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