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(__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 #ifndef __WXWINCE__
  87     #include  <fcntl.h>       // O_RDONLY &c
  88 #endif
  89
  90 // ----------------------------------------------------------------------------
  91 // constants
  92 // ----------------------------------------------------------------------------
  93
  94 #if defined(__VISUALC__) || defined(__DIGITALMARS__)
  95     typedef int mode_t;
  96 #endif
  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 // we redefine these constants here because S_IREAD &c are _not_ standard
 133 // however, we do assume that the values correspond to the Unix umask bits
 134 enum wxPosixPermissions
 135 {
 136     // standard Posix names for these permission flags:
 137     wxS_IRUSR = 00400,
 138     wxS_IWUSR = 00200,
 139     wxS_IXUSR = 00100,
 140
 141     wxS_IRGRP = 00040,
 142     wxS_IWGRP = 00020,
 143     wxS_IXGRP = 00010,
 144
 145     wxS_IROTH = 00004,
 146     wxS_IWOTH = 00002,
 147     wxS_IXOTH = 00001,
 148
 149     // longer but more readable synonyms for the constants above:
 150     wxPOSIX_USER_READ = wxS_IRUSR,
 151     wxPOSIX_USER_WRITE = wxS_IWUSR,
 152     wxPOSIX_USER_EXECUTE = wxS_IXUSR,
 153
 154     wxPOSIX_GROUP_READ = wxS_IRGRP,
 155     wxPOSIX_GROUP_WRITE = wxS_IWGRP,
 156     wxPOSIX_GROUP_EXECUTE = wxS_IXGRP,
 157
 158     wxPOSIX_OTHERS_READ = wxS_IROTH,
 159     wxPOSIX_OTHERS_WRITE = wxS_IWOTH,
 160     wxPOSIX_OTHERS_EXECUTE = wxS_IXOTH,
 161
 162     // default mode for the new files: allow reading/writing them to everybody but
 163     // the effective file mode will be set after anding this value with umask and
 164     // so won't include wxS_IW{GRP,OTH} for the default 022 umask value
 165     wxS_DEFAULT = (wxPOSIX_USER_READ | wxPOSIX_USER_WRITE | \
 166                    wxPOSIX_GROUP_READ | wxPOSIX_GROUP_WRITE | \
 167                    wxPOSIX_OTHERS_READ | wxPOSIX_OTHERS_WRITE),
 168
 169     // default mode for the new directories (see wxFileName::Mkdir): allow
 170     // reading/writing/executing them to everybody, but just like wxS_DEFAULT
 171     // the effective directory mode will be set after anding this value with umask
 172     wxS_DIR_DEFAULT = (wxPOSIX_USER_READ | wxPOSIX_USER_WRITE | wxPOSIX_USER_EXECUTE | \
 173                        wxPOSIX_GROUP_READ | wxPOSIX_GROUP_WRITE | wxPOSIX_GROUP_EXECUTE | \
 174                        wxPOSIX_OTHERS_READ | wxPOSIX_OTHERS_WRITE | wxPOSIX_OTHERS_EXECUTE)
 175 };
 176
 177 // ----------------------------------------------------------------------------
 178 // declare our versions of low level file functions: some compilers prepend
 179 // underscores to the usual names, some also have Unicode versions of them
 180 // ----------------------------------------------------------------------------
 181
 182 // Wrappers around Win32 api functions like CreateFile, ReadFile and such
 183 // Implemented in filefnwce.cpp
 184 #if defined( __WXWINCE__)
 185     typedef __int64 wxFileOffset;
 186     #define wxFileOffsetFmtSpec wxT("I64")
 187     WXDLLIMPEXP_BASE int wxCRT_Open(const wxChar *filename, int oflag, int WXUNUSED(pmode));
 188     WXDLLIMPEXP_BASE int wxCRT_Access(const wxChar *name, int WXUNUSED(how));
 189     WXDLLIMPEXP_BASE int wxClose(int fd);
 190     WXDLLIMPEXP_BASE int wxFsync(int WXUNUSED(fd));
 191     WXDLLIMPEXP_BASE int wxRead(int fd, void *buf, unsigned int count);
 192     WXDLLIMPEXP_BASE int wxWrite(int fd, const void *buf, unsigned int count);
 193     WXDLLIMPEXP_BASE int wxEof(int fd);
 194     WXDLLIMPEXP_BASE wxFileOffset wxSeek(int fd, wxFileOffset offset, int origin);
 195     #define wxLSeek wxSeek
 196     WXDLLIMPEXP_BASE wxFileOffset wxTell(int fd);
 197
 198     // always Unicode under WinCE
 199     #define   wxCRT_MkDir      _wmkdir
 200     #define   wxCRT_RmDir      _wrmdir
 201     #define   wxCRT_Stat       _wstat
 202     #define   wxStructStat struct _stat
 203 #elif (defined(__WINDOWS__) || defined(__OS2__)) && \
 204       ( \
 205         defined(__VISUALC__) || \
 206         defined(__MINGW64__) || \
 207         (defined(__MINGW32__) && !defined(__WINE__) && \
 208                                 wxCHECK_W32API_VERSION(0, 5)) || \
 209         defined(__MWERKS__) || \
 210         defined(__DMC__) || \
 211         defined(__WATCOMC__) || \
 212         defined(__BORLANDC__) \
 213       )
 214
 215     // temporary defines just used immediately below
 216     #undef wxHAS_HUGE_FILES
 217     #undef wxHAS_HUGE_STDIO_FILES
 218
 219     // detect compilers which have support for huge files
 220     #if defined(__VISUALC__)
 221         #define wxHAS_HUGE_FILES 1
 222     #elif defined(__MINGW32__) || defined(__MINGW64__)
 223         #define wxHAS_HUGE_FILES 1
 224     #elif defined(_LARGE_FILES)
 225         #define wxHAS_HUGE_FILES 1
 226     #endif
 227
 228     // detect compilers which have support for huge stdio files
 229     #if wxCHECK_VISUALC_VERSION(8)
 230         #define wxHAS_HUGE_STDIO_FILES
 231         #define wxFseek _fseeki64
 232         #define wxFtell _ftelli64
 233     #elif wxCHECK_MINGW32_VERSION(3, 5) // mingw-runtime version (not gcc)
 234         #define wxHAS_HUGE_STDIO_FILES
 235         #define wxFseek fseeko64
 236         #define wxFtell ftello64
 237     #endif
 238
 239     // other Windows compilers (DMC, Watcom, Metrowerks and Borland) don't have
 240     // huge file support (or at least not all functions needed for it by wx)
 241     // currently
 242
 243     // types
 244
 245     #ifdef wxHAS_HUGE_FILES
 246         typedef wxLongLong_t wxFileOffset;
 247         #define wxFileOffsetFmtSpec wxLongLongFmtSpec
 248     #else
 249         typedef off_t wxFileOffset;
 250     #endif
 251
 252     // at least Borland 5.5 doesn't like "struct ::stat" so don't use the scope
 253     // resolution operator present in wxPOSIX_IDENT for it
 254     #ifdef __BORLANDC__
 255         #define wxPOSIX_STRUCT(s)    struct s
 256     #else
 257         #define wxPOSIX_STRUCT(s)    struct wxPOSIX_IDENT(s)
 258     #endif
 259
 260     // Notice that Watcom is the only compiler to have a wide char
 261     // version of struct stat as well as a wide char stat function variant.
 262     // This was dropped since OW 1.4 "for consistency across platforms".
 263     //
 264     // Borland is also special in that it uses _stat with Unicode functions
 265     // (for MSVC compatibility?) but stat with ANSI ones
 266     #ifdef __BORLANDC__
 267         #if wxHAS_HUGE_FILES
 268             #define wxStructStat struct stati64
 269         #else
 270             #if wxUSE_UNICODE
 271                 #define wxStructStat struct _stat
 272             #else
 273                 #define wxStructStat struct stat
 274             #endif
 275         #endif
 276     #else // !__BORLANDC__
 277         #ifdef wxHAS_HUGE_FILES
 278             #if wxUSE_UNICODE && wxONLY_WATCOM_EARLIER_THAN(1,4)
 279                 #define wxStructStat struct _wstati64
 280             #else
 281                 #define wxStructStat struct _stati64
 282             #endif
 283         #else
 284             #if wxUSE_UNICODE && wxONLY_WATCOM_EARLIER_THAN(1,4)
 285                 #define wxStructStat struct _wstat
 286             #else
 287                 #define wxStructStat struct _stat
 288             #endif
 289         #endif
 290     #endif // __BORLANDC__/!__BORLANDC__
 291
 292
 293     // functions
 294
 295     // MSVC and compatible compilers prepend underscores to the POSIX function
 296     // names, other compilers don't and even if their later versions usually do
 297     // define the versions with underscores for MSVC compatibility, it's better
 298     // to avoid using them as they're not present in earlier versions and
 299     // always using the native functions spelling is easier than testing for
 300     // the versions
 301     #if defined(__BORLANDC__) || defined(__DMC__) || defined(__WATCOMC__) || defined(__MINGW64__)
 302         #define wxPOSIX_IDENT(func)    ::func
 303     #else // by default assume MSVC-compatible names
 304         #define wxPOSIX_IDENT(func)    _ ## func
 305         #define wxHAS_UNDERSCORES_IN_POSIX_IDENTS
 306     #endif
 307
 308     // first functions not working with strings, i.e. without ANSI/Unicode
 309     // complications
 310     #define   wxClose      wxPOSIX_IDENT(close)
 311
 312     #if defined(__MWERKS__)
 313         #if __MSL__ >= 0x6000
 314             #define wxRead(fd, buf, nCount)  _read(fd, (void *)buf, nCount)
 315             #define wxWrite(fd, buf, nCount) _write(fd, (void *)buf, nCount)
 316         #else
 317             #define wxRead(fd, buf, nCount)\
 318                   _read(fd, (const char *)buf, nCount)
 319             #define wxWrite(fd, buf, nCount)\
 320                   _write(fd, (const char *)buf, nCount)
 321         #endif
 322     #else // __MWERKS__
 323         #define wxRead         wxPOSIX_IDENT(read)
 324         #define wxWrite        wxPOSIX_IDENT(write)
 325     #endif
 326
 327     #ifdef wxHAS_HUGE_FILES
 328         #ifndef __MINGW64__
 329             #define   wxSeek       wxPOSIX_IDENT(lseeki64)
 330             #define   wxLseek      wxPOSIX_IDENT(lseeki64)
 331             #define   wxTell       wxPOSIX_IDENT(telli64)
 332         #else
 333             // unfortunately, mingw-W64 is somewhat inconsistent...
 334             #define   wxSeek       _lseeki64
 335             #define   wxLseek      _lseeki64
 336             #define   wxTell       _telli64
 337         #endif
 338     #else // !wxHAS_HUGE_FILES
 339         #define   wxSeek       wxPOSIX_IDENT(lseek)
 340         #define   wxLseek      wxPOSIX_IDENT(lseek)
 341         #define   wxTell       wxPOSIX_IDENT(tell)
 342     #endif // wxHAS_HUGE_FILES/!wxHAS_HUGE_FILES
 343
 344     #ifndef __WATCOMC__
 345          #if !defined(__BORLANDC__) || (__BORLANDC__ > 0x540)
 346              // NB: this one is not POSIX and always has the underscore
 347              #define   wxFsync      _commit
 348
 349              // could be already defined by configure (Cygwin)
 350              #ifndef HAVE_FSYNC
 351                  #define HAVE_FSYNC
 352              #endif
 353         #endif // BORLANDC
 354     #endif
 355
 356     #define   wxEof        wxPOSIX_IDENT(eof)
 357
 358     // then the functions taking strings
 359
 360     // first the ANSI versions
 361     #define   wxCRT_OpenA       wxPOSIX_IDENT(open)
 362     #define   wxCRT_AccessA     wxPOSIX_IDENT(access)
 363     #define   wxCRT_MkDirA      wxPOSIX_IDENT(mkdir)
 364     #define   wxCRT_RmDirA      wxPOSIX_IDENT(rmdir)
 365     #ifdef wxHAS_HUGE_FILES
 366         // MinGW-64 provides underscore-less versions of all file functions
 367         // except for this one.
 368         #ifdef __MINGW64__
 369             #define   wxCRT_StatA       _stati64
 370         #else
 371             #define   wxCRT_StatA       wxPOSIX_IDENT(stati64)
 372         #endif
 373     #else
 374         // Unfortunately Watcom is not consistent
 375         #if defined(__OS2__) && defined(__WATCOMC__)
 376             #define   wxCRT_StatA       _stat
 377         #else
 378             #define   wxCRT_StatA       wxPOSIX_IDENT(stat)
 379         #endif
 380     #endif
 381
 382     // then wide char ones
 383     #if wxUSE_UNICODE
 384         // special workaround for buggy wopen() in bcc 5.5
 385         #if defined(__BORLANDC__) && \
 386             (__BORLANDC__ >= 0x550 && __BORLANDC__ <= 0x551)
 387                 WXDLLIMPEXP_BASE int wxCRT_OpenW(const wxChar *pathname,
 388                                                  int flags, mode_t mode);
 389         #else
 390             #define wxCRT_OpenW       _wopen
 391         #endif
 392
 393         #define   wxCRT_AccessW     _waccess
 394         #define   wxCRT_MkDirW      _wmkdir
 395         #define   wxCRT_RmDirW      _wrmdir
 396         #ifdef wxHAS_HUGE_FILES
 397             #define   wxCRT_StatW       _wstati64
 398         #else
 399             #define   wxCRT_StatW       _wstat
 400         #endif
 401     #endif // wxUSE_UNICODE
 402
 403
 404     // finally the default char-type versions
 405     #if wxUSE_UNICODE
 406         #if wxUSE_UNICODE_MSLU || defined(__WX_STRICT_ANSI_GCC__)
 407             // implement the missing file functions in Win9x ourselves
 408             WXDLLIMPEXP_BASE int wxMSLU__wopen(const wxChar *name,
 409                                                int flags, int mode);
 410             WXDLLIMPEXP_BASE int wxMSLU__waccess(const wxChar *name,
 411                                                  int mode);
 412             WXDLLIMPEXP_BASE int wxMSLU__wmkdir(const wxChar *name);
 413             WXDLLIMPEXP_BASE int wxMSLU__wrmdir(const wxChar *name);
 414
 415             WXDLLIMPEXP_BASE int
 416             wxMSLU__wstat(const wxChar *name, wxStructStat *buffer);
 417
 418             #define   wxCRT_Open       wxMSLU__wopen
 419
 420             #define   wxCRT_Access     wxMSLU__waccess
 421             #define   wxCRT_MkDir      wxMSLU__wmkdir
 422             #define   wxCRT_RmDir      wxMSLU__wrmdir
 423             #define   wxCRT_Stat       wxMSLU__wstat
 424         #else // !wxUSE_UNICODE_MSLU
 425             #define wxCRT_Open      wxCRT_OpenW
 426             #define wxCRT_Access    wxCRT_AccessW
 427             #define wxCRT_MkDir     wxCRT_MkDirW
 428             #define wxCRT_RmDir     wxCRT_RmDirW
 429             #define wxCRT_Stat      wxCRT_StatW
 430         #endif // wxUSE_UNICODE_MSLU/!wxUSE_UNICODE_MSLU
 431     #else // !wxUSE_UNICODE
 432         #define wxCRT_Open      wxCRT_OpenA
 433         #define wxCRT_Access    wxCRT_AccessA
 434         #define wxCRT_MkDir     wxCRT_MkDirA
 435         #define wxCRT_RmDir     wxCRT_RmDirA
 436         #define wxCRT_Stat      wxCRT_StatA
 437     #endif // wxUSE_UNICODE/!wxUSE_UNICODE
 438
 439
 440     // constants (unless already defined by the user code)
 441     #ifdef wxHAS_UNDERSCORES_IN_POSIX_IDENTS
 442         #ifndef O_RDONLY
 443             #define   O_RDONLY    _O_RDONLY
 444             #define   O_WRONLY    _O_WRONLY
 445             #define   O_RDWR      _O_RDWR
 446             #define   O_EXCL      _O_EXCL
 447             #define   O_CREAT     _O_CREAT
 448             #define   O_BINARY    _O_BINARY
 449         #endif
 450
 451         #ifndef S_IFMT
 452             #define   S_IFMT      _S_IFMT
 453             #define   S_IFDIR     _S_IFDIR
 454             #define   S_IFREG     _S_IFREG
 455         #endif
 456     #endif // wxHAS_UNDERSCORES_IN_POSIX_IDENTS
 457
 458     #ifdef wxHAS_HUGE_FILES
 459         // wxFile is present and supports large files.
 460         #if wxUSE_FILE
 461             #define wxHAS_LARGE_FILES
 462         #endif
 463         // wxFFile is present and supports large files
 464         #if wxUSE_FFILE && defined wxHAS_HUGE_STDIO_FILES
 465             #define wxHAS_LARGE_FFILES
 466         #endif
 467     #endif
 468
 469     // private defines, undefine so that nobody gets tempted to use
 470     #undef wxHAS_HUGE_FILES
 471     #undef wxHAS_HUGE_STDIO_FILES
 472 #else // Unix or Windows using unknown compiler, assume POSIX supported
 473     typedef off_t wxFileOffset;
 474     #ifdef HAVE_LARGEFILE_SUPPORT
 475         #define wxFileOffsetFmtSpec wxLongLongFmtSpec
 476         wxCOMPILE_TIME_ASSERT( sizeof(off_t) == sizeof(wxLongLong_t),
 477                                 BadFileSizeType );
 478         // wxFile is present and supports large files
 479         #if wxUSE_FILE
 480             #define wxHAS_LARGE_FILES
 481         #endif
 482         // wxFFile is present and supports large files
 483         #if wxUSE_FFILE && (SIZEOF_LONG == 8 || defined HAVE_FSEEKO)
 484             #define wxHAS_LARGE_FFILES
 485         #endif
 486         #ifdef HAVE_FSEEKO
 487             #define wxFseek fseeko
 488             #define wxFtell ftello
 489         #endif
 490     #else
 491         #define wxFileOffsetFmtSpec wxT("")
 492     #endif
 493     // functions
 494     #define   wxClose      close
 495     #define   wxRead       ::read
 496     #define   wxWrite      ::write
 497     #define   wxLseek      lseek
 498     #define   wxSeek       lseek
 499     #define   wxFsync      fsync
 500     #define   wxEof        eof
 501
 502     #define   wxCRT_MkDir      mkdir
 503     #define   wxCRT_RmDir      rmdir
 504
 505     #define   wxTell(fd)   lseek(fd, 0, SEEK_CUR)
 506
 507     #define   wxStructStat struct stat
 508
 509     #define   wxCRT_Open       open
 510     #define   wxCRT_Stat       stat
 511     #define   wxCRT_Lstat      lstat
 512     #define   wxCRT_Access     access
 513
 514     #define wxHAS_NATIVE_LSTAT
 515 #endif // platforms
 516
 517 // if the platform doesn't have symlinks, define wxCRT_Lstat to be the same as
 518 // wxCRT_Stat to avoid #ifdefs in the code using it
 519 #ifndef wxHAS_NATIVE_LSTAT
 520     #define wxCRT_Lstat wxCRT_Stat
 521 #endif
 522
 523 // define wxFseek/wxFtell to large file versions if available (done above) or
 524 // to fseek/ftell if not, to save ifdefs in using code
 525 #ifndef wxFseek
 526     #define wxFseek fseek
 527 #endif
 528 #ifndef wxFtell
 529     #define wxFtell ftell
 530 #endif
 531
 532 inline int wxAccess(const wxString& path, mode_t mode)
 533     { return wxCRT_Access(path.fn_str(), mode); }
 534 inline int wxOpen(const wxString& path, int flags, mode_t mode)
 535     { return wxCRT_Open(path.fn_str(), flags, mode); }
 536
 537 // FIXME-CE: provide our own implementations of the missing CRT functions
 538 #ifndef __WXWINCE__
 539 inline int wxStat(const wxString& path, wxStructStat *buf)
 540     { return wxCRT_Stat(path.fn_str(), buf); }
 541 inline int wxLstat(const wxString& path, wxStructStat *buf)
 542     { return wxCRT_Lstat(path.fn_str(), buf); }
 543 inline int wxRmDir(const wxString& path)
 544     { return wxCRT_RmDir(path.fn_str()); }
 545 #if (defined(__WINDOWS__) && !defined(__CYGWIN__)) \
 546         || (defined(__OS2__) && defined(__WATCOMC__))
 547 inline int wxMkDir(const wxString& path, mode_t WXUNUSED(mode) = 0)
 548     { return wxCRT_MkDir(path.fn_str()); }
 549 #else
 550 inline int wxMkDir(const wxString& path, mode_t mode)
 551     { return wxCRT_MkDir(path.fn_str(), mode); }
 552 #endif
 553 #endif // !__WXWINCE__
 554
 555 #ifdef O_BINARY
 556     #define wxO_BINARY O_BINARY
 557 #else
 558     #define wxO_BINARY 0
 559 #endif
 560
 561 #if defined(__VISAGECPP__) && __IBMCPP__ >= 400
 562 //
 563 // VisualAge C++ V4.0 cannot have any external linkage const decs
 564 // in headers included by more than one primary source
 565 //
 566 extern const int wxInvalidOffset;
 567 #else
 568 const int wxInvalidOffset = -1;
 569 #endif
 570
 571 // ----------------------------------------------------------------------------
 572 // functions
 573 // ----------------------------------------------------------------------------
 574 WXDLLIMPEXP_BASE bool wxFileExists(const wxString& filename);
 575
 576 // does the path exist? (may have or not '/' or '\\' at the end)
 577 WXDLLIMPEXP_BASE bool wxDirExists(const wxString& pathName);
 578
 579 WXDLLIMPEXP_BASE bool wxIsAbsolutePath(const wxString& filename);
 580
 581 // Get filename
 582 WXDLLIMPEXP_BASE wxChar* wxFileNameFromPath(wxChar *path);
 583 WXDLLIMPEXP_BASE wxString wxFileNameFromPath(const wxString& path);
 584
 585 // Get directory
 586 WXDLLIMPEXP_BASE wxString wxPathOnly(const wxString& path);
 587
 588 // all deprecated functions below are deprecated in favour of wxFileName's methods
 589 #if WXWIN_COMPATIBILITY_2_8
 590
 591 wxDEPRECATED( WXDLLIMPEXP_BASE void wxDos2UnixFilename(char *s) );
 592 wxDEPRECATED( WXDLLIMPEXP_BASE void wxDos2UnixFilename(wchar_t *s) );
 593
 594 wxDEPRECATED_BUT_USED_INTERNALLY(
 595     WXDLLIMPEXP_BASE void wxUnix2DosFilename(char *s) );
 596 wxDEPRECATED_BUT_USED_INTERNALLY(
 597     WXDLLIMPEXP_BASE void wxUnix2DosFilename(wchar_t *s) );
 598
 599 // Strip the extension, in situ
 600 // Deprecated in favour of wxFileName::StripExtension() but notice that their
 601 // behaviour is slightly different, see the manual
 602 wxDEPRECATED( WXDLLIMPEXP_BASE void wxStripExtension(char *buffer) );
 603 wxDEPRECATED( WXDLLIMPEXP_BASE void wxStripExtension(wchar_t *buffer) );
 604 wxDEPRECATED( WXDLLIMPEXP_BASE void wxStripExtension(wxString& buffer) );
 605
 606 // Get a temporary filename
 607 wxDEPRECATED_BUT_USED_INTERNALLY( WXDLLIMPEXP_BASE wxChar* wxGetTempFileName(const wxString& prefix, wxChar *buf = NULL) );
 608 wxDEPRECATED_BUT_USED_INTERNALLY( WXDLLIMPEXP_BASE bool wxGetTempFileName(const wxString& prefix, wxString& buf) );
 609
 610 // Expand file name (~/ and ${OPENWINHOME}/ stuff)
 611 wxDEPRECATED_BUT_USED_INTERNALLY( WXDLLIMPEXP_BASE char* wxExpandPath(char *dest, const wxString& path) );
 612 wxDEPRECATED_BUT_USED_INTERNALLY( WXDLLIMPEXP_BASE wchar_t* wxExpandPath(wchar_t *dest, const wxString& path) );
 613     // DEPRECATED: use wxFileName::Normalize(wxPATH_NORM_ENV_VARS)
 614
 615 // Contract w.r.t environment (</usr/openwin/lib, OPENWHOME> -> ${OPENWINHOME}/lib)
 616 // and make (if under the home tree) relative to home
 617 // [caller must copy-- volatile]
 618 wxDEPRECATED(
 619 WXDLLIMPEXP_BASE wxChar* wxContractPath(const wxString& filename,
 620                                    const wxString& envname = wxEmptyString,
 621                                    const wxString& user = wxEmptyString) );
 622     // DEPRECATED: use wxFileName::ReplaceEnvVariable and wxFileName::ReplaceHomeDir
 623
 624 // Destructive removal of /./ and /../ stuff
 625 wxDEPRECATED_BUT_USED_INTERNALLY( WXDLLIMPEXP_BASE char* wxRealPath(char *path) );
 626 wxDEPRECATED_BUT_USED_INTERNALLY( WXDLLIMPEXP_BASE wchar_t* wxRealPath(wchar_t *path) );
 627 wxDEPRECATED_BUT_USED_INTERNALLY( WXDLLIMPEXP_BASE wxString wxRealPath(const wxString& path) );
 628     // DEPRECATED: use wxFileName::Normalize instead
 629
 630 // Allocate a copy of the full absolute path
 631 wxDEPRECATED( WXDLLIMPEXP_BASE wxChar* wxCopyAbsolutePath(const wxString& path) );
 632     // DEPRECATED: use wxFileName::MakeAbsolute instead
 633 #endif
 634
 635 // Get first file name matching given wild card.
 636 // Flags are reserved for future use.
 637 #define wxFILE  1
 638 #define wxDIR   2
 639 WXDLLIMPEXP_BASE wxString wxFindFirstFile(const wxString& spec, int flags = wxFILE);
 640 WXDLLIMPEXP_BASE wxString wxFindNextFile();
 641
 642 // Does the pattern contain wildcards?
 643 WXDLLIMPEXP_BASE bool wxIsWild(const wxString& pattern);
 644
 645 // Does the pattern match the text (usually a filename)?
 646 // If dot_special is true, doesn't match * against . (eliminating
 647 // `hidden' dot files)
 648 WXDLLIMPEXP_BASE bool wxMatchWild(const wxString& pattern,  const wxString& text, bool dot_special = true);
 649
 650 // Concatenate two files to form third
 651 WXDLLIMPEXP_BASE bool wxConcatFiles(const wxString& file1, const wxString& file2, const wxString& file3);
 652
 653 // Copy file1 to file2
 654 WXDLLIMPEXP_BASE bool wxCopyFile(const wxString& file1, const wxString& file2,
 655                                  bool overwrite = true);
 656
 657 // Remove file
 658 WXDLLIMPEXP_BASE bool wxRemoveFile(const wxString& file);
 659
 660 // Rename file
 661 WXDLLIMPEXP_BASE bool wxRenameFile(const wxString& file1, const wxString& file2, bool overwrite = true);
 662
 663 // Get current working directory.
 664 #if WXWIN_COMPATIBILITY_2_6
 665 // If buf is NULL, allocates space using new, else
 666 // copies into buf.
 667 // IMPORTANT NOTE getcwd is know not to work under some releases
 668 // of Win32s 1.3, according to MS release notes!
 669 wxDEPRECATED( WXDLLIMPEXP_BASE wxChar* wxGetWorkingDirectory(wxChar *buf = NULL, int sz = 1000) );
 670 // new and preferred version of wxGetWorkingDirectory
 671 // NB: can't have the same name because of overloading ambiguity
 672 #endif // WXWIN_COMPATIBILITY_2_6
 673 WXDLLIMPEXP_BASE wxString wxGetCwd();
 674
 675 // Set working directory
 676 WXDLLIMPEXP_BASE bool wxSetWorkingDirectory(const wxString& d);
 677
 678 // Make directory
 679 WXDLLIMPEXP_BASE bool wxMkdir(const wxString& dir, int perm = wxS_DIR_DEFAULT);
 680
 681 // Remove directory. Flags reserved for future use.
 682 WXDLLIMPEXP_BASE bool wxRmdir(const wxString& dir, int flags = 0);
 683
 684 // Return the type of an open file
 685 WXDLLIMPEXP_BASE wxFileKind wxGetFileKind(int fd);
 686 WXDLLIMPEXP_BASE wxFileKind wxGetFileKind(FILE *fp);
 687
 688 #if WXWIN_COMPATIBILITY_2_6
 689 // compatibility defines, don't use in new code
 690 wxDEPRECATED( inline bool wxPathExists(const wxChar *pszPathName) );
 691 inline bool wxPathExists(const wxChar *pszPathName)
 692 {
 693     return wxDirExists(pszPathName);
 694 }
 695 #endif //WXWIN_COMPATIBILITY_2_6
 696
 697 // permissions; these functions work both on files and directories:
 698 WXDLLIMPEXP_BASE bool wxIsWritable(const wxString &path);
 699 WXDLLIMPEXP_BASE bool wxIsReadable(const wxString &path);
 700 WXDLLIMPEXP_BASE bool wxIsExecutable(const wxString &path);
 701
 702 // ----------------------------------------------------------------------------
 703 // separators in file names
 704 // ----------------------------------------------------------------------------
 705
 706 // between file name and extension
 707 #define wxFILE_SEP_EXT        wxT('.')
 708
 709 // between drive/volume name and the path
 710 #define wxFILE_SEP_DSK        wxT(':')
 711
 712 // between the path components
 713 #define wxFILE_SEP_PATH_DOS   wxT('\\')
 714 #define wxFILE_SEP_PATH_UNIX  wxT('/')
 715 #define wxFILE_SEP_PATH_MAC   wxT(':')
 716 #define wxFILE_SEP_PATH_VMS   wxT('.') // VMS also uses '[' and ']'
 717
 718 // separator in the path list (as in PATH environment variable)
 719 // there is no PATH variable in Classic Mac OS so just use the
 720 // semicolon (it must be different from the file name separator)
 721 // NB: these are strings and not characters on purpose!
 722 #define wxPATH_SEP_DOS        wxT(";")
 723 #define wxPATH_SEP_UNIX       wxT(":")
 724 #define wxPATH_SEP_MAC        wxT(";")
 725
 726 // platform independent versions
 727 #if defined(__UNIX__) && !defined(__OS2__)
 728   // CYGWIN also uses UNIX settings
 729   #define wxFILE_SEP_PATH     wxFILE_SEP_PATH_UNIX
 730   #define wxPATH_SEP          wxPATH_SEP_UNIX
 731 #elif defined(__MAC__)
 732   #define wxFILE_SEP_PATH     wxFILE_SEP_PATH_MAC
 733   #define wxPATH_SEP          wxPATH_SEP_MAC
 734 #else   // Windows and OS/2
 735   #define wxFILE_SEP_PATH     wxFILE_SEP_PATH_DOS
 736   #define wxPATH_SEP          wxPATH_SEP_DOS
 737 #endif  // Unix/Windows
 738
 739 // this is useful for wxString::IsSameAs(): to compare two file names use
 740 // filename1.IsSameAs(filename2, wxARE_FILENAMES_CASE_SENSITIVE)
 741 #if defined(__UNIX__) && !defined(__DARWIN__) && !defined(__OS2__)
 742   #define wxARE_FILENAMES_CASE_SENSITIVE  true
 743 #else   // Windows, Mac OS and OS/2
 744   #define wxARE_FILENAMES_CASE_SENSITIVE  false
 745 #endif  // Unix/Windows
 746
 747 // is the char a path separator?
 748 inline bool wxIsPathSeparator(wxChar c)
 749 {
 750     // under DOS/Windows we should understand both Unix and DOS file separators
 751 #if ( defined(__UNIX__) && !defined(__OS2__) )|| defined(__MAC__)
 752     return c == wxFILE_SEP_PATH;
 753 #else
 754     return c == wxFILE_SEP_PATH_DOS || c == wxFILE_SEP_PATH_UNIX;
 755 #endif
 756 }
 757
 758 // does the string ends with path separator?
 759 WXDLLIMPEXP_BASE bool wxEndsWithPathSeparator(const wxString& filename);
 760
 761 #if WXWIN_COMPATIBILITY_2_8
 762 // split the full path into path (including drive for DOS), name and extension
 763 // (understands both '/' and '\\')
 764 // Deprecated in favour of wxFileName::SplitPath
 765 wxDEPRECATED( WXDLLIMPEXP_BASE void wxSplitPath(const wxString& fileName,
 766                                                 wxString *pstrPath,
 767                                                 wxString *pstrName,
 768                                                 wxString *pstrExt) );
 769 #endif
 770
 771 // find a file in a list of directories, returns false if not found
 772 WXDLLIMPEXP_BASE bool wxFindFileInPath(wxString *pStr, const wxString& szPath, const wxString& szFile);
 773
 774 // Get the OS directory if appropriate (such as the Windows directory).
 775 // On non-Windows platform, probably just return the empty string.
 776 WXDLLIMPEXP_BASE wxString wxGetOSDirectory();
 777
 778 #if wxUSE_DATETIME
 779
 780 // Get file modification time
 781 WXDLLIMPEXP_BASE time_t wxFileModificationTime(const wxString& filename);
 782
 783 #endif // wxUSE_DATETIME
 784
 785 // Parses the wildCard, returning the number of filters.
 786 // Returns 0 if none or if there's a problem,
 787 // The arrays will contain an equal number of items found before the error.
 788 // wildCard is in the form:
 789 // "All files (*)|*|Image Files (*.jpeg *.png)|*.jpg;*.png"
 790 WXDLLIMPEXP_BASE int wxParseCommonDialogsFilter(const wxString& wildCard, wxArrayString& descriptions, wxArrayString& filters);
 791
 792 // ----------------------------------------------------------------------------
 793 // classes
 794 // ----------------------------------------------------------------------------
 795
 796 #ifdef __UNIX__
 797
 798 // set umask to the given value in ctor and reset it to the old one in dtor
 799 class WXDLLIMPEXP_BASE wxUmaskChanger
 800 {
 801 public:
 802     // change the umask to the given one if it is not -1: this allows to write
 803     // the same code whether you really want to change umask or not, as is in
 804     // wxFileConfig::Flush() for example
 805     wxUmaskChanger(int umaskNew)
 806     {
 807         m_umaskOld = umaskNew == -1 ? -1 : (int)umask((mode_t)umaskNew);
 808     }
 809
 810     ~wxUmaskChanger()
 811     {
 812         if ( m_umaskOld != -1 )
 813             umask((mode_t)m_umaskOld);
 814     }
 815
 816 private:
 817     int m_umaskOld;
 818 };
 819
 820 // this macro expands to an "anonymous" wxUmaskChanger object under Unix and
 821 // nothing elsewhere
 822 #define wxCHANGE_UMASK(m) wxUmaskChanger wxMAKE_UNIQUE_NAME(umaskChanger_)(m)
 823
 824 #else // !__UNIX__
 825
 826 #define wxCHANGE_UMASK(m)
 827
 828 #endif // __UNIX__/!__UNIX__
 829
 830
 831 // Path searching
 832 class WXDLLIMPEXP_BASE wxPathList : public wxArrayString
 833 {
 834 public:
 835     wxPathList() {}
 836     wxPathList(const wxArrayString &arr)
 837         { Add(arr); }
 838
 839     // Adds all paths in environment variable
 840     void AddEnvList(const wxString& envVariable);
 841
 842     // Adds given path to this list
 843     bool Add(const wxString& path);
 844     void Add(const wxArrayString &paths);
 845
 846     // Find the first full path for which the file exists
 847     wxString FindValidPath(const wxString& filename) const;
 848
 849     // Find the first full path for which the file exists; ensure it's an
 850     // absolute path that gets returned.
 851     wxString FindAbsoluteValidPath(const wxString& filename) const;
 852
 853     // Given full path and filename, add path to list
 854     bool EnsureFileAccessible(const wxString& path);
 855
 856 #if WXWIN_COMPATIBILITY_2_6
 857     // Returns true if the path is in the list
 858     wxDEPRECATED( bool Member(const wxString& path) const );
 859 #endif
 860 };
 861
 862 #endif // _WX_FILEFN_H_