defaults ) ; ++i )
1782     {
1783       gMacDefaultExtensions.Add( defaults[i] ) ;
1784     }
1785     gMacDefaultExtensionsInited = true ;
1786   }
1787 }
1788 bool wxFileName::MacSetTypeAndCreator( wxUint32 type , wxUint32 creator )
1789 {
1790   FInfo fndrInfo ;
1791   FSSpec spec ;
1792   wxMacFilename2FSSpec(GetFullPath(),&spec) ;
1793   OSErr err = FSpGetFInfo( &spec , &fndrInfo ) ;
1794   wxCHECK( err == noErr , false ) ;
1795
1796   fndrInfo.fdType = type ;
1797   fndrInfo.fdCreator = creator ;
1798   FSpSetFInfo( &spec , &fndrInfo ) ;
1799   return true ;
1800 }
1801
1802 bool wxFileName::MacGetTypeAndCreator( wxUint32 *type , wxUint32 *creator )
1803 {
1804   FInfo fndrInfo ;
1805   FSSpec spec ;
1806   wxMacFilename2FSSpec(GetFullPath(),&spec) ;
1807   OSErr err = FSpGetFInfo( &spec , &fndrInfo ) ;
1808   wxCHECK( err == noErr , false ) ;
1809
1810   *type = fndrInfo.fdType ;
1811   *creator = fndrInfo.fdCreator ;
1812   return true ;
1813 }
1814
1815 bool wxFileName::MacSetDefaultTypeAndCreator()
1816 {
1817     wxUint32 type , creator ;
1818     if ( wxFileName::MacFindDefaultTypeAndCreator(GetExt() , &type ,
1819       &creator ) )
1820     {
1821         return MacSetTypeAndCreator( type , creator ) ;
1822     }
1823     return false;
1824 }
1825
1826 bool wxFileName::MacFindDefaultTypeAndCreator( const wxString& ext , wxUint32 *type , wxUint32 *creator )
1827 {
1828   MacEnsureDefaultExtensionsLoaded() ;
1829   wxString extl = ext.Lower() ;
1830   for( int i = gMacDefaultExtensions.Count() - 1 ; i >= 0 ; --i )
1831   {
1832     if ( gMacDefaultExtensions.Item(i).m_ext == extl )
1833     {
1834       *type = gMacDefaultExtensions.Item(i).m_type ;
1835       *creator = gMacDefaultExtensions.Item(i).m_creator ;
1836       return true ;
1837     }
1838   }
1839   return false ;
1840 }
1841
1842 void wxFileName::MacRegisterDefaultTypeAndCreator( const wxString& ext , wxUint32 type , wxUint32 creator )
1843 {
1844   MacEnsureDefaultExtensionsLoaded() ;
1845   MacDefaultExtensionRecord rec ;
1846   rec.m_type = type ;
1847   rec.m_creator = creator ;
1848   strncpy( rec.m_ext , ext.Lower().c_str() , kMacExtensionMaxLength ) ;
1849   gMacDefaultExtensions.Add( rec ) ;
1850 }
1851 #endif