src/common/filename.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/filename.cpp
   3 // Purpose:     wxFileName - encapsulates a file path
   4 // Author:      Robert Roebling, Vadim Zeitlin
   5 // Modified by:
   6 // Created:     28.12.2000
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2000 Robert Roebling
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 /*
  13    Here are brief descriptions of the filename formats supported by this class:
  14
  15    wxPATH_UNIX: standard Unix format, used under Darwin as well, absolute file
  16                 names have the form:
  17                 /dir1/dir2/.../dirN/filename, "." and ".." stand for the
  18                 current and parent directory respectively, "~" is parsed as the
  19                 user HOME and "~username" as the HOME of that user
  20
  21    wxPATH_DOS:  DOS/Windows format, absolute file names have the form:
  22                 drive:\dir1\dir2\...\dirN\filename.ext where drive is a single
  23                 letter. "." and ".." as for Unix but no "~".
  24
  25                 There are also UNC names of the form \\share\fullpath
  26
  27    wxPATH_MAC:  Mac OS 8/9 and Mac OS X under CodeWarrior 7 format, absolute file
  28                 names have the form
  29                     volume:dir1:...:dirN:filename
  30                 and the relative file names are either
  31                     :dir1:...:dirN:filename
  32                 or just
  33                     filename
  34                 (although :filename works as well).
  35                 Since the volume is just part of the file path, it is not
  36                 treated like a separate entity as it is done under DOS and
  37                 VMS, it is just treated as another dir.
  38
  39    wxPATH_VMS:  VMS native format, absolute file names have the form
  40                     <device>:[dir1.dir2.dir3]file.txt
  41                 or
  42                     <device>:[000000.dir1.dir2.dir3]file.txt
  43
  44                 the <device> is the physical device (i.e. disk). 000000 is the
  45                 root directory on the device which can be omitted.
  46
  47                 Note that VMS uses different separators unlike Unix:
  48                  : always after the device. If the path does not contain : than
  49                    the default (the device of the current directory) is assumed.
  50                  [ start of directory specification
  51                  . separator between directory and subdirectory
  52                  ] between directory and file
  53  */
  54
  55 // ============================================================================
  56 // declarations
  57 // ============================================================================
  58
  59 // ----------------------------------------------------------------------------
  60 // headers
  61 // ----------------------------------------------------------------------------
  62
  63 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  64 #pragma implementation "filename.h"
  65 #endif
  66
  67 // For compilers that support precompilation, includes "wx.h".
  68 #include "wx/wxprec.h"
  69
  70 #ifdef __BORLANDC__
  71 #pragma hdrstop
  72 #endif
  73
  74 #ifndef WX_PRECOMP
  75 #include "wx/intl.h"
  76 #include "wx/log.h"
  77 #include "wx/file.h"
  78 #endif
  79
  80 #include "wx/filename.h"
  81 #include "wx/tokenzr.h"
  82 #include "wx/config.h"          // for wxExpandEnvVars
  83 #include "wx/utils.h"
  84 #include "wx/file.h"
  85 #include "wx/dynlib.h"
  86
  87 // For GetShort/LongPathName
  88 #ifdef __WIN32__
  89 #include "wx/msw/wrapwin.h"
  90 #if defined(__MINGW32__)
  91 #include "wx/msw/gccpriv.h"
  92 #endif
  93 #endif
  94
  95 #ifdef __WXWINCE__
  96 #include "wx/msw/private.h"
  97 #endif
  98
  99 #if defined(__WXMAC__)
 100   #include  "wx/mac/private.h"  // includes mac headers
 101 #endif
 102
 103 // utime() is POSIX so should normally be available on all Unices
 104 #ifdef __UNIX_LIKE__
 105 #include <sys/types.h>
 106 #include <utime.h>
 107 #include <sys/stat.h>
 108 #include <unistd.h>
 109 #endif
 110
 111 #ifdef __DJGPP__
 112 #include <unistd.h>
 113 #endif
 114
 115 #ifdef __MWERKS__
 116 #ifdef __MACH__
 117 #include <sys/types.h>
 118 #include <utime.h>
 119 #include <sys/stat.h>
 120 #include <unistd.h>
 121 #else
 122 #include <stat.h>
 123 #include <unistd.h>
 124 #include <unix.h>
 125 #endif
 126 #endif
 127
 128 #ifdef __WATCOMC__
 129 #include <io.h>
 130 #include <sys/utime.h>
 131 #include <sys/stat.h>
 132 #endif
 133
 134 #ifdef __VISAGECPP__
 135 #ifndef MAX_PATH
 136 #define MAX_PATH 256
 137 #endif
 138 #endif
 139
 140 #ifdef __EMX__
 141 #include <os2.h>
 142 #define MAX_PATH _MAX_PATH
 143 #endif
 144
 145 // ----------------------------------------------------------------------------
 146 // private classes
 147 // ----------------------------------------------------------------------------
 148
 149 // small helper class which opens and closes the file - we use it just to get
 150 // a file handle for the given file name to pass it to some Win32 API function
 151 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
 152
 153 class wxFileHandle
 154 {
 155 public:
 156     enum OpenMode
 157     {
 158         Read,
 159         Write
 160     };
 161
 162     wxFileHandle(const wxString& filename, OpenMode mode)
 163     {
 164         m_hFile = ::CreateFile
 165                     (
 166                      filename,                      // name
 167                      mode == Read ? GENERIC_READ    // access mask
 168                                   : GENERIC_WRITE,
 169                      FILE_SHARE_READ |              // sharing mode
 170                      FILE_SHARE_WRITE,              // (allow everything)
 171                      NULL,                          // no secutity attr
 172                      OPEN_EXISTING,                 // creation disposition
 173                      0,                             // no flags
 174                      NULL                           // no template file
 175                     );
 176
 177         if ( m_hFile == INVALID_HANDLE_VALUE )
 178         {
 179             wxLogSysError(_("Failed to open '%s' for %s"),
 180                           filename.c_str(),
 181                           mode == Read ? _("reading") : _("writing"));
 182         }
 183     }
 184
 185     ~wxFileHandle()
 186     {
 187         if ( m_hFile != INVALID_HANDLE_VALUE )
 188         {
 189             if ( !::CloseHandle(m_hFile) )
 190             {
 191                 wxLogSysError(_("Failed to close file handle"));
 192             }
 193         }
 194     }
 195
 196     // return true only if the file could be opened successfully
 197     bool IsOk() const { return m_hFile != INVALID_HANDLE_VALUE; }
 198
 199     // get the handle
 200     operator HANDLE() const { return m_hFile; }
 201
 202 private:
 203     HANDLE m_hFile;
 204 };
 205
 206 #endif // __WIN32__
 207
 208 // ----------------------------------------------------------------------------
 209 // private functions
 210 // ----------------------------------------------------------------------------
 211
 212 #if wxUSE_DATETIME && defined(__WIN32__) && !defined(__WXMICROWIN__)
 213
 214 // convert between wxDateTime and FILETIME which is a 64-bit value representing
 215 // the number of 100-nanosecond intervals since January 1, 1601.
 216
 217 static void ConvertFileTimeToWx(wxDateTime *dt, const FILETIME &ft)
 218 {
 219     FILETIME ftcopy = ft;
 220     FILETIME ftLocal;
 221     if ( !::FileTimeToLocalFileTime(&ftcopy, &ftLocal) )
 222     {
 223         wxLogLastError(_T("FileTimeToLocalFileTime"));
 224     }
 225
 226     SYSTEMTIME st;
 227     if ( !::FileTimeToSystemTime(&ftLocal, &st) )
 228     {
 229         wxLogLastError(_T("FileTimeToSystemTime"));
 230     }
 231
 232     dt->Set(st.wDay, wxDateTime::Month(st.wMonth - 1), st.wYear,
 233             st.wHour, st.wMinute, st.wSecond, st.wMilliseconds);
 234 }
 235
 236 static void ConvertWxToFileTime(FILETIME *ft, const wxDateTime& dt)
 237 {
 238     SYSTEMTIME st;
 239     st.wDay = dt.GetDay();
 240     st.wMonth = (WORD)(dt.GetMonth() + 1);
 241     st.wYear = (WORD)dt.GetYear();
 242     st.wHour = dt.GetHour();
 243     st.wMinute = dt.GetMinute();
 244     st.wSecond = dt.GetSecond();
 245     st.wMilliseconds = dt.GetMillisecond();
 246
 247     FILETIME ftLocal;
 248     if ( !::SystemTimeToFileTime(&st, &ftLocal) )
 249     {
 250         wxLogLastError(_T("SystemTimeToFileTime"));
 251     }
 252
 253     if ( !::LocalFileTimeToFileTime(&ftLocal, ft) )
 254     {
 255         wxLogLastError(_T("LocalFileTimeToFileTime"));
 256     }
 257 }
 258
 259 #endif // wxUSE_DATETIME && __WIN32__
 260
 261 // return a string with the volume par
 262 static wxString wxGetVolumeString(const wxString& volume, wxPathFormat format)
 263 {
 264     wxString path;
 265
 266     if ( !volume.empty() )
 267     {
 268         format = wxFileName::GetFormat(format);
 269
 270         // Special Windows UNC paths hack, part 2: undo what we did in
 271         // SplitPath() and make an UNC path if we have a drive which is not a
 272         // single letter (hopefully the network shares can't be one letter only
 273         // although I didn't find any authoritative docs on this)
 274         if ( format == wxPATH_DOS && volume.length() > 1 )
 275         {
 276             path << wxFILE_SEP_PATH_DOS << wxFILE_SEP_PATH_DOS << volume;
 277         }
 278         else if  ( format == wxPATH_DOS || format == wxPATH_VMS )
 279         {
 280             path << volume << wxFileName::GetVolumeSeparator(format);
 281         }
 282         // else ignore
 283     }
 284
 285     return path;
 286 }
 287
 288 // ============================================================================
 289 // implementation
 290 // ============================================================================
 291
 292 // ----------------------------------------------------------------------------
 293 // wxFileName construction
 294 // ----------------------------------------------------------------------------
 295
 296 void wxFileName::Assign( const wxFileName &filepath )
 297 {
 298     m_volume = filepath.GetVolume();
 299     m_dirs = filepath.GetDirs();
 300     m_name = filepath.GetName();
 301     m_ext = filepath.GetExt();
 302     m_relative = filepath.m_relative;
 303 }
 304
 305 void wxFileName::Assign(const wxString& volume,
 306                         const wxString& path,
 307                         const wxString& name,
 308                         const wxString& ext,
 309                         wxPathFormat format )
 310 {
 311     SetPath( path, format );
 312
 313     m_volume = volume;
 314     m_ext = ext;
 315     m_name = name;
 316 }
 317
 318 void wxFileName::SetPath( const wxString& pathOrig, wxPathFormat format )
 319 {
 320     m_dirs.Clear();
 321
 322     if ( pathOrig.empty() )
 323     {
 324         // no path at all
 325         m_relative = true;
 326
 327         return;
 328     }
 329
 330     format = GetFormat( format );
 331
 332     // 0) deal with possible volume part first
 333     wxString volume,
 334              path;
 335     SplitVolume(pathOrig, &volume, &path, format);
 336     if ( !volume.empty() )
 337     {
 338         m_relative = false;
 339
 340         SetVolume(volume);
 341     }
 342
 343     // 1) Determine if the path is relative or absolute.
 344     wxChar leadingChar = path[0u];
 345
 346     switch (format)
 347     {
 348         case wxPATH_MAC:
 349             m_relative = leadingChar == wxT(':');
 350
 351             // We then remove a leading ":". The reason is in our
 352             // storage form for relative paths:
 353             // ":dir:file.txt" actually means "./dir/file.txt" in
 354             // DOS notation and should get stored as
 355             // (relative) (dir) (file.txt)
 356             // "::dir:file.txt" actually means "../dir/file.txt"
 357             // stored as (relative) (..) (dir) (file.txt)
 358             // This is important only for the Mac as an empty dir
 359             // actually means <UP>, whereas under DOS, double
 360             // slashes can be ignored: "\\\\" is the same as "\\".
 361             if (m_relative)
 362                 path.erase( 0, 1 );
 363             break;
 364
 365         case wxPATH_VMS:
 366             // TODO: what is the relative path format here?
 367             m_relative = false;
 368             break;
 369
 370         default:
 371             wxFAIL_MSG( _T("Unknown path format") );
 372             // !! Fall through !!
 373
 374         case wxPATH_UNIX:
 375             // the paths of the form "~" or "~username" are absolute
 376             m_relative = leadingChar != wxT('/') && leadingChar != _T('~');
 377             break;
 378
 379         case wxPATH_DOS:
 380             m_relative = !IsPathSeparator(leadingChar, format);
 381             break;
 382
 383     }
 384
 385     // 2) Break up the path into its members. If the original path
 386     //    was just "/" or "\\", m_dirs will be empty. We know from
 387     //    the m_relative field, if this means "nothing" or "root dir".
 388
 389     wxStringTokenizer tn( path, GetPathSeparators(format) );
 390
 391     while ( tn.HasMoreTokens() )
 392     {
 393         wxString token = tn.GetNextToken();
 394
 395         // Remove empty token under DOS and Unix, interpret them
 396         // as .. under Mac.
 397         if (token.empty())
 398         {
 399             if (format == wxPATH_MAC)
 400                 m_dirs.Add( wxT("..") );
 401             // else ignore
 402         }
 403         else
 404         {
 405            m_dirs.Add( token );
 406         }
 407     }
 408 }
 409
 410 void wxFileName::Assign(const wxString& fullpath,
 411                         wxPathFormat format)
 412 {
 413     wxString volume, path, name, ext;
 414     SplitPath(fullpath, &volume, &path, &name, &ext, format);
 415
 416     Assign(volume, path, name, ext, format);
 417 }
 418
 419 void wxFileName::Assign(const wxString& fullpathOrig,
 420                         const wxString& fullname,
 421                         wxPathFormat format)
 422 {
 423     // always recognize fullpath as directory, even if it doesn't end with a
 424     // slash
 425     wxString fullpath = fullpathOrig;
 426     if ( !wxEndsWithPathSeparator(fullpath) )
 427     {
 428         fullpath += GetPathSeparator(format);
 429     }
 430
 431     wxString volume, path, name, ext;
 432
 433     // do some consistency checks in debug mode: the name should be really just
 434     // the filename and the path should be really just a path
 435 #ifdef __WXDEBUG__
 436     wxString pathDummy, nameDummy, extDummy;
 437
 438     SplitPath(fullname, &pathDummy, &name, &ext, format);
 439
 440     wxASSERT_MSG( pathDummy.empty(),
 441                   _T("the file name shouldn't contain the path") );
 442
 443     SplitPath(fullpath, &volume, &path, &nameDummy, &extDummy, format);
 444
 445     wxASSERT_MSG( nameDummy.empty() && extDummy.empty(),
 446                   _T("the path shouldn't contain file name nor extension") );
 447
 448 #else // !__WXDEBUG__
 449     SplitPath(fullname, NULL /* no path */, &name, &ext, format);
 450     SplitPath(fullpath, &volume, &path, NULL, NULL, format);
 451 #endif // __WXDEBUG__/!__WXDEBUG__
 452
 453     Assign(volume, path, name, ext, format);
 454 }
 455
 456 void wxFileName::Assign(const wxString& pathOrig,
 457                         const wxString& name,
 458                         const wxString& ext,
 459                         wxPathFormat format)
 460 {
 461     wxString volume,
 462              path;
 463     SplitVolume(pathOrig, &volume, &path, format);
 464
 465     Assign(volume, path, name, ext, format);
 466 }
 467
 468 void wxFileName::AssignDir(const wxString& dir, wxPathFormat format)
 469 {
 470     Assign(dir, wxEmptyString, format);
 471 }
 472
 473 void wxFileName::Clear()
 474 {
 475     m_dirs.Clear();
 476
 477     m_volume =
 478     m_name =
 479     m_ext = wxEmptyString;
 480
 481     // we don't have any absolute path for now
 482     m_relative = true;
 483 }
 484
 485 /* static */
 486 wxFileName wxFileName::FileName(const wxString& file, wxPathFormat format)
 487 {
 488     return wxFileName(file, format);
 489 }
 490
 491 /* static */
 492 wxFileName wxFileName::DirName(const wxString& dir, wxPathFormat format)
 493 {
 494     wxFileName fn;
 495     fn.AssignDir(dir, format);
 496     return fn;
 497 }
 498
 499 // ----------------------------------------------------------------------------
 500 // existence tests
 501 // ----------------------------------------------------------------------------
 502
 503 bool wxFileName::FileExists() const
 504 {
 505     return wxFileName::FileExists( GetFullPath() );
 506 }
 507
 508 bool wxFileName::FileExists( const wxString &file )
 509 {
 510     return ::wxFileExists( file );
 511 }
 512
 513 bool wxFileName::DirExists() const
 514 {
 515     return wxFileName::DirExists( GetFullPath() );
 516 }
 517
 518 bool wxFileName::DirExists( const wxString &dir )
 519 {
 520     return ::wxDirExists( dir );
 521 }
 522
 523 // ----------------------------------------------------------------------------
 524 // CWD and HOME stuff
 525 // ----------------------------------------------------------------------------
 526
 527 void wxFileName::AssignCwd(const wxString& volume)
 528 {
 529     AssignDir(wxFileName::GetCwd(volume));
 530 }
 531
 532 /* static */
 533 wxString wxFileName::GetCwd(const wxString& volume)
 534 {
 535     // if we have the volume, we must get the current directory on this drive
 536     // and to do this we have to chdir to this volume - at least under Windows,
 537     // I don't know how to get the current drive on another volume elsewhere
 538     // (TODO)
 539     wxString cwdOld;
 540     if ( !volume.empty() )
 541     {
 542         cwdOld = wxGetCwd();
 543         SetCwd(volume + GetVolumeSeparator());
 544     }
 545
 546     wxString cwd = ::wxGetCwd();
 547
 548     if ( !volume.empty() )
 549     {
 550         SetCwd(cwdOld);
 551     }
 552
 553     return cwd;
 554 }
 555
 556 bool wxFileName::SetCwd()
 557 {
 558     return wxFileName::SetCwd( GetFullPath() );
 559 }
 560
 561 bool wxFileName::SetCwd( const wxString &cwd )
 562 {
 563     return ::wxSetWorkingDirectory( cwd );
 564 }
 565
 566 void wxFileName::AssignHomeDir()
 567 {
 568     AssignDir(wxFileName::GetHomeDir());
 569 }
 570
 571 wxString wxFileName::GetHomeDir()
 572 {
 573     return ::wxGetHomeDir();
 574 }
 575
 576 void wxFileName::AssignTempFileName(const wxString& prefix, wxFile *fileTemp)
 577 {
 578     wxString tempname = CreateTempFileName(prefix, fileTemp);
 579     if ( tempname.empty() )
 580     {
 581         // error, failed to get temp file name
 582         Clear();
 583     }
 584     else // ok
 585     {
 586         Assign(tempname);
 587     }
 588 }
 589
 590 /* static */
 591 wxString
 592 wxFileName::CreateTempFileName(const wxString& prefix, wxFile *fileTemp)
 593 {
 594     wxString path, dir, name;
 595
 596     // use the directory specified by the prefix
 597     SplitPath(prefix, &dir, &name, NULL /* extension */);
 598
 599 #if defined(__WXWINCE__)
 600     if (dir.empty())
 601     {
 602         // FIXME. Create \temp dir?
 603         dir = wxT("\\");
 604     }
 605     path = dir + wxT("\\") + prefix;
 606     int i = 1;
 607     while (wxFileExists(path))
 608     {
 609         path = dir + wxT("\\") + prefix ;
 610         path << i;
 611         i ++;
 612     }
 613
 614 #elif defined(__WINDOWS__) && !defined(__WXMICROWIN__)
 615
 616     if ( dir.empty() )
 617     {
 618         if ( !::GetTempPath(MAX_PATH, wxStringBuffer(dir, MAX_PATH + 1)) )
 619         {
 620             wxLogLastError(_T("GetTempPath"));
 621         }
 622
 623         if ( dir.empty() )
 624         {
 625             // GetTempFileName() fails if we pass it an empty string
 626             dir = _T('.');
 627         }
 628     }
 629     else // we have a dir to create the file in
 630     {
 631         // ensure we use only the back slashes as GetTempFileName(), unlike all
 632         // the other APIs, is picky and doesn't accept the forward ones
 633         dir.Replace(_T("/"), _T("\\"));
 634     }
 635
 636     if ( !::GetTempFileName(dir, name, 0, wxStringBuffer(path, MAX_PATH + 1)) )
 637     {
 638         wxLogLastError(_T("GetTempFileName"));
 639
 640         path.clear();
 641     }
 642
 643 #else // !Windows
 644     if ( dir.empty() )
 645     {
 646 #if defined(__WXMAC__) && !defined(__DARWIN__)
 647         dir = wxMacFindFolder(  (short) kOnSystemDisk, kTemporaryFolderType, kCreateFolder ) ;
 648 #else // !Mac
 649         dir = wxGetenv(_T("TMP"));
 650         if ( dir.empty() )
 651         {
 652             dir = wxGetenv(_T("TEMP"));
 653         }
 654
 655         if ( dir.empty() )
 656         {
 657             // default
 658             #if defined(__DOS__) || defined(__OS2__)
 659                 dir = _T(".");
 660             #else
 661                 dir = _T("/tmp");
 662             #endif
 663         }
 664 #endif // Mac/!Mac
 665     }
 666
 667     path = dir;
 668
 669     if ( !wxEndsWithPathSeparator(dir) &&
 670             (name.empty() || !wxIsPathSeparator(name[0u])) )
 671     {
 672         path += wxFILE_SEP_PATH;
 673     }
 674
 675     path += name;
 676
 677 #if defined(HAVE_MKSTEMP)
 678     // scratch space for mkstemp()
 679     path += _T("XXXXXX");
 680
 681     // we need to copy the path to the buffer in which mkstemp() can modify it
 682     wxCharBuffer buf( wxConvFile.cWX2MB( path ) );
 683
 684     // cast is safe because the string length doesn't change
 685     int fdTemp = mkstemp( (char*)(const char*) buf );
 686     if ( fdTemp == -1 )
 687     {
 688         // this might be not necessary as mkstemp() on most systems should have
 689         // already done it but it doesn't hurt neither...
 690         path.clear();
 691     }
 692     else // mkstemp() succeeded
 693     {
 694         path = wxConvFile.cMB2WX( (const char*) buf );
 695
 696         // avoid leaking the fd
 697         if ( fileTemp )
 698         {
 699             fileTemp->Attach(fdTemp);
 700         }
 701         else
 702         {
 703             close(fdTemp);
 704         }
 705     }
 706 #else // !HAVE_MKSTEMP
 707
 708 #ifdef HAVE_MKTEMP
 709     // same as above
 710     path += _T("XXXXXX");
 711
 712     wxCharBuffer buf = wxConvFile.cWX2MB( path );
 713     if ( !mktemp( (const char*) buf ) )
 714     {
 715         path.clear();
 716     }
 717     else
 718     {
 719         path = wxConvFile.cMB2WX( (const char*) buf );
 720     }
 721 #else // !HAVE_MKTEMP (includes __DOS__)
 722     // generate the unique file name ourselves
 723     #if !defined(__DOS__) && (!defined(__MWERKS__) || defined(__DARWIN__) )
 724     path << (unsigned int)getpid();
 725     #endif
 726
 727     wxString pathTry;
 728
 729     static const size_t numTries = 1000;
 730     for ( size_t n = 0; n < numTries; n++ )
 731     {
 732         // 3 hex digits is enough for numTries == 1000 < 4096
 733         pathTry = path + wxString::Format(_T("%.03x"), (unsigned int) n);
 734         if ( !wxFile::Exists(pathTry) )
 735         {
 736             break;
 737         }
 738
 739         pathTry.clear();
 740     }
 741
 742     path = pathTry;
 743 #endif // HAVE_MKTEMP/!HAVE_MKTEMP
 744
 745     if ( !path.empty() )
 746     {
 747     }
 748 #endif // HAVE_MKSTEMP/!HAVE_MKSTEMP
 749
 750 #endif // Windows/!Windows
 751
 752     if ( path.empty() )
 753     {
 754         wxLogSysError(_("Failed to create a temporary file name"));
 755     }
 756     else if ( fileTemp && !fileTemp->IsOpened() )
 757     {
 758         // open the file - of course, there is a race condition here, this is
 759         // why we always prefer using mkstemp()...
 760         //
 761         // NB: GetTempFileName() under Windows creates the file, so using
 762         //     write_excl there would fail
 763         if ( !fileTemp->Open(path,
 764 #if defined(__WINDOWS__) && !defined(__WXMICROWIN__)
 765                              wxFile::write,
 766 #else
 767                              wxFile::write_excl,
 768 #endif
 769                              wxS_IRUSR | wxS_IWUSR) )
 770         {
 771             // FIXME: If !ok here should we loop and try again with another
 772             //        file name?  That is the standard recourse if open(O_EXCL)
 773             //        fails, though of course it should be protected against
 774             //        possible infinite looping too.
 775
 776             wxLogError(_("Failed to open temporary file."));
 777
 778             path.clear();
 779         }
 780     }
 781
 782     return path;
 783 }
 784
 785 // ----------------------------------------------------------------------------
 786 // directory operations
 787 // ----------------------------------------------------------------------------
 788
 789 bool wxFileName::Mkdir( int perm, int flags )
 790 {
 791     return wxFileName::Mkdir( GetFullPath(), perm, flags );
 792 }
 793
 794 bool wxFileName::Mkdir( const wxString& dir, int perm, int flags )
 795 {
 796     if ( flags & wxPATH_MKDIR_FULL )
 797     {
 798         // split the path in components
 799         wxFileName filename;
 800         filename.AssignDir(dir);
 801
 802         wxString currPath;
 803         if ( filename.HasVolume())
 804         {
 805             currPath << wxGetVolumeString(filename.GetVolume(), wxPATH_NATIVE);
 806         }
 807
 808         wxArrayString dirs = filename.GetDirs();
 809         size_t count = dirs.GetCount();
 810         for ( size_t i = 0; i < count; i++ )
 811         {
 812             if ( i > 0 ||
 813 #if defined(__WXMAC__) && !defined(__DARWIN__)
 814             // relative pathnames are exactely the other way round under mac...
 815                 !filename.IsAbsolute()
 816 #else
 817                 filename.IsAbsolute()
 818 #endif
 819             )
 820                 currPath += wxFILE_SEP_PATH;
 821             currPath += dirs[i];
 822
 823             if (!DirExists(currPath))
 824             {
 825                 if (!wxMkdir(currPath, perm))
 826                 {
 827                     // no need to try creating further directories
 828                     return false;
 829                 }
 830             }
 831         }
 832
 833         return true;
 834
 835     }
 836
 837     return ::wxMkdir( dir, perm );
 838 }
 839
 840 bool wxFileName::Rmdir()
 841 {
 842     return wxFileName::Rmdir( GetFullPath() );
 843 }
 844
 845 bool wxFileName::Rmdir( const wxString &dir )
 846 {
 847     return ::wxRmdir( dir );
 848 }
 849
 850 // ----------------------------------------------------------------------------
 851 // path normalization
 852 // ----------------------------------------------------------------------------
 853
 854 bool wxFileName::Normalize(int flags,
 855                            const wxString& cwd,
 856                            wxPathFormat format)
 857 {
 858     // deal with env vars renaming first as this may seriously change the path
 859     if ( flags & wxPATH_NORM_ENV_VARS )
 860     {
 861         wxString pathOrig = GetFullPath(format);
 862         wxString path = wxExpandEnvVars(pathOrig);
 863         if ( path != pathOrig )
 864         {
 865             Assign(path);
 866         }
 867     }
 868
 869
 870     // the existing path components
 871     wxArrayString dirs = GetDirs();
 872
 873     // the path to prepend in front to make the path absolute
 874     wxFileName curDir;
 875
 876     format = GetFormat(format);
 877
 878     // make the path absolute
 879     if ( (flags & wxPATH_NORM_ABSOLUTE) && !IsAbsolute(format) )
 880     {
 881         if ( cwd.empty() )
 882         {
 883             curDir.AssignCwd(GetVolume());
 884         }
 885         else // cwd provided
 886         {
 887             curDir.AssignDir(cwd);
 888         }
 889
 890         // the path may be not absolute because it doesn't have the volume name
 891         // but in this case we shouldn't modify the directory components of it
 892         // but just set the current volume
 893         if ( !HasVolume() && curDir.HasVolume() )
 894         {
 895             SetVolume(curDir.GetVolume());
 896
 897             if ( !m_relative )
 898             {
 899                 // yes, it was the case - we don't need curDir then
 900                 curDir.Clear();
 901             }
 902         }
 903     }
 904
 905     // handle ~ stuff under Unix only
 906     if ( (format == wxPATH_UNIX) && (flags & wxPATH_NORM_TILDE) )
 907     {
 908         if ( !dirs.IsEmpty() )
 909         {
 910             wxString dir = dirs[0u];
 911             if ( !dir.empty() && dir[0u] == _T('~') )
 912             {
 913                 curDir.AssignDir(wxGetUserHome(dir.c_str() + 1));
 914
 915                 dirs.RemoveAt(0u);
 916             }
 917         }
 918     }
 919
 920     // transform relative path into abs one
 921     if ( curDir.IsOk() )
 922     {
 923         wxArrayString dirsNew = curDir.GetDirs();
 924         size_t count = dirs.GetCount();
 925         for ( size_t n = 0; n < count; n++ )
 926         {
 927             dirsNew.Add(dirs[n]);
 928         }
 929
 930         dirs = dirsNew;
 931     }
 932
 933     // now deal with ".", ".." and the rest
 934     m_dirs.Empty();
 935     size_t count = dirs.GetCount();
 936     for ( size_t n = 0; n < count; n++ )
 937     {
 938         wxString dir = dirs[n];
 939
 940         if ( flags & wxPATH_NORM_DOTS )
 941         {
 942             if ( dir == wxT(".") )
 943             {
 944                 // just ignore
 945                 continue;
 946             }
 947
 948             if ( dir == wxT("..") )
 949             {
 950                 if ( m_dirs.IsEmpty() )
 951                 {
 952                     wxLogError(_("The path '%s' contains too many \"..\"!"),
 953                                GetFullPath().c_str());
 954                     return false;
 955                 }
 956
 957                 m_dirs.RemoveAt(m_dirs.GetCount() - 1);
 958                 continue;
 959             }
 960         }
 961
 962         if ( (flags & wxPATH_NORM_CASE) && !IsCaseSensitive(format) )
 963         {
 964             dir.MakeLower();
 965         }
 966
 967         m_dirs.Add(dir);
 968     }
 969
 970 #if defined(__WIN32__) && !defined(__WXWINCE__) && wxUSE_OLE
 971     if ( (flags & wxPATH_NORM_SHORTCUT) )
 972     {
 973         wxString filename;
 974         if (GetShortcutTarget(GetFullPath(format), filename))
 975         {
 976             // Repeat this since we may now have a new path
 977             if ( (flags & wxPATH_NORM_CASE) && !IsCaseSensitive(format) )
 978             {
 979                 filename.MakeLower();
 980             }
 981             m_relative = false;
 982             Assign(filename);
 983         }
 984     }
 985 #endif
 986
 987     if ( (flags & wxPATH_NORM_CASE) && !IsCaseSensitive(format) )
 988     {
 989         // VZ: expand env vars here too?
 990
 991         m_volume.MakeLower();
 992         m_name.MakeLower();
 993         m_ext.MakeLower();
 994     }
 995
 996     // we do have the path now
 997     //
 998     // NB: need to do this before (maybe) calling Assign() below
 999     m_relative = false;
1000
1001 #if defined(__WIN32__)
1002     if ( (flags & wxPATH_NORM_LONG) && (format == wxPATH_DOS) )
1003     {
1004         Assign(GetLongPath());
1005     }
1006 #endif // Win32
1007
1008     return true;
1009 }
1010
1011 // ----------------------------------------------------------------------------
1012 // get the shortcut target
1013 // ----------------------------------------------------------------------------
1014
1015 // WinCE (3) doesn't have CLSID_ShellLink, IID_IShellLink definitions.
1016 // The .lnk file is a plain text file so it should be easy to
1017 // make it work. Hint from Google Groups:
1018 // "If you open up a lnk file, you'll see a
1019 // number, followed by a pound sign (#), followed by more text. The
1020 // number is the number of characters that follows the pound sign. The
1021 // characters after the pound sign are the command line (which _can_
1022 // include arguments) to be executed. Any path (e.g. \windows\program
1023 // files\myapp.exe) that includes spaces needs to be enclosed in
1024 // quotation marks."
1025
1026 #if defined(__WIN32__) && !defined(__WXWINCE__) && wxUSE_OLE
1027 // The following lines are necessary under WinCE
1028 // #include "wx/msw/private.h"
1029 // #include <ole2.h>
1030 #include <shlobj.h>
1031 #if defined(__WXWINCE__)
1032 #include <shlguid.h>
1033 #endif
1034
1035 bool wxFileName::GetShortcutTarget(const wxString& shortcutPath, wxString& targetFilename, wxString* arguments)
1036 {
1037     wxString path, file, ext;
1038     wxSplitPath(shortcutPath, & path, & file, & ext);
1039
1040     HRESULT hres;
1041     IShellLink* psl;
1042     bool success = false;
1043
1044     // Assume it's not a shortcut if it doesn't end with lnk
1045     if (ext.Lower() != wxT("lnk"))
1046         return false;
1047
1048     // create a ShellLink object
1049     hres = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER,
1050                             IID_IShellLink, (LPVOID*) &psl);
1051
1052     if (SUCCEEDED(hres))
1053     {
1054         IPersistFile* ppf;
1055         hres = psl->QueryInterface( IID_IPersistFile, (LPVOID *) &ppf);
1056         if (SUCCEEDED(hres))
1057         {
1058             WCHAR wsz[MAX_PATH];
1059
1060             MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, shortcutPath.mb_str(), -1, wsz,
1061                                 MAX_PATH);
1062
1063             hres = ppf->Load(wsz, 0);
1064             if (SUCCEEDED(hres))
1065             {
1066                 wxChar buf[2048];
1067                 // Wrong prototype in early versions
1068 #if defined(__MINGW32__) && !wxCHECK_W32API_VERSION(2, 2)
1069                 psl->GetPath((CHAR*) buf, 2048, NULL, SLGP_UNCPRIORITY);
1070 #else
1071                 psl->GetPath(buf, 2048, NULL, SLGP_UNCPRIORITY);
1072 #endif
1073                 targetFilename = wxString(buf);
1074                 success = (shortcutPath != targetFilename);
1075
1076                 psl->GetArguments(buf, 2048);
1077                 wxString args(buf);
1078                 if (!args.empty() && arguments)
1079                 {
1080                     *arguments = args;
1081                 }
1082             }
1083         }
1084     }
1085     psl->Release();
1086     return success;
1087 }
1088 #endif
1089
1090
1091 // ----------------------------------------------------------------------------
1092 // absolute/relative paths
1093 // ----------------------------------------------------------------------------
1094
1095 bool wxFileName::IsAbsolute(wxPathFormat format) const
1096 {
1097     // if our path doesn't start with a path separator, it's not an absolute
1098     // path
1099     if ( m_relative )
1100         return false;
1101
1102     if ( !GetVolumeSeparator(format).empty() )
1103     {
1104         // this format has volumes and an absolute path must have one, it's not
1105         // enough to have the full path to bean absolute file under Windows
1106         if ( GetVolume().empty() )
1107             return false;
1108     }
1109
1110     return true;
1111 }
1112
1113 bool wxFileName::MakeRelativeTo(const wxString& pathBase, wxPathFormat format)
1114 {
1115     wxFileName fnBase = wxFileName::DirName(pathBase, format);
1116
1117     // get cwd only once - small time saving
1118     wxString cwd = wxGetCwd();
1119     Normalize(wxPATH_NORM_ALL & ~wxPATH_NORM_CASE, cwd, format);
1120     fnBase.Normalize(wxPATH_NORM_ALL & ~wxPATH_NORM_CASE, cwd, format);
1121
1122     bool withCase = IsCaseSensitive(format);
1123
1124     // we can't do anything if the files live on different volumes
1125     if ( !GetVolume().IsSameAs(fnBase.GetVolume(), withCase) )
1126     {
1127         // nothing done
1128         return false;
1129     }
1130
1131     // same drive, so we don't need our volume
1132     m_volume.clear();
1133
1134     // remove common directories starting at the top
1135     while ( !m_dirs.IsEmpty() && !fnBase.m_dirs.IsEmpty() &&
1136                 m_dirs[0u].IsSameAs(fnBase.m_dirs[0u], withCase) )
1137     {
1138         m_dirs.RemoveAt(0);
1139         fnBase.m_dirs.RemoveAt(0);
1140     }
1141
1142     // add as many ".." as needed
1143     size_t count = fnBase.m_dirs.GetCount();
1144     for ( size_t i = 0; i < count; i++ )
1145     {
1146         m_dirs.Insert(wxT(".."), 0u);
1147     }
1148
1149     if ( format == wxPATH_UNIX || format == wxPATH_DOS )
1150     {
1151         // a directory made relative with respect to itself is '.' under Unix
1152         // and DOS, by definition (but we don't have to insert "./" for the
1153         // files)
1154         if ( m_dirs.IsEmpty() && IsDir() )
1155         {
1156             m_dirs.Add(_T('.'));
1157         }
1158     }
1159
1160     m_relative = true;
1161
1162     // we were modified
1163     return true;
1164 }
1165
1166 // ----------------------------------------------------------------------------
1167 // filename kind tests
1168 // ----------------------------------------------------------------------------
1169
1170 bool wxFileName::SameAs(const wxFileName& filepath, wxPathFormat format) const
1171 {
1172     wxFileName fn1 = *this,
1173                fn2 = filepath;
1174
1175     // get cwd only once - small time saving
1176     wxString cwd = wxGetCwd();
1177     fn1.Normalize(wxPATH_NORM_ALL | wxPATH_NORM_CASE, cwd, format);
1178     fn2.Normalize(wxPATH_NORM_ALL | wxPATH_NORM_CASE, cwd, format);
1179
1180     if ( fn1.GetFullPath() == fn2.GetFullPath() )
1181         return true;
1182
1183     // TODO: compare inodes for Unix, this works even when filenames are
1184     //       different but files are the same (symlinks) (VZ)
1185
1186     return false;
1187 }
1188
1189 /* static */
1190 bool wxFileName::IsCaseSensitive( wxPathFormat format )
1191 {
1192     // only Unix filenames are truely case-sensitive
1193     return GetFormat(format) == wxPATH_UNIX;
1194 }
1195
1196 /* static */
1197 wxString wxFileName::GetForbiddenChars(wxPathFormat format)
1198 {
1199     // Inits to forbidden characters that are common to (almost) all platforms.
1200     wxString strForbiddenChars = wxT("*?");
1201
1202     // If asserts, wxPathFormat has been changed. In case of a new path format
1203     // addition, the following code might have to be updated.
1204     wxCOMPILE_TIME_ASSERT(wxPATH_MAX == 5, wxPathFormatChanged);
1205     switch ( GetFormat(format) )
1206     {
1207         default :
1208             wxFAIL_MSG( wxT("Unknown path format") );
1209             // !! Fall through !!
1210
1211         case wxPATH_UNIX:
1212             break;
1213
1214         case wxPATH_MAC:
1215             // On a Mac even names with * and ? are allowed (Tested with OS
1216             // 9.2.1 and OS X 10.2.5)
1217             strForbiddenChars = wxEmptyString;
1218             break;
1219
1220         case wxPATH_DOS:
1221             strForbiddenChars += wxT("\\/:\"<>|");
1222             break;
1223
1224         case wxPATH_VMS:
1225             break;
1226     }
1227
1228     return strForbiddenChars;
1229 }
1230
1231 /* static */
1232 wxString wxFileName::GetVolumeSeparator(wxPathFormat format)
1233 {
1234     wxString sepVol;
1235
1236     if ( (GetFormat(format) == wxPATH_DOS) ||
1237          (GetFormat(format) == wxPATH_VMS) )
1238     {
1239         sepVol = wxFILE_SEP_DSK;
1240     }
1241     //else: leave empty
1242
1243     return sepVol;
1244 }
1245
1246 /* static */
1247 wxString wxFileName::GetPathSeparators(wxPathFormat format)
1248 {
1249     wxString seps;
1250     switch ( GetFormat(format) )
1251     {
1252         case wxPATH_DOS:
1253             // accept both as native APIs do but put the native one first as
1254             // this is the one we use in GetFullPath()
1255             seps << wxFILE_SEP_PATH_DOS << wxFILE_SEP_PATH_UNIX;
1256             break;
1257
1258         default:
1259             wxFAIL_MSG( _T("Unknown wxPATH_XXX style") );
1260             // fall through
1261
1262         case wxPATH_UNIX:
1263             seps = wxFILE_SEP_PATH_UNIX;
1264             break;
1265
1266         case wxPATH_MAC:
1267             seps = wxFILE_SEP_PATH_MAC;
1268             break;
1269
1270         case wxPATH_VMS:
1271             seps = wxFILE_SEP_PATH_VMS;
1272             break;
1273     }
1274
1275     return seps;
1276 }
1277
1278 /* static */
1279 wxString wxFileName::GetPathTerminators(wxPathFormat format)
1280 {
1281     format = GetFormat(format);
1282
1283     // under VMS the end of the path is ']', not the path separator used to
1284     // separate the components
1285     return format == wxPATH_VMS ? wxString(_T(']')) : GetPathSeparators(format);
1286 }
1287
1288 /* static */
1289 bool wxFileName::IsPathSeparator(wxChar ch, wxPathFormat format)
1290 {
1291     // wxString::Find() doesn't work as expected with NUL - it will always find
1292     // it, so test for it separately
1293     return ch != _T('\0') && GetPathSeparators(format).Find(ch) != wxNOT_FOUND;
1294 }
1295
1296 // ----------------------------------------------------------------------------
1297 // path components manipulation
1298 // ----------------------------------------------------------------------------
1299
1300 /* static */ bool wxFileName::IsValidDirComponent(const wxString& dir)
1301 {
1302     if ( dir.empty() )
1303     {
1304         wxFAIL_MSG( _T("empty directory passed to wxFileName::InsertDir()") );
1305
1306         return false;
1307     }
1308
1309     const size_t len = dir.length();
1310     for ( size_t n = 0; n < len; n++ )
1311     {
1312         if ( dir[n] == GetVolumeSeparator() || IsPathSeparator(dir[n]) )
1313         {
1314             wxFAIL_MSG( _T("invalid directory component in wxFileName") );
1315
1316             return false;
1317         }
1318     }
1319
1320     return true;
1321 }
1322
1323 void wxFileName::AppendDir( const wxString &dir )
1324 {
1325     if ( IsValidDirComponent(dir) )
1326         m_dirs.Add( dir );
1327 }
1328
1329 void wxFileName::PrependDir( const wxString &dir )
1330 {
1331     InsertDir(0, dir);
1332 }
1333
1334 void wxFileName::InsertDir( int before, const wxString &dir )
1335 {
1336     if ( IsValidDirComponent(dir) )
1337         m_dirs.Insert( dir, before );
1338 }
1339
1340 void wxFileName::RemoveDir( int pos )
1341 {
1342     m_dirs.RemoveAt( (size_t)pos );
1343 }
1344
1345 // ----------------------------------------------------------------------------
1346 // accessors
1347 // ----------------------------------------------------------------------------
1348
1349 void wxFileName::SetFullName(const wxString& fullname)
1350 {
1351     SplitPath(fullname, NULL /* no path */, &m_name, &m_ext);
1352 }
1353
1354 wxString wxFileName::GetFullName() const
1355 {
1356     wxString fullname = m_name;
1357     if ( !m_ext.empty() )
1358     {
1359         fullname << wxFILE_SEP_EXT << m_ext;
1360     }
1361
1362     return fullname;
1363 }
1364
1365 wxString wxFileName::GetPath( int flags, wxPathFormat format ) const
1366 {
1367     format = GetFormat( format );
1368
1369     wxString fullpath;
1370
1371     // return the volume with the path as well if requested
1372     if ( flags & wxPATH_GET_VOLUME )
1373     {
1374         fullpath += wxGetVolumeString(GetVolume(), format);
1375     }
1376
1377     // the leading character
1378     switch ( format )
1379     {
1380         case wxPATH_MAC:
1381             if ( m_relative )
1382                 fullpath += wxFILE_SEP_PATH_MAC;
1383             break;
1384
1385         case wxPATH_DOS:
1386             if ( !m_relative )
1387                 fullpath += wxFILE_SEP_PATH_DOS;
1388             break;
1389
1390         default:
1391             wxFAIL_MSG( wxT("Unknown path format") );
1392             // fall through
1393
1394         case wxPATH_UNIX:
1395             if ( !m_relative )
1396             {
1397                 // normally the absolute file names start with a slash
1398                 // with one exception: the ones like "~/foo.bar" don't
1399                 // have it
1400                 if ( m_dirs.IsEmpty() || m_dirs[0u] != _T('~') )
1401                 {
1402                     fullpath += wxFILE_SEP_PATH_UNIX;
1403                 }
1404             }
1405             break;
1406
1407         case wxPATH_VMS:
1408             // no leading character here but use this place to unset
1409             // wxPATH_GET_SEPARATOR flag: under VMS it doesn't make sense
1410             // as, if I understand correctly, there should never be a dot
1411             // before the closing bracket
1412             flags &= ~wxPATH_GET_SEPARATOR;
1413     }
1414
1415     if ( m_dirs.empty() )
1416     {
1417         // there is nothing more
1418         return fullpath;
1419     }
1420
1421     // then concatenate all the path components using the path separator
1422     if ( format == wxPATH_VMS )
1423     {
1424         fullpath += wxT('[');
1425     }
1426
1427     const size_t dirCount = m_dirs.GetCount();
1428     for ( size_t i = 0; i < dirCount; i++ )
1429     {
1430         switch (format)
1431         {
1432             case wxPATH_MAC:
1433                 if ( m_dirs[i] == wxT(".") )
1434                 {
1435                     // skip appending ':', this shouldn't be done in this
1436                     // case as "::" is interpreted as ".." under Unix
1437                     continue;
1438                 }
1439
1440                 // convert back from ".." to nothing
1441                 if ( m_dirs[i] != wxT("..") )
1442                      fullpath += m_dirs[i];
1443                 break;
1444
1445             default:
1446                 wxFAIL_MSG( wxT("Unexpected path format") );
1447                 // still fall through
1448
1449             case wxPATH_DOS:
1450             case wxPATH_UNIX:
1451                 fullpath += m_dirs[i];
1452                 break;
1453
1454             case wxPATH_VMS:
1455                 // TODO: What to do with ".." under VMS
1456
1457                 // convert back from ".." to nothing
1458                 if ( m_dirs[i] != wxT("..") )
1459                     fullpath += m_dirs[i];
1460                 break;
1461         }
1462
1463         if ( (flags & wxPATH_GET_SEPARATOR) || (i != dirCount - 1) )
1464             fullpath += GetPathSeparator(format);
1465     }
1466
1467     if ( format == wxPATH_VMS )
1468     {
1469         fullpath += wxT(']');
1470     }
1471
1472     return fullpath;
1473 }
1474
1475 wxString wxFileName::GetFullPath( wxPathFormat format ) const
1476 {
1477     // we already have a function to get the path
1478     wxString fullpath = GetPath(wxPATH_GET_VOLUME | wxPATH_GET_SEPARATOR,
1479                                 format);
1480
1481     // now just add the file name and extension to it
1482     fullpath += GetFullName();
1483
1484     return fullpath;
1485 }
1486
1487 // Return the short form of the path (returns identity on non-Windows platforms)
1488 wxString wxFileName::GetShortPath() const
1489 {
1490 #if defined(__WXMSW__) && defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
1491     wxString path(GetFullPath());
1492     wxString pathOut;
1493     DWORD sz = ::GetShortPathName(path, NULL, 0);
1494     bool ok = sz != 0;
1495     if ( ok )
1496     {
1497         ok = ::GetShortPathName
1498                (
1499                 path,
1500                 wxStringBuffer(pathOut, sz),
1501                 sz
1502                ) != 0;
1503     }
1504     if (ok)
1505         return pathOut;
1506
1507     return path;
1508 #else
1509     return GetFullPath();
1510 #endif
1511 }
1512
1513 // Return the long form of the path (returns identity on non-Windows platforms)
1514 wxString wxFileName::GetLongPath() const
1515 {
1516     wxString pathOut,
1517              path = GetFullPath();
1518
1519 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
1520     bool success = false;
1521
1522 #if wxUSE_DYNAMIC_LOADER
1523     typedef DWORD (WINAPI *GET_LONG_PATH_NAME)(const wxChar *, wxChar *, DWORD);
1524
1525     static bool s_triedToLoad = false;
1526
1527     if ( !s_triedToLoad )
1528     {
1529         // suppress the errors about missing GetLongPathName[AW]
1530         wxLogNull noLog;
1531
1532         s_triedToLoad = true;
1533         wxDynamicLibrary dllKernel(_T("kernel32"));
1534         if ( dllKernel.IsLoaded() )
1535         {
1536             // may succeed or fail depending on the Windows version
1537             static GET_LONG_PATH_NAME s_pfnGetLongPathName = NULL;
1538 #ifdef _UNICODE
1539             s_pfnGetLongPathName = (GET_LONG_PATH_NAME) dllKernel.GetSymbol(_T("GetLongPathNameW"));
1540 #else
1541             s_pfnGetLongPathName = (GET_LONG_PATH_NAME) dllKernel.GetSymbol(_T("GetLongPathNameA"));
1542 #endif
1543
1544             if ( s_pfnGetLongPathName )
1545             {
1546                 DWORD dwSize = (*s_pfnGetLongPathName)(path, NULL, 0);
1547                 bool ok = dwSize > 0;
1548
1549                 if ( ok )
1550                 {
1551                     DWORD sz = (*s_pfnGetLongPathName)(path, NULL, 0);
1552                     ok = sz != 0;
1553                     if ( ok )
1554                     {
1555                         ok = (*s_pfnGetLongPathName)
1556                                 (
1557                                 path,
1558                                 wxStringBuffer(pathOut, sz),
1559                                 sz
1560                                 ) != 0;
1561                         success = true;
1562                     }
1563                 }
1564             }
1565         }
1566     }
1567
1568     if (success)
1569         return pathOut;
1570 #endif // wxUSE_DYNAMIC_LOADER
1571
1572     if (!success)
1573     {
1574         // The OS didn't support GetLongPathName, or some other error.
1575         // We need to call FindFirstFile on each component in turn.
1576
1577         WIN32_FIND_DATA findFileData;
1578         HANDLE hFind;
1579
1580         if ( HasVolume() )
1581             pathOut = GetVolume() +
1582                       GetVolumeSeparator(wxPATH_DOS) +
1583                       GetPathSeparator(wxPATH_DOS);
1584         else
1585             pathOut = wxEmptyString;
1586
1587         wxArrayString dirs = GetDirs();
1588         dirs.Add(GetFullName());
1589
1590         wxString tmpPath;
1591
1592         size_t count = dirs.GetCount();
1593         for ( size_t i = 0; i < count; i++ )
1594         {
1595             // We're using pathOut to collect the long-name path, but using a
1596             // temporary for appending the last path component which may be
1597             // short-name
1598             tmpPath = pathOut + dirs[i];
1599
1600             if ( tmpPath.empty() )
1601                 continue;
1602
1603             // can't see this being necessary? MF
1604             if ( tmpPath.Last() == GetVolumeSeparator(wxPATH_DOS) )
1605             {
1606                 // Can't pass a drive and root dir to FindFirstFile,
1607                 // so continue to next dir
1608                 tmpPath += wxFILE_SEP_PATH;
1609                 pathOut = tmpPath;
1610                 continue;
1611             }
1612
1613             hFind = ::FindFirstFile(tmpPath, &findFileData);
1614             if (hFind == INVALID_HANDLE_VALUE)
1615             {
1616                 // Error: most likely reason is that path doesn't exist, so
1617                 // append any unprocessed parts and return
1618                 for ( i += 1; i < count; i++ )
1619                     tmpPath += wxFILE_SEP_PATH + dirs[i];
1620
1621                 return tmpPath;
1622             }
1623
1624             pathOut += findFileData.cFileName;
1625             if ( (i < (count-1)) )
1626                 pathOut += wxFILE_SEP_PATH;
1627
1628             ::FindClose(hFind);
1629         }
1630     }
1631 #else // !Win32
1632     pathOut = path;
1633 #endif // Win32/!Win32
1634
1635     return pathOut;
1636 }
1637
1638 wxPathFormat wxFileName::GetFormat( wxPathFormat format )
1639 {
1640     if (format == wxPATH_NATIVE)
1641     {
1642 #if defined(__WXMSW__) || defined(__OS2__) || defined(__DOS__)
1643         format = wxPATH_DOS;
1644 #elif defined(__WXMAC__) && !defined(__DARWIN__)
1645         format = wxPATH_MAC;
1646 #elif defined(__VMS)
1647         format = wxPATH_VMS;
1648 #else
1649         format = wxPATH_UNIX;
1650 #endif
1651     }
1652     return format;
1653 }
1654
1655 // ----------------------------------------------------------------------------
1656 // path splitting function
1657 // ----------------------------------------------------------------------------
1658
1659 /* static */
1660 void
1661 wxFileName::SplitVolume(const wxString& fullpathWithVolume,
1662                         wxString *pstrVolume,
1663                         wxString *pstrPath,
1664                         wxPathFormat format)
1665 {
1666     format = GetFormat(format);
1667
1668     wxString fullpath = fullpathWithVolume;
1669
1670     // special Windows UNC paths hack: transform \\share\path into share:path
1671     if ( format == wxPATH_DOS )
1672     {
1673         if ( fullpath.length() >= 4 &&
1674                 fullpath[0u] == wxFILE_SEP_PATH_DOS &&
1675                     fullpath[1u] == wxFILE_SEP_PATH_DOS )
1676         {
1677             fullpath.erase(0, 2);
1678
1679             size_t posFirstSlash =
1680                 fullpath.find_first_of(GetPathTerminators(format));
1681             if ( posFirstSlash != wxString::npos )
1682             {
1683                 fullpath[posFirstSlash] = wxFILE_SEP_DSK;
1684
1685                 // UNC paths are always absolute, right? (FIXME)
1686                 fullpath.insert(posFirstSlash + 1, 1, wxFILE_SEP_PATH_DOS);
1687             }
1688         }
1689     }
1690
1691     // We separate the volume here
1692     if ( format == wxPATH_DOS || format == wxPATH_VMS )
1693     {
1694         wxString sepVol = GetVolumeSeparator(format);
1695
1696         size_t posFirstColon = fullpath.find_first_of(sepVol);
1697         if ( posFirstColon != wxString::npos )
1698         {
1699             if ( pstrVolume )
1700             {
1701                 *pstrVolume = fullpath.Left(posFirstColon);
1702             }
1703
1704             // remove the volume name and the separator from the full path
1705             fullpath.erase(0, posFirstColon + sepVol.length());
1706         }
1707     }
1708
1709     if ( pstrPath )
1710         *pstrPath = fullpath;
1711 }
1712
1713 /* static */
1714 void wxFileName::SplitPath(const wxString& fullpathWithVolume,
1715                            wxString *pstrVolume,
1716                            wxString *pstrPath,
1717                            wxString *pstrName,
1718                            wxString *pstrExt,
1719                            wxPathFormat format)
1720 {
1721     format = GetFormat(format);
1722
1723     wxString fullpath;
1724     SplitVolume(fullpathWithVolume, pstrVolume, &fullpath, format);
1725
1726     // find the positions of the last dot and last path separator in the path
1727     size_t posLastDot = fullpath.find_last_of(wxFILE_SEP_EXT);
1728     size_t posLastSlash = fullpath.find_last_of(GetPathTerminators(format));
1729
1730     // check whether this dot occurs at the very beginning of a path component
1731     if ( (posLastDot != wxString::npos) &&
1732          (posLastDot == 0 ||
1733             IsPathSeparator(fullpath[posLastDot - 1]) ||
1734             (format == wxPATH_VMS && fullpath[posLastDot - 1] == _T(']'))) )
1735     {
1736         // dot may be (and commonly -- at least under Unix -- is) the first
1737         // character of the filename, don't treat the entire filename as
1738         // extension in this case
1739         posLastDot = wxString::npos;
1740     }
1741
1742     // if we do have a dot and a slash, check that the dot is in the name part
1743     if ( (posLastDot != wxString::npos) &&
1744          (posLastSlash != wxString::npos) &&
1745          (posLastDot < posLastSlash) )
1746     {
1747         // the dot is part of the path, not the start of the extension
1748         posLastDot = wxString::npos;
1749     }
1750
1751     // now fill in the variables provided by user
1752     if ( pstrPath )
1753     {
1754         if ( posLastSlash == wxString::npos )
1755         {
1756             // no path at all
1757             pstrPath->Empty();
1758         }
1759         else
1760         {
1761             // take everything up to the path separator but take care to make
1762             // the path equal to something like '/', not empty, for the files
1763             // immediately under root directory
1764             size_t len = posLastSlash;
1765
1766             // this rule does not apply to mac since we do not start with colons (sep)
1767             // except for relative paths
1768             if ( !len && format != wxPATH_MAC)
1769                 len++;
1770
1771             *pstrPath = fullpath.Left(len);
1772
1773             // special VMS hack: remove the initial bracket
1774             if ( format == wxPATH_VMS )
1775             {
1776                 if ( (*pstrPath)[0u] == _T('[') )
1777                     pstrPath->erase(0, 1);
1778             }
1779         }
1780     }
1781
1782     if ( pstrName )
1783     {
1784         // take all characters starting from the one after the last slash and
1785         // up to, but excluding, the last dot
1786         size_t nStart = posLastSlash == wxString::npos ? 0 : posLastSlash + 1;
1787         size_t count;
1788         if ( posLastDot == wxString::npos )
1789         {
1790             // take all until the end
1791             count = wxString::npos;
1792         }
1793         else if ( posLastSlash == wxString::npos )
1794         {
1795             count = posLastDot;
1796         }
1797         else // have both dot and slash
1798         {
1799             count = posLastDot - posLastSlash - 1;
1800         }
1801
1802         *pstrName = fullpath.Mid(nStart, count);
1803     }
1804
1805     if ( pstrExt )
1806     {
1807         if ( posLastDot == wxString::npos )
1808         {
1809             // no extension
1810             pstrExt->Empty();
1811         }
1812         else
1813         {
1814             // take everything after the dot
1815             *pstrExt = fullpath.Mid(posLastDot + 1);
1816         }
1817     }
1818 }
1819
1820 /* static */
1821 void wxFileName::SplitPath(const wxString& fullpath,
1822                            wxString *path,
1823                            wxString *name,
1824                            wxString *ext,
1825                            wxPathFormat format)
1826 {
1827     wxString volume;
1828     SplitPath(fullpath, &volume, path, name, ext, format);
1829
1830     if ( path )
1831     {
1832         path->Prepend(wxGetVolumeString(volume, format));
1833     }
1834 }
1835
1836 // ----------------------------------------------------------------------------
1837 // time functions
1838 // ----------------------------------------------------------------------------
1839
1840 #if wxUSE_DATETIME
1841
1842 bool wxFileName::SetTimes(const wxDateTime *dtAccess,
1843                           const wxDateTime *dtMod,
1844                           const wxDateTime *dtCreate)
1845 {
1846 #if defined(__WIN32__)
1847     if ( IsDir() )
1848     {
1849         // VZ: please let me know how to do this if you can
1850         wxFAIL_MSG( _T("SetTimes() not implemented for the directories") );
1851     }
1852     else // file
1853     {
1854         wxFileHandle fh(GetFullPath(), wxFileHandle::Write);
1855         if ( fh.IsOk() )
1856         {
1857             FILETIME ftAccess, ftCreate, ftWrite;
1858
1859             if ( dtCreate )
1860                 ConvertWxToFileTime(&ftCreate, *dtCreate);
1861             if ( dtAccess )
1862                 ConvertWxToFileTime(&ftAccess, *dtAccess);
1863             if ( dtMod )
1864                 ConvertWxToFileTime(&ftWrite, *dtMod);
1865
1866             if ( ::SetFileTime(fh,
1867                                dtCreate ? &ftCreate : NULL,
1868                                dtAccess ? &ftAccess : NULL,
1869                                dtMod ? &ftWrite : NULL) )
1870             {
1871                 return true;
1872             }
1873         }
1874     }
1875 #elif defined(__UNIX_LIKE__) || (defined(__DOS__) && defined(__WATCOMC__))
1876     if ( !dtAccess && !dtMod )
1877     {
1878         // can't modify the creation time anyhow, don't try
1879         return true;
1880     }
1881
1882     // if dtAccess or dtMod is not specified, use the other one (which must be
1883     // non NULL because of the test above) for both times
1884     utimbuf utm;
1885     utm.actime = dtAccess ? dtAccess->GetTicks() : dtMod->GetTicks();
1886     utm.modtime = dtMod ? dtMod->GetTicks() : dtAccess->GetTicks();
1887     if ( utime(GetFullPath().fn_str(), &utm) == 0 )
1888     {
1889         return true;
1890     }
1891 #else // other platform
1892 #endif // platforms
1893
1894     wxLogSysError(_("Failed to modify file times for '%s'"),
1895                   GetFullPath().c_str());
1896
1897     return false;
1898 }
1899
1900 bool wxFileName::Touch()
1901 {
1902 #if defined(__UNIX_LIKE__)
1903     // under Unix touching file is simple: just pass NULL to utime()
1904     if ( utime(GetFullPath().fn_str(), NULL) == 0 )
1905     {
1906         return true;
1907     }
1908
1909     wxLogSysError(_("Failed to touch the file '%s'"), GetFullPath().c_str());
1910
1911     return false;
1912 #else // other platform
1913     wxDateTime dtNow = wxDateTime::Now();
1914
1915     return SetTimes(&dtNow, &dtNow, NULL /* don't change create time */);
1916 #endif // platforms
1917 }
1918
1919 bool wxFileName::GetTimes(wxDateTime *dtAccess,
1920                           wxDateTime *dtMod,
1921                           wxDateTime *dtCreate) const
1922 {
1923 #if defined(__WIN32__)
1924     // we must use different methods for the files and directories under
1925     // Windows as CreateFile(GENERIC_READ) doesn't work for the directories and
1926     // CreateFile(FILE_FLAG_BACKUP_SEMANTICS) works -- but only under NT and
1927     // not 9x
1928     bool ok;
1929     FILETIME ftAccess, ftCreate, ftWrite;
1930     if ( IsDir() )
1931     {
1932         // implemented in msw/dir.cpp
1933         extern bool wxGetDirectoryTimes(const wxString& dirname,
1934                                         FILETIME *, FILETIME *, FILETIME *);
1935
1936         // we should pass the path without the trailing separator to
1937         // wxGetDirectoryTimes()
1938         ok = wxGetDirectoryTimes(GetPath(wxPATH_GET_VOLUME),
1939                                  &ftAccess, &ftCreate, &ftWrite);
1940     }
1941     else // file
1942     {
1943         wxFileHandle fh(GetFullPath(), wxFileHandle::Read);
1944         if ( fh.IsOk() )
1945         {
1946             ok = ::GetFileTime(fh,
1947                                dtCreate ? &ftCreate : NULL,
1948                                dtAccess ? &ftAccess : NULL,
1949                                dtMod ? &ftWrite : NULL) != 0;
1950         }
1951         else
1952         {
1953             ok = false;
1954         }
1955     }
1956
1957     if ( ok )
1958     {
1959         if ( dtCreate )
1960             ConvertFileTimeToWx(dtCreate, ftCreate);
1961         if ( dtAccess )
1962             ConvertFileTimeToWx(dtAccess, ftAccess);
1963         if ( dtMod )
1964             ConvertFileTimeToWx(dtMod, ftWrite);
1965
1966         return true;
1967     }
1968 #elif defined(__UNIX_LIKE__) || defined(__WXMAC__) || (defined(__DOS__) && defined(__WATCOMC__))
1969     wxStructStat stBuf;
1970     if ( wxStat( GetFullPath().c_str(), &stBuf) == 0 )
1971     {
1972         if ( dtAccess )
1973             dtAccess->Set(stBuf.st_atime);
1974         if ( dtMod )
1975             dtMod->Set(stBuf.st_mtime);
1976         if ( dtCreate )
1977             dtCreate->Set(stBuf.st_ctime);
1978
1979         return true;
1980     }
1981 #else // other platform
1982 #endif // platforms
1983
1984     wxLogSysError(_("Failed to retrieve file times for '%s'"),
1985                   GetFullPath().c_str());
1986
1987     return false;
1988 }
1989
1990 #endif // wxUSE_DATETIME
1991
1992 #ifdef __WXMAC__
1993
1994 const short kMacExtensionMaxLength = 16 ;
1995 class MacDefaultExtensionRecord
1996 {
1997 public :
1998   MacDefaultExtensionRecord()
1999   {
2000     m_ext[0] = 0 ;
2001     m_type = m_creator = 0 ;
2002   }
2003   MacDefaultExtensionRecord( const MacDefaultExtensionRecord& from )
2004   {
2005     wxStrcpy( m_ext , from.m_ext ) ;
2006     m_type = from.m_type ;
2007     m_creator = from.m_creator ;
2008   }
2009   MacDefaultExtensionRecord( const wxChar * extension , OSType type , OSType creator )
2010   {
2011     wxStrncpy( m_ext , extension , kMacExtensionMaxLength ) ;
2012     m_ext[kMacExtensionMaxLength] = 0 ;
2013     m_type = type ;
2014     m_creator = creator ;
2015   }
2016   wxChar m_ext[kMacExtensionMaxLength] ;
2017   OSType m_type ;
2018   OSType m_creator ;
2019 }  ;
2020
2021 #include "wx/dynarray.h"
2022 WX_DECLARE_OBJARRAY(MacDefaultExtensionRecord, MacDefaultExtensionArray) ;
2023
2024 bool gMacDefaultExtensionsInited = false ;
2025
2026 #include "wx/arrimpl.cpp"
2027
2028 WX_DEFINE_EXPORTED_OBJARRAY(MacDefaultExtensionArray) ;
2029
2030 MacDefaultExtensionArray gMacDefaultExtensions ;
2031
2032 // load the default extensions
2033 MacDefaultExtensionRecord gDefaults[] =
2034 {
2035     MacDefaultExtensionRecord( wxT("txt") , 'TEXT' , 'ttxt' ) ,
2036     MacDefaultExtensionRecord( wxT("tif") , 'TIFF' , '****' ) ,
2037     MacDefaultExtensionRecord( wxT("jpg") , 'JPEG' , '****' ) ,
2038 } ;
2039
2040 static void MacEnsureDefaultExtensionsLoaded()
2041 {
2042     if ( !gMacDefaultExtensionsInited )
2043     {
2044         // we could load the pc exchange prefs here too
2045         for ( size_t i = 0 ; i < WXSIZEOF( gDefaults ) ; ++i )
2046         {
2047             gMacDefaultExtensions.Add( gDefaults[i] ) ;
2048         }
2049         gMacDefaultExtensionsInited = true ;
2050     }
2051 }
2052
2053 bool wxFileName::MacSetTypeAndCreator( wxUint32 type , wxUint32 creator )
2054 {
2055     FSRef fsRef ;
2056     FSCatalogInfo catInfo;
2057     FileInfo *finfo ;
2058
2059     if ( wxMacPathToFSRef( GetFullPath() , &fsRef ) == noErr )
2060     {
2061         if ( FSGetCatalogInfo (&fsRef, kFSCatInfoFinderInfo, &catInfo, NULL, NULL, NULL) == noErr )
2062         {
2063             finfo = (FileInfo*)&catInfo.finderInfo;
2064             finfo->fileType = type ;
2065             finfo->fileCreator = creator ;
2066             FSSetCatalogInfo( &fsRef, kFSCatInfoFinderInfo, &catInfo ) ;
2067             return true ;
2068         }
2069     }
2070     return false ;
2071 }
2072
2073 bool wxFileName::MacGetTypeAndCreator( wxUint32 *type , wxUint32 *creator )
2074 {
2075     FSRef fsRef ;
2076     FSCatalogInfo catInfo;
2077     FileInfo *finfo ;
2078
2079     if ( wxMacPathToFSRef( GetFullPath() , &fsRef ) == noErr )
2080     {
2081         if ( FSGetCatalogInfo (&fsRef, kFSCatInfoFinderInfo, &catInfo, NULL, NULL, NULL) == noErr )
2082         {
2083             finfo = (FileInfo*)&catInfo.finderInfo;
2084             *type = finfo->fileType ;
2085             *creator = finfo->fileCreator ;
2086             return true ;
2087         }
2088     }
2089     return false ;
2090 }
2091
2092 bool wxFileName::MacSetDefaultTypeAndCreator()
2093 {
2094     wxUint32 type , creator ;
2095     if ( wxFileName::MacFindDefaultTypeAndCreator(GetExt() , &type ,
2096       &creator ) )
2097     {
2098         return MacSetTypeAndCreator( type , creator ) ;
2099     }
2100     return false;
2101 }
2102
2103 bool wxFileName::MacFindDefaultTypeAndCreator( const wxString& ext , wxUint32 *type , wxUint32 *creator )
2104 {
2105   MacEnsureDefaultExtensionsLoaded() ;
2106   wxString extl = ext.Lower() ;
2107   for( int i = gMacDefaultExtensions.Count() - 1 ; i >= 0 ; --i )
2108   {
2109     if ( gMacDefaultExtensions.Item(i).m_ext == extl )
2110     {
2111       *type = gMacDefaultExtensions.Item(i).m_type ;
2112       *creator = gMacDefaultExtensions.Item(i).m_creator ;
2113       return true ;
2114     }
2115   }
2116   return false ;
2117 }
2118
2119 void wxFileName::MacRegisterDefaultTypeAndCreator( const wxString& ext , wxUint32 type , wxUint32 creator )
2120 {
2121   MacEnsureDefaultExtensionsLoaded() ;
2122   MacDefaultExtensionRecord rec ;
2123   rec.m_type = type ;
2124   rec.m_creator = creator ;
2125   wxStrncpy( rec.m_ext , ext.Lower().c_str() , kMacExtensionMaxLength ) ;
2126   gMacDefaultExtensions.Add( rec ) ;
2127 }
2128 #endif