include/wx/filefn.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        filefn.h
   3 // Purpose:     File- and directory-related functions
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     29/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef   _FILEFN_H_
  13 #define   _FILEFN_H_
  14
  15 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  16     #pragma interface "filefn.h"
  17 #endif
  18
  19 #include "wx/list.h"
  20 #include "wx/arrstr.h"
  21
  22 #ifdef __WXWINCE__
  23     #include "wx/msw/wince/time.h"
  24     #include "wx/msw/private.h"
  25 #else
  26     #include <time.h>
  27 #endif
  28
  29 #ifdef __WXWINCE__
  30 // Nothing
  31 #elif !defined(__MWERKS__)
  32     #include <sys/types.h>
  33     #include <sys/stat.h>
  34 #else
  35     #ifdef __MACH__
  36         #include <sys/types.h>
  37         #include <utime.h>
  38         #include <sys/stat.h>
  39         #include <unistd.h>
  40     #else
  41         #include <stat.h>
  42         #include <unistd.h>
  43         #include <unix.h>
  44     #endif
  45 #endif
  46
  47 #ifdef __OS2__
  48 // need to check for __OS2__ first since currently both
  49 // __OS2__ and __UNIX__ are defined.
  50     #include <process.h>
  51     #include "wx/os2/private.h"
  52     #include <io.h>
  53     #ifdef __EMX__
  54         #include <unistd.h>
  55     #endif
  56 #elif defined(__UNIX__)
  57     #include <unistd.h>
  58     #include <dirent.h>
  59 #endif
  60
  61 #if defined(__WINDOWS__) && !defined(__WXMICROWIN__)
  62 #if !defined( __GNUWIN32__ ) && !defined( __MWERKS__ ) && !defined(__SALFORDC__) && !defined(__WXWINCE__)
  63     #include <direct.h>
  64     #include <dos.h>
  65     #include <io.h>
  66 #endif // __WINDOWS__
  67 #endif // native Win compiler
  68
  69 #if defined(__DOS__)
  70     #ifdef __WATCOMC__
  71         #include <direct.h>
  72         #include <dos.h>
  73         #include <io.h>
  74     #endif
  75     #ifdef __DJGPP__
  76         #include <io.h>
  77         #include <unistd.h>
  78     #endif
  79 #endif
  80
  81 #ifdef __BORLANDC__ // Please someone tell me which version of Borland needs
  82                     // this (3.1 I believe) and how to test for it.
  83                     // If this works for Borland 4.0 as well, then no worries.
  84     #include <dir.h>
  85 #endif
  86
  87 #ifdef __SALFORDC__
  88     #include <dir.h>
  89     #include <unix.h>
  90 #endif
  91
  92 #ifndef __WXWINCE__
  93     #include  <fcntl.h>       // O_RDONLY &c
  94 #endif
  95 // ----------------------------------------------------------------------------
  96 // constants
  97 // ----------------------------------------------------------------------------
  98
  99 #ifdef __WXWINCE__
 100     typedef long off_t;
 101 #else
 102     // define off_t
 103     #if !defined(__WXMAC__) || defined(__UNIX__) || defined(__MACH__)
 104         #include  <sys/types.h>
 105     #else
 106         typedef long off_t;
 107     #endif
 108 #endif
 109
 110 #if (defined(__VISUALC__) && !defined(__WXWINCE__)) || ( defined(__MWERKS__) && defined( __INTEL__) )
 111     typedef _off_t off_t;
 112 #elif defined(__SYMANTEC__)
 113     typedef long off_t;
 114 #elif defined(__MWERKS__) && !defined(__INTEL__) && !defined(__MACH__)
 115     typedef long off_t;
 116 #endif
 117
 118 enum wxSeekMode
 119 {
 120   wxFromStart,
 121   wxFromCurrent,
 122   wxFromEnd
 123 };
 124
 125 // ----------------------------------------------------------------------------
 126 // declare our versions of low level file functions: some compilers prepend
 127 // underscores to the usual names, some also have Unicode versions of them
 128 // ----------------------------------------------------------------------------
 129
 130 // Wrappers around Win32 api functions like CreateFile, ReadFile and such
 131 // Implemented in filefnwce.cpp
 132 #if defined( __WXWINCE__)
 133     typedef __int64 wxFileOffset;
 134     typedef unsigned __int64 wxFileSize_t;
 135     #define wxFileOffsetFmtSpec _("I64")
 136     int wxOpen(const wxChar *filename, int oflag, int WXUNUSED(pmode));
 137     int wxAccess(const wxChar *name, int WXUNUSED(how));
 138     int wxClose(int fd);
 139     int wxFsync(int WXUNUSED(fd));
 140     int wxRead(int fd, void *buf, unsigned int count);
 141     int wxWrite(int fd, const void *buf, unsigned int count);
 142     int wxEof(int fd);
 143     wxFileOffset wxSeek(int fd, wxFileOffset offset, int origin);
 144     #define wxLSeek wxSeek
 145     wxFileOffset wxTell(int fd);
 146
 147     #if wxUSE_UNICODE
 148         #if wxUSE_UNICODE_MSLU
 149             #define   wxMkDir      wxMSLU__wmkdir
 150             #define   wxRmDir      wxMSLU__wrmdir
 151             #define   wxStat       wxMSLU__wstat
 152         #else
 153             #define   wxMkDir      _wmkdir
 154             #define   wxRmDir      _wrmdir
 155             #define   wxStat       _wstat
 156         #endif
 157     #else // !wxUSE_UNICODE
 158         #define   wxMkDir      _mkdir
 159         #ifdef __WATCOMC__
 160             #define   wxRmDir      rmdir
 161         #else
 162             #define   wxRmDir      _rmdir
 163         #endif
 164         #define   wxStat       _stat
 165     #endif
 166     #define   wxStructStat struct _stat
 167
 168 // Microsoft compiler loves underscores, feed them to it
 169 #elif defined( __VISUALC__ ) \
 170     || ( defined(__MINGW32__) && !defined(__WINE__) && wxCHECK_W32API_VERSION( 0, 5 ) ) \
 171     || ( defined(__MWERKS__) && defined(__WXMSW__) ) \
 172     || ( defined(__DMC__) && defined(__WXMSW__) ) \
 173     || ( defined(__WATCOMC__) && defined(__WXMSW__) )
 174
 175     // detect compilers which have support for huge files (currently only
 176     // Digital Mars doesn't)
 177     #ifndef __PALMOS__
 178     #include "wx/msw/private.h"
 179     #endif
 180
 181     #undef wxHAS_HUGE_FILES
 182     #if defined(__MINGW32__)
 183         #define wxHAS_HUGE_FILES 1
 184     #elif defined(__MWERKS__)
 185         #define wxHAS_HUGE_FILES 0
 186     #elif defined(__DMC__)
 187         #define wxHAS_HUGE_FILES 0
 188     #elif ((_INTEGRAL_MAX_BITS >= 64) || defined(_LARGE_FILES))
 189         #define wxHAS_HUGE_FILES 1
 190     #else
 191         #define wxHAS_HUGE_FILES 0
 192     #endif
 193
 194     // functions
 195     #if defined(__BORLANDC__) || defined(__WATCOMC__)
 196         #define   _tell        tell
 197     #endif
 198
 199     #if wxHAS_HUGE_FILES
 200         typedef wxLongLong_t wxFileOffset;
 201         typedef unsigned wxLongLong_t wxFileSize_t;
 202         #define wxFileOffsetFmtSpec wxLongLongFmtSpec
 203     #else
 204         typedef off_t wxFileOffset;
 205         typedef unsigned long wxFileSize_t;
 206     #endif
 207
 208     #define   wxClose      _close
 209
 210     #if defined(__MWERKS__)
 211         #if __MSL__ >= 0x6000
 212             #define wxRead(fd, buf, nCount)  _read(fd, (void *)buf, nCount)
 213             #define wxWrite(fd, buf, nCount) _write(fd, (void *)buf, nCount)
 214         #else
 215             #define wxRead(fd, buf, nCount)\
 216                   _read(fd, (const char *)buf, nCount)
 217             #define wxWrite(fd, buf, nCount)\
 218                   _write(fd, (const char *)buf, nCount)
 219         #endif
 220     #else
 221         #if defined(__WATCOMC__)
 222             inline wxFileSize_t wxRead( int handle, void *buffer, wxFileSize_t len )
 223                                 { return ::read( handle, buffer, (unsigned int)len ); }
 224             inline wxFileSize_t wxWrite( int handle, const void *buffer, wxFileSize_t len )
 225                                 { return ::write( handle, buffer, (unsigned int)len ); }
 226         #elif defined(__DMC__)
 227             #define wxRead        ::read
 228             #define wxWrite       ::write
 229         #else
 230             #define wxRead        _read
 231             #define wxWrite        _write
 232         #endif
 233     #endif
 234     #if wxHAS_HUGE_FILES
 235         #define   wxSeek      _lseeki64
 236         #define   wxLseek      _lseeki64
 237         #define   wxTell       _telli64
 238     #else
 239         #define   wxSeek      _lseek
 240         #define   wxLseek      _lseek
 241         #define   wxTell       _tell
 242     #endif
 243     #define   wxFsync      _commit
 244     #if defined(__WATCOMC__)
 245         #define   wxEof        ::eof
 246     #else
 247         #define   wxEof        _eof
 248     #endif
 249
 250     #if wxUSE_UNICODE
 251         #if wxUSE_UNICODE_MSLU
 252             #define   wxOpen       wxMSLU__wopen
 253
 254             #define   wxAccess     wxMSLU__waccess
 255             #define   wxMkDir      wxMSLU__wmkdir
 256             #define   wxRmDir      wxMSLU__wrmdir
 257             #if wxHAS_HUGE_FILES
 258                 #define   wxStat       wxMSLU__wstati64
 259             #else
 260                 #define   wxStat       wxMSLU__wstat
 261             #endif
 262         #else
 263             #define   wxOpen       _wopen
 264             #define   wxAccess     _waccess
 265             #define   wxMkDir      _wmkdir
 266             #define   wxRmDir      _wrmdir
 267             #if wxHAS_HUGE_FILES
 268                 #define   wxStat       _wstati64
 269             #else
 270                 #define   wxStat       _wstat
 271             #endif
 272         #endif
 273     #else // !wxUSE_UNICODE
 274         #ifdef __BORLANDC__
 275             #define   wxOpen       open
 276         #else
 277             #define   wxOpen       _open
 278         #endif
 279         #define   wxAccess     _access
 280         #define   wxMkDir      _mkdir
 281         #ifdef __WATCOMC__
 282             #define   wxRmDir      rmdir
 283         #else
 284             #define   wxRmDir      _rmdir
 285         #endif
 286         #if wxHAS_HUGE_FILES
 287             #define   wxStat       _stati64
 288         #else
 289             #define   wxStat       _stat
 290         #endif
 291     #endif
 292
 293     // types: notice that Watcom is the only compiler to have a wide char
 294     // version of struct stat as well as a wide char stat function variant
 295     #if wxHAS_HUGE_FILES
 296         #if wxUSE_UNICODE && defined(__WATCOMC__)
 297             #define   wxStructStat struct _wstati64
 298         #else
 299             #define   wxStructStat struct _stati64
 300         #endif
 301     #else
 302         #if wxUSE_UNICODE && defined(__WATCOMC__)
 303             #define   wxStructStat struct _wstat
 304         #else
 305             #define   wxStructStat struct _stat
 306         #endif
 307     #endif
 308
 309     // constants (unless already defined by the user code)
 310     #if !defined(__BORLANDC__) && !defined(__WATCOMC__) && !defined(__PALMOS__)
 311         #ifndef O_RDONLY
 312             #define   O_RDONLY    _O_RDONLY
 313             #define   O_WRONLY    _O_WRONLY
 314             #define   O_RDWR      _O_RDWR
 315             #define   O_EXCL      _O_EXCL
 316             #define   O_CREAT     _O_CREAT
 317             #define   O_BINARY    _O_BINARY
 318         #endif
 319
 320         #ifndef S_IFMT
 321             #define   S_IFMT      _S_IFMT
 322             #define   S_IFDIR     _S_IFDIR
 323             #define   S_IFREG     _S_IFREG
 324         #endif
 325     #endif
 326
 327     // It's a private define, undefine it so nobody gets tempted to use it
 328     #undef wxHAS_HUGE_FILES
 329 #else // Unix platforms using configure
 330     typedef off_t wxFileOffset;
 331     #ifdef _LARGE_FILES
 332         #define wxFileOffsetFmtSpec wxLongLongFmtSpec
 333         wxCOMPILE_TIME_ASSERT( sizeof(off_t) == sizeof(wxLongLong_t),
 334                                 BadFileSizeType );
 335         typedef unsigned wxLongLong_t wxFileSize_t;
 336     #else
 337         #define wxFileOffsetFmtSpec _T("")
 338         typedef unsigned long wxFileSize_t;
 339     #endif
 340     // functions
 341     #define   wxClose      close
 342     #define   wxRead       ::read
 343     #define   wxWrite      ::write
 344     #define   wxLseek      lseek
 345     #define   wxSeek       lseek
 346     #define   wxFsync      commit
 347     #define   wxEof        eof
 348
 349     #define   wxMkDir      mkdir
 350     #define   wxRmDir      rmdir
 351
 352     #define   wxTell(fd)   lseek(fd, 0, SEEK_CUR)
 353
 354     #define   wxStructStat struct stat
 355
 356     #if wxUSE_UNICODE
 357         #define wxNEED_WX_UNISTD_H
 358         #if defined(__DMC__)
 359             typedef unsigned long mode_t;
 360         #endif
 361         WXDLLIMPEXP_BASE int wxStat( const wxChar *file_name, wxStructStat *buf );
 362         WXDLLIMPEXP_BASE int wxAccess( const wxChar *pathname, int mode );
 363         WXDLLIMPEXP_BASE int wxOpen( const wxChar *pathname, int flags, mode_t mode );
 364     #else
 365         #define   wxOpen       open
 366         #define   wxStat       stat
 367         #define   wxAccess     access
 368     #endif
 369 #endif // platforms
 370
 371 #if defined(__VISAGECPP__) && __IBMCPP__ >= 400
 372 //
 373 // VisualAge C++ V4.0 cannot have any external linkage const decs
 374 // in headers included by more than one primary source
 375 //
 376 extern const wxFileSize_t wxInvalidOffset;
 377 #else
 378 const wxFileSize_t wxInvalidOffset = (wxFileSize_t)-1;
 379 #endif
 380
 381 // ----------------------------------------------------------------------------
 382 // functions
 383 // ----------------------------------------------------------------------------
 384 WXDLLIMPEXP_BASE bool wxFileExists(const wxString& filename);
 385
 386 // does the path exist? (may have or not '/' or '\\' at the end)
 387 WXDLLIMPEXP_BASE bool wxPathExists(const wxChar *pszPathName);
 388
 389 WXDLLIMPEXP_BASE bool wxIsAbsolutePath(const wxString& filename);
 390
 391 // Get filename
 392 WXDLLIMPEXP_BASE wxChar* wxFileNameFromPath(wxChar *path);
 393 WXDLLIMPEXP_BASE wxString wxFileNameFromPath(const wxString& path);
 394
 395 // Get directory
 396 WXDLLIMPEXP_BASE wxString wxPathOnly(const wxString& path);
 397
 398 // wxString version
 399 WXDLLIMPEXP_BASE wxString wxRealPath(const wxString& path);
 400
 401 WXDLLIMPEXP_BASE void wxDos2UnixFilename(wxChar *s);
 402
 403 WXDLLIMPEXP_BASE void wxUnix2DosFilename(wxChar *s);
 404
 405 // Strip the extension, in situ
 406 WXDLLIMPEXP_BASE void wxStripExtension(wxChar *buffer);
 407 WXDLLIMPEXP_BASE void wxStripExtension(wxString& buffer);
 408
 409 // Get a temporary filename
 410 WXDLLIMPEXP_BASE wxChar* wxGetTempFileName(const wxString& prefix, wxChar *buf = (wxChar *) NULL);
 411 WXDLLIMPEXP_BASE bool wxGetTempFileName(const wxString& prefix, wxString& buf);
 412
 413 // Expand file name (~/ and ${OPENWINHOME}/ stuff)
 414 WXDLLIMPEXP_BASE wxChar* wxExpandPath(wxChar *dest, const wxChar *path);
 415 WXDLLIMPEXP_BASE bool wxExpandPath(wxString& dest, const wxChar *path);
 416
 417 // Contract w.r.t environment (</usr/openwin/lib, OPENWHOME> -> ${OPENWINHOME}/lib)
 418 // and make (if under the home tree) relative to home
 419 // [caller must copy-- volatile]
 420 WXDLLIMPEXP_BASE wxChar* wxContractPath(const wxString& filename,
 421                                    const wxString& envname = wxEmptyString,
 422                                    const wxString& user = wxEmptyString);
 423
 424 // Destructive removal of /./ and /../ stuff
 425 WXDLLIMPEXP_BASE wxChar* wxRealPath(wxChar *path);
 426
 427 // Allocate a copy of the full absolute path
 428 WXDLLIMPEXP_BASE wxChar* wxCopyAbsolutePath(const wxString& path);
 429
 430 // Get first file name matching given wild card.
 431 // Flags are reserved for future use.
 432 #define wxFILE  1
 433 #define wxDIR   2
 434 WXDLLIMPEXP_BASE wxString wxFindFirstFile(const wxChar *spec, int flags = wxFILE);
 435 WXDLLIMPEXP_BASE wxString wxFindNextFile();
 436
 437 // Does the pattern contain wildcards?
 438 WXDLLIMPEXP_BASE bool wxIsWild(const wxString& pattern);
 439
 440 // Does the pattern match the text (usually a filename)?
 441 // If dot_special is true, doesn't match * against . (eliminating
 442 // `hidden' dot files)
 443 WXDLLIMPEXP_BASE bool wxMatchWild(const wxString& pattern,  const wxString& text, bool dot_special = true);
 444
 445 // Concatenate two files to form third
 446 WXDLLIMPEXP_BASE bool wxConcatFiles(const wxString& file1, const wxString& file2, const wxString& file3);
 447
 448 // Copy file1 to file2
 449 WXDLLIMPEXP_BASE bool wxCopyFile(const wxString& file1, const wxString& file2,
 450                                  bool overwrite = true);
 451
 452 // Remove file
 453 WXDLLIMPEXP_BASE bool wxRemoveFile(const wxString& file);
 454
 455 // Rename file
 456 WXDLLIMPEXP_BASE bool wxRenameFile(const wxString& file1, const wxString& file2);
 457
 458 // Get current working directory.
 459 // If buf is NULL, allocates space using new, else
 460 // copies into buf.
 461 // IMPORTANT NOTE getcwd is know not to work under some releases
 462 // of Win32s 1.3, according to MS release notes!
 463 WXDLLIMPEXP_BASE wxChar* wxGetWorkingDirectory(wxChar *buf = (wxChar *) NULL, int sz = 1000);
 464 // new and preferred version of wxGetWorkingDirectory
 465 // NB: can't have the same name because of overloading ambiguity
 466 WXDLLIMPEXP_BASE wxString wxGetCwd();
 467
 468 // Set working directory
 469 WXDLLIMPEXP_BASE bool wxSetWorkingDirectory(const wxString& d);
 470
 471 // Make directory
 472 WXDLLIMPEXP_BASE bool wxMkdir(const wxString& dir, int perm = 0777);
 473
 474 // Remove directory. Flags reserved for future use.
 475 WXDLLIMPEXP_BASE bool wxRmdir(const wxString& dir, int flags = 0);
 476
 477 // compatibility defines, don't use in new code
 478 #define wxDirExists wxPathExists
 479
 480 // ----------------------------------------------------------------------------
 481 // separators in file names
 482 // ----------------------------------------------------------------------------
 483
 484 // between file name and extension
 485 #define wxFILE_SEP_EXT        wxT('.')
 486
 487 // between drive/volume name and the path
 488 #define wxFILE_SEP_DSK        wxT(':')
 489
 490 // between the path components
 491 #define wxFILE_SEP_PATH_DOS   wxT('\\')
 492 #define wxFILE_SEP_PATH_UNIX  wxT('/')
 493 #define wxFILE_SEP_PATH_MAC   wxT(':')
 494 #define wxFILE_SEP_PATH_VMS   wxT('.') // VMS also uses '[' and ']'
 495
 496 // separator in the path list (as in PATH environment variable)
 497 // there is no PATH variable in Classic Mac OS so just use the
 498 // semicolon (it must be different from the file name separator)
 499 // NB: these are strings and not characters on purpose!
 500 #define wxPATH_SEP_DOS        wxT(";")
 501 #define wxPATH_SEP_UNIX       wxT(":")
 502 #define wxPATH_SEP_MAC        wxT(";")
 503
 504 // platform independent versions
 505 #if defined(__UNIX__) && !defined(__OS2__)
 506   // CYGWIN also uses UNIX settings
 507   #define wxFILE_SEP_PATH     wxFILE_SEP_PATH_UNIX
 508   #define wxPATH_SEP          wxPATH_SEP_UNIX
 509 #elif defined(__MAC__)
 510   #define wxFILE_SEP_PATH     wxFILE_SEP_PATH_MAC
 511   #define wxPATH_SEP          wxPATH_SEP_MAC
 512 #else   // Windows and OS/2
 513   #define wxFILE_SEP_PATH     wxFILE_SEP_PATH_DOS
 514   #define wxPATH_SEP          wxPATH_SEP_DOS
 515 #endif  // Unix/Windows
 516
 517 // this is useful for wxString::IsSameAs(): to compare two file names use
 518 // filename1.IsSameAs(filename2, wxARE_FILENAMES_CASE_SENSITIVE)
 519 #if defined(__UNIX__) && !defined(__DARWIN__) && !defined(__OS2__)
 520   #define wxARE_FILENAMES_CASE_SENSITIVE  true
 521 #else   // Windows, Mac OS and OS/2
 522   #define wxARE_FILENAMES_CASE_SENSITIVE  false
 523 #endif  // Unix/Windows
 524
 525 // is the char a path separator?
 526 inline bool wxIsPathSeparator(wxChar c)
 527 {
 528     // under DOS/Windows we should understand both Unix and DOS file separators
 529 #if ( defined(__UNIX__) && !defined(__OS2__) )|| defined(__MAC__)
 530     return c == wxFILE_SEP_PATH;
 531 #else
 532     return c == wxFILE_SEP_PATH_DOS || c == wxFILE_SEP_PATH_UNIX;
 533 #endif
 534 }
 535
 536 // does the string ends with path separator?
 537 WXDLLIMPEXP_BASE bool wxEndsWithPathSeparator(const wxChar *pszFileName);
 538
 539 // split the full path into path (including drive for DOS), name and extension
 540 // (understands both '/' and '\\')
 541 WXDLLIMPEXP_BASE void wxSplitPath(const wxChar *pszFileName,
 542                              wxString *pstrPath,
 543                              wxString *pstrName,
 544                              wxString *pstrExt);
 545
 546 // find a file in a list of directories, returns false if not found
 547 WXDLLIMPEXP_BASE bool wxFindFileInPath(wxString *pStr, const wxChar *pszPath, const wxChar *pszFile);
 548
 549 // Get the OS directory if appropriate (such as the Windows directory).
 550 // On non-Windows platform, probably just return the empty string.
 551 WXDLLIMPEXP_BASE wxString wxGetOSDirectory();
 552
 553 // Get file modification time
 554 WXDLLIMPEXP_BASE time_t wxFileModificationTime(const wxString& filename);
 555
 556 // Parses the wildCard, returning the number of filters.
 557 // Returns 0 if none or if there's a problem,
 558 // The arrays will contain an equal number of items found before the error.
 559 // wildCard is in the form:
 560 // "All files (*)|*|Image Files (*.jpeg *.png)|*.jpg;*.png"
 561 WXDLLIMPEXP_BASE int wxParseCommonDialogsFilter(const wxString& wildCard, wxArrayString& descriptions, wxArrayString& filters);
 562
 563 // ----------------------------------------------------------------------------
 564 // classes
 565 // ----------------------------------------------------------------------------
 566
 567 #ifdef __UNIX__
 568
 569 // set umask to the given value in ctor and reset it to the old one in dtor
 570 class WXDLLIMPEXP_BASE wxUmaskChanger
 571 {
 572 public:
 573     // change the umask to the given one if it is not -1: this allows to write
 574     // the same code whether you really want to change umask or not, as is in
 575     // wxFileConfig::Flush() for example
 576     wxUmaskChanger(int umaskNew)
 577     {
 578         m_umaskOld = umaskNew == -1 ? -1 : (int)umask((mode_t)umaskNew);
 579     }
 580
 581     ~wxUmaskChanger()
 582     {
 583         if ( m_umaskOld != -1 )
 584             umask((mode_t)m_umaskOld);
 585     }
 586
 587 private:
 588     int m_umaskOld;
 589 };
 590
 591 // this macro expands to an "anonymous" wxUmaskChanger object under Unix and
 592 // nothing elsewhere
 593 #define wxCHANGE_UMASK(m) wxUmaskChanger wxMAKE_UNIQUE_NAME(umaskChanger_)(m)
 594
 595 #else // !__UNIX__
 596
 597 #define wxCHANGE_UMASK(m)
 598
 599 #endif // __UNIX__/!__UNIX__
 600
 601
 602 // Path searching
 603 class WXDLLIMPEXP_BASE wxPathList : public wxStringList
 604 {
 605 public:
 606     // avoid GCC warning about virtual functions w/o virtual dtor
 607     virtual ~wxPathList() {}
 608
 609     // Adds all paths in environment variable
 610     void AddEnvList(const wxString& envVariable);
 611
 612     void Add(const wxString& path);
 613     // Find the first full path for which the file exists
 614     wxString FindValidPath(const wxString& filename);
 615     // Find the first full path for which the file exists; ensure it's an
 616     // absolute path that gets returned.
 617     wxString FindAbsoluteValidPath(const wxString& filename);
 618     // Given full path and filename, add path to list
 619     void EnsureFileAccessible(const wxString& path);
 620     // Returns true if the path is in the list
 621     bool Member(const wxString& path);
 622
 623 private:
 624     // DECLARE_DYNAMIC_CLASS(wxPathList)
 625 };
 626
 627 #endif
 628   // _WX_FILEFN_H_