filefn.h

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    // It's a private define, undefine it so nobody gets tempted to use it
    #undef wxHAS_HUGE_FILES
#else // Unix platforms using configure
    typedef off_t wxFileOffset;
    #ifdef _LARGE_FILES
        #define wxFileOffsetFmtSpec wxLongLongFmtSpec
        wxCOMPILE_TIME_ASSERT( sizeof(off_t) == sizeof(wxLongLong_t),
                                BadFileSizeType );
    #else
        #define wxFileOffsetFmtSpec _T("")
    #endif
    // functions
    #define   wxClose      close
    #define   wxRead       ::read
    #define   wxWrite      ::write
    #define   wxLseek      lseek
    #define   wxSeek       lseek
    #define   wxFsync      fsync
    #define   wxEof        eof

    #define   wxMkDir      mkdir
    #define   wxRmDir      rmdir

    #define   wxTell(fd)   lseek(fd, 0, SEEK_CUR)

    #define   wxStructStat struct stat

    #if wxUSE_UNICODE
        #define wxNEED_WX_UNISTD_H
        #if defined(__DMC__)
            typedef unsigned long mode_t;
        #endif
        WXDLLIMPEXP_BASE int wxStat( const wxChar *file_name, wxStructStat *buf );
        WXDLLIMPEXP_BASE int wxAccess( const wxChar *pathname, int mode );
        WXDLLIMPEXP_BASE int wxOpen( const wxChar *pathname, int flags, mode_t mode );
    #else
        #define   wxOpen       open
        #define   wxStat       stat
        #define   wxAccess     access
    #endif
#endif // platforms

#if defined(__VISAGECPP__) && __IBMCPP__ >= 400
//
// VisualAge C++ V4.0 cannot have any external linkage const decs
// in headers included by more than one primary source
//
extern const int wxInvalidOffset;
#else
const int wxInvalidOffset = -1;
#endif

// ----------------------------------------------------------------------------
// functions
// ----------------------------------------------------------------------------
WXDLLIMPEXP_BASE bool wxFileExists(const wxString& filename);

// does the path exist? (may have or not '/' or '\\' at the end)
WXDLLIMPEXP_BASE bool wxDirExists(const wxChar *pszPathName);

WXDLLIMPEXP_BASE bool wxIsAbsolutePath(const wxString& filename);

// Get filename
WXDLLIMPEXP_BASE wxChar* wxFileNameFromPath(wxChar *path);
WXDLLIMPEXP_BASE wxString wxFileNameFromPath(const wxString& path);

// Get directory
WXDLLIMPEXP_BASE wxString wxPathOnly(const wxString& path);

// wxString version
WXDLLIMPEXP_BASE wxString wxRealPath(const wxString& path);

WXDLLIMPEXP_BASE void wxDos2UnixFilename(wxChar *s);

WXDLLIMPEXP_BASE void wxUnix2DosFilename(wxChar *s);

// Strip the extension, in situ
WXDLLIMPEXP_BASE void wxStripExtension(wxChar *buffer);
WXDLLIMPEXP_BASE void wxStripExtension(wxString& buffer);

// Get a temporary filename
WXDLLIMPEXP_BASE wxChar* wxGetTempFileName(const wxString& prefix, wxChar *buf = (wxChar *) NULL);
WXDLLIMPEXP_BASE bool wxGetTempFileName(const wxString& prefix, wxString& buf);

// Expand file name (~/ and ${OPENWINHOME}/ stuff)
WXDLLIMPEXP_BASE wxChar* wxExpandPath(wxChar *dest, const wxChar *path);
WXDLLIMPEXP_BASE bool wxExpandPath(wxString& dest, const wxChar *path);

// Contract w.r.t environment (</usr/openwin/lib, OPENWHOME> -> ${OPENWINHOME}/lib)
// and make (if under the home tree) relative to home
// [caller must copy-- volatile]
WXDLLIMPEXP_BASE wxChar* wxContractPath(const wxString& filename,
                                   const wxString& envname = wxEmptyString,
                                   const wxString& user = wxEmptyString);

// Destructive removal of /./ and /../ stuff
WXDLLIMPEXP_BASE wxChar* wxRealPath(wxChar *path);

// Allocate a copy of the full absolute path
WXDLLIMPEXP_BASE wxChar* wxCopyAbsolutePath(const wxString& path);

// Get first file name matching given wild card.
// Flags are reserved for future use.
#define wxFILE  1
#define wxDIR   2
WXDLLIMPEXP_BASE wxString wxFindFirstFile(const wxChar *spec, int flags = wxFILE);
WXDLLIMPEXP_BASE wxString wxFindNextFile();

// Does the pattern contain wildcards?
WXDLLIMPEXP_BASE bool wxIsWild(const wxString& pattern);

// Does the pattern match the text (usually a filename)?
// If dot_special is true, doesn't match * against . (eliminating
// `hidden' dot files)
WXDLLIMPEXP_BASE bool wxMatchWild(const wxString& pattern,  const wxString& text, bool dot_special = true);

// Concatenate two files to form third
WXDLLIMPEXP_BASE bool wxConcatFiles(const wxString& file1, const wxString& file2, const wxString& file3);

// Copy file1 to file2
WXDLLIMPEXP_BASE bool wxCopyFile(const wxString& file1, const wxString& file2,
                                 bool overwrite = true);

// Remove file
WXDLLIMPEXP_BASE bool wxRemoveFile(const wxString& file);

// Rename file
WXDLLIMPEXP_BASE bool wxRenameFile(const wxString& file1, const wxString& file2);

// Get current working directory.
// If buf is NULL, allocates space using new, else
// copies into buf.
// IMPORTANT NOTE getcwd is know not to work under some releases
// of Win32s 1.3, according to MS release notes!
WXDLLIMPEXP_BASE wxChar* wxGetWorkingDirectory(wxChar *buf = (wxChar *) NULL, int sz = 1000);
// new and preferred version of wxGetWorkingDirectory
// NB: can't have the same name because of overloading ambiguity
WXDLLIMPEXP_BASE wxString wxGetCwd();

// Set working directory
WXDLLIMPEXP_BASE bool wxSetWorkingDirectory(const wxString& d);

// Make directory
WXDLLIMPEXP_BASE bool wxMkdir(const wxString& dir, int perm = 0777);

// Remove directory. Flags reserved for future use.
WXDLLIMPEXP_BASE bool wxRmdir(const wxString& dir, int flags = 0);

// Return the type of an open file
WXDLLIMPEXP_BASE wxFileKind wxGetFileKind(int fd);
WXDLLIMPEXP_BASE wxFileKind wxGetFileKind(FILE *fp);

// compatibility defines, don't use in new code
// consider removal droping 2.4 compatibility
// #if WXWIN_COMPATIBILITY_2_4
wxDEPRECATED( inline bool wxPathExists(const wxChar *pszPathName) );
inline bool wxPathExists(const wxChar *pszPathName)
{
    return wxDirExists(pszPathName);
}
// #endif //WXWIN_COMPATIBILITY_2_4

// ----------------------------------------------------------------------------
// separators in file names
// ----------------------------------------------------------------------------

// between file name and extension
#define wxFILE_SEP_EXT        wxT('.')

// between drive/volume name and the path
#define wxFILE_SEP_DSK        wxT(':')

// between the path components
#define wxFILE_SEP_PATH_DOS   wxT('\\')
#define wxFILE_SEP_PATH_UNIX  wxT('/')
#define wxFILE_SEP_PATH_MAC   wxT(':')
#define wxFILE_SEP_PATH_VMS   wxT('.') // VMS also uses '[' and ']'

// separator in the path list (as in PATH environment variable)
// there is no PATH variable in Classic Mac OS so just use the
// semicolon (it must be different from the file name separator)
// NB: these are strings and not characters on purpose!
#define wxPATH_SEP_DOS        wxT(";")
#define wxPATH_SEP_UNIX       wxT(":")
#define wxPATH_SEP_MAC        wxT(";")

// platform independent versions
#if defined(__UNIX__) && !defined(__OS2__)
  // CYGWIN also uses UNIX settings
  #define wxFILE_SEP_PATH     wxFILE_SEP_PATH_UNIX
  #define wxPATH_SEP          wxPATH_SEP_UNIX
#elif defined(__MAC__)
  #define wxFILE_SEP_PATH     wxFILE_SEP_PATH_MAC
  #define wxPATH_SEP          wxPATH_SEP_MAC
#else   // Windows and OS/2
  #define wxFILE_SEP_PATH     wxFILE_SEP_PATH_DOS
  #define wxPATH_SEP          wxPATH_SEP_DOS
#endif  // Unix/Windows

// this is useful for wxString::IsSameAs(): to compare two file names use
// filename1.IsSameAs(filename2, wxARE_FILENAMES_CASE_SENSITIVE)
#if defined(__UNIX__) && !defined(__DARWIN__) && !defined(__OS2__)
  #define wxARE_FILENAMES_CASE_SENSITIVE  true
#else   // Windows, Mac OS and OS/2
  #define wxARE_FILENAMES_CASE_SENSITIVE  false
#endif  // Unix/Windows

// is the char a path separator?
inline bool wxIsPathSeparator(wxChar c)
{
    // under DOS/Windows we should understand both Unix and DOS file separators
#if ( defined(__UNIX__) && !defined(__OS2__) )|| defined(__MAC__)
    return c == wxFILE_SEP_PATH;
#else
    return c == wxFILE_SEP_PATH_DOS || c == wxFILE_SEP_PATH_UNIX;
#endif
}

// does the string ends with path separator?
WXDLLIMPEXP_BASE bool wxEndsWithPathSeparator(const wxChar *pszFileName);

// split the full path into path (including drive for DOS), name and extension
// (understands both '/' and '\\')
WXDLLIMPEXP_BASE void wxSplitPath(const wxChar *pszFileName,
                             wxString *pstrPath,
                             wxString *pstrName,
                             wxString *pstrExt);

// find a file in a list of directories, returns false if not found
WXDLLIMPEXP_BASE bool wxFindFileInPath(wxString *pStr, const wxChar *pszPath, const wxChar *pszFile);

// Get the OS directory if appropriate (such as the Windows directory).
// On non-Windows platform, probably just return the empty string.
WXDLLIMPEXP_BASE wxString wxGetOSDirectory();

// Get file modification time
WXDLLIMPEXP_BASE time_t wxFileModificationTime(const wxString& filename);

// Parses the wildCard, returning the number of filters.
// Returns 0 if none or if there's a problem,
// The arrays will contain an equal number of items found before the error.
// wildCard is in the form:
// "All files (*)|*|Image Files (*.jpeg *.png)|*.jpg;*.png"
WXDLLIMPEXP_BASE int wxParseCommonDialogsFilter(const wxString& wildCard, wxArrayString& descriptions, wxArrayString& filters);

// ----------------------------------------------------------------------------
// classes
// ----------------------------------------------------------------------------

#ifdef __UNIX__

// set umask to the given value in ctor and reset it to the old one in dtor
class WXDLLIMPEXP_BASE wxUmaskChanger
{
public:
    // change the umask to the given one if it is not -1: this allows to write
    // the same code whether you really want to change umask or not, as is in
    // wxFileConfig::Flush() for example
    wxUmaskChanger(int umaskNew)
    {
        m_umaskOld = umaskNew == -1 ? -1 : (int)umask((mode_t)umaskNew);
    }

    ~wxUmaskChanger()
    {
        if ( m_umaskOld != -1 )
            umask((mode_t)m_umaskOld);
    }

private:
    int m_umaskOld;
};

// this macro expands to an "anonymous" wxUmaskChanger object under Unix and
// nothing elsewhere
#define wxCHANGE_UMASK(m) wxUmaskChanger wxMAKE_UNIQUE_NAME(umaskChanger_)(m)

#else // !__UNIX__

#define wxCHANGE_UMASK(m)

#endif // __UNIX__/!__UNIX__


// Path searching
class WXDLLIMPEXP_BASE wxPathList : public wxStringList
{
public:
    // avoid GCC warning about virtual functions w/o virtual dtor
    virtual ~wxPathList() {}

    // Adds all paths in environment variable
    void AddEnvList(const wxString& envVariable);

    void Add(const wxString& path);
    // Find the first full path for which the file exists
    wxString FindValidPath(const wxString& filename);
    // Find the first full path for which the file exists; ensure it's an
    // absolute path that gets returned.
    wxString FindAbsoluteValidPath(const wxString& filename);
    // Given full path and filename, add path to list
    void EnsureFileAccessible(const wxString& path);
    // Returns true if the path is in the list
    bool Member(const wxString& path);

private:
    // DECLARE_DYNAMIC_CLASS(wxPathList)
};

#endif
  // _WX_FILEFN_H_