src/common/filename.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/filename.cpp
   3 // Purpose:     wxFileName - encapsulates a file path
   4 // Author:      Robert Roebling, Vadim Zeitlin
   5 // Modified by:
   6 // Created:     28.12.2000
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2000 Robert Roebling
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 /*
  13    Here are brief descriptions of the filename formats supported by this class:
  14
  15    wxPATH_UNIX: standard Unix format, used under Darwin as well, absolute file
  16                 names have the form:
  17                 /dir1/dir2/.../dirN/filename, "." and ".." stand for the
  18                 current and parent directory respectively, "~" is parsed as the
  19                 user HOME and "~username" as the HOME of that user
  20
  21    wxPATH_DOS:  DOS/Windows format, absolute file names have the form:
  22                 drive:\dir1\dir2\...\dirN\filename.ext where drive is a single
  23                 letter. "." and ".." as for Unix but no "~".
  24
  25                 There are also UNC names of the form \\share\fullpath
  26
  27    wxPATH_MAC:  Mac OS 8/9 and Mac OS X under CodeWarrior 7 format, absolute file
  28                 names have the form
  29                     volume:dir1:...:dirN:filename
  30                 and the relative file names are either
  31                     :dir1:...:dirN:filename
  32                 or just
  33                     filename
  34                 (although :filename works as well).
  35                 Since the volume is just part of the file path, it is not
  36                 treated like a separate entity as it is done under DOS and
  37                 VMS, it is just treated as another dir.
  38
  39    wxPATH_VMS:  VMS native format, absolute file names have the form
  40                     <device>:[dir1.dir2.dir3]file.txt
  41                 or
  42                     <device>:[000000.dir1.dir2.dir3]file.txt
  43
  44                 the <device> is the physical device (i.e. disk). 000000 is the
  45                 root directory on the device which can be omitted.
  46
  47                 Note that VMS uses different separators unlike Unix:
  48                  : always after the device. If the path does not contain : than
  49                    the default (the device of the current directory) is assumed.
  50                  [ start of directory specyfication
  51                  . separator between directory and subdirectory
  52                  ] between directory and file
  53  */
  54
  55 // ============================================================================
  56 // declarations
  57 // ============================================================================
  58
  59 // ----------------------------------------------------------------------------
  60 // headers
  61 // ----------------------------------------------------------------------------
  62
  63 #ifdef __GNUG__
  64 #pragma implementation "filename.h"
  65 #endif
  66
  67 // For compilers that support precompilation, includes "wx.h".
  68 #include "wx/wxprec.h"
  69
  70 #ifdef __BORLANDC__
  71 #pragma hdrstop
  72 #endif
  73
  74 #ifndef WX_PRECOMP
  75 #include "wx/intl.h"
  76 #include "wx/log.h"
  77 #include "wx/file.h"
  78 #endif
  79
  80 #include "wx/filename.h"
  81 #include "wx/tokenzr.h"
  82 #include "wx/config.h"          // for wxExpandEnvVars
  83 #include "wx/utils.h"
  84 #include "wx/file.h"
  85 #include "wx/dynlib.h"
  86
  87 // For GetShort/LongPathName
  88 #ifdef __WIN32__
  89 #include <windows.h>
  90 #include "wx/msw/winundef.h"
  91 #endif
  92
  93 #if defined(__WXMAC__)
  94   #include  "wx/mac/private.h"  // includes mac headers
  95 #endif
  96
  97 // utime() is POSIX so should normally be available on all Unices
  98 #ifdef __UNIX_LIKE__
  99 #include <sys/types.h>
 100 #include <utime.h>
 101 #include <sys/stat.h>
 102 #include <unistd.h>
 103 #endif
 104
 105 #ifdef __DJGPP__
 106 #include <unistd.h>
 107 #endif
 108
 109 #ifdef __MWERKS__
 110 #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 #ifdef __EMX__
 128 #define MAX_PATH _MAX_PATH
 129 #endif
 130
 131 // ----------------------------------------------------------------------------
 132 // private classes
 133 // ----------------------------------------------------------------------------
 134
 135 // small helper class which opens and closes the file - we use it just to get
 136 // a file handle for the given file name to pass it to some Win32 API function
 137 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
 138
 139 class wxFileHandle
 140 {
 141 public:
 142     enum OpenMode
 143     {
 144         Read,
 145         Write
 146     };
 147
 148     wxFileHandle(const wxString& filename, OpenMode mode)
 149     {
 150         m_hFile = ::CreateFile
 151                     (
 152                      filename,                      // name
 153                      mode == Read ? GENERIC_READ    // access mask
 154                                   : GENERIC_WRITE,
 155                      0,                             // no sharing
 156                      NULL,                          // no secutity attr
 157                      OPEN_EXISTING,                 // creation disposition
 158                      0,                             // no flags
 159                      NULL                           // no template file
 160                     );
 161
 162         if ( m_hFile == INVALID_HANDLE_VALUE )
 163         {
 164             wxLogSysError(_("Failed to open '%s' for %s"),
 165                           filename.c_str(),
 166                           mode == Read ? _("reading") : _("writing"));
 167         }
 168     }
 169
 170     ~wxFileHandle()
 171     {
 172         if ( m_hFile != INVALID_HANDLE_VALUE )
 173         {
 174             if ( !::CloseHandle(m_hFile) )
 175             {
 176                 wxLogSysError(_("Failed to close file handle"));
 177             }
 178         }
 179     }
 180
 181     // return TRUE only if the file could be opened successfully
 182     bool IsOk() const { return m_hFile != INVALID_HANDLE_VALUE; }
 183
 184     // get the handle
 185     operator HANDLE() const { return m_hFile; }
 186
 187 private:
 188     HANDLE m_hFile;
 189 };
 190
 191 #endif // __WIN32__
 192
 193 // ----------------------------------------------------------------------------
 194 // private functions
 195 // ----------------------------------------------------------------------------
 196
 197 #if wxUSE_DATETIME && defined(__WIN32__) && !defined(__WXMICROWIN__)
 198
 199 // convert between wxDateTime and FILETIME which is a 64-bit value representing
 200 // the number of 100-nanosecond intervals since January 1, 1601.
 201
 202 static void ConvertFileTimeToWx(wxDateTime *dt, const FILETIME &ft)
 203 {
 204     FILETIME ftcopy = ft;
 205     FILETIME ftLocal;
 206     if ( !::FileTimeToLocalFileTime(&ftcopy, &ftLocal) )
 207     {
 208         wxLogLastError(_T("FileTimeToLocalFileTime"));
 209     }
 210
 211     SYSTEMTIME st;
 212     if ( !::FileTimeToSystemTime(&ftLocal, &st) )
 213     {
 214         wxLogLastError(_T("FileTimeToSystemTime"));
 215     }
 216
 217     dt->Set(st.wDay, wxDateTime::Month(st.wMonth - 1), st.wYear,
 218             st.wHour, st.wMinute, st.wSecond, st.wMilliseconds);
 219 }
 220
 221 static void ConvertWxToFileTime(FILETIME *ft, const wxDateTime& dt)
 222 {
 223     SYSTEMTIME st;
 224     st.wDay = dt.GetDay();
 225     st.wMonth = dt.GetMonth() + 1;
 226     st.wYear = dt.GetYear();
 227     st.wHour = dt.GetHour();
 228     st.wMinute = dt.GetMinute();
 229     st.wSecond = dt.GetSecond();
 230     st.wMilliseconds = dt.GetMillisecond();
 231
 232     FILETIME ftLocal;
 233     if ( !::SystemTimeToFileTime(&st, &ftLocal) )
 234     {
 235         wxLogLastError(_T("SystemTimeToFileTime"));
 236     }
 237
 238     if ( !::LocalFileTimeToFileTime(&ftLocal, ft) )
 239     {
 240         wxLogLastError(_T("LocalFileTimeToFileTime"));
 241     }
 242 }
 243
 244 #endif // wxUSE_DATETIME && __WIN32__
 245
 246 // return a string with the volume par
 247 static wxString wxGetVolumeString(const wxString& volume, wxPathFormat format)
 248 {
 249     wxString path;
 250
 251     if ( !volume.empty() )
 252     {
 253         format = wxFileName::GetFormat(format);
 254
 255         // Special Windows UNC paths hack, part 2: undo what we did in
 256         // SplitPath() and make an UNC path if we have a drive which is not a
 257         // single letter (hopefully the network shares can't be one letter only
 258         // although I didn't find any authoritative docs on this)
 259         if ( format == wxPATH_DOS && volume.length() > 1 )
 260         {
 261             path << wxFILE_SEP_PATH_DOS << wxFILE_SEP_PATH_DOS << volume;
 262         }
 263         else if  ( format == wxPATH_DOS || format == wxPATH_VMS )
 264         {
 265             path << volume << wxFileName::GetVolumeSeparator(format);
 266         }
 267         // else ignore
 268     }
 269
 270     return path;
 271 }
 272
 273 // ============================================================================
 274 // implementation
 275 // ============================================================================
 276
 277 // ----------------------------------------------------------------------------
 278 // wxFileName construction
 279 // ----------------------------------------------------------------------------
 280
 281 void wxFileName::Assign( const wxFileName &filepath )
 282 {
 283     m_volume = filepath.GetVolume();
 284     m_dirs = filepath.GetDirs();
 285     m_name = filepath.GetName();
 286     m_ext = filepath.GetExt();
 287     m_relative = filepath.m_relative;
 288 }
 289
 290 void wxFileName::Assign(const wxString& volume,
 291                         const wxString& path,
 292                         const wxString& name,
 293                         const wxString& ext,
 294                         wxPathFormat format )
 295 {
 296     SetPath( path, format );
 297
 298     m_volume = volume;
 299     m_ext = ext;
 300     m_name = name;
 301 }
 302
 303 void wxFileName::SetPath( const wxString &path, wxPathFormat format )
 304 {
 305     m_dirs.Clear();
 306
 307     if ( !path.empty() )
 308     {
 309         wxPathFormat my_format = GetFormat( format );
 310         wxString my_path = path;
 311
 312         // 1) Determine if the path is relative or absolute.
 313         wxChar leadingChar = my_path[0u];
 314
 315         switch (my_format)
 316         {
 317             case wxPATH_MAC:
 318                 m_relative = leadingChar == wxT(':');
 319
 320                 // We then remove a leading ":". The reason is in our
 321                 // storage form for relative paths:
 322                 // ":dir:file.txt" actually means "./dir/file.txt" in
 323                 // DOS notation and should get stored as
 324                 // (relative) (dir) (file.txt)
 325                 // "::dir:file.txt" actually means "../dir/file.txt"
 326                 // stored as (relative) (..) (dir) (file.txt)
 327                 // This is important only for the Mac as an empty dir
 328                 // actually means <UP>, whereas under DOS, double
 329                 // slashes can be ignored: "\\\\" is the same as "\\".
 330                 if (m_relative)
 331                     my_path.erase( 0, 1 );
 332                 break;
 333
 334             case wxPATH_VMS:
 335                 // TODO: what is the relative path format here?
 336                 m_relative = FALSE;
 337                 break;
 338
 339             case wxPATH_UNIX:
 340                 // the paths of the form "~" or "~username" are absolute
 341                 m_relative = leadingChar != wxT('/') && leadingChar != _T('~');
 342                 break;
 343
 344             case wxPATH_DOS:
 345                 m_relative = !IsPathSeparator(leadingChar, my_format);
 346                 break;
 347
 348             default:
 349                 wxFAIL_MSG( wxT("error") );
 350                 break;
 351         }
 352
 353         // 2) Break up the path into its members. If the original path
 354         //    was just "/" or "\\", m_dirs will be empty. We know from
 355         //    the m_relative field, if this means "nothing" or "root dir".
 356
 357         wxStringTokenizer tn( my_path, GetPathSeparators(my_format) );
 358
 359         while ( tn.HasMoreTokens() )
 360         {
 361             wxString token = tn.GetNextToken();
 362
 363             // Remove empty token under DOS and Unix, interpret them
 364             // as .. under Mac.
 365             if (token.empty())
 366             {
 367                 if (my_format == wxPATH_MAC)
 368                     m_dirs.Add( wxT("..") );
 369                 // else ignore
 370             }
 371             else
 372             {
 373                m_dirs.Add( token );
 374             }
 375         }
 376     }
 377     else // no path at all
 378     {
 379         m_relative = TRUE;
 380     }
 381 }
 382
 383 void wxFileName::Assign(const wxString& fullpath,
 384                         wxPathFormat format)
 385 {
 386     wxString volume, path, name, ext;
 387     SplitPath(fullpath, &volume, &path, &name, &ext, format);
 388
 389     Assign(volume, path, name, ext, format);
 390 }
 391
 392 void wxFileName::Assign(const wxString& fullpathOrig,
 393                         const wxString& fullname,
 394                         wxPathFormat format)
 395 {
 396     // always recognize fullpath as directory, even if it doesn't end with a
 397     // slash
 398     wxString fullpath = fullpathOrig;
 399     if ( !wxEndsWithPathSeparator(fullpath) )
 400     {
 401         fullpath += GetPathSeparator(format);
 402     }
 403
 404     wxString volume, path, name, ext;
 405
 406     // do some consistency checks in debug mode: the name should be really just
 407     // the filename and the path should be really just a path
 408 #ifdef __WXDEBUG__
 409     wxString pathDummy, nameDummy, extDummy;
 410
 411     SplitPath(fullname, &pathDummy, &name, &ext, format);
 412
 413     wxASSERT_MSG( pathDummy.empty(),
 414                   _T("the file name shouldn't contain the path") );
 415
 416     SplitPath(fullpath, &volume, &path, &nameDummy, &extDummy, format);
 417
 418     wxASSERT_MSG( nameDummy.empty() && extDummy.empty(),
 419                   _T("the path shouldn't contain file name nor extension") );
 420
 421 #else // !__WXDEBUG__
 422     SplitPath(fullname, NULL /* no path */, &name, &ext, format);
 423     SplitPath(fullpath, &volume, &path, NULL, NULL, format);
 424 #endif // __WXDEBUG__/!__WXDEBUG__
 425
 426     Assign(volume, path, name, ext, format);
 427 }
 428
 429 void wxFileName::AssignDir(const wxString& dir, wxPathFormat format)
 430 {
 431     Assign(dir, _T(""), format);
 432 }
 433
 434 void wxFileName::Clear()
 435 {
 436     m_dirs.Clear();
 437
 438     m_volume =
 439     m_name =
 440     m_ext = wxEmptyString;
 441
 442     // we don't have any absolute path for now
 443     m_relative = TRUE;
 444 }
 445
 446 /* static */
 447 wxFileName wxFileName::FileName(const wxString& file)
 448 {
 449     return wxFileName(file);
 450 }
 451
 452 /* static */
 453 wxFileName wxFileName::DirName(const wxString& dir)
 454 {
 455     wxFileName fn;
 456     fn.AssignDir(dir);
 457     return fn;
 458 }
 459
 460 // ----------------------------------------------------------------------------
 461 // existence tests
 462 // ----------------------------------------------------------------------------
 463
 464 bool wxFileName::FileExists() const
 465 {
 466     return wxFileName::FileExists( GetFullPath() );
 467 }
 468
 469 bool wxFileName::FileExists( const wxString &file )
 470 {
 471     return ::wxFileExists( file );
 472 }
 473
 474 bool wxFileName::DirExists() const
 475 {
 476     return wxFileName::DirExists( GetFullPath() );
 477 }
 478
 479 bool wxFileName::DirExists( const wxString &dir )
 480 {
 481     return ::wxDirExists( dir );
 482 }
 483
 484 // ----------------------------------------------------------------------------
 485 // CWD and HOME stuff
 486 // ----------------------------------------------------------------------------
 487
 488 void wxFileName::AssignCwd(const wxString& volume)
 489 {
 490     AssignDir(wxFileName::GetCwd(volume));
 491 }
 492
 493 /* static */
 494 wxString wxFileName::GetCwd(const wxString& volume)
 495 {
 496     // if we have the volume, we must get the current directory on this drive
 497     // and to do this we have to chdir to this volume - at least under Windows,
 498     // I don't know how to get the current drive on another volume elsewhere
 499     // (TODO)
 500     wxString cwdOld;
 501     if ( !volume.empty() )
 502     {
 503         cwdOld = wxGetCwd();
 504         SetCwd(volume + GetVolumeSeparator());
 505     }
 506
 507     wxString cwd = ::wxGetCwd();
 508
 509     if ( !volume.empty() )
 510     {
 511         SetCwd(cwdOld);
 512     }
 513
 514     return cwd;
 515 }
 516
 517 bool wxFileName::SetCwd()
 518 {
 519     return wxFileName::SetCwd( GetFullPath() );
 520 }
 521
 522 bool wxFileName::SetCwd( const wxString &cwd )
 523 {
 524     return ::wxSetWorkingDirectory( cwd );
 525 }
 526
 527 void wxFileName::AssignHomeDir()
 528 {
 529     AssignDir(wxFileName::GetHomeDir());
 530 }
 531
 532 wxString wxFileName::GetHomeDir()
 533 {
 534     return ::wxGetHomeDir();
 535 }
 536
 537 void wxFileName::AssignTempFileName(const wxString& prefix, wxFile *fileTemp)
 538 {
 539     wxString tempname = CreateTempFileName(prefix, fileTemp);
 540     if ( tempname.empty() )
 541     {
 542         // error, failed to get temp file name
 543         Clear();
 544     }
 545     else // ok
 546     {
 547         Assign(tempname);
 548     }
 549 }
 550
 551 /* static */
 552 wxString
 553 wxFileName::CreateTempFileName(const wxString& prefix, wxFile *fileTemp)
 554 {
 555     wxString path, dir, name;
 556
 557     // use the directory specified by the prefix
 558     SplitPath(prefix, &dir, &name, NULL /* extension */);
 559
 560 #if defined(__WINDOWS__) && !defined(__WXMICROWIN__)
 561
 562 #ifdef __WIN32__
 563     if ( dir.empty() )
 564     {
 565         if ( !::GetTempPath(MAX_PATH, wxStringBuffer(dir, MAX_PATH + 1)) )
 566         {
 567             wxLogLastError(_T("GetTempPath"));
 568         }
 569
 570         if ( dir.empty() )
 571         {
 572             // GetTempFileName() fails if we pass it an empty string
 573             dir = _T('.');
 574         }
 575     }
 576     else // we have a dir to create the file in
 577     {
 578         // ensure we use only the back slashes as GetTempFileName(), unlike all
 579         // the other APIs, is picky and doesn't accept the forward ones
 580         dir.Replace(_T("/"), _T("\\"));
 581     }
 582
 583     if ( !::GetTempFileName(dir, name, 0, wxStringBuffer(path, MAX_PATH + 1)) )
 584     {
 585         wxLogLastError(_T("GetTempFileName"));
 586
 587         path.clear();
 588     }
 589 #else // Win16
 590     if ( !::GetTempFileName(NULL, prefix, 0, wxStringBuffer(path, 1025)) )
 591     {
 592         path.clear();
 593     }
 594 #endif // Win32/16
 595
 596 #elif defined(__WXPM__)
 597     // for now just create a file
 598     //
 599     // future enhancements can be to set some extended attributes for file
 600     // systems OS/2 supports that have them (HPFS, FAT32) and security
 601     // (HPFS386)
 602     static const wxChar *szMktempSuffix = wxT("XXX");
 603     path << dir << _T('/') << name << szMktempSuffix;
 604
 605     // Temporarily remove - MN
 606     #ifndef __WATCOMC__
 607         ::DosCreateDir(wxStringBuffer(path, MAX_PATH), NULL);
 608     #endif
 609
 610 #else // !Windows, !OS/2
 611     if ( dir.empty() )
 612     {
 613 #if defined(__WXMAC__) && !defined(__DARWIN__)
 614         dir = wxMacFindFolder(  (short) kOnSystemDisk, kTemporaryFolderType, kCreateFolder ) ;
 615 #else // !Mac
 616         dir = wxGetenv(_T("TMP"));
 617         if ( dir.empty() )
 618         {
 619             dir = wxGetenv(_T("TEMP"));
 620         }
 621
 622         if ( dir.empty() )
 623         {
 624             // default
 625             #ifdef __DOS__
 626                 dir = _T(".");
 627             #else
 628                 dir = _T("/tmp");
 629             #endif
 630         }
 631 #endif // Mac/!Mac
 632     }
 633
 634     path = dir;
 635
 636     if ( !wxEndsWithPathSeparator(dir) &&
 637             (name.empty() || !wxIsPathSeparator(name[0u])) )
 638     {
 639         path += wxFILE_SEP_PATH;
 640     }
 641
 642     path += name;
 643
 644 #if defined(HAVE_MKSTEMP)
 645     // scratch space for mkstemp()
 646     path += _T("XXXXXX");
 647
 648     // we need to copy the path to the buffer in which mkstemp() can modify it
 649     wxCharBuffer buf( wxConvFile.cWX2MB( path ) );
 650
 651     // cast is safe because the string length doesn't change
 652     int fdTemp = mkstemp( (char*)(const char*) buf );
 653     if ( fdTemp == -1 )
 654     {
 655         // this might be not necessary as mkstemp() on most systems should have
 656         // already done it but it doesn't hurt neither...
 657         path.clear();
 658     }
 659     else // mkstemp() succeeded
 660     {
 661         path = wxConvFile.cMB2WX( (const char*) buf );
 662
 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     wxCharBuffer buf = wxConvFile.cWX2MB( path );
 680     if ( !mktemp( (const char*) buf ) )
 681     {
 682         path.clear();
 683     }
 684     else
 685     {
 686         path = wxConvFile.cMB2WX( (const char*) buf );
 687     }
 688 #else // !HAVE_MKTEMP (includes __DOS__)
 689     // generate the unique file name ourselves
 690     #ifndef __DOS__
 691     path << (unsigned int)getpid();
 692     #endif
 693
 694     wxString pathTry;
 695
 696     static const size_t numTries = 1000;
 697     for ( size_t n = 0; n < numTries; n++ )
 698     {
 699         // 3 hex digits is enough for numTries == 1000 < 4096
 700         pathTry = path + wxString::Format(_T("%.03x"), n);
 701         if ( !wxFile::Exists(pathTry) )
 702         {
 703             break;
 704         }
 705
 706         pathTry.clear();
 707     }
 708
 709     path = pathTry;
 710 #endif // HAVE_MKTEMP/!HAVE_MKTEMP
 711
 712     if ( !path.empty() )
 713     {
 714     }
 715 #endif // HAVE_MKSTEMP/!HAVE_MKSTEMP
 716
 717 #endif // Windows/!Windows
 718
 719     if ( path.empty() )
 720     {
 721         wxLogSysError(_("Failed to create a temporary file name"));
 722     }
 723     else if ( fileTemp && !fileTemp->IsOpened() )
 724     {
 725         // open the file - of course, there is a race condition here, this is
 726         // why we always prefer using mkstemp()...
 727         //
 728         // NB: GetTempFileName() under Windows creates the file, so using
 729         //     write_excl there would fail
 730         if ( !fileTemp->Open(path,
 731 #if defined(__WINDOWS__) && !defined(__WXMICROWIN__)
 732                              wxFile::write,
 733 #else
 734                              wxFile::write_excl,
 735 #endif
 736                              wxS_IRUSR | wxS_IWUSR) )
 737         {
 738             // FIXME: If !ok here should we loop and try again with another
 739             //        file name?  That is the standard recourse if open(O_EXCL)
 740             //        fails, though of course it should be protected against
 741             //        possible infinite looping too.
 742
 743             wxLogError(_("Failed to open temporary file."));
 744
 745             path.clear();
 746         }
 747     }
 748
 749     return path;
 750 }
 751
 752 // ----------------------------------------------------------------------------
 753 // directory operations
 754 // ----------------------------------------------------------------------------
 755
 756 bool wxFileName::Mkdir( int perm, int flags )
 757 {
 758     return wxFileName::Mkdir( GetFullPath(), perm, flags );
 759 }
 760
 761 bool wxFileName::Mkdir( const wxString& dir, int perm, int flags )
 762 {
 763     if ( flags & wxPATH_MKDIR_FULL )
 764     {
 765         // split the path in components
 766         wxFileName filename;
 767         filename.AssignDir(dir);
 768
 769         wxString currPath;
 770         if ( filename.HasVolume())
 771         {
 772             currPath << wxGetVolumeString(filename.GetVolume(), wxPATH_NATIVE);
 773         }
 774
 775         wxArrayString dirs = filename.GetDirs();
 776         size_t count = dirs.GetCount();
 777         for ( size_t i = 0; i < count; i++ )
 778         {
 779             if ( i > 0 ||
 780 #if defined(__WXMAC__) && !defined(__DARWIN__)
 781                         // relative pathnames are exactely the other way round under mac...
 782                 !filename.IsAbsolute()
 783 #else
 784                 filename.IsAbsolute()
 785 #endif
 786             )
 787                 currPath += wxFILE_SEP_PATH;
 788             currPath += dirs[i];
 789
 790             if (!DirExists(currPath))
 791             {
 792                 if (!wxMkdir(currPath, perm))
 793                 {
 794                     // no need to try creating further directories
 795                     return FALSE;
 796                 }
 797             }
 798         }
 799
 800         return TRUE;
 801
 802     }
 803
 804     return ::wxMkdir( dir, perm );
 805 }
 806
 807 bool wxFileName::Rmdir()
 808 {
 809     return wxFileName::Rmdir( GetFullPath() );
 810 }
 811
 812 bool wxFileName::Rmdir( const wxString &dir )
 813 {
 814     return ::wxRmdir( dir );
 815 }
 816
 817 // ----------------------------------------------------------------------------
 818 // path normalization
 819 // ----------------------------------------------------------------------------
 820
 821 bool wxFileName::Normalize(int flags,
 822                            const wxString& cwd,
 823                            wxPathFormat format)
 824 {
 825     // the existing path components
 826     wxArrayString dirs = GetDirs();
 827
 828     // the path to prepend in front to make the path absolute
 829     wxFileName curDir;
 830
 831     format = GetFormat(format);
 832
 833     // make the path absolute
 834     if ( (flags & wxPATH_NORM_ABSOLUTE) && !IsAbsolute(format) )
 835     {
 836         if ( cwd.empty() )
 837         {
 838             curDir.AssignCwd(GetVolume());
 839         }
 840         else // cwd provided
 841         {
 842             curDir.AssignDir(cwd);
 843         }
 844
 845         // the path may be not absolute because it doesn't have the volume name
 846         // but in this case we shouldn't modify the directory components of it
 847         // but just set the current volume
 848         if ( !HasVolume() && curDir.HasVolume() )
 849         {
 850             SetVolume(curDir.GetVolume());
 851
 852             if ( !m_relative )
 853             {
 854                 // yes, it was the case - we don't need curDir then
 855                 curDir.Clear();
 856             }
 857         }
 858     }
 859
 860     // handle ~ stuff under Unix only
 861     if ( (format == wxPATH_UNIX) && (flags & wxPATH_NORM_TILDE) )
 862     {
 863         if ( !dirs.IsEmpty() )
 864         {
 865             wxString dir = dirs[0u];
 866             if ( !dir.empty() && dir[0u] == _T('~') )
 867             {
 868                 curDir.AssignDir(wxGetUserHome(dir.c_str() + 1));
 869
 870                 dirs.RemoveAt(0u);
 871             }
 872         }
 873     }
 874
 875     // transform relative path into abs one
 876     if ( curDir.IsOk() )
 877     {
 878         wxArrayString dirsNew = curDir.GetDirs();
 879         size_t count = dirs.GetCount();
 880         for ( size_t n = 0; n < count; n++ )
 881         {
 882             dirsNew.Add(dirs[n]);
 883         }
 884
 885         dirs = dirsNew;
 886     }
 887
 888     // now deal with ".", ".." and the rest
 889     m_dirs.Empty();
 890     size_t count = dirs.GetCount();
 891     for ( size_t n = 0; n < count; n++ )
 892     {
 893         wxString dir = dirs[n];
 894
 895         if ( flags & wxPATH_NORM_DOTS )
 896         {
 897             if ( dir == wxT(".") )
 898             {
 899                 // just ignore
 900                 continue;
 901             }
 902
 903             if ( dir == wxT("..") )
 904             {
 905                 if ( m_dirs.IsEmpty() )
 906                 {
 907                     wxLogError(_("The path '%s' contains too many \"..\"!"),
 908                                GetFullPath().c_str());
 909                     return FALSE;
 910                 }
 911
 912                 m_dirs.RemoveAt(m_dirs.GetCount() - 1);
 913                 continue;
 914             }
 915         }
 916
 917         if ( flags & wxPATH_NORM_ENV_VARS )
 918         {
 919             dir = wxExpandEnvVars(dir);
 920         }
 921
 922         if ( (flags & wxPATH_NORM_CASE) && !IsCaseSensitive(format) )
 923         {
 924             dir.MakeLower();
 925         }
 926
 927         m_dirs.Add(dir);
 928     }
 929
 930     if ( (flags & wxPATH_NORM_CASE) && !IsCaseSensitive(format) )
 931     {
 932         // VZ: expand env vars here too?
 933
 934         m_name.MakeLower();
 935         m_ext.MakeLower();
 936     }
 937
 938     // we do have the path now
 939     //
 940     // NB: need to do this before (maybe) calling Assign() below
 941     m_relative = FALSE;
 942
 943 #if defined(__WIN32__)
 944     if ( (flags & wxPATH_NORM_LONG) && (format == wxPATH_DOS) )
 945     {
 946         Assign(GetLongPath());
 947     }
 948 #endif // Win32
 949
 950     return TRUE;
 951 }
 952
 953 // ----------------------------------------------------------------------------
 954 // absolute/relative paths
 955 // ----------------------------------------------------------------------------
 956
 957 bool wxFileName::IsAbsolute(wxPathFormat format) const
 958 {
 959     // if our path doesn't start with a path separator, it's not an absolute
 960     // path
 961     if ( m_relative )
 962         return FALSE;
 963
 964     if ( !GetVolumeSeparator(format).empty() )
 965     {
 966         // this format has volumes and an absolute path must have one, it's not
 967         // enough to have the full path to bean absolute file under Windows
 968         if ( GetVolume().empty() )
 969             return FALSE;
 970     }
 971
 972     return TRUE;
 973 }
 974
 975 bool wxFileName::MakeRelativeTo(const wxString& pathBase, wxPathFormat format)
 976 {
 977     wxFileName fnBase(pathBase, format);
 978
 979     // get cwd only once - small time saving
 980     wxString cwd = wxGetCwd();
 981     Normalize(wxPATH_NORM_ALL & ~wxPATH_NORM_CASE, cwd, format);
 982     fnBase.Normalize(wxPATH_NORM_ALL & ~wxPATH_NORM_CASE, cwd, format);
 983
 984     bool withCase = IsCaseSensitive(format);
 985
 986     // we can't do anything if the files live on different volumes
 987     if ( !GetVolume().IsSameAs(fnBase.GetVolume(), withCase) )
 988     {
 989         // nothing done
 990         return FALSE;
 991     }
 992
 993     // same drive, so we don't need our volume
 994     m_volume.clear();
 995
 996     // remove common directories starting at the top
 997     while ( !m_dirs.IsEmpty() && !fnBase.m_dirs.IsEmpty() &&
 998                 m_dirs[0u].IsSameAs(fnBase.m_dirs[0u], withCase) )
 999     {
1000         m_dirs.RemoveAt(0);
1001         fnBase.m_dirs.RemoveAt(0);
1002     }
1003
1004     // add as many ".." as needed
1005     size_t count = fnBase.m_dirs.GetCount();
1006     for ( size_t i = 0; i < count; i++ )
1007     {
1008         m_dirs.Insert(wxT(".."), 0u);
1009     }
1010
1011     if ( format == wxPATH_UNIX || format == wxPATH_DOS )
1012     {
1013         // a directory made relative with respect to itself is '.' under Unix
1014         // and DOS, by definition (but we don't have to insert "./" for the
1015         // files)
1016         if ( m_dirs.IsEmpty() && IsDir() )
1017         {
1018             m_dirs.Add(_T('.'));
1019         }
1020     }
1021
1022     m_relative = TRUE;
1023
1024     // we were modified
1025     return TRUE;
1026 }
1027
1028 // ----------------------------------------------------------------------------
1029 // filename kind tests
1030 // ----------------------------------------------------------------------------
1031
1032 bool wxFileName::SameAs(const wxFileName& filepath, wxPathFormat format) const
1033 {
1034     wxFileName fn1 = *this,
1035                fn2 = filepath;
1036
1037     // get cwd only once - small time saving
1038     wxString cwd = wxGetCwd();
1039     fn1.Normalize(wxPATH_NORM_ALL & ~wxPATH_NORM_CASE, cwd, format);
1040     fn2.Normalize(wxPATH_NORM_ALL & ~wxPATH_NORM_CASE, cwd, format);
1041
1042     if ( fn1.GetFullPath() == fn2.GetFullPath() )
1043         return TRUE;
1044
1045     // TODO: compare inodes for Unix, this works even when filenames are
1046     //       different but files are the same (symlinks) (VZ)
1047
1048     return FALSE;
1049 }
1050
1051 /* static */
1052 bool wxFileName::IsCaseSensitive( wxPathFormat format )
1053 {
1054     // only Unix filenames are truely case-sensitive
1055     return GetFormat(format) == wxPATH_UNIX;
1056 }
1057
1058 /* static */
1059 wxString wxFileName::GetVolumeSeparator(wxPathFormat format)
1060 {
1061     wxString sepVol;
1062
1063     if ( (GetFormat(format) == wxPATH_DOS) ||
1064          (GetFormat(format) == wxPATH_VMS) )
1065     {
1066         sepVol = wxFILE_SEP_DSK;
1067     }
1068     //else: leave empty
1069
1070     return sepVol;
1071 }
1072
1073 /* static */
1074 wxString wxFileName::GetPathSeparators(wxPathFormat format)
1075 {
1076     wxString seps;
1077     switch ( GetFormat(format) )
1078     {
1079         case wxPATH_DOS:
1080             // accept both as native APIs do but put the native one first as
1081             // this is the one we use in GetFullPath()
1082             seps << wxFILE_SEP_PATH_DOS << wxFILE_SEP_PATH_UNIX;
1083             break;
1084
1085         default:
1086             wxFAIL_MSG( _T("unknown wxPATH_XXX style") );
1087             // fall through
1088
1089         case wxPATH_UNIX:
1090             seps = wxFILE_SEP_PATH_UNIX;
1091             break;
1092
1093         case wxPATH_MAC:
1094             seps = wxFILE_SEP_PATH_MAC;
1095             break;
1096
1097         case wxPATH_VMS:
1098             seps = wxFILE_SEP_PATH_VMS;
1099             break;
1100     }
1101
1102     return seps;
1103 }
1104
1105 /* static */
1106 bool wxFileName::IsPathSeparator(wxChar ch, wxPathFormat format)
1107 {
1108     // wxString::Find() doesn't work as expected with NUL - it will always find
1109     // it, so it is almost surely a bug if this function is called with NUL arg
1110     wxASSERT_MSG( ch != _T('\0'), _T("shouldn't be called with NUL") );
1111
1112     return GetPathSeparators(format).Find(ch) != wxNOT_FOUND;
1113 }
1114
1115 // ----------------------------------------------------------------------------
1116 // path components manipulation
1117 // ----------------------------------------------------------------------------
1118
1119 void wxFileName::AppendDir( const wxString &dir )
1120 {
1121     m_dirs.Add( dir );
1122 }
1123
1124 void wxFileName::PrependDir( const wxString &dir )
1125 {
1126     m_dirs.Insert( dir, 0 );
1127 }
1128
1129 void wxFileName::InsertDir( int before, const wxString &dir )
1130 {
1131     m_dirs.Insert( dir, before );
1132 }
1133
1134 void wxFileName::RemoveDir( int pos )
1135 {
1136     m_dirs.Remove( (size_t)pos );
1137 }
1138
1139 // ----------------------------------------------------------------------------
1140 // accessors
1141 // ----------------------------------------------------------------------------
1142
1143 void wxFileName::SetFullName(const wxString& fullname)
1144 {
1145     SplitPath(fullname, NULL /* no path */, &m_name, &m_ext);
1146 }
1147
1148 wxString wxFileName::GetFullName() const
1149 {
1150     wxString fullname = m_name;
1151     if ( !m_ext.empty() )
1152     {
1153         fullname << wxFILE_SEP_EXT << m_ext;
1154     }
1155
1156     return fullname;
1157 }
1158
1159 wxString wxFileName::GetPath( int flags, wxPathFormat format ) const
1160 {
1161     format = GetFormat( format );
1162
1163     wxString fullpath;
1164
1165     // return the volume with the path as well if requested
1166     if ( flags & wxPATH_GET_VOLUME )
1167     {
1168         fullpath += wxGetVolumeString(GetVolume(), format);
1169     }
1170
1171     // the leading character
1172     switch ( format )
1173     {
1174         case wxPATH_MAC:
1175             if ( m_relative )
1176                 fullpath += wxFILE_SEP_PATH_MAC;
1177             break;
1178
1179         case wxPATH_DOS:
1180             if (!m_relative)
1181                 fullpath += wxFILE_SEP_PATH_DOS;
1182             break;
1183
1184         default:
1185             wxFAIL_MSG( _T("unknown path format") );
1186             // fall through
1187
1188         case wxPATH_UNIX:
1189             if ( !m_relative )
1190             {
1191                 // normally the absolute file names starts with a slash with
1192                 // one exception: file names like "~/foo.bar" don't have it
1193                 if ( m_dirs.IsEmpty() || m_dirs[0u] != _T('~') )
1194                 {
1195                     fullpath += wxFILE_SEP_PATH_UNIX;
1196                 }
1197             }
1198             break;
1199
1200         case wxPATH_VMS:
1201             // no leading character here but use this place to unset
1202             // wxPATH_GET_SEPARATOR flag: under VMS it doesn't make sense as,
1203             // if I understand correctly, there should never be a dot before
1204             // the closing bracket
1205             flags &= ~wxPATH_GET_SEPARATOR;
1206     }
1207
1208     // then concatenate all the path components using the path separator
1209     size_t dirCount = m_dirs.GetCount();
1210     if ( dirCount )
1211     {
1212         if ( format == wxPATH_VMS )
1213         {
1214             fullpath += wxT('[');
1215         }
1216
1217         for ( size_t i = 0; i < dirCount; i++ )
1218         {
1219             switch (format)
1220             {
1221                 case wxPATH_MAC:
1222                     if ( m_dirs[i] == wxT(".") )
1223                     {
1224                         // skip appending ':', this shouldn't be done in this
1225                         // case as "::" is interpreted as ".." under Unix
1226                         continue;
1227                     }
1228
1229                     // convert back from ".." to nothing
1230                     if ( m_dirs[i] != wxT("..") )
1231                          fullpath += m_dirs[i];
1232                     break;
1233
1234                 default:
1235                     wxFAIL_MSG( wxT("unexpected path format") );
1236                     // still fall through
1237
1238                 case wxPATH_DOS:
1239                 case wxPATH_UNIX:
1240                     fullpath += m_dirs[i];
1241                     break;
1242
1243                 case wxPATH_VMS:
1244                     // TODO: What to do with ".." under VMS
1245
1246                     // convert back from ".." to nothing
1247                     if ( m_dirs[i] != wxT("..") )
1248                         fullpath += m_dirs[i];
1249                     break;
1250             }
1251
1252             if ( (flags & wxPATH_GET_SEPARATOR) || (i != dirCount - 1) )
1253                 fullpath += GetPathSeparator(format);
1254         }
1255
1256         if ( format == wxPATH_VMS )
1257         {
1258             fullpath += wxT(']');
1259         }
1260     }
1261
1262     return fullpath;
1263 }
1264
1265 wxString wxFileName::GetFullPath( wxPathFormat format ) const
1266 {
1267     // we already have a function to get the path
1268     wxString fullpath = GetPath(wxPATH_GET_VOLUME | wxPATH_GET_SEPARATOR,
1269                                 format);
1270
1271     // now just add the file name and extension to it
1272     fullpath += GetFullName();
1273
1274     return fullpath;
1275 }
1276
1277 // Return the short form of the path (returns identity on non-Windows platforms)
1278 wxString wxFileName::GetShortPath() const
1279 {
1280 #if defined(__WXMSW__) && defined(__WIN32__) && !defined(__WXMICROWIN__)
1281     wxString path(GetFullPath());
1282     wxString pathOut;
1283     DWORD sz = ::GetShortPathName(path, NULL, 0);
1284     bool ok = sz != 0;
1285     if ( ok )
1286     {
1287         ok = ::GetShortPathName
1288                (
1289                 path,
1290                 pathOut.GetWriteBuf(sz),
1291                 sz
1292                ) != 0;
1293         pathOut.UngetWriteBuf();
1294     }
1295     if (ok)
1296         return pathOut;
1297
1298     return path;
1299 #else
1300     return GetFullPath();
1301 #endif
1302 }
1303
1304 // Return the long form of the path (returns identity on non-Windows platforms)
1305 wxString wxFileName::GetLongPath() const
1306 {
1307     wxString pathOut,
1308              path = GetFullPath();
1309
1310 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
1311     bool success = FALSE;
1312
1313 #if wxUSE_DYNAMIC_LOADER
1314     typedef DWORD (WINAPI *GET_LONG_PATH_NAME)(const wxChar *, wxChar *, DWORD);
1315
1316     static bool s_triedToLoad = FALSE;
1317
1318     if ( !s_triedToLoad )
1319     {
1320         // suppress the errors about missing GetLongPathName[AW]
1321         wxLogNull noLog;
1322
1323         s_triedToLoad = TRUE;
1324         wxDynamicLibrary dllKernel(_T("kernel32"));
1325         if ( dllKernel.IsLoaded() )
1326         {
1327             // may succeed or fail depending on the Windows version
1328             static GET_LONG_PATH_NAME s_pfnGetLongPathName = NULL;
1329 #ifdef _UNICODE
1330             s_pfnGetLongPathName = (GET_LONG_PATH_NAME) dllKernel.GetSymbol(_T("GetLongPathNameW"));
1331 #else
1332             s_pfnGetLongPathName = (GET_LONG_PATH_NAME) dllKernel.GetSymbol(_T("GetLongPathNameA"));
1333 #endif
1334
1335             if ( s_pfnGetLongPathName )
1336             {
1337                 DWORD dwSize = (*s_pfnGetLongPathName)(path, NULL, 0);
1338                 bool ok = dwSize > 0;
1339
1340                 if ( ok )
1341                 {
1342                     DWORD sz = (*s_pfnGetLongPathName)(path, NULL, 0);
1343                     ok = sz != 0;
1344                     if ( ok )
1345                     {
1346                         ok = (*s_pfnGetLongPathName)
1347                                 (
1348                                 path,
1349                                 pathOut.GetWriteBuf(sz),
1350                                 sz
1351                                 ) != 0;
1352                         pathOut.UngetWriteBuf();
1353
1354                         success = TRUE;
1355                     }
1356                 }
1357             }
1358         }
1359     }
1360
1361     if (success)
1362         return pathOut;
1363 #endif // wxUSE_DYNAMIC_LOADER
1364
1365     if (!success)
1366     {
1367         // The OS didn't support GetLongPathName, or some other error.
1368         // We need to call FindFirstFile on each component in turn.
1369
1370         WIN32_FIND_DATA findFileData;
1371         HANDLE hFind;
1372
1373         if ( HasVolume() )
1374             pathOut = GetVolume() +
1375                       GetVolumeSeparator(wxPATH_DOS) +
1376                       GetPathSeparator(wxPATH_DOS);
1377         else
1378             pathOut = wxEmptyString;
1379
1380         wxArrayString dirs = GetDirs();
1381         dirs.Add(GetFullName());
1382
1383         wxString tmpPath;
1384
1385         size_t count = dirs.GetCount();
1386         for ( size_t i = 0; i < count; i++ )
1387         {
1388             // We're using pathOut to collect the long-name path, but using a
1389             // temporary for appending the last path component which may be
1390             // short-name
1391             tmpPath = pathOut + dirs[i];
1392
1393             if ( tmpPath.empty() )
1394                 continue;
1395
1396             // can't see this being necessary? MF
1397             if ( tmpPath.Last() == GetVolumeSeparator(wxPATH_DOS) )
1398             {
1399                 // Can't pass a drive and root dir to FindFirstFile,
1400                 // so continue to next dir
1401                 tmpPath += wxFILE_SEP_PATH;
1402                 pathOut = tmpPath;
1403                 continue;
1404             }
1405
1406             hFind = ::FindFirstFile(tmpPath, &findFileData);
1407             if (hFind == INVALID_HANDLE_VALUE)
1408             {
1409                 // Error: most likely reason is that path doesn't exist, so
1410                 // append any unprocessed parts and return
1411                 for ( i += 1; i < count; i++ )
1412                     tmpPath += wxFILE_SEP_PATH + dirs[i];
1413
1414                 return tmpPath;
1415             }
1416
1417             pathOut += findFileData.cFileName;
1418             if ( (i < (count-1)) )
1419                 pathOut += wxFILE_SEP_PATH;
1420
1421             ::FindClose(hFind);
1422         }
1423     }
1424 #else // !Win32
1425     pathOut = path;
1426 #endif // Win32/!Win32
1427
1428     return pathOut;
1429 }
1430
1431 wxPathFormat wxFileName::GetFormat( wxPathFormat format )
1432 {
1433     if (format == wxPATH_NATIVE)
1434     {
1435 #if defined(__WXMSW__) || defined(__WXPM__) || defined(__DOS__)
1436         format = wxPATH_DOS;
1437 #elif defined(__WXMAC__) && !defined(__DARWIN__)
1438         format = wxPATH_MAC;
1439 #elif defined(__VMS)
1440         format = wxPATH_VMS;
1441 #else
1442         format = wxPATH_UNIX;
1443 #endif
1444     }
1445     return format;
1446 }
1447
1448 // ----------------------------------------------------------------------------
1449 // path splitting function
1450 // ----------------------------------------------------------------------------
1451
1452 /* static */
1453 void wxFileName::SplitPath(const wxString& fullpathWithVolume,
1454                            wxString *pstrVolume,
1455                            wxString *pstrPath,
1456                            wxString *pstrName,
1457                            wxString *pstrExt,
1458                            wxPathFormat format)
1459 {
1460     format = GetFormat(format);
1461
1462     wxString fullpath = fullpathWithVolume;
1463
1464     // under VMS the end of the path is ']', not the path separator used to
1465     // separate the components
1466     wxString sepPath = format == wxPATH_VMS ? wxString(_T(']'))
1467                                             : GetPathSeparators(format);
1468
1469     // special Windows UNC paths hack: transform \\share\path into share:path
1470     if ( format == wxPATH_DOS )
1471     {
1472         if ( fullpath.length() >= 4 &&
1473                 fullpath[0u] == wxFILE_SEP_PATH_DOS &&
1474                     fullpath[1u] == wxFILE_SEP_PATH_DOS )
1475         {
1476             fullpath.erase(0, 2);
1477
1478             size_t posFirstSlash = fullpath.find_first_of(sepPath);
1479             if ( posFirstSlash != wxString::npos )
1480             {
1481                 fullpath[posFirstSlash] = wxFILE_SEP_DSK;
1482
1483                 // UNC paths are always absolute, right? (FIXME)
1484                 fullpath.insert(posFirstSlash + 1, wxFILE_SEP_PATH_DOS);
1485             }
1486         }
1487     }
1488
1489     // We separate the volume here
1490     if ( format == wxPATH_DOS || format == wxPATH_VMS )
1491     {
1492         wxString sepVol = GetVolumeSeparator(format);
1493
1494         size_t posFirstColon = fullpath.find_first_of(sepVol);
1495         if ( posFirstColon != wxString::npos )
1496         {
1497             if ( pstrVolume )
1498             {
1499                 *pstrVolume = fullpath.Left(posFirstColon);
1500             }
1501
1502             // remove the volume name and the separator from the full path
1503             fullpath.erase(0, posFirstColon + sepVol.length());
1504         }
1505     }
1506
1507     // find the positions of the last dot and last path separator in the path
1508     size_t posLastDot = fullpath.find_last_of(wxFILE_SEP_EXT);
1509     size_t posLastSlash = fullpath.find_last_of(sepPath);
1510
1511     if ( (posLastDot != wxString::npos) &&
1512             ((format == wxPATH_UNIX) || (format == wxPATH_VMS)) )
1513     {
1514         if ( (posLastDot == 0) ||
1515              (fullpath[posLastDot - 1] == sepPath[0u] ) )
1516         {
1517             // under Unix and VMS, dot may be (and commonly is) the first
1518             // character of the filename, don't treat the entire filename as
1519             // extension in this case
1520             posLastDot = wxString::npos;
1521         }
1522     }
1523
1524     // if we do have a dot and a slash, check that the dot is in the name part
1525     if ( (posLastDot != wxString::npos) &&
1526          (posLastSlash != wxString::npos) &&
1527          (posLastDot < posLastSlash) )
1528     {
1529         // the dot is part of the path, not the start of the extension
1530         posLastDot = wxString::npos;
1531     }
1532
1533     // now fill in the variables provided by user
1534     if ( pstrPath )
1535     {
1536         if ( posLastSlash == wxString::npos )
1537         {
1538             // no path at all
1539             pstrPath->Empty();
1540         }
1541         else
1542         {
1543             // take everything up to the path separator but take care to make
1544             // the path equal to something like '/', not empty, for the files
1545             // immediately under root directory
1546             size_t len = posLastSlash;
1547
1548             // this rule does not apply to mac since we do not start with colons (sep)
1549             // except for relative paths
1550             if ( !len && format != wxPATH_MAC)
1551                 len++;
1552
1553             *pstrPath = fullpath.Left(len);
1554
1555             // special VMS hack: remove the initial bracket
1556             if ( format == wxPATH_VMS )
1557             {
1558                 if ( (*pstrPath)[0u] == _T('[') )
1559                     pstrPath->erase(0, 1);
1560             }
1561         }
1562     }
1563
1564     if ( pstrName )
1565     {
1566         // take all characters starting from the one after the last slash and
1567         // up to, but excluding, the last dot
1568         size_t nStart = posLastSlash == wxString::npos ? 0 : posLastSlash + 1;
1569         size_t count;
1570         if ( posLastDot == wxString::npos )
1571         {
1572             // take all until the end
1573             count = wxString::npos;
1574         }
1575         else if ( posLastSlash == wxString::npos )
1576         {
1577             count = posLastDot;
1578         }
1579         else // have both dot and slash
1580         {
1581             count = posLastDot - posLastSlash - 1;
1582         }
1583
1584         *pstrName = fullpath.Mid(nStart, count);
1585     }
1586
1587     if ( pstrExt )
1588     {
1589         if ( posLastDot == wxString::npos )
1590         {
1591             // no extension
1592             pstrExt->Empty();
1593         }
1594         else
1595         {
1596             // take everything after the dot
1597             *pstrExt = fullpath.Mid(posLastDot + 1);
1598         }
1599     }
1600 }
1601
1602 /* static */
1603 void wxFileName::SplitPath(const wxString& fullpath,
1604                            wxString *path,
1605                            wxString *name,
1606                            wxString *ext,
1607                            wxPathFormat format)
1608 {
1609     wxString volume;
1610     SplitPath(fullpath, &volume, path, name, ext, format);
1611
1612     if ( path )
1613     {
1614         path->Prepend(wxGetVolumeString(volume, format));
1615     }
1616 }
1617
1618 // ----------------------------------------------------------------------------
1619 // time functions
1620 // ----------------------------------------------------------------------------
1621
1622 #if wxUSE_DATETIME
1623
1624 bool wxFileName::SetTimes(const wxDateTime *dtAccess,
1625                           const wxDateTime *dtMod,
1626                           const wxDateTime *dtCreate)
1627 {
1628 #if defined(__WIN32__)
1629     if ( IsDir() )
1630     {
1631         // VZ: please let me know how to do this if you can
1632         wxFAIL_MSG( _T("SetTimes() not implemented for the directories") );
1633     }
1634     else // file
1635     {
1636         wxFileHandle fh(GetFullPath(), wxFileHandle::Write);
1637         if ( fh.IsOk() )
1638         {
1639             FILETIME ftAccess, ftCreate, ftWrite;
1640
1641             if ( dtCreate )
1642                 ConvertWxToFileTime(&ftCreate, *dtCreate);
1643             if ( dtAccess )
1644                 ConvertWxToFileTime(&ftAccess, *dtAccess);
1645             if ( dtMod )
1646                 ConvertWxToFileTime(&ftWrite, *dtMod);
1647
1648             if ( ::SetFileTime(fh,
1649                                dtCreate ? &ftCreate : NULL,
1650                                dtAccess ? &ftAccess : NULL,
1651                                dtMod ? &ftWrite : NULL) )
1652             {
1653                 return TRUE;
1654             }
1655         }
1656     }
1657 #elif defined(__UNIX_LIKE__) || (defined(__DOS__) && defined(__WATCOMC__))
1658     if ( !dtAccess && !dtMod )
1659     {
1660         // can't modify the creation time anyhow, don't try
1661         return TRUE;
1662     }
1663
1664     // if dtAccess or dtMod is not specified, use the other one (which must be
1665     // non NULL because of the test above) for both times
1666     utimbuf utm;
1667     utm.actime = dtAccess ? dtAccess->GetTicks() : dtMod->GetTicks();
1668     utm.modtime = dtMod ? dtMod->GetTicks() : dtAccess->GetTicks();
1669     if ( utime(GetFullPath().fn_str(), &utm) == 0 )
1670     {
1671         return TRUE;
1672     }
1673 #else // other platform
1674 #endif // platforms
1675
1676     wxLogSysError(_("Failed to modify file times for '%s'"),
1677                   GetFullPath().c_str());
1678
1679     return FALSE;
1680 }
1681
1682 bool wxFileName::Touch()
1683 {
1684 #if defined(__UNIX_LIKE__)
1685     // under Unix touching file is simple: just pass NULL to utime()
1686     if ( utime(GetFullPath().fn_str(), NULL) == 0 )
1687     {
1688         return TRUE;
1689     }
1690
1691     wxLogSysError(_("Failed to touch the file '%s'"), GetFullPath().c_str());
1692
1693     return FALSE;
1694 #else // other platform
1695     wxDateTime dtNow = wxDateTime::Now();
1696
1697     return SetTimes(&dtNow, &dtNow, NULL /* don't change create time */);
1698 #endif // platforms
1699 }
1700
1701 bool wxFileName::GetTimes(wxDateTime *dtAccess,
1702                           wxDateTime *dtMod,
1703                           wxDateTime *dtCreate) const
1704 {
1705 #if defined(__WIN32__)
1706     // we must use different methods for the files and directories under
1707     // Windows as CreateFile(GENERIC_READ) doesn't work for the directories and
1708     // CreateFile(FILE_FLAG_BACKUP_SEMANTICS) works -- but only under NT and
1709     // not 9x
1710     bool ok;
1711     FILETIME ftAccess, ftCreate, ftWrite;
1712     if ( IsDir() )
1713     {
1714         // implemented in msw/dir.cpp
1715         extern bool wxGetDirectoryTimes(const wxString& dirname,
1716                                         FILETIME *, FILETIME *, FILETIME *);
1717
1718         // we should pass the path without the trailing separator to
1719         // wxGetDirectoryTimes()
1720         ok = wxGetDirectoryTimes(GetPath(wxPATH_GET_VOLUME),
1721                                  &ftAccess, &ftCreate, &ftWrite);
1722     }
1723     else // file
1724     {
1725         wxFileHandle fh(GetFullPath(), wxFileHandle::Read);
1726         if ( fh.IsOk() )
1727         {
1728             ok = ::GetFileTime(fh,
1729                                dtCreate ? &ftCreate : NULL,
1730                                dtAccess ? &ftAccess : NULL,
1731                                dtMod ? &ftWrite : NULL) != 0;
1732         }
1733         else
1734         {
1735             ok = FALSE;
1736         }
1737     }
1738
1739     if ( ok )
1740     {
1741         if ( dtCreate )
1742             ConvertFileTimeToWx(dtCreate, ftCreate);
1743         if ( dtAccess )
1744             ConvertFileTimeToWx(dtAccess, ftAccess);
1745         if ( dtMod )
1746             ConvertFileTimeToWx(dtMod, ftWrite);
1747
1748         return TRUE;
1749     }
1750 #elif defined(__UNIX_LIKE__) || defined(__WXMAC__) || (defined(__DOS__) && defined(__WATCOMC__))
1751     wxStructStat stBuf;
1752     if ( wxStat( GetFullPath().c_str(), &stBuf) == 0 )
1753     {
1754         if ( dtAccess )
1755             dtAccess->Set(stBuf.st_atime);
1756         if ( dtMod )
1757             dtMod->Set(stBuf.st_mtime);
1758         if ( dtCreate )
1759             dtCreate->Set(stBuf.st_ctime);
1760
1761         return TRUE;
1762     }
1763 #else // other platform
1764 #endif // platforms
1765
1766     wxLogSysError(_("Failed to retrieve file times for '%s'"),
1767                   GetFullPath().c_str());
1768
1769     return FALSE;
1770 }
1771
1772 #endif // wxUSE_DATETIME
1773
1774 #ifdef __WXMAC__
1775
1776 const short kMacExtensionMaxLength = 16 ;
1777 class MacDefaultExtensionRecord
1778 {
1779 public :
1780   MacDefaultExtensionRecord()
1781   {
1782     m_ext[0] = 0 ;
1783     m_type = m_creator = NULL ;
1784   }
1785   MacDefaultExtensionRecord( const MacDefaultExtensionRecord& from )
1786   {
1787     strcpy( m_ext , from.m_ext ) ;
1788     m_type = from.m_type ;
1789     m_creator = from.m_creator ;
1790   }
1791   MacDefaultExtensionRecord( const char * extension , OSType type , OSType creator )
1792   {
1793     strncpy( m_ext , extension , kMacExtensionMaxLength ) ;
1794     m_ext[kMacExtensionMaxLength] = 0 ;
1795     m_type = type ;
1796     m_creator = creator ;
1797   }
1798   char m_ext[kMacExtensionMaxLength] ;
1799   OSType m_type ;
1800   OSType m_creator ;
1801 }  ;
1802
1803 #include "wx/dynarray.h"
1804 WX_DECLARE_OBJARRAY(MacDefaultExtensionRecord, MacDefaultExtensionArray) ;
1805
1806 bool gMacDefaultExtensionsInited = false ;
1807
1808 #include "wx/arrimpl.cpp"
1809
1810 WX_DEFINE_EXPORTED_OBJARRAY(MacDefaultExtensionArray) ;
1811
1812 MacDefaultExtensionArray gMacDefaultExtensions ;
1813
1814 static void MacEnsureDefaultExtensionsLoaded()
1815 {
1816   if ( !gMacDefaultExtensionsInited )
1817   {
1818
1819     // load the default extensions
1820     MacDefaultExtensionRecord defaults[1] =
1821     {
1822       MacDefaultExtensionRecord( "txt" , 'TEXT' , 'ttxt' ) ,
1823
1824     } ;
1825     // we could load the pc exchange prefs here too
1826
1827     for ( size_t i = 0 ; i < WXSIZEOF( defaults ) ; ++i )
1828     {
1829       gMacDefaultExtensions.Add( defaults[i] ) ;
1830     }
1831     gMacDefaultExtensionsInited = true ;
1832   }
1833 }
1834 bool wxFileName::MacSetTypeAndCreator( wxUint32 type , wxUint32 creator )
1835 {
1836   FInfo fndrInfo ;
1837   FSSpec spec ;
1838   wxMacFilename2FSSpec(GetFullPath(),&spec) ;
1839   OSErr err = FSpGetFInfo( &spec , &fndrInfo ) ;
1840   wxCHECK( err == noErr , false ) ;
1841
1842   fndrInfo.fdType = type ;
1843   fndrInfo.fdCreator = creator ;
1844   FSpSetFInfo( &spec , &fndrInfo ) ;
1845   return true ;
1846 }
1847
1848 bool wxFileName::MacGetTypeAndCreator( wxUint32 *type , wxUint32 *creator )
1849 {
1850   FInfo fndrInfo ;
1851   FSSpec spec ;
1852   wxMacFilename2FSSpec(GetFullPath(),&spec) ;
1853   OSErr err = FSpGetFInfo( &spec , &fndrInfo ) ;
1854   wxCHECK( err == noErr , false ) ;
1855
1856   *type = fndrInfo.fdType ;
1857   *creator = fndrInfo.fdCreator ;
1858   return true ;
1859 }
1860
1861 bool wxFileName::MacSetDefaultTypeAndCreator()
1862 {
1863     wxUint32 type , creator ;
1864     if ( wxFileName::MacFindDefaultTypeAndCreator(GetExt() , &type ,
1865       &creator ) )
1866     {
1867         return MacSetTypeAndCreator( type , creator ) ;
1868     }
1869     return false;
1870 }
1871
1872 bool wxFileName::MacFindDefaultTypeAndCreator( const wxString& ext , wxUint32 *type , wxUint32 *creator )
1873 {
1874   MacEnsureDefaultExtensionsLoaded() ;
1875   wxString extl = ext.Lower() ;
1876   for( int i = gMacDefaultExtensions.Count() - 1 ; i >= 0 ; --i )
1877   {
1878     if ( gMacDefaultExtensions.Item(i).m_ext == extl )
1879     {
1880       *type = gMacDefaultExtensions.Item(i).m_type ;
1881       *creator = gMacDefaultExtensions.Item(i).m_creator ;
1882       return true ;
1883     }
1884   }
1885   return false ;
1886 }
1887
1888 void wxFileName::MacRegisterDefaultTypeAndCreator( const wxString& ext , wxUint32 type , wxUint32 creator )
1889 {
1890   MacEnsureDefaultExtensionsLoaded() ;
1891   MacDefaultExtensionRecord rec ;
1892   rec.m_type = type ;
1893   rec.m_creator = creator ;
1894   strncpy( rec.m_ext , ext.Lower().c_str() , kMacExtensionMaxLength ) ;
1895   gMacDefaultExtensions.Add( rec ) ;
1896 }
1897 #endif