Add const to GetTargetSize()

[wxWidgets.git] / include / wx / filename.h

diff --git a/include/wx/filename.h b/include/wx/filename.h
index cf12b36501ea056dd90a0d9151467b08cf52be4a..5154ed057e2ee248d852f9be1bd36944fdb05921 100644 (file)
--- a/include/wx/filename.h
+++ b/include/wx/filename.h
@@ -6,20 +6,12 @@
 // Created:     28.12.00
 // RCS-ID:      $Id$
 // Copyright:   (c) 2000 Robert Roebling
 // Created:     28.12.00
 // RCS-ID:      $Id$
 // Copyright:   (c) 2000 Robert Roebling

-// Licence:     wxWindows license
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 #ifndef   _WX_FILENAME_H_
 #define   _WX_FILENAME_H_
 
 /////////////////////////////////////////////////////////////////////////////
 
 #ifndef   _WX_FILENAME_H_
 #define   _WX_FILENAME_H_
 

-#ifdef __GNUG__
-    #pragma interface "filename.h"
-#endif
-
-#ifndef WX_PRECOMP
-    #include  "wx/string.h"
-#endif
-

 /*
     TODO:
 
 /*
     TODO:
 


@@ -27,16 +19,20 @@
     2. more file operations:
         a) chmod()
         b) [acm]time() - get and set
     2. more file operations:
         a) chmod()
         b) [acm]time() - get and set

-        c) file size
-        d) file permissions with readable accessors for most common bits
+        c) file permissions with readable accessors for most common bits

            such as IsReadable() &c
            such as IsReadable() &c

-        e) rename()?
+        d) rename()?

     3. SameFileAs() function to compare inodes under Unix
  */
 
     3. SameFileAs() function to compare inodes under Unix
  */
 

-// ridiculously enough, this will replace DirExists with wxDirExists etc
+#include "wx/arrstr.h"

 #include "wx/filefn.h"
 #include "wx/datetime.h"
 #include "wx/filefn.h"
 #include "wx/datetime.h"

+#include "wx/intl.h"
+
+#if wxUSE_FILE
+class WXDLLIMPEXP_BASE wxFile;
+#endif

 
 // ----------------------------------------------------------------------------
 // constants
 
 // ----------------------------------------------------------------------------
 // constants


@@ -49,13 +45,14 @@ enum wxPathFormat
 {
     wxPATH_NATIVE = 0,      // the path format for the current platform
     wxPATH_UNIX,
 {
     wxPATH_NATIVE = 0,      // the path format for the current platform
     wxPATH_UNIX,

+    wxPATH_BEOS = wxPATH_UNIX,

     wxPATH_MAC,
     wxPATH_DOS,
     wxPATH_MAC,
     wxPATH_DOS,

+    wxPATH_WIN = wxPATH_DOS,
+    wxPATH_OS2 = wxPATH_DOS,

     wxPATH_VMS,
 
     wxPATH_VMS,
 

-    wxPATH_BEOS = wxPATH_UNIX,
-    wxPATH_WIN = wxPATH_DOS,
-    wxPATH_OS2 = wxPATH_DOS
+    wxPATH_MAX // Not a valid value for specifying path format

 };
 
 // the kind of normalization to do with the file name: these values can be
 };
 
 // the kind of normalization to do with the file name: these values can be


@@ -68,21 +65,39 @@ enum wxPathNormalize
     wxPATH_NORM_CASE     = 0x0008,  // if case insensitive => tolower
     wxPATH_NORM_ABSOLUTE = 0x0010,  // make the path absolute
     wxPATH_NORM_LONG =     0x0020,  // make the path the long form
     wxPATH_NORM_CASE     = 0x0008,  // if case insensitive => tolower
     wxPATH_NORM_ABSOLUTE = 0x0010,  // make the path absolute
     wxPATH_NORM_LONG =     0x0020,  // make the path the long form

-    wxPATH_NORM_ALL      = 0x003f
+    wxPATH_NORM_SHORTCUT = 0x0040,  // resolve the shortcut, if it is a shortcut
+    wxPATH_NORM_ALL      = 0x00ff & ~wxPATH_NORM_CASE

 };
 
 };
 

+// what exactly should GetPath() return?
+enum
+{
+    wxPATH_GET_VOLUME    = 0x0001,  // include the volume if applicable
+    wxPATH_GET_SEPARATOR = 0x0002   // terminate the path with the separator
+};
+
+// MkDir flags
+enum
+{
+    wxPATH_MKDIR_FULL    = 0x0001   // create directories recursively
+};
+
+// error code of wxFileName::GetSize()
+extern wxULongLong wxInvalidSize;
+
+

 // ----------------------------------------------------------------------------
 // wxFileName: encapsulates a file path
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 // wxFileName: encapsulates a file path
 // ----------------------------------------------------------------------------
 

-class WXDLLEXPORT wxFileName
+class WXDLLIMPEXP_BASE wxFileName

 {
 public:
     // constructors and assignment
 
         // the usual stuff
 {
 public:
     // constructors and assignment
 
         // the usual stuff

-    wxFileName() { }
-    wxFileName( const wxFileName &filepath ) { Assign(filepath); }
+    wxFileName() { Clear(); }
+    wxFileName(const wxFileName& filepath) { Assign(filepath); }

 
         // from a full filename: if it terminates with a '/', a directory path
         // is contructed (the name will be empty), otherwise a file name and
 
         // from a full filename: if it terminates with a '/', a directory path
         // is contructed (the name will be empty), otherwise a file name and


@@ -96,6 +111,14 @@ public:
                wxPathFormat format = wxPATH_NATIVE)
         { Assign(path, name, format); }
 
                wxPathFormat format = wxPATH_NATIVE)
         { Assign(path, name, format); }
 

+        // from a volume, directory name, file base name and extension
+    wxFileName(const wxString& volume,
+               const wxString& path,
+               const wxString& name,
+               const wxString& ext,
+               wxPathFormat format = wxPATH_NATIVE)
+        { Assign(volume, path, name, ext, format); }
+

         // from a directory name, file base name and extension
     wxFileName(const wxString& path,
                const wxString& name,
         // from a directory name, file base name and extension
     wxFileName(const wxString& path,
                const wxString& name,


@@ -105,21 +128,35 @@ public:
 
         // the same for delayed initialization
 
 
         // the same for delayed initialization
 

-        // VZ: wouldn't it be better to call this Create() for consistency with
-        //     all GUI classes? Personally, I like Set() more than Assign() too
-

     void Assign(const wxFileName& filepath);
     void Assign(const wxFileName& filepath);

+

     void Assign(const wxString& fullpath,
                 wxPathFormat format = wxPATH_NATIVE);
     void Assign(const wxString& fullpath,
                 wxPathFormat format = wxPATH_NATIVE);

+
+    void Assign(const wxString& volume,
+                const wxString& path,
+                const wxString& name,
+                const wxString& ext,
+                bool hasExt,
+                wxPathFormat format = wxPATH_NATIVE);
+
+    void Assign(const wxString& volume,
+                const wxString& path,
+                const wxString& name,
+                const wxString& ext,
+                wxPathFormat format = wxPATH_NATIVE)
+        { Assign(volume, path, name, ext, !ext.empty(), format); }
+

     void Assign(const wxString& path,
                 const wxString& name,
                 wxPathFormat format = wxPATH_NATIVE);
     void Assign(const wxString& path,
                 const wxString& name,
                 wxPathFormat format = wxPATH_NATIVE);

+

     void Assign(const wxString& path,
                 const wxString& name,
                 const wxString& ext,
                 wxPathFormat format = wxPATH_NATIVE);
     void Assign(const wxString& path,
                 const wxString& name,
                 const wxString& ext,
                 wxPathFormat format = wxPATH_NATIVE);

-    void AssignDir(const wxString& dir, wxPathFormat format = wxPATH_NATIVE)
-        { Assign(dir, _T(""), format); }
+
+    void AssignDir(const wxString& dir, wxPathFormat format = wxPATH_NATIVE);

 
         // assorted assignment operators
 
 
         // assorted assignment operators
 


@@ -133,40 +170,47 @@ public:
     void Clear();
 
         // static pseudo constructors
     void Clear();
 
         // static pseudo constructors

-    static wxFileName FileName(const wxString& file);
-    static wxFileName DirName(const wxString& dir);
+    static wxFileName FileName(const wxString& file,
+                               wxPathFormat format = wxPATH_NATIVE);
+    static wxFileName DirName(const wxString& dir,
+                              wxPathFormat format = wxPATH_NATIVE);

 
     // file tests
 
         // is the filename valid at all?
 
     // file tests
 
         // is the filename valid at all?

-    bool IsOk() const { return !m_dirs.IsEmpty() || !m_name.IsEmpty(); }
+    bool IsOk() const
+    {
+        // we're fine if we have the path or the name or if we're a root dir
+        return m_dirs.size() != 0 || !m_name.empty() || !m_relative ||
+                !m_ext.empty() || m_hasExt;
+    }

 
         // does the file with this name exists?
 
         // does the file with this name exists?

-    bool FileExists();
+    bool FileExists() const;

     static bool FileExists( const wxString &file );
 
         // does the directory with this name exists?
     static bool FileExists( const wxString &file );
 
         // does the directory with this name exists?

-    bool DirExists();
+    bool DirExists() const;

     static bool DirExists( const wxString &dir );
 
         // VZ: also need: IsDirWritable(), IsFileExecutable() &c (TODO)
 
     // time functions
     static bool DirExists( const wxString &dir );
 
         // VZ: also need: IsDirWritable(), IsFileExecutable() &c (TODO)
 
     // time functions

-
-        // set the file creation and last access/mod times
+#if wxUSE_DATETIME
+        // set the file last access/mod and creation times

         // (any of the pointers may be NULL)
         // (any of the pointers may be NULL)

-    bool SetTimes(const wxDateTime *dtCreate,
-                  const wxDateTime *dtAccess,
-                  const wxDateTime *dtMod);
+    bool SetTimes(const wxDateTime *dtAccess,
+                  const wxDateTime *dtMod,
+                  const wxDateTime *dtCreate);

 
         // set the access and modification times to the current moment
     bool Touch();
 
 
         // set the access and modification times to the current moment
     bool Touch();
 

-        // return the last access, last modification and last change times
+        // return the last access, last modification and create times

         // (any of the pointers may be NULL)
     bool GetTimes(wxDateTime *dtAccess,
                   wxDateTime *dtMod,
         // (any of the pointers may be NULL)
     bool GetTimes(wxDateTime *dtAccess,
                   wxDateTime *dtMod,

-                  wxDateTime *dtChange) const;
+                  wxDateTime *dtCreate) const;

 
         // convenience wrapper: get just the last mod time of the file
     wxDateTime GetModificationTime() const
 
         // convenience wrapper: get just the last mod time of the file
     wxDateTime GetModificationTime() const


@@ -175,12 +219,24 @@ public:
         (void)GetTimes(NULL, &dtMod, NULL);
         return dtMod;
     }
         (void)GetTimes(NULL, &dtMod, NULL);
         return dtMod;
     }

+#endif // wxUSE_DATETIME
+
+#ifdef __WXMAC__
+    bool MacSetTypeAndCreator( wxUint32 type , wxUint32 creator ) ;
+    bool MacGetTypeAndCreator( wxUint32 *type , wxUint32 *creator ) ;
+    // gets the 'common' type and creator for a certain extension
+    static bool MacFindDefaultTypeAndCreator( const wxString& ext , wxUint32 *type , wxUint32 *creator ) ;
+    // registers application defined extensions and their default type and creator
+    static void MacRegisterDefaultTypeAndCreator( const wxString& ext , wxUint32 type , wxUint32 creator ) ;
+    // looks up the appropriate type and creator from the registration and then sets
+    bool MacSetDefaultTypeAndCreator() ;
+#endif

 
     // various file/dir operations
 
         // retrieve the value of the current working directory
 
     // various file/dir operations
 
         // retrieve the value of the current working directory

-    void AssignCwd();
-    static wxString GetCwd();
+    void AssignCwd(const wxString& volume = wxEmptyString);
+    static wxString GetCwd(const wxString& volume = wxEmptyString);

 
         // change the current working directory
     bool SetCwd();
 
         // change the current working directory
     bool SetCwd();


@@ -190,13 +246,18 @@ public:
     void AssignHomeDir();
     static wxString GetHomeDir();
 
     void AssignHomeDir();
     static wxString GetHomeDir();
 

-        // get a temp file name starting with thespecified prefix
-    void AssignTempFileName( const wxString &prefix );
+#if wxUSE_FILE
+        // get a temp file name starting with the specified prefix and open the
+        // file passed to us using this name for writing (atomically if
+        // possible)
+    void AssignTempFileName(const wxString& prefix, wxFile *fileTemp = NULL);
+    static wxString CreateTempFileName(const wxString& prefix,
+                                       wxFile *fileTemp = NULL);
+#endif // wxUSE_FILE

 
     // directory creation and removal.
 
     // directory creation and removal.

-    // if full is TRUE, will try to make each directory in the path.
-    bool Mkdir( int perm = 0777, bool full = FALSE);
-    static bool Mkdir( const wxString &dir, int perm = 0777, bool full = FALSE );
+    bool Mkdir( int perm = 0777, int flags = 0);
+    static bool Mkdir( const wxString &dir, int perm = 0777, int flags = 0 );

 
     bool Rmdir();
     static bool Rmdir( const wxString &dir );
 
     bool Rmdir();
     static bool Rmdir( const wxString &dir );


@@ -208,64 +269,125 @@ public:
         // variables will be expanded in it
         //
         // this may be done using another (than current) value of cwd
         // variables will be expanded in it
         //
         // this may be done using another (than current) value of cwd

-    bool Normalize(wxPathNormalize flags = wxPATH_NORM_ALL,
+    bool Normalize(int flags = wxPATH_NORM_ALL,

                    const wxString& cwd = wxEmptyString,
                    wxPathFormat format = wxPATH_NATIVE);
 
                    const wxString& cwd = wxEmptyString,
                    wxPathFormat format = wxPATH_NATIVE);
 

+        // get a path path relative to the given base directory, i.e. opposite
+        // of Normalize
+        //
+        // pass an empty string to get a path relative to the working directory
+        //
+        // returns true if the file name was modified, false if we failed to do
+        // anything with it (happens when the file is on a different volume,
+        // for example)
+    bool MakeRelativeTo(const wxString& pathBase = wxEmptyString,
+                        wxPathFormat format = wxPATH_NATIVE);
+
+        // make the path absolute
+        //
+        // this may be done using another (than current) value of cwd
+    bool MakeAbsolute(const wxString& cwd = wxEmptyString,
+                      wxPathFormat format = wxPATH_NATIVE)
+        { return Normalize(wxPATH_NORM_DOTS | wxPATH_NORM_ABSOLUTE |
+                           wxPATH_NORM_TILDE, cwd, format); }
+
+#if defined(__WIN32__) && !defined(__WXWINCE__) && wxUSE_OLE
+        // if the path is a shortcut, return the target and optionally,
+        // the arguments
+    bool GetShortcutTarget(const wxString& shortcutPath,
+                           wxString& targetFilename,
+                           wxString* arguments = NULL);
+#endif
+

     // Comparison
 
     // Comparison
 

-        // compares with the rules of this platform
-    bool SameAs(const wxFileName &filepath,
-                wxPathFormat format = wxPATH_NATIVE);
+        // compares with the rules of the given platforms format
+    bool SameAs(const wxFileName& filepath,
+                wxPathFormat format = wxPATH_NATIVE) const;
+
+        // compare with another filename object
+    bool operator==(const wxFileName& filename) const
+        { return SameAs(filename); }
+    bool operator!=(const wxFileName& filename) const
+        { return !SameAs(filename); }

 
 

-        // uses the current platform settings
-    bool operator==(const wxFileName& filename) { return SameAs(filename); }
-    bool operator==(const wxString& filename)
-        { return *this == wxFileName(filename); }
+        // compare with a filename string interpreted as a native file name
+    bool operator==(const wxString& filename) const
+        { return SameAs(wxFileName(filename)); }
+    bool operator!=(const wxString& filename) const
+        { return !SameAs(wxFileName(filename)); }

 
 

-    // Tests
+        // are the file names of this type cases sensitive?

     static bool IsCaseSensitive( wxPathFormat format = wxPATH_NATIVE );
     static bool IsCaseSensitive( wxPathFormat format = wxPATH_NATIVE );

-    bool IsRelative( wxPathFormat format = wxPATH_NATIVE );
-    bool IsAbsolute( wxPathFormat format = wxPATH_NATIVE );
+
+        // is this filename absolute?
+    bool IsAbsolute(wxPathFormat format = wxPATH_NATIVE) const;
+
+        // is this filename relative?
+    bool IsRelative(wxPathFormat format = wxPATH_NATIVE) const
+        { return !IsAbsolute(format); }
+
+    // Returns the characters that aren't allowed in filenames
+    // on the specified platform.
+    static wxString GetForbiddenChars(wxPathFormat format = wxPATH_NATIVE);
+
+    // Information about path format
+
+    // get the string separating the volume from the path for this format,
+    // return an empty string if this format doesn't support the notion of
+    // volumes at all
+    static wxString GetVolumeSeparator(wxPathFormat format = wxPATH_NATIVE);

 
     // get the string of path separators for this format
     static wxString GetPathSeparators(wxPathFormat format = wxPATH_NATIVE);
 
 
     // get the string of path separators for this format
     static wxString GetPathSeparators(wxPathFormat format = wxPATH_NATIVE);
 

+    // get the string of path terminators, i.e. characters which terminate the
+    // path
+    static wxString GetPathTerminators(wxPathFormat format = wxPATH_NATIVE);
+
+    // get the canonical path separator for this format
+    static wxChar GetPathSeparator(wxPathFormat format = wxPATH_NATIVE)
+        { return GetPathSeparators(format)[0u]; }
+

     // is the char a path separator for this format?
     static bool IsPathSeparator(wxChar ch, wxPathFormat format = wxPATH_NATIVE);
 
     // is the char a path separator for this format?
     static bool IsPathSeparator(wxChar ch, wxPathFormat format = wxPATH_NATIVE);
 

-    // FIXME: what exactly does this do?
-    bool IsWild( wxPathFormat format = wxPATH_NATIVE );
-

     // Dir accessors
     // Dir accessors

-    void AppendDir( const wxString &dir );
-    void PrependDir( const wxString &dir );
-    void InsertDir( int before, const wxString &dir );
-    void RemoveDir( int pos );
-    size_t GetDirCount() const { return m_dirs.GetCount(); }
+    size_t GetDirCount() const { return m_dirs.size(); }
+    void AppendDir(const wxString& dir);
+    void PrependDir(const wxString& dir);
+    void InsertDir(size_t before, const wxString& dir);
+    void RemoveDir(size_t pos);
+    void RemoveLastDir() { RemoveDir(GetDirCount() - 1); }

 
     // Other accessors
 
     // Other accessors

-    void SetExt( const wxString &ext )          { m_ext = ext; }
+    void SetExt( const wxString &ext )          { m_ext = ext; m_hasExt = !m_ext.empty(); }
+    void ClearExt()                             { m_ext = wxEmptyString; m_hasExt = false; }
+    void SetEmptyExt()                          { m_ext = wxT(""); m_hasExt = true; }

     wxString GetExt() const                     { return m_ext; }
     wxString GetExt() const                     { return m_ext; }

-    bool HasExt() const                         { return !m_ext.IsEmpty(); }
+    bool HasExt() const                         { return m_hasExt; }

 
     void SetName( const wxString &name )        { m_name = name; }
     wxString GetName() const                    { return m_name; }
 
     void SetName( const wxString &name )        { m_name = name; }
     wxString GetName() const                    { return m_name; }

-    bool HasName() const                        { return !m_name.IsEmpty(); }
+    bool HasName() const                        { return !m_name.empty(); }
+
+    void SetVolume( const wxString &volume )    { m_volume = volume; }
+    wxString GetVolume() const                  { return m_volume; }
+    bool HasVolume() const                      { return !m_volume.empty(); }

 
     // full name is the file name + extension (but without the path)
     void SetFullName(const wxString& fullname);
     wxString GetFullName() const;
 
 
     // full name is the file name + extension (but without the path)
     void SetFullName(const wxString& fullname);
     wxString GetFullName() const;
 

-    const wxArrayString &GetDirs() const        { return m_dirs; }
+    const wxArrayString& GetDirs() const        { return m_dirs; }

 
 

-    // Construct path only - possibly with the trailing separator
-    wxString GetPath( bool add_separator = FALSE,
-                      wxPathFormat format = wxPATH_NATIVE ) const;
+    // flags are combination of wxPATH_GET_XXX flags
+    wxString GetPath(int flags = wxPATH_GET_VOLUME,
+                     wxPathFormat format = wxPATH_NATIVE) const;

 
 

-    // more readable synonym
-    wxString GetPathWithSep(wxPathFormat format = wxPATH_NATIVE ) const
-        { return GetPath(TRUE /* add separator */, format); }
+    // Replace current path with this one
+    void SetPath( const wxString &path, wxPathFormat format = wxPATH_NATIVE );

 
     // Construct full path with name and ext
     wxString GetFullPath( wxPathFormat format = wxPATH_NATIVE ) const;
 
     // Construct full path with name and ext
     wxString GetFullPath( wxPathFormat format = wxPATH_NATIVE ) const;


@@ -276,26 +398,101 @@ public:
     // Return the long form of the path (returns identity on non-Windows platforms)
     wxString GetLongPath() const;
 
     // Return the long form of the path (returns identity on non-Windows platforms)
     wxString GetLongPath() const;
 

+    // Is this a file or directory (not necessarily an existing one)
+    bool IsDir() const { return m_name.empty() && m_ext.empty(); }
+

     // various helpers
 
         // get the canonical path format for this platform
     static wxPathFormat GetFormat( wxPathFormat format = wxPATH_NATIVE );
 
     // various helpers
 
         // get the canonical path format for this platform
     static wxPathFormat GetFormat( wxPathFormat format = wxPATH_NATIVE );
 

-        // split a fullpath into path, (base) name and ext (all of the pointers
-        // can be NULL)
+        // split a fullpath into the volume, path, (base) name and extension
+        // (all of the pointers can be NULL)

     static void SplitPath(const wxString& fullpath,
     static void SplitPath(const wxString& fullpath,

+                          wxString *volume,

                           wxString *path,
                           wxString *name,
                           wxString *ext,
                           wxString *path,
                           wxString *name,
                           wxString *ext,

+                          bool *hasExt = NULL,

                           wxPathFormat format = wxPATH_NATIVE);
 
                           wxPathFormat format = wxPATH_NATIVE);
 

+    static void SplitPath(const wxString& fullpath,
+                          wxString *volume,
+                          wxString *path,
+                          wxString *name,
+                          wxString *ext,
+                          wxPathFormat format)
+    {
+        SplitPath(fullpath, volume, path, name, ext, NULL, format);
+    }
+
+        // compatibility version: volume is part of path
+    static void SplitPath(const wxString& fullpath,
+                          wxString *path,
+                          wxString *name,
+                          wxString *ext,
+                          wxPathFormat format = wxPATH_NATIVE);
+
+        // split a path into volume and pure path part
+    static void SplitVolume(const wxString& fullpathWithVolume,
+                            wxString *volume,
+                            wxString *path,
+                            wxPathFormat format = wxPATH_NATIVE);
+
+    // Filesize
+
+        // returns the size of the given filename
+    wxULongLong GetSize() const;
+    static wxULongLong GetSize(const wxString &file);
+
+        // returns the size in a human readable form
+    wxString GetHumanReadableSize(const wxString &nullsize = wxGetTranslation(_T("Not available")),
+                                  int precision = 1) const;
+    static wxString GetHumanReadableSize(const wxULongLong &sz,
+                                         const wxString &nullsize = wxGetTranslation(_T("Not available")),
+                                         int precision = 1);
+
+
+    // deprecated methods, don't use any more
+    // --------------------------------------
+
+#ifndef __DIGITALMARS__
+    wxString GetPath( bool withSep, wxPathFormat format = wxPATH_NATIVE ) const
+        { return GetPath(withSep ? wxPATH_GET_SEPARATOR : 0, format); }
+#endif
+    wxString GetPathWithSep(wxPathFormat format = wxPATH_NATIVE ) const
+        { return GetPath(wxPATH_GET_VOLUME | wxPATH_GET_SEPARATOR, format); }
+

 private:
 private:

+    // check whether this dir is valid for Append/Prepend/InsertDir()
+    static bool IsValidDirComponent(const wxString& dir);
+
+    // the drive/volume/device specification (always empty for Unix)
+    wxString        m_volume;
+

     // the path components of the file
     wxArrayString   m_dirs;
 
     // the file name and extension (empty for directories)
     wxString        m_name,
                     m_ext;
     // the path components of the file
     wxArrayString   m_dirs;
 
     // the file name and extension (empty for directories)
     wxString        m_name,
                     m_ext;

+
+    // when m_dirs is empty it may mean either that we have no path at all or
+    // that our path is '/', i.e. the root directory
+    //
+    // we use m_relative to distinguish between these two cases, it will be
+    // true in the former and false in the latter
+    //
+    // NB: the path is not absolute just because m_relative is false, it still
+    //     needs the drive (i.e. volume) in some formats (Windows)
+    bool            m_relative;
+
+    // when m_ext is empty, it may be because we don't have any extension or
+    // because we have an empty extension
+    //
+    // the difference is important as file with name "foo" and without
+    // extension has full name "foo" while with empty extension it is "foo."
+    bool            m_hasExt;

 };
 
 #endif // _WX_FILENAME_H_
 };
 
 #endif // _WX_FILENAME_H_