include/wx/filefn.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/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 #include "wx/list.h"
  16 #include "wx/arrstr.h"
  17
  18 #ifdef __WXWINCE__
  19     #include "wx/msw/wince/time.h"
  20     #include "wx/msw/private.h"
  21 #else
  22     #include <time.h>
  23 #endif
  24
  25 #ifdef __WXWINCE__
  26 // Nothing
  27 #elif !defined(__MWERKS__)
  28     #include <sys/types.h>
  29     #include <sys/stat.h>
  30 #else
  31     #ifdef __MACH__
  32         #include <sys/types.h>
  33         #include <utime.h>
  34         #include <sys/stat.h>
  35         #include <unistd.h>
  36     #else
  37         #include <stat.h>
  38         #include <unistd.h>
  39         #include <unix.h>
  40     #endif
  41 #endif
  42
  43 #ifdef __OS2__
  44 // need to check for __OS2__ first since currently both
  45 // __OS2__ and __UNIX__ are defined.
  46     #include <process.h>
  47     #include "wx/os2/private.h"
  48     #ifdef __WATCOMC__
  49         #include <direct.h>
  50     #endif
  51     #include <io.h>
  52     #ifdef __EMX__
  53         #include <unistd.h>
  54     #endif
  55 #elif defined(__UNIX__)
  56     #include <unistd.h>
  57     #include <dirent.h>
  58 #endif
  59
  60 #if defined(__WINDOWS__) && !defined(__WXMICROWIN__)
  61 #if !defined( __GNUWIN32__ ) && !defined( __MWERKS__ ) && !defined(__SALFORDC__) && !defined(__WXWINCE__) && !defined(__CYGWIN__)
  62     #include <direct.h>
  63     #include <dos.h>
  64     #include <io.h>
  65 #endif // __WINDOWS__
  66 #endif // native Win compiler
  67
  68 #if defined(__DOS__)
  69     #ifdef __WATCOMC__
  70         #include <direct.h>
  71         #include <dos.h>
  72         #include <io.h>
  73     #endif
  74     #ifdef __DJGPP__
  75         #include <io.h>
  76         #include <unistd.h>
  77     #endif
  78 #endif
  79
  80 #ifdef __BORLANDC__ // Please someone tell me which version of Borland needs
  81                     // this (3.1 I believe) and how to test for it.
  82                     // If this works for Borland 4.0 as well, then no worries.
  83     #include <dir.h>
  84 #endif
  85
  86 #ifdef __SALFORDC__
  87     #include <dir.h>
  88     #include <unix.h>
  89 #endif
  90
  91 #ifndef __WXWINCE__
  92     #include  <fcntl.h>       // O_RDONLY &c
  93 #endif
  94 // ----------------------------------------------------------------------------
  95 // constants
  96 // ----------------------------------------------------------------------------
  97
  98 #ifdef __WXWINCE__
  99     typedef long off_t;
 100 #else
 101     // define off_t
 102     #if !defined(__WXMAC__) || defined(__UNIX__) || defined(__MACH__)
 103         #include  <sys/types.h>
 104     #else
 105         typedef long off_t;
 106     #endif
 107 #endif
 108
 109 #if (defined(__VISUALC__) && !defined(__WXWINCE__)) || ( defined(__MWERKS__) && defined( __INTEL__) )
 110     typedef _off_t off_t;
 111 #elif defined(__SYMANTEC__)
 112     typedef long off_t;
 113 #elif defined(__MWERKS__) && !defined(__INTEL__) && !defined(__MACH__)
 114     typedef long off_t;
 115 #endif
 116
 117 enum wxSeekMode
 118 {
 119   wxFromStart,
 120   wxFromCurrent,
 121   wxFromEnd
 122 };
 123
 124 enum wxFileKind
 125 {
 126   wxFILE_KIND_UNKNOWN,
 127   wxFILE_KIND_DISK,     // a file supporting seeking to arbitrary offsets
 128   wxFILE_KIND_TERMINAL, // a tty
 129   wxFILE_KIND_PIPE      // a pipe
 130 };
 131
 132 // ----------------------------------------------------------------------------
 133 // declare our versions of low level file functions: some compilers prepend
 134 // underscores to the usual names, some also have Unicode versions of them
 135 // ----------------------------------------------------------------------------
 136
 137 // Wrappers around Win32 api functions like CreateFile, ReadFile and such
 138 // Implemented in filefnwce.cpp
 139 #if defined( __WXWINCE__)
 140     typedef __int64 wxFileOffset;
 141     #define wxFileOffsetFmtSpec _("I64")
 142     int wxOpen(const wxChar *filename, int oflag, int WXUNUSED(pmode));
 143     int wxAccess(const wxChar *name, int WXUNUSED(how));
 144     int wxClose(int fd);
 145     int wxFsync(int WXUNUSED(fd));
 146     int wxRead(int fd, void *buf, unsigned int count);
 147     int wxWrite(int fd, const void *buf, unsigned int count);
 148     int wxEof(int fd);
 149     wxFileOffset wxSeek(int fd, wxFileOffset offset, int origin);
 150     #define wxLSeek wxSeek
 151     wxFileOffset wxTell(int fd);
 152
 153     // always Unicode under WinCE
 154     #define   wxMkDir      _wmkdir
 155     #define   wxRmDir      _wrmdir
 156     #define   wxStat       _wstat
 157     #define   wxStructStat struct _stat
 158 #elif defined(__WXMSW__) && !defined(__WXPALMOS__) && \
 159       ( \
 160         defined(__VISUALC__) || \
 161         (defined(__MINGW32__) && !defined(__WINE__) && \
 162                                 wxCHECK_W32API_VERSION(0, 5)) || \
 163         defined(__MWERKS__) || \
 164         defined(__DMC__) || \
 165         defined(__WATCOMC__) || \
 166         defined(__BORLANDC__) \
 167       )
 168
 169     #undef wxHAS_HUGE_FILES
 170
 171     // detect compilers which have support for huge files
 172     #if defined(__VISUALC__)
 173         #define wxHAS_HUGE_FILES 1
 174     #elif defined(__MINGW32__)
 175         #define wxHAS_HUGE_FILES 1
 176     #elif defined(_LARGE_FILES)
 177         #define wxHAS_HUGE_FILES 1
 178     #endif
 179
 180     // other Windows compilers (DMC, Watcom, Metrowerks and Borland) don't have
 181     // huge file support (or at least not all functions needed for it by wx)
 182     // currently
 183
 184     #ifdef wxHAS_HUGE_FILES
 185         typedef wxLongLong_t wxFileOffset;
 186         #define wxFileOffsetFmtSpec wxLongLongFmtSpec
 187     #else
 188         typedef off_t wxFileOffset;
 189     #endif
 190
 191
 192     // functions
 193
 194     // MSVC and compatible compilers prepend underscores to the POSIX function
 195     // names, other compilers don't and even if their later versions usually do
 196     // define the versions with underscores for MSVC compatibility, it's better
 197     // to avoid using them as they're not present in earlier versions and
 198     // always using the native functions spelling is easier than testing for
 199     // the versions
 200     #if defined(__BORLANDC__) || defined(__DMC__) || defined(__WATCOMC__)
 201         #define wxPOSIX_IDENT(func)    ::func
 202     #else // by default assume MSVC-compatible names
 203         #define wxPOSIX_IDENT(func)    _ ## func
 204         #define wxHAS_UNDERSCORES_IN_POSIX_IDENTS
 205     #endif
 206
 207     // at least Borland 5.5 doesn't like "struct ::stat" so don't use the scope
 208     // resolution operator present in wxPOSIX_IDENT for it
 209     #ifdef __BORLANDC__
 210         #define wxPOSIX_STRUCT(s)    struct s
 211     #else
 212         #define wxPOSIX_STRUCT(s)    struct wxPOSIX_IDENT(s)
 213     #endif
 214
 215     // first functions not working with strings, i.e. without ANSI/Unicode
 216     // complications
 217     #define   wxClose      wxPOSIX_IDENT(close)
 218
 219     #if defined(__MWERKS__)
 220         #if __MSL__ >= 0x6000
 221             #define wxRead(fd, buf, nCount)  _read(fd, (void *)buf, nCount)
 222             #define wxWrite(fd, buf, nCount) _write(fd, (void *)buf, nCount)
 223         #else
 224             #define wxRead(fd, buf, nCount)\
 225                   _read(fd, (const char *)buf, nCount)
 226             #define wxWrite(fd, buf, nCount)\
 227                   _write(fd, (const char *)buf, nCount)
 228         #endif
 229     #else // __MWERKS__
 230         #define wxRead         wxPOSIX_IDENT(read)
 231         #define wxWrite        wxPOSIX_IDENT(write)
 232     #endif
 233
 234     #ifdef wxHAS_HUGE_FILES
 235         #define   wxSeek       wxPOSIX_IDENT(lseeki64)
 236         #define   wxLseek      wxPOSIX_IDENT(lseeki64)
 237         #define   wxTell       wxPOSIX_IDENT(telli64)
 238     #else // !wxHAS_HUGE_FILES
 239         #define   wxSeek       wxPOSIX_IDENT(lseek)
 240         #define   wxLseek      wxPOSIX_IDENT(lseek)
 241         #define   wxTell       wxPOSIX_IDENT(tell)
 242     #endif // wxHAS_HUGE_FILES/!wxHAS_HUGE_FILES
 243
 244     #ifndef __WATCOMC__
 245         #if !defined(__BORLANDC__) || (__BORLANDC__ > 0x540)
 246            // NB: this one is not POSIX and always has the underscore
 247            #define   wxFsync      _commit
 248
 249            #define HAVE_FSYNC
 250        #endif // BORLANDC
 251     #endif
 252
 253     #define   wxEof        wxPOSIX_IDENT(eof)
 254
 255     // then the functions taking strings
 256     #if wxUSE_UNICODE
 257         #if wxUSE_UNICODE_MSLU
 258             // implement the missing file functions in Win9x ourselves
 259             #if defined( __VISUALC__ ) \
 260                 || ( defined(__MINGW32__) && wxCHECK_W32API_VERSION( 0, 5 ) ) \
 261                 || ( defined(__MWERKS__) && defined(__WXMSW__) ) \
 262                 || ( defined(__BORLANDC__) && (__BORLANDC__ > 0x460) ) \
 263                 || defined(__DMC__)
 264
 265                 WXDLLIMPEXP_BASE int wxMSLU__wopen(const wxChar *name,
 266                                                    int flags, int mode);
 267                 WXDLLIMPEXP_BASE int wxMSLU__waccess(const wxChar *name,
 268                                                      int mode);
 269                 WXDLLIMPEXP_BASE int wxMSLU__wmkdir(const wxChar *name);
 270                 WXDLLIMPEXP_BASE int wxMSLU__wrmdir(const wxChar *name);
 271
 272                 WXDLLIMPEXP_BASE int
 273                 wxMSLU__wstat(const wxChar *name, wxPOSIX_STRUCT(stat) *buffer);
 274                 WXDLLIMPEXP_BASE int
 275                 wxMSLU__wstati64(const wxChar *name,
 276                                  wxPOSIX_STRUCT(stati64) *buffer);
 277             #endif // Windows compilers with MSLU support
 278
 279             #define   wxOpen       wxMSLU__wopen
 280
 281             #define   wxAccess     wxMSLU__waccess
 282             #define   wxMkDir      wxMSLU__wmkdir
 283             #define   wxRmDir      wxMSLU__wrmdir
 284             #ifdef wxHAS_HUGE_FILES
 285                 #define   wxStat       wxMSLU__wstati64
 286             #else
 287                 #define   wxStat       wxMSLU__wstat
 288             #endif
 289         #else // !wxUSE_UNICODE_MSLU
 290             #ifdef __BORLANDC__
 291                 #if __BORLANDC__ >= 0x550 && __BORLANDC__ <= 0x551
 292                     WXDLLIMPEXP_BASE int wxOpen(const wxChar *pathname,
 293                                                 int flags, mode_t mode);
 294                 #else
 295                     #define   wxOpen       _wopen
 296                 #endif
 297                 #define   wxAccess     _waccess
 298                 #define   wxMkDir      _wmkdir
 299                 #define   wxRmDir      _wrmdir
 300                 #ifdef wxHAS_HUGE_FILES
 301                     #define   wxStat       _wstati64
 302                 #else
 303                     #define   wxStat       _wstat
 304                 #endif
 305             #else
 306                 #define   wxOpen       _wopen
 307                 #define   wxAccess     _waccess
 308                 #define   wxMkDir      _wmkdir
 309                 #define   wxRmDir      _wrmdir
 310                 #ifdef wxHAS_HUGE_FILES
 311                     #define   wxStat       _wstati64
 312                 #else
 313                     #define   wxStat       _wstat
 314                 #endif
 315             #endif
 316         #endif // wxUSE_UNICODE_MSLU/!wxUSE_UNICODE_MSLU
 317     #else // !wxUSE_UNICODE
 318         #define   wxOpen       wxPOSIX_IDENT(open)
 319         #define   wxAccess     wxPOSIX_IDENT(access)
 320         #define   wxMkDir      wxPOSIX_IDENT(mkdir)
 321         #define   wxRmDir      wxPOSIX_IDENT(rmdir)
 322         #ifdef wxHAS_HUGE_FILES
 323             #define   wxStat       wxPOSIX_IDENT(stati64)
 324         #else
 325             #define   wxStat       wxPOSIX_IDENT(stat)
 326         #endif
 327     #endif // wxUSE_UNICODE/!wxUSE_UNICODE
 328
 329     // Types: Notice that Watcom is the only compiler to have a wide char
 330     // version of struct stat as well as a wide char stat function variant.
 331     // This was droped since OW 1.4 "for consistency across platforms".
 332     #ifdef wxHAS_HUGE_FILES
 333         #if wxUSE_UNICODE && wxONLY_WATCOM_EARLIER_THAN(1,4)
 334             #define   wxStructStat struct _wstati64
 335         #else
 336             #define   wxStructStat struct _stati64
 337         #endif
 338     #else
 339         #if wxUSE_UNICODE && wxONLY_WATCOM_EARLIER_THAN(1,4)
 340             #define   wxStructStat struct _wstat
 341         #else
 342             #define   wxStructStat struct _stat
 343         #endif
 344     #endif
 345
 346     // constants (unless already defined by the user code)
 347     #ifdef wxHAS_UNDERSCORES_IN_POSIX_IDENTS
 348         #ifndef O_RDONLY
 349             #define   O_RDONLY    _O_RDONLY
 350             #define   O_WRONLY    _O_WRONLY
 351             #define   O_RDWR      _O_RDWR
 352             #define   O_EXCL      _O_EXCL
 353             #define   O_CREAT     _O_CREAT
 354             #define   O_BINARY    _O_BINARY
 355         #endif
 356
 357         #ifndef S_IFMT
 358             #define   S_IFMT      _S_IFMT
 359             #define   S_IFDIR     _S_IFDIR
 360             #define   S_IFREG     _S_IFREG
 361         #endif
 362     #endif // wxHAS_UNDERSCORES_IN_POSIX_IDENTS
 363
 364     #ifdef wxHAS_HUGE_FILES
 365         // wxFile is present and supports large files. Currently wxFFile
 366         // doesn't have large file support with any Windows compiler (even
 367         // Win64 ones).
 368         #if wxUSE_FILE
 369             #define wxHAS_LARGE_FILES
 370         #endif
 371     #endif
 372
 373     // it's a private define, undefine it so that nobody gets tempted to use it
 374     #undef wxHAS_HUGE_FILES
 375 #else // Unix or Windows using unknown compiler, assume POSIX supported
 376     typedef off_t wxFileOffset;
 377     #ifdef _LARGE_FILES
 378         #define wxFileOffsetFmtSpec wxLongLongFmtSpec
 379         wxCOMPILE_TIME_ASSERT( sizeof(off_t) == sizeof(wxLongLong_t),
 380                                 BadFileSizeType );
 381         // wxFile is present and supports large files
 382         #ifdef wxUSE_FILE
 383             #define wxHAS_LARGE_FILES
 384         #endif
 385         // wxFFile is present and supports large files
 386         #if SIZEOF_LONG == 8 || defined HAVE_FSEEKO
 387             #define wxHAS_LARGE_FFILES
 388         #endif
 389     #else
 390         #define wxFileOffsetFmtSpec _T("")
 391     #endif
 392     // functions
 393     #define   wxClose      close
 394     #define   wxRead       ::read
 395     #define   wxWrite      ::write
 396     #define   wxLseek      lseek
 397     #define   wxSeek       lseek
 398     #define   wxFsync      fsync
 399     #define   wxEof        eof
 400
 401     #define   wxMkDir      mkdir
 402     #define   wxRmDir      rmdir
 403
 404     #define   wxTell(fd)   lseek(fd, 0, SEEK_CUR)
 405
 406     #define   wxStructStat struct stat
 407
 408     #if wxUSE_UNICODE
 409         #define wxNEED_WX_UNISTD_H
 410         #if defined(__DMC__)
 411             typedef unsigned long mode_t;
 412         #endif
 413         WXDLLIMPEXP_BASE int wxStat( const wxChar *file_name, wxStructStat *buf );
 414         WXDLLIMPEXP_BASE int wxLstat( const wxChar *file_name, wxStructStat *buf );
 415         WXDLLIMPEXP_BASE int wxAccess( const wxChar *pathname, int mode );
 416         WXDLLIMPEXP_BASE int wxOpen( const wxChar *pathname, int flags, mode_t mode );
 417     #else
 418         #define   wxOpen       open
 419         #define   wxStat       stat
 420         #define   wxLstat      lstat
 421         #define   wxAccess     access
 422     #endif
 423
 424     #define wxHAS_NATIVE_LSTAT
 425 #endif // platforms
 426
 427 #ifdef O_BINARY
 428     #define wxO_BINARY O_BINARY
 429 #else
 430     #define wxO_BINARY 0
 431 #endif
 432
 433 // if the platform doesn't have symlinks, define wxLstat to be the same as
 434 // wxStat to avoid #ifdefs in the code using it
 435 #ifndef wxHAS_NATIVE_LSTAT
 436     #define wxLstat wxStat
 437 #endif
 438
 439 #if defined(__VISAGECPP__) && __IBMCPP__ >= 400
 440 //
 441 // VisualAge C++ V4.0 cannot have any external linkage const decs
 442 // in headers included by more than one primary source
 443 //
 444 extern const int wxInvalidOffset;
 445 #else
 446 const int wxInvalidOffset = -1;
 447 #endif
 448
 449 // ----------------------------------------------------------------------------
 450 // functions
 451 // ----------------------------------------------------------------------------
 452 WXDLLIMPEXP_BASE bool wxFileExists(const wxString& filename);
 453
 454 // does the path exist? (may have or not '/' or '\\' at the end)
 455 WXDLLIMPEXP_BASE bool wxDirExists(const wxString& pathName);
 456
 457 WXDLLIMPEXP_BASE bool wxIsAbsolutePath(const wxString& filename);
 458
 459 // Get filename
 460 WXDLLIMPEXP_BASE wxChar* wxFileNameFromPath(wxChar *path);
 461 WXDLLIMPEXP_BASE wxString wxFileNameFromPath(const wxString& path);
 462
 463 // Get directory
 464 WXDLLIMPEXP_BASE wxString wxPathOnly(const wxString& path);
 465
 466 // wxString version
 467 WXDLLIMPEXP_BASE wxString wxRealPath(const wxString& path);
 468
 469 WXDLLIMPEXP_BASE void wxDos2UnixFilename(wxChar *s);
 470
 471 WXDLLIMPEXP_BASE void wxUnix2DosFilename(wxChar *s);
 472
 473 // Strip the extension, in situ
 474 WXDLLIMPEXP_BASE void wxStripExtension(wxChar *buffer);
 475 WXDLLIMPEXP_BASE void wxStripExtension(wxString& buffer);
 476
 477 // Get a temporary filename
 478 WXDLLIMPEXP_BASE wxChar* wxGetTempFileName(const wxString& prefix, wxChar *buf = (wxChar *) NULL);
 479 WXDLLIMPEXP_BASE bool wxGetTempFileName(const wxString& prefix, wxString& buf);
 480
 481 // Expand file name (~/ and ${OPENWINHOME}/ stuff)
 482 WXDLLIMPEXP_BASE wxChar* wxExpandPath(wxChar *dest, const wxChar *path);
 483 WXDLLIMPEXP_BASE bool wxExpandPath(wxString& dest, const wxChar *path);
 484
 485 // Contract w.r.t environment (</usr/openwin/lib, OPENWHOME> -> ${OPENWINHOME}/lib)
 486 // and make (if under the home tree) relative to home
 487 // [caller must copy-- volatile]
 488 WXDLLIMPEXP_BASE wxChar* wxContractPath(const wxString& filename,
 489                                    const wxString& envname = wxEmptyString,
 490                                    const wxString& user = wxEmptyString);
 491
 492 // Destructive removal of /./ and /../ stuff
 493 WXDLLIMPEXP_BASE wxChar* wxRealPath(wxChar *path);
 494
 495 // Allocate a copy of the full absolute path
 496 WXDLLIMPEXP_BASE wxChar* wxCopyAbsolutePath(const wxString& path);
 497
 498 // Get first file name matching given wild card.
 499 // Flags are reserved for future use.
 500 #define wxFILE  1
 501 #define wxDIR   2
 502 WXDLLIMPEXP_BASE wxString wxFindFirstFile(const wxChar *spec, int flags = wxFILE);
 503 WXDLLIMPEXP_BASE wxString wxFindNextFile();
 504
 505 // Does the pattern contain wildcards?
 506 WXDLLIMPEXP_BASE bool wxIsWild(const wxString& pattern);
 507
 508 // Does the pattern match the text (usually a filename)?
 509 // If dot_special is true, doesn't match * against . (eliminating
 510 // `hidden' dot files)
 511 WXDLLIMPEXP_BASE bool wxMatchWild(const wxString& pattern,  const wxString& text, bool dot_special = true);
 512
 513 // Concatenate two files to form third
 514 WXDLLIMPEXP_BASE bool wxConcatFiles(const wxString& file1, const wxString& file2, const wxString& file3);
 515
 516 // Copy file1 to file2
 517 WXDLLIMPEXP_BASE bool wxCopyFile(const wxString& file1, const wxString& file2,
 518                                  bool overwrite = true);
 519
 520 // Remove file
 521 WXDLLIMPEXP_BASE bool wxRemoveFile(const wxString& file);
 522
 523 // Rename file
 524 WXDLLIMPEXP_BASE bool wxRenameFile(const wxString& file1, const wxString& file2, bool overwrite = true);
 525
 526 // Get current working directory.
 527 #if WXWIN_COMPATIBILITY_2_6
 528 // If buf is NULL, allocates space using new, else
 529 // copies into buf.
 530 // IMPORTANT NOTE getcwd is know not to work under some releases
 531 // of Win32s 1.3, according to MS release notes!
 532 wxDEPRECATED( WXDLLIMPEXP_BASE wxChar* wxGetWorkingDirectory(wxChar *buf = (wxChar *) NULL, int sz = 1000) );
 533 // new and preferred version of wxGetWorkingDirectory
 534 // NB: can't have the same name because of overloading ambiguity
 535 #endif // WXWIN_COMPATIBILITY_2_6
 536 WXDLLIMPEXP_BASE wxString wxGetCwd();
 537
 538 // Set working directory
 539 WXDLLIMPEXP_BASE bool wxSetWorkingDirectory(const wxString& d);
 540
 541 // Make directory
 542 WXDLLIMPEXP_BASE bool wxMkdir(const wxString& dir, int perm = 0777);
 543
 544 // Remove directory. Flags reserved for future use.
 545 WXDLLIMPEXP_BASE bool wxRmdir(const wxString& dir, int flags = 0);
 546
 547 // Return the type of an open file
 548 WXDLLIMPEXP_BASE wxFileKind wxGetFileKind(int fd);
 549 WXDLLIMPEXP_BASE wxFileKind wxGetFileKind(FILE *fp);
 550
 551 #if WXWIN_COMPATIBILITY_2_6
 552 // compatibility defines, don't use in new code
 553 wxDEPRECATED( inline bool wxPathExists(const wxChar *pszPathName) );
 554 inline bool wxPathExists(const wxChar *pszPathName)
 555 {
 556     return wxDirExists(pszPathName);
 557 }
 558 #endif //WXWIN_COMPATIBILITY_2_6
 559
 560 // permissions; these functions work both on files and directories:
 561 WXDLLIMPEXP_BASE bool wxIsWritable(const wxString &path);
 562 WXDLLIMPEXP_BASE bool wxIsReadable(const wxString &path);
 563 WXDLLIMPEXP_BASE bool wxIsExecutable(const wxString &path);
 564
 565 // ----------------------------------------------------------------------------
 566 // separators in file names
 567 // ----------------------------------------------------------------------------
 568
 569 // between file name and extension
 570 #define wxFILE_SEP_EXT        wxT('.')
 571
 572 // between drive/volume name and the path
 573 #define wxFILE_SEP_DSK        wxT(':')
 574
 575 // between the path components
 576 #define wxFILE_SEP_PATH_DOS   wxT('\\')
 577 #define wxFILE_SEP_PATH_UNIX  wxT('/')
 578 #define wxFILE_SEP_PATH_MAC   wxT(':')
 579 #define wxFILE_SEP_PATH_VMS   wxT('.') // VMS also uses '[' and ']'
 580
 581 // separator in the path list (as in PATH environment variable)
 582 // there is no PATH variable in Classic Mac OS so just use the
 583 // semicolon (it must be different from the file name separator)
 584 // NB: these are strings and not characters on purpose!
 585 #define wxPATH_SEP_DOS        wxT(";")
 586 #define wxPATH_SEP_UNIX       wxT(":")
 587 #define wxPATH_SEP_MAC        wxT(";")
 588
 589 // platform independent versions
 590 #if defined(__UNIX__) && !defined(__OS2__)
 591   // CYGWIN also uses UNIX settings
 592   #define wxFILE_SEP_PATH     wxFILE_SEP_PATH_UNIX
 593   #define wxPATH_SEP          wxPATH_SEP_UNIX
 594 #elif defined(__MAC__)
 595   #define wxFILE_SEP_PATH     wxFILE_SEP_PATH_MAC
 596   #define wxPATH_SEP          wxPATH_SEP_MAC
 597 #else   // Windows and OS/2
 598   #define wxFILE_SEP_PATH     wxFILE_SEP_PATH_DOS
 599   #define wxPATH_SEP          wxPATH_SEP_DOS
 600 #endif  // Unix/Windows
 601
 602 // this is useful for wxString::IsSameAs(): to compare two file names use
 603 // filename1.IsSameAs(filename2, wxARE_FILENAMES_CASE_SENSITIVE)
 604 #if defined(__UNIX__) && !defined(__DARWIN__) && !defined(__OS2__)
 605   #define wxARE_FILENAMES_CASE_SENSITIVE  true
 606 #else   // Windows, Mac OS and OS/2
 607   #define wxARE_FILENAMES_CASE_SENSITIVE  false
 608 #endif  // Unix/Windows
 609
 610 // is the char a path separator?
 611 inline bool wxIsPathSeparator(wxChar c)
 612 {
 613     // under DOS/Windows we should understand both Unix and DOS file separators
 614 #if ( defined(__UNIX__) && !defined(__OS2__) )|| defined(__MAC__)
 615     return c == wxFILE_SEP_PATH;
 616 #else
 617     return c == wxFILE_SEP_PATH_DOS || c == wxFILE_SEP_PATH_UNIX;
 618 #endif
 619 }
 620
 621 // does the string ends with path separator?
 622 WXDLLIMPEXP_BASE bool wxEndsWithPathSeparator(const wxChar *pszFileName);
 623
 624 // split the full path into path (including drive for DOS), name and extension
 625 // (understands both '/' and '\\')
 626 WXDLLIMPEXP_BASE void wxSplitPath(const wxChar *pszFileName,
 627                              wxString *pstrPath,
 628                              wxString *pstrName,
 629                              wxString *pstrExt);
 630
 631 // find a file in a list of directories, returns false if not found
 632 WXDLLIMPEXP_BASE bool wxFindFileInPath(wxString *pStr, const wxChar *pszPath, const wxChar *pszFile);
 633
 634 // Get the OS directory if appropriate (such as the Windows directory).
 635 // On non-Windows platform, probably just return the empty string.
 636 WXDLLIMPEXP_BASE wxString wxGetOSDirectory();
 637
 638 #if wxUSE_DATETIME
 639
 640 // Get file modification time
 641 WXDLLIMPEXP_BASE time_t wxFileModificationTime(const wxString& filename);
 642
 643 #endif // wxUSE_DATETIME
 644
 645 // Parses the wildCard, returning the number of filters.
 646 // Returns 0 if none or if there's a problem,
 647 // The arrays will contain an equal number of items found before the error.
 648 // wildCard is in the form:
 649 // "All files (*)|*|Image Files (*.jpeg *.png)|*.jpg;*.png"
 650 WXDLLIMPEXP_BASE int wxParseCommonDialogsFilter(const wxString& wildCard, wxArrayString& descriptions, wxArrayString& filters);
 651
 652 // ----------------------------------------------------------------------------
 653 // classes
 654 // ----------------------------------------------------------------------------
 655
 656 #ifdef __UNIX__
 657
 658 // set umask to the given value in ctor and reset it to the old one in dtor
 659 class WXDLLIMPEXP_BASE wxUmaskChanger
 660 {
 661 public:
 662     // change the umask to the given one if it is not -1: this allows to write
 663     // the same code whether you really want to change umask or not, as is in
 664     // wxFileConfig::Flush() for example
 665     wxUmaskChanger(int umaskNew)
 666     {
 667         m_umaskOld = umaskNew == -1 ? -1 : (int)umask((mode_t)umaskNew);
 668     }
 669
 670     ~wxUmaskChanger()
 671     {
 672         if ( m_umaskOld != -1 )
 673             umask((mode_t)m_umaskOld);
 674     }
 675
 676 private:
 677     int m_umaskOld;
 678 };
 679
 680 // this macro expands to an "anonymous" wxUmaskChanger object under Unix and
 681 // nothing elsewhere
 682 #define wxCHANGE_UMASK(m) wxUmaskChanger wxMAKE_UNIQUE_NAME(umaskChanger_)(m)
 683
 684 #else // !__UNIX__
 685
 686 #define wxCHANGE_UMASK(m)
 687
 688 #endif // __UNIX__/!__UNIX__
 689
 690
 691 // Path searching
 692 class WXDLLIMPEXP_BASE wxPathList : public wxArrayString
 693 {
 694 public:
 695     wxPathList() {}
 696     wxPathList(const wxArrayString &arr)
 697         { Add(arr); }
 698
 699     // Adds all paths in environment variable
 700     void AddEnvList(const wxString& envVariable);
 701
 702     // Adds given path to this list
 703     bool Add(const wxString& path);
 704     void Add(const wxArrayString &paths);
 705
 706     // Find the first full path for which the file exists
 707     wxString FindValidPath(const wxString& filename) const;
 708
 709     // Find the first full path for which the file exists; ensure it's an
 710     // absolute path that gets returned.
 711     wxString FindAbsoluteValidPath(const wxString& filename) const;
 712
 713     // Given full path and filename, add path to list
 714     bool EnsureFileAccessible(const wxString& path);
 715
 716 #if WXWIN_COMPATIBILITY_2_6
 717     // Returns true if the path is in the list
 718     wxDEPRECATED( bool Member(const wxString& path) const );
 719 #endif
 720 };
 721
 722 #endif // _WX_FILEFN_H_