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 // Copyright:   (c) 1998 Julian Smart
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef   _FILEFN_H_
  12 #define   _FILEFN_H_
  13
  14 #include "wx/list.h"
  15 #include "wx/arrstr.h"
  16
  17 #ifdef __WXWINCE__
  18     #include "wx/msw/wince/time.h"
  19     #include "wx/msw/private.h"
  20 #else
  21     #include <time.h>
  22 #endif
  23
  24 #ifndef __WXWINCE__
  25     #include <sys/types.h>
  26     #include <sys/stat.h>
  27 #endif
  28
  29 #ifdef __OS2__
  30 // need to check for __OS2__ first since currently both
  31 // __OS2__ and __UNIX__ are defined.
  32     #include <process.h>
  33     #include "wx/os2/private.h"
  34     #ifdef __WATCOMC__
  35         #include <direct.h>
  36     #endif
  37     #include <io.h>
  38     #ifdef __EMX__
  39         #include <unistd.h>
  40     #endif
  41 #elif defined(__UNIX__)
  42     #include <unistd.h>
  43     #include <dirent.h>
  44 #endif
  45
  46 #if defined(__WINDOWS__) && !defined(__WXMICROWIN__)
  47 #if !defined( __GNUWIN32__ ) && !defined(__WXWINCE__) && !defined(__CYGWIN__)
  48     #include <direct.h>
  49     #include <dos.h>
  50     #include <io.h>
  51 #endif // __WINDOWS__
  52 #endif // native Win compiler
  53
  54 #if defined(__DOS__)
  55     #ifdef __WATCOMC__
  56         #include <direct.h>
  57         #include <dos.h>
  58         #include <io.h>
  59     #endif
  60     #ifdef __DJGPP__
  61         #include <io.h>
  62         #include <unistd.h>
  63     #endif
  64 #endif
  65
  66 #ifdef __BORLANDC__ // Please someone tell me which version of Borland needs
  67                     // this (3.1 I believe) and how to test for it.
  68                     // If this works for Borland 4.0 as well, then no worries.
  69     #include <dir.h>
  70 #endif
  71
  72 #ifndef __WXWINCE__
  73     #include  <fcntl.h>       // O_RDONLY &c
  74 #endif
  75
  76 // ----------------------------------------------------------------------------
  77 // constants
  78 // ----------------------------------------------------------------------------
  79
  80 #if defined(__VISUALC__) || defined(__INTELC__) || defined(__DIGITALMARS__)
  81     typedef int mode_t;
  82 #endif
  83
  84 #ifdef __WXWINCE__
  85     typedef long off_t;
  86 #else
  87     // define off_t
  88     #if !defined(__WXMAC__) || defined(__UNIX__) || defined(__MACH__)
  89         #include  <sys/types.h>
  90     #else
  91         typedef long off_t;
  92     #endif
  93 #endif
  94
  95 #if (defined(__VISUALC__) && !defined(__WXWINCE__)) || (defined(__WINDOWS__) && defined (__INTELC__))
  96     typedef _off_t off_t;
  97 #elif defined(__SYMANTEC__)
  98     typedef long off_t;
  99 #endif
 100
 101 enum wxSeekMode
 102 {
 103   wxFromStart,
 104   wxFromCurrent,
 105   wxFromEnd
 106 };
 107
 108 enum wxFileKind
 109 {
 110   wxFILE_KIND_UNKNOWN,
 111   wxFILE_KIND_DISK,     // a file supporting seeking to arbitrary offsets
 112   wxFILE_KIND_TERMINAL, // a tty
 113   wxFILE_KIND_PIPE      // a pipe
 114 };
 115
 116 // we redefine these constants here because S_IREAD &c are _not_ standard
 117 // however, we do assume that the values correspond to the Unix umask bits
 118 enum wxPosixPermissions
 119 {
 120     // standard Posix names for these permission flags:
 121     wxS_IRUSR = 00400,
 122     wxS_IWUSR = 00200,
 123     wxS_IXUSR = 00100,
 124
 125     wxS_IRGRP = 00040,
 126     wxS_IWGRP = 00020,
 127     wxS_IXGRP = 00010,
 128
 129     wxS_IROTH = 00004,
 130     wxS_IWOTH = 00002,
 131     wxS_IXOTH = 00001,
 132
 133     // longer but more readable synonyms for the constants above:
 134     wxPOSIX_USER_READ = wxS_IRUSR,
 135     wxPOSIX_USER_WRITE = wxS_IWUSR,
 136     wxPOSIX_USER_EXECUTE = wxS_IXUSR,
 137
 138     wxPOSIX_GROUP_READ = wxS_IRGRP,
 139     wxPOSIX_GROUP_WRITE = wxS_IWGRP,
 140     wxPOSIX_GROUP_EXECUTE = wxS_IXGRP,
 141
 142     wxPOSIX_OTHERS_READ = wxS_IROTH,
 143     wxPOSIX_OTHERS_WRITE = wxS_IWOTH,
 144     wxPOSIX_OTHERS_EXECUTE = wxS_IXOTH,
 145
 146     // default mode for the new files: allow reading/writing them to everybody but
 147     // the effective file mode will be set after anding this value with umask and
 148     // so won't include wxS_IW{GRP,OTH} for the default 022 umask value
 149     wxS_DEFAULT = (wxPOSIX_USER_READ | wxPOSIX_USER_WRITE | \
 150                    wxPOSIX_GROUP_READ | wxPOSIX_GROUP_WRITE | \
 151                    wxPOSIX_OTHERS_READ | wxPOSIX_OTHERS_WRITE),
 152
 153     // default mode for the new directories (see wxFileName::Mkdir): allow
 154     // reading/writing/executing them to everybody, but just like wxS_DEFAULT
 155     // the effective directory mode will be set after anding this value with umask
 156     wxS_DIR_DEFAULT = (wxPOSIX_USER_READ | wxPOSIX_USER_WRITE | wxPOSIX_USER_EXECUTE | \
 157                        wxPOSIX_GROUP_READ | wxPOSIX_GROUP_WRITE | wxPOSIX_GROUP_EXECUTE | \
 158                        wxPOSIX_OTHERS_READ | wxPOSIX_OTHERS_WRITE | wxPOSIX_OTHERS_EXECUTE)
 159 };
 160
 161 // ----------------------------------------------------------------------------
 162 // declare our versions of low level file functions: some compilers prepend
 163 // underscores to the usual names, some also have Unicode versions of them
 164 // ----------------------------------------------------------------------------
 165
 166 // Wrappers around Win32 api functions like CreateFile, ReadFile and such
 167 // Implemented in filefnwce.cpp
 168 #if defined( __WXWINCE__)
 169     typedef __int64 wxFileOffset;
 170     #define wxFileOffsetFmtSpec wxT("I64")
 171     WXDLLIMPEXP_BASE int wxCRT_Open(const wxChar *filename, int oflag, int WXUNUSED(pmode));
 172     WXDLLIMPEXP_BASE int wxCRT_Access(const wxChar *name, int WXUNUSED(how));
 173     WXDLLIMPEXP_BASE int wxCRT_Chmod(const wxChar *name, int WXUNUSED(how));
 174     WXDLLIMPEXP_BASE int wxClose(int fd);
 175     WXDLLIMPEXP_BASE int wxFsync(int WXUNUSED(fd));
 176     WXDLLIMPEXP_BASE int wxRead(int fd, void *buf, unsigned int count);
 177     WXDLLIMPEXP_BASE int wxWrite(int fd, const void *buf, unsigned int count);
 178     WXDLLIMPEXP_BASE int wxEof(int fd);
 179     WXDLLIMPEXP_BASE wxFileOffset wxSeek(int fd, wxFileOffset offset, int origin);
 180     #define wxLSeek wxSeek
 181     WXDLLIMPEXP_BASE wxFileOffset wxTell(int fd);
 182
 183     // always Unicode under WinCE
 184     #define   wxCRT_MkDir      _wmkdir
 185     #define   wxCRT_RmDir      _wrmdir
 186     #define   wxCRT_Stat       _wstat
 187     #define   wxStructStat struct _stat
 188 #elif (defined(__WINDOWS__) || defined(__OS2__)) && \
 189       ( \
 190         (defined(__VISUALC__) || (defined(__WINDOWS__) && defined (__INTELC__))) || \
 191         defined(__MINGW64__) || \
 192         (defined(__MINGW32__) && !defined(__WINE__) && \
 193                                 wxCHECK_W32API_VERSION(0, 5)) || \
 194         defined(__DMC__) || \
 195         defined(__WATCOMC__) || \
 196         defined(__BORLANDC__) \
 197       )
 198
 199     // temporary defines just used immediately below
 200     #undef wxHAS_HUGE_FILES
 201     #undef wxHAS_HUGE_STDIO_FILES
 202
 203     // detect compilers which have support for huge files
 204     #if (defined(__VISUALC__) || (defined(__WINDOWS__) && defined (__INTELC__)))
 205         #define wxHAS_HUGE_FILES 1
 206     #elif defined(__MINGW32__) || defined(__MINGW64__)
 207         #define wxHAS_HUGE_FILES 1f
 208     #elif defined(_LARGE_FILES)
 209         #define wxHAS_HUGE_FILES 1
 210     #endif
 211
 212     // detect compilers which have support for huge stdio files
 213     #if wxCHECK_VISUALC_VERSION(8)
 214         #define wxHAS_HUGE_STDIO_FILES
 215         #define wxFseek _fseeki64
 216         #define wxFtell _ftelli64
 217     #elif wxCHECK_MINGW32_VERSION(3, 5) // mingw-runtime version (not gcc)
 218         #define wxHAS_HUGE_STDIO_FILES
 219         #define wxFseek fseeko64
 220         #define wxFtell ftello64
 221     #endif
 222
 223     // other Windows compilers (DMC, Watcom, and Borland) don't have huge file
 224     // support (or at least not all functions needed for it by wx) currently
 225
 226     // types
 227
 228     #ifdef wxHAS_HUGE_FILES
 229         typedef wxLongLong_t wxFileOffset;
 230         #define wxFileOffsetFmtSpec wxLongLongFmtSpec
 231     #else
 232         typedef off_t wxFileOffset;
 233     #endif
 234
 235     // at least Borland 5.5 doesn't like "struct ::stat" so don't use the scope
 236     // resolution operator present in wxPOSIX_IDENT for it
 237     #ifdef __BORLANDC__
 238         #define wxPOSIX_STRUCT(s)    struct s
 239     #else
 240         #define wxPOSIX_STRUCT(s)    struct wxPOSIX_IDENT(s)
 241     #endif
 242
 243     // Notice that Watcom is the only compiler to have a wide char
 244     // version of struct stat as well as a wide char stat function variant.
 245     // This was dropped since OW 1.4 "for consistency across platforms".
 246     //
 247     // Borland is also special in that it uses _stat with Unicode functions
 248     // (for MSVC compatibility?) but stat with ANSI ones
 249     #ifdef __BORLANDC__
 250         #if wxHAS_HUGE_FILES
 251             #define wxStructStat struct stati64
 252         #else
 253             #if wxUSE_UNICODE
 254                 #define wxStructStat struct _stat
 255             #else
 256                 #define wxStructStat struct stat
 257             #endif
 258         #endif
 259     #else // !__BORLANDC__
 260         #ifdef wxHAS_HUGE_FILES
 261             #if wxUSE_UNICODE && wxONLY_WATCOM_EARLIER_THAN(1,4)
 262                 #define wxStructStat struct _wstati64
 263             #else
 264                 #define wxStructStat struct _stati64
 265             #endif
 266         #else
 267             #if wxUSE_UNICODE && wxONLY_WATCOM_EARLIER_THAN(1,4)
 268                 #define wxStructStat struct _wstat
 269             #else
 270                 #define wxStructStat struct _stat
 271             #endif
 272         #endif
 273     #endif // __BORLANDC__/!__BORLANDC__
 274
 275
 276     // functions
 277
 278     // MSVC and compatible compilers prepend underscores to the POSIX function
 279     // names, other compilers don't and even if their later versions usually do
 280     // define the versions with underscores for MSVC compatibility, it's better
 281     // to avoid using them as they're not present in earlier versions and
 282     // always using the native functions spelling is easier than testing for
 283     // the versions
 284     #if defined(__BORLANDC__) || defined(__DMC__) || defined(__WATCOMC__) || defined(__MINGW64__)
 285         #define wxPOSIX_IDENT(func)    ::func
 286     #else // by default assume MSVC-compatible names
 287         #define wxPOSIX_IDENT(func)    _ ## func
 288         #define wxHAS_UNDERSCORES_IN_POSIX_IDENTS
 289     #endif
 290
 291     // first functions not working with strings, i.e. without ANSI/Unicode
 292     // complications
 293     #define   wxClose      wxPOSIX_IDENT(close)
 294
 295     #define wxRead         wxPOSIX_IDENT(read)
 296     #define wxWrite        wxPOSIX_IDENT(write)
 297
 298     #ifdef wxHAS_HUGE_FILES
 299         #ifndef __MINGW64__
 300             #define   wxSeek       wxPOSIX_IDENT(lseeki64)
 301             #define   wxLseek      wxPOSIX_IDENT(lseeki64)
 302             #define   wxTell       wxPOSIX_IDENT(telli64)
 303         #else
 304             // unfortunately, mingw-W64 is somewhat inconsistent...
 305             #define   wxSeek       _lseeki64
 306             #define   wxLseek      _lseeki64
 307             #define   wxTell       _telli64
 308         #endif
 309     #else // !wxHAS_HUGE_FILES
 310         #define   wxSeek       wxPOSIX_IDENT(lseek)
 311         #define   wxLseek      wxPOSIX_IDENT(lseek)
 312         #define   wxTell       wxPOSIX_IDENT(tell)
 313     #endif // wxHAS_HUGE_FILES/!wxHAS_HUGE_FILES
 314
 315     #ifndef __WATCOMC__
 316          #if !defined(__BORLANDC__) || (__BORLANDC__ > 0x540)
 317              // NB: this one is not POSIX and always has the underscore
 318              #define   wxFsync      _commit
 319
 320              // could be already defined by configure (Cygwin)
 321              #ifndef HAVE_FSYNC
 322                  #define HAVE_FSYNC
 323              #endif
 324         #endif // BORLANDC
 325     #endif
 326
 327     #define   wxEof        wxPOSIX_IDENT(eof)
 328
 329     // then the functions taking strings
 330
 331     // first the ANSI versions
 332     #define   wxCRT_OpenA       wxPOSIX_IDENT(open)
 333     #define   wxCRT_AccessA     wxPOSIX_IDENT(access)
 334     #define   wxCRT_ChmodA      wxPOSIX_IDENT(chmod)
 335     #define   wxCRT_MkDirA      wxPOSIX_IDENT(mkdir)
 336     #define   wxCRT_RmDirA      wxPOSIX_IDENT(rmdir)
 337     #ifdef wxHAS_HUGE_FILES
 338         // MinGW-64 provides underscore-less versions of all file functions
 339         // except for this one.
 340         #ifdef __MINGW64__
 341             #define   wxCRT_StatA       _stati64
 342         #else
 343             #define   wxCRT_StatA       wxPOSIX_IDENT(stati64)
 344         #endif
 345     #else
 346         // Unfortunately Watcom is not consistent
 347         #if defined(__OS2__) && defined(__WATCOMC__)
 348             #define   wxCRT_StatA       _stat
 349         #else
 350             #define   wxCRT_StatA       wxPOSIX_IDENT(stat)
 351         #endif
 352     #endif
 353
 354     // then wide char ones
 355     #if wxUSE_UNICODE
 356         // special workaround for buggy wopen() in bcc 5.5
 357         #if defined(__BORLANDC__) && \
 358             (__BORLANDC__ >= 0x550 && __BORLANDC__ <= 0x551)
 359                 WXDLLIMPEXP_BASE int wxCRT_OpenW(const wxChar *pathname,
 360                                                  int flags, mode_t mode);
 361         #else
 362             #define wxCRT_OpenW       _wopen
 363         #endif
 364
 365         #define   wxCRT_AccessW     _waccess
 366         #define   wxCRT_ChmodW      _wchmod
 367         #define   wxCRT_MkDirW      _wmkdir
 368         #define   wxCRT_RmDirW      _wrmdir
 369         #ifdef wxHAS_HUGE_FILES
 370             #define   wxCRT_StatW       _wstati64
 371         #else
 372             #define   wxCRT_StatW       _wstat
 373         #endif
 374     #endif // wxUSE_UNICODE
 375
 376
 377     // finally the default char-type versions
 378     #if wxUSE_UNICODE
 379         #if wxUSE_UNICODE_MSLU || defined(__WX_STRICT_ANSI_GCC__)
 380             // implement the missing file functions in Win9x ourselves
 381             WXDLLIMPEXP_BASE int wxMSLU__wopen(const wxChar *name,
 382                                                int flags, int mode);
 383             WXDLLIMPEXP_BASE int wxMSLU__waccess(const wxChar *name,
 384                                                  int mode);
 385             WXDLLIMPEXP_BASE int wxMSLU__wchmod(const wxChar *name,
 386                                                  int mode);
 387             WXDLLIMPEXP_BASE int wxMSLU__wmkdir(const wxChar *name);
 388             WXDLLIMPEXP_BASE int wxMSLU__wrmdir(const wxChar *name);
 389
 390             WXDLLIMPEXP_BASE int
 391             wxMSLU__wstat(const wxChar *name, wxStructStat *buffer);
 392
 393             #define   wxCRT_Open       wxMSLU__wopen
 394
 395             #define   wxCRT_Access     wxMSLU__waccess
 396             #define   wxCRT_Chmod      wxMSLU__wchmod
 397             #define   wxCRT_MkDir      wxMSLU__wmkdir
 398             #define   wxCRT_RmDir      wxMSLU__wrmdir
 399             #define   wxCRT_Stat       wxMSLU__wstat
 400         #else // !wxUSE_UNICODE_MSLU
 401             #define wxCRT_Open      wxCRT_OpenW
 402             #define wxCRT_Access    wxCRT_AccessW
 403             #define wxCRT_Chmod     wxCRT_ChmodW
 404             #define wxCRT_MkDir     wxCRT_MkDirW
 405             #define wxCRT_RmDir     wxCRT_RmDirW
 406             #define wxCRT_Stat      wxCRT_StatW
 407         #endif // wxUSE_UNICODE_MSLU/!wxUSE_UNICODE_MSLU
 408     #else // !wxUSE_UNICODE
 409         #define wxCRT_Open      wxCRT_OpenA
 410         #define wxCRT_Access    wxCRT_AccessA
 411         #define wxCRT_Chmod     wxCRT_ChmodA
 412         #define wxCRT_MkDir     wxCRT_MkDirA
 413         #define wxCRT_RmDir     wxCRT_RmDirA
 414         #define wxCRT_Stat      wxCRT_StatA
 415     #endif // wxUSE_UNICODE/!wxUSE_UNICODE
 416
 417
 418     // constants (unless already defined by the user code)
 419     #ifdef wxHAS_UNDERSCORES_IN_POSIX_IDENTS
 420         #ifndef O_RDONLY
 421             #define   O_RDONLY    _O_RDONLY
 422             #define   O_WRONLY    _O_WRONLY
 423             #define   O_RDWR      _O_RDWR
 424             #define   O_EXCL      _O_EXCL
 425             #define   O_CREAT     _O_CREAT
 426             #define   O_BINARY    _O_BINARY
 427         #endif
 428
 429         #ifndef S_IFMT
 430             #define   S_IFMT      _S_IFMT
 431             #define   S_IFDIR     _S_IFDIR
 432             #define   S_IFREG     _S_IFREG
 433         #endif
 434     #endif // wxHAS_UNDERSCORES_IN_POSIX_IDENTS
 435
 436     #ifdef wxHAS_HUGE_FILES
 437         // wxFile is present and supports large files.
 438         #if wxUSE_FILE
 439             #define wxHAS_LARGE_FILES
 440         #endif
 441         // wxFFile is present and supports large files
 442         #if wxUSE_FFILE && defined wxHAS_HUGE_STDIO_FILES
 443             #define wxHAS_LARGE_FFILES
 444         #endif
 445     #endif
 446
 447     // private defines, undefine so that nobody gets tempted to use
 448     #undef wxHAS_HUGE_FILES
 449     #undef wxHAS_HUGE_STDIO_FILES
 450 #else // Unix or Windows using unknown compiler, assume POSIX supported
 451     typedef off_t wxFileOffset;
 452     #ifdef HAVE_LARGEFILE_SUPPORT
 453         #define wxFileOffsetFmtSpec wxLongLongFmtSpec
 454         wxCOMPILE_TIME_ASSERT( sizeof(off_t) == sizeof(wxLongLong_t),
 455                                 BadFileSizeType );
 456         // wxFile is present and supports large files
 457         #if wxUSE_FILE
 458             #define wxHAS_LARGE_FILES
 459         #endif
 460         // wxFFile is present and supports large files
 461         #if wxUSE_FFILE && (SIZEOF_LONG == 8 || defined HAVE_FSEEKO)
 462             #define wxHAS_LARGE_FFILES
 463         #endif
 464         #ifdef HAVE_FSEEKO
 465             #define wxFseek fseeko
 466             #define wxFtell ftello
 467         #endif
 468     #else
 469         #define wxFileOffsetFmtSpec wxT("")
 470     #endif
 471     // functions
 472     #define   wxClose      close
 473     #define   wxRead       ::read
 474     #define   wxWrite      ::write
 475     #define   wxLseek      lseek
 476     #define   wxSeek       lseek
 477     #define   wxFsync      fsync
 478     #define   wxEof        eof
 479     #define   wxCRT_MkDir      mkdir
 480     #define   wxCRT_RmDir      rmdir
 481
 482     #define   wxTell(fd)   lseek(fd, 0, SEEK_CUR)
 483
 484     #define   wxStructStat struct stat
 485
 486     #define   wxCRT_Open       open
 487     #define   wxCRT_Stat       stat
 488     #define   wxCRT_Lstat      lstat
 489     #define   wxCRT_Access     access
 490     #define   wxCRT_Chmod      chmod
 491
 492     #define wxHAS_NATIVE_LSTAT
 493 #endif // platforms
 494
 495 // if the platform doesn't have symlinks, define wxCRT_Lstat to be the same as
 496 // wxCRT_Stat to avoid #ifdefs in the code using it
 497 #ifndef wxHAS_NATIVE_LSTAT
 498     #define wxCRT_Lstat wxCRT_Stat
 499 #endif
 500
 501 // define wxFseek/wxFtell to large file versions if available (done above) or
 502 // to fseek/ftell if not, to save ifdefs in using code
 503 #ifndef wxFseek
 504     #define wxFseek fseek
 505 #endif
 506 #ifndef wxFtell
 507     #define wxFtell ftell
 508 #endif
 509
 510 inline int wxAccess(const wxString& path, mode_t mode)
 511     { return wxCRT_Access(path.fn_str(), mode); }
 512 inline int wxChmod(const wxString& path, mode_t mode)
 513     { return wxCRT_Chmod(path.fn_str(), mode); }
 514 inline int wxOpen(const wxString& path, int flags, mode_t mode)
 515     { return wxCRT_Open(path.fn_str(), flags, mode); }
 516
 517 // FIXME-CE: provide our own implementations of the missing CRT functions
 518 #ifndef __WXWINCE__
 519 inline int wxStat(const wxString& path, wxStructStat *buf)
 520     { return wxCRT_Stat(path.fn_str(), buf); }
 521 inline int wxLstat(const wxString& path, wxStructStat *buf)
 522     { return wxCRT_Lstat(path.fn_str(), buf); }
 523 inline int wxRmDir(const wxString& path)
 524     { return wxCRT_RmDir(path.fn_str()); }
 525 #if (defined(__WINDOWS__) && !defined(__CYGWIN__)) \
 526         || (defined(__OS2__) && defined(__WATCOMC__))
 527 inline int wxMkDir(const wxString& path, mode_t WXUNUSED(mode) = 0)
 528     { return wxCRT_MkDir(path.fn_str()); }
 529 #else
 530 inline int wxMkDir(const wxString& path, mode_t mode)
 531     { return wxCRT_MkDir(path.fn_str(), mode); }
 532 #endif
 533 #endif // !__WXWINCE__
 534
 535 #ifdef O_BINARY
 536     #define wxO_BINARY O_BINARY
 537 #else
 538     #define wxO_BINARY 0
 539 #endif
 540
 541 #if defined(__VISAGECPP__) && __IBMCPP__ >= 400
 542 //
 543 // VisualAge C++ V4.0 cannot have any external linkage const decs
 544 // in headers included by more than one primary source
 545 //
 546 extern const int wxInvalidOffset;
 547 #else
 548 const int wxInvalidOffset = -1;
 549 #endif
 550
 551 // ----------------------------------------------------------------------------
 552 // functions
 553 // ----------------------------------------------------------------------------
 554 WXDLLIMPEXP_BASE bool wxFileExists(const wxString& filename);
 555
 556 // does the path exist? (may have or not '/' or '\\' at the end)
 557 WXDLLIMPEXP_BASE bool wxDirExists(const wxString& pathName);
 558
 559 WXDLLIMPEXP_BASE bool wxIsAbsolutePath(const wxString& filename);
 560
 561 // Get filename
 562 WXDLLIMPEXP_BASE wxChar* wxFileNameFromPath(wxChar *path);
 563 WXDLLIMPEXP_BASE wxString wxFileNameFromPath(const wxString& path);
 564
 565 // Get directory
 566 WXDLLIMPEXP_BASE wxString wxPathOnly(const wxString& path);
 567
 568 // all deprecated functions below are deprecated in favour of wxFileName's methods
 569 #if WXWIN_COMPATIBILITY_2_8
 570
 571 wxDEPRECATED( WXDLLIMPEXP_BASE void wxDos2UnixFilename(char *s) );
 572 wxDEPRECATED( WXDLLIMPEXP_BASE void wxDos2UnixFilename(wchar_t *s) );
 573
 574 wxDEPRECATED_BUT_USED_INTERNALLY(
 575     WXDLLIMPEXP_BASE void wxUnix2DosFilename(char *s) );
 576 wxDEPRECATED_BUT_USED_INTERNALLY(
 577     WXDLLIMPEXP_BASE void wxUnix2DosFilename(wchar_t *s) );
 578
 579 // Strip the extension, in situ
 580 // Deprecated in favour of wxFileName::StripExtension() but notice that their
 581 // behaviour is slightly different, see the manual
 582 wxDEPRECATED( WXDLLIMPEXP_BASE void wxStripExtension(char *buffer) );
 583 wxDEPRECATED( WXDLLIMPEXP_BASE void wxStripExtension(wchar_t *buffer) );
 584 wxDEPRECATED( WXDLLIMPEXP_BASE void wxStripExtension(wxString& buffer) );
 585
 586 // Get a temporary filename
 587 wxDEPRECATED_BUT_USED_INTERNALLY( WXDLLIMPEXP_BASE wxChar* wxGetTempFileName(const wxString& prefix, wxChar *buf = NULL) );
 588 wxDEPRECATED_BUT_USED_INTERNALLY( WXDLLIMPEXP_BASE bool wxGetTempFileName(const wxString& prefix, wxString& buf) );
 589
 590 // Expand file name (~/ and ${OPENWINHOME}/ stuff)
 591 wxDEPRECATED_BUT_USED_INTERNALLY( WXDLLIMPEXP_BASE char* wxExpandPath(char *dest, const wxString& path) );
 592 wxDEPRECATED_BUT_USED_INTERNALLY( WXDLLIMPEXP_BASE wchar_t* wxExpandPath(wchar_t *dest, const wxString& path) );
 593     // DEPRECATED: use wxFileName::Normalize(wxPATH_NORM_ENV_VARS)
 594
 595 // Contract w.r.t environment (</usr/openwin/lib, OPENWHOME> -> ${OPENWINHOME}/lib)
 596 // and make (if under the home tree) relative to home
 597 // [caller must copy-- volatile]
 598 wxDEPRECATED(
 599 WXDLLIMPEXP_BASE wxChar* wxContractPath(const wxString& filename,
 600                                    const wxString& envname = wxEmptyString,
 601                                    const wxString& user = wxEmptyString) );
 602     // DEPRECATED: use wxFileName::ReplaceEnvVariable and wxFileName::ReplaceHomeDir
 603
 604 // Destructive removal of /./ and /../ stuff
 605 wxDEPRECATED_BUT_USED_INTERNALLY( WXDLLIMPEXP_BASE char* wxRealPath(char *path) );
 606 wxDEPRECATED_BUT_USED_INTERNALLY( WXDLLIMPEXP_BASE wchar_t* wxRealPath(wchar_t *path) );
 607 wxDEPRECATED_BUT_USED_INTERNALLY( WXDLLIMPEXP_BASE wxString wxRealPath(const wxString& path) );
 608     // DEPRECATED: use wxFileName::Normalize instead
 609
 610 // Allocate a copy of the full absolute path
 611 wxDEPRECATED( WXDLLIMPEXP_BASE wxChar* wxCopyAbsolutePath(const wxString& path) );
 612     // DEPRECATED: use wxFileName::MakeAbsolute instead
 613 #endif
 614
 615 // Get first file name matching given wild card.
 616 // Flags are reserved for future use.
 617 #define wxFILE  1
 618 #define wxDIR   2
 619 WXDLLIMPEXP_BASE wxString wxFindFirstFile(const wxString& spec, int flags = wxFILE);
 620 WXDLLIMPEXP_BASE wxString wxFindNextFile();
 621
 622 // Does the pattern contain wildcards?
 623 WXDLLIMPEXP_BASE bool wxIsWild(const wxString& pattern);
 624
 625 // Does the pattern match the text (usually a filename)?
 626 // If dot_special is true, doesn't match * against . (eliminating
 627 // `hidden' dot files)
 628 WXDLLIMPEXP_BASE bool wxMatchWild(const wxString& pattern,  const wxString& text, bool dot_special = true);
 629
 630 // Concatenate two files to form third
 631 WXDLLIMPEXP_BASE bool wxConcatFiles(const wxString& file1, const wxString& file2, const wxString& file3);
 632
 633 // Copy file1 to file2
 634 WXDLLIMPEXP_BASE bool wxCopyFile(const wxString& file1, const wxString& file2,
 635                                  bool overwrite = true);
 636
 637 // Remove file
 638 WXDLLIMPEXP_BASE bool wxRemoveFile(const wxString& file);
 639
 640 // Rename file
 641 WXDLLIMPEXP_BASE bool wxRenameFile(const wxString& file1, const wxString& file2, bool overwrite = true);
 642
 643 // Get current working directory.
 644 #if WXWIN_COMPATIBILITY_2_6
 645 // If buf is NULL, allocates space using new, else
 646 // copies into buf.
 647 // IMPORTANT NOTE getcwd is know not to work under some releases
 648 // of Win32s 1.3, according to MS release notes!
 649 wxDEPRECATED( WXDLLIMPEXP_BASE wxChar* wxGetWorkingDirectory(wxChar *buf = NULL, int sz = 1000) );
 650 // new and preferred version of wxGetWorkingDirectory
 651 // NB: can't have the same name because of overloading ambiguity
 652 #endif // WXWIN_COMPATIBILITY_2_6
 653 WXDLLIMPEXP_BASE wxString wxGetCwd();
 654
 655 // Set working directory
 656 WXDLLIMPEXP_BASE bool wxSetWorkingDirectory(const wxString& d);
 657
 658 // Make directory
 659 WXDLLIMPEXP_BASE bool wxMkdir(const wxString& dir, int perm = wxS_DIR_DEFAULT);
 660
 661 // Remove directory. Flags reserved for future use.
 662 WXDLLIMPEXP_BASE bool wxRmdir(const wxString& dir, int flags = 0);
 663
 664 // Return the type of an open file
 665 WXDLLIMPEXP_BASE wxFileKind wxGetFileKind(int fd);
 666 WXDLLIMPEXP_BASE wxFileKind wxGetFileKind(FILE *fp);
 667
 668 #if WXWIN_COMPATIBILITY_2_6
 669 // compatibility defines, don't use in new code
 670 wxDEPRECATED( inline bool wxPathExists(const wxChar *pszPathName) );
 671 inline bool wxPathExists(const wxChar *pszPathName)
 672 {
 673     return wxDirExists(pszPathName);
 674 }
 675 #endif //WXWIN_COMPATIBILITY_2_6
 676
 677 // permissions; these functions work both on files and directories:
 678 WXDLLIMPEXP_BASE bool wxIsWritable(const wxString &path);
 679 WXDLLIMPEXP_BASE bool wxIsReadable(const wxString &path);
 680 WXDLLIMPEXP_BASE bool wxIsExecutable(const wxString &path);
 681
 682 // ----------------------------------------------------------------------------
 683 // separators in file names
 684 // ----------------------------------------------------------------------------
 685
 686 // between file name and extension
 687 #define wxFILE_SEP_EXT        wxT('.')
 688
 689 // between drive/volume name and the path
 690 #define wxFILE_SEP_DSK        wxT(':')
 691
 692 // between the path components
 693 #define wxFILE_SEP_PATH_DOS   wxT('\\')
 694 #define wxFILE_SEP_PATH_UNIX  wxT('/')
 695 #define wxFILE_SEP_PATH_MAC   wxT(':')
 696 #define wxFILE_SEP_PATH_VMS   wxT('.') // VMS also uses '[' and ']'
 697
 698 // separator in the path list (as in PATH environment variable)
 699 // there is no PATH variable in Classic Mac OS so just use the
 700 // semicolon (it must be different from the file name separator)
 701 // NB: these are strings and not characters on purpose!
 702 #define wxPATH_SEP_DOS        wxT(";")
 703 #define wxPATH_SEP_UNIX       wxT(":")
 704 #define wxPATH_SEP_MAC        wxT(";")
 705
 706 // platform independent versions
 707 #if defined(__UNIX__) && !defined(__OS2__)
 708   // CYGWIN also uses UNIX settings
 709   #define wxFILE_SEP_PATH     wxFILE_SEP_PATH_UNIX
 710   #define wxPATH_SEP          wxPATH_SEP_UNIX
 711 #elif defined(__MAC__)
 712   #define wxFILE_SEP_PATH     wxFILE_SEP_PATH_MAC
 713   #define wxPATH_SEP          wxPATH_SEP_MAC
 714 #else   // Windows and OS/2
 715   #define wxFILE_SEP_PATH     wxFILE_SEP_PATH_DOS
 716   #define wxPATH_SEP          wxPATH_SEP_DOS
 717 #endif  // Unix/Windows
 718
 719 // this is useful for wxString::IsSameAs(): to compare two file names use
 720 // filename1.IsSameAs(filename2, wxARE_FILENAMES_CASE_SENSITIVE)
 721 #if defined(__UNIX__) && !defined(__DARWIN__) && !defined(__OS2__)
 722   #define wxARE_FILENAMES_CASE_SENSITIVE  true
 723 #else   // Windows, Mac OS and OS/2
 724   #define wxARE_FILENAMES_CASE_SENSITIVE  false
 725 #endif  // Unix/Windows
 726
 727 // is the char a path separator?
 728 inline bool wxIsPathSeparator(wxChar c)
 729 {
 730     // under DOS/Windows we should understand both Unix and DOS file separators
 731 #if ( defined(__UNIX__) && !defined(__OS2__) )|| defined(__MAC__)
 732     return c == wxFILE_SEP_PATH;
 733 #else
 734     return c == wxFILE_SEP_PATH_DOS || c == wxFILE_SEP_PATH_UNIX;
 735 #endif
 736 }
 737
 738 // does the string ends with path separator?
 739 WXDLLIMPEXP_BASE bool wxEndsWithPathSeparator(const wxString& filename);
 740
 741 #if WXWIN_COMPATIBILITY_2_8
 742 // split the full path into path (including drive for DOS), name and extension
 743 // (understands both '/' and '\\')
 744 // Deprecated in favour of wxFileName::SplitPath
 745 wxDEPRECATED( WXDLLIMPEXP_BASE void wxSplitPath(const wxString& fileName,
 746                                                 wxString *pstrPath,
 747                                                 wxString *pstrName,
 748                                                 wxString *pstrExt) );
 749 #endif
 750
 751 // find a file in a list of directories, returns false if not found
 752 WXDLLIMPEXP_BASE bool wxFindFileInPath(wxString *pStr, const wxString& szPath, const wxString& szFile);
 753
 754 // Get the OS directory if appropriate (such as the Windows directory).
 755 // On non-Windows platform, probably just return the empty string.
 756 WXDLLIMPEXP_BASE wxString wxGetOSDirectory();
 757
 758 #if wxUSE_DATETIME
 759
 760 // Get file modification time
 761 WXDLLIMPEXP_BASE time_t wxFileModificationTime(const wxString& filename);
 762
 763 #endif // wxUSE_DATETIME
 764
 765 // Parses the wildCard, returning the number of filters.
 766 // Returns 0 if none or if there's a problem,
 767 // The arrays will contain an equal number of items found before the error.
 768 // wildCard is in the form:
 769 // "All files (*)|*|Image Files (*.jpeg *.png)|*.jpg;*.png"
 770 WXDLLIMPEXP_BASE int wxParseCommonDialogsFilter(const wxString& wildCard, wxArrayString& descriptions, wxArrayString& filters);
 771
 772 // ----------------------------------------------------------------------------
 773 // classes
 774 // ----------------------------------------------------------------------------
 775
 776 #ifdef __UNIX__
 777
 778 // set umask to the given value in ctor and reset it to the old one in dtor
 779 class WXDLLIMPEXP_BASE wxUmaskChanger
 780 {
 781 public:
 782     // change the umask to the given one if it is not -1: this allows to write
 783     // the same code whether you really want to change umask or not, as is in
 784     // wxFileConfig::Flush() for example
 785     wxUmaskChanger(int umaskNew)
 786     {
 787         m_umaskOld = umaskNew == -1 ? -1 : (int)umask((mode_t)umaskNew);
 788     }
 789
 790     ~wxUmaskChanger()
 791     {
 792         if ( m_umaskOld != -1 )
 793             umask((mode_t)m_umaskOld);
 794     }
 795
 796 private:
 797     int m_umaskOld;
 798 };
 799
 800 // this macro expands to an "anonymous" wxUmaskChanger object under Unix and
 801 // nothing elsewhere
 802 #define wxCHANGE_UMASK(m) wxUmaskChanger wxMAKE_UNIQUE_NAME(umaskChanger_)(m)
 803
 804 #else // !__UNIX__
 805
 806 #define wxCHANGE_UMASK(m)
 807
 808 #endif // __UNIX__/!__UNIX__
 809
 810
 811 // Path searching
 812 class WXDLLIMPEXP_BASE wxPathList : public wxArrayString
 813 {
 814 public:
 815     wxPathList() {}
 816     wxPathList(const wxArrayString &arr)
 817         { Add(arr); }
 818
 819     // Adds all paths in environment variable
 820     void AddEnvList(const wxString& envVariable);
 821
 822     // Adds given path to this list
 823     bool Add(const wxString& path);
 824     void Add(const wxArrayString &paths);
 825
 826     // Find the first full path for which the file exists
 827     wxString FindValidPath(const wxString& filename) const;
 828
 829     // Find the first full path for which the file exists; ensure it's an
 830     // absolute path that gets returned.
 831     wxString FindAbsoluteValidPath(const wxString& filename) const;
 832
 833     // Given full path and filename, add path to list
 834     bool EnsureFileAccessible(const wxString& path);
 835
 836 #if WXWIN_COMPATIBILITY_2_6
 837     // Returns true if the path is in the list
 838     wxDEPRECATED( bool Member(const wxString& path) const );
 839 #endif
 840 };
 841
 842 #endif // _WX_FILEFN_H_