filefn.h

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/////////////////////////////////////////////////////////////////////////////
// Name:        filefn.h
// Purpose:     File- and directory-related functions
// Author:      Julian Smart
// Modified by:
// Created:     29/01/98
// RCS-ID:      $Id: filefn.h,v 1.127.2.1 2006/01/11 13:21:18 ABX Exp $
// Copyright:   (c) 1998 Julian Smart
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifndef   _FILEFN_H_
#define   _FILEFN_H_

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
    #pragma interface "filefn.h"
#endif

#include "wx/list.h"
#include "wx/arrstr.h"

#ifdef __WXWINCE__
    #include "wx/msw/wince/time.h"
    #include "wx/msw/private.h"
#else
    #include <time.h>
#endif

#ifdef __WXWINCE__
// Nothing
#elif !defined(__MWERKS__)
    #include <sys/types.h>
    #include <sys/stat.h>
#else
    #ifdef __MACH__
        #include <sys/types.h>
        #include <utime.h>
        #include <sys/stat.h>
        #include <unistd.h>
    #else
        #include <stat.h>
        #include <unistd.h>
        #include <unix.h>
    #endif
#endif

#ifdef __OS2__
// need to check for __OS2__ first since currently both
// __OS2__ and __UNIX__ are defined.
    #include <process.h>
    #include "wx/os2/private.h"
    #ifdef __WATCOMC__
        #include <direct.h>
    #endif
    #include <io.h>
    #ifdef __EMX__
        #include <unistd.h>
    #endif
#elif defined(__UNIX__)
    #include <unistd.h>
    #include <dirent.h>
#endif

#if defined(__WINDOWS__) && !defined(__WXMICROWIN__)
#if !defined( __GNUWIN32__ ) && !defined( __MWERKS__ ) && !defined(__SALFORDC__) && !defined(__WXWINCE__) && !defined(__CYGWIN__)
    #include <direct.h>
    #include <dos.h>
    #include <io.h>
#endif // __WINDOWS__
#endif // native Win compiler

#if defined(__DOS__)
    #ifdef __WATCOMC__
        #include <direct.h>
        #include <dos.h>
        #include <io.h>
    #endif
    #ifdef __DJGPP__
        #include <io.h>
        #include <unistd.h>
    #endif
#endif

#ifdef __BORLANDC__ // Please someone tell me which version of Borland needs
                    // this (3.1 I believe) and how to test for it.
                    // If this works for Borland 4.0 as well, then no worries.
    #include <dir.h>
#endif

#ifdef __SALFORDC__
    #include <dir.h>
    #include <unix.h>
#endif

#ifndef __WXWINCE__
    #include  <fcntl.h>       // O_RDONLY &c
#endif
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------

#ifdef __WXWINCE__
    typedef long off_t;
#else
    // define off_t
    #if !defined(__WXMAC__) || defined(__UNIX__) || defined(__MACH__)
        #include  <sys/types.h>
    #else
        typedef long off_t;
    #endif
#endif

#if (defined(__VISUALC__) && !defined(__WXWINCE__)) || ( defined(__MWERKS__) && defined( __INTEL__) )
    typedef _off_t off_t;
#elif defined(__SYMANTEC__)
    typedef long off_t;
#elif defined(__MWERKS__) && !defined(__INTEL__) && !defined(__MACH__)
    typedef long off_t;
#endif

enum wxSeekMode
{
  wxFromStart,
  wxFromCurrent,
  wxFromEnd
};

enum wxFileKind
{
  wxFILE_KIND_UNKNOWN,
  wxFILE_KIND_DISK,     // a file supporting seeking to arbitrary offsets
  wxFILE_KIND_TERMINAL, // a tty
  wxFILE_KIND_PIPE      // a pipe
};

// ----------------------------------------------------------------------------
// declare our versions of low level file functions: some compilers prepend
// underscores to the usual names, some also have Unicode versions of them
// ----------------------------------------------------------------------------

// Wrappers around Win32 api functions like CreateFile, ReadFile and such
// Implemented in filefnwce.cpp
#if defined( __WXWINCE__)
    typedef __int64 wxFileOffset;
    #define wxFileOffsetFmtSpec _("I64")
    int wxOpen(const wxChar *filename, int oflag, int WXUNUSED(pmode));
    int wxAccess(const wxChar *name, int WXUNUSED(how));
    int wxClose(int fd);
    int wxFsync(int WXUNUSED(fd));
    int wxRead(int fd, void *buf, unsigned int count);
    int wxWrite(int fd, const void *buf, unsigned int count);
    int wxEof(int fd);
    wxFileOffset wxSeek(int fd, wxFileOffset offset, int origin);
    #define wxLSeek wxSeek
    wxFileOffset wxTell(int fd);

    // always Unicode under WinCE
    #define   wxMkDir      _wmkdir
    #define   wxRmDir      _wrmdir
    #define   wxStat       _wstat
    #define   wxStructStat struct _stat

// Microsoft compiler loves underscores, feed them to it
#elif defined( __VISUALC__ ) \
    || ( defined(__MINGW32__) && !defined(__WINE__) && wxCHECK_W32API_VERSION( 0, 5 ) ) \
    || ( defined(__MWERKS__) && defined(__WXMSW__) ) \
    || ( defined(__DMC__) && defined(__WXMSW__) ) \
    || ( defined(__WATCOMC__) && defined(__WXMSW__) )

    // detect compilers which have support for huge files (currently only
    // Digital Mars doesn't)
    #ifndef __WXPALMOS__
    #include "wx/msw/private.h"
    #endif

    #undef wxHAS_HUGE_FILES
    #if defined(__MINGW32__)
        #define wxHAS_HUGE_FILES 1
    #elif defined(__MWERKS__)
        #define wxHAS_HUGE_FILES 0
    #elif defined(__DMC__)
        #define wxHAS_HUGE_FILES 0
    #elif ((_INTEGRAL_MAX_BITS >= 64) || defined(_LARGE_FILES))
        #define wxHAS_HUGE_FILES 1
    #else
        #define wxHAS_HUGE_FILES 0
    #endif

    // functions
    #if defined(__BORLANDC__) || defined(__WATCOMC__)
        #define   _tell        tell
    #endif

    #if wxHAS_HUGE_FILES
        typedef wxLongLong_t wxFileOffset;
        #define wxFileOffsetFmtSpec wxLongLongFmtSpec
    #else
        typedef off_t wxFileOffset;
    #endif

    #define   wxClose      _close

    #if defined(__MWERKS__)
        #if __MSL__ >= 0x6000
            #define wxRead(fd, buf, nCount)  _read(fd, (void *)buf, nCount)
            #define wxWrite(fd, buf, nCount) _write(fd, (void *)buf, nCount)
        #else
            #define wxRead(fd, buf, nCount)\
                  _read(fd, (const char *)buf, nCount)
            #define wxWrite(fd, buf, nCount)\
                  _write(fd, (const char *)buf, nCount)
        #endif
    #else
        #if defined(__DMC__) || defined(__WATCOMC__)
            #define wxRead        ::read
            #define wxWrite       ::write
        #else
            #define wxRead        _read
            #define wxWrite        _write
        #endif
    #endif
    #if wxHAS_HUGE_FILES
        #define   wxSeek      _lseeki64
        #define   wxLseek      _lseeki64
        #define   wxTell       _telli64
    #else
        #define   wxSeek      _lseek
        #define   wxLseek      _lseek
        #define   wxTell       _tell
    #endif
    #define   wxFsync      _commit
    #if defined(__WATCOMC__)
        #define   wxEof        ::eof
    #else
        #define   wxEof        _eof
    #endif

    #if wxUSE_UNICODE
        #if wxUSE_UNICODE_MSLU
            #define   wxOpen       wxMSLU__wopen

            #define   wxAccess     wxMSLU__waccess
            #define   wxMkDir      wxMSLU__wmkdir
            #define   wxRmDir      wxMSLU__wrmdir
            #if wxHAS_HUGE_FILES
                #define   wxStat       wxMSLU__wstati64
            #else
                #define   wxStat       wxMSLU__wstat
            #endif
        #else
            #define   wxOpen       _wopen
            #define   wxAccess     _waccess
            #define   wxMkDir      _wmkdir
            #define   wxRmDir      _wrmdir
            #if wxHAS_HUGE_FILES
                #define   wxStat       _wstati64
            #else
                #define   wxStat       _wstat
            #endif
        #endif
    #else // !wxUSE_UNICODE
        #ifdef __BORLANDC__
            #define   wxOpen       open
        #else
            #define   wxOpen       _open
        #endif
        #define   wxAccess     _access
        #define   wxMkDir      _mkdir
        #ifdef __WATCOMC__
            #define   wxRmDir      rmdir
        #else
            #define   wxRmDir      _rmdir
        #endif
        #if wxHAS_HUGE_FILES
            #define   wxStat       _stati64
        #else
            #define   wxStat       _stat
        #endif
    #endif

    // Types: Notice that Watcom is the only compiler to have a wide char
    // version of struct stat as well as a wide char stat function variant.
    // This was droped since OW 1.4 "for consistency across platforms".
    #if wxHAS_HUGE_FILES
        #if wxUSE_UNICODE && wxONLY_WATCOM_EARLIER_THAN(1,4)
            #define   wxStructStat struct _wstati64
        #else
            #define   wxStructStat struct _stati64
        #endif
    #else
        #if wxUSE_UNICODE && wxONLY_WATCOM_EARLIER_THAN(1,4)
            #define   wxStructStat struct _wstat
        #else
            #define   wxStructStat struct _stat
        #endif
    #endif

    // constants (unless already defined by the user code)
    #if !defined(__BORLANDC__) && !defined(__WATCOMC__) && !defined(__WXPALMOS__)
        #ifndef O_RDONLY
            #define   O_RDONLY    _O_RDONLY
            #define   O_WRONLY    _O_WRONLY
            #define   O_RDWR      _O_RDWR
            #define   O_EXCL      _O_EXCL
            #define   O_CREAT     _O_CREAT
            #define   O_BINARY    _O_BINARY
        #endif

        #ifndef S_IFMT
            #define   S_IFMT      _S_IFMT
            #define   S_IFDIR     _S_IFDIR
            #define   S_IFREG     _S_IFREG
        #endif
    #endif