include/wx/filename.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/filename.h
   3 // Purpose:     wxFileName - encapsulates a file path
   4 // Author:      Robert Roebling, Vadim Zeitlin
   5 // Modified by:
   6 // Created:     28.12.00
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2000 Robert Roebling
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef   _WX_FILENAME_H_
  13 #define   _WX_FILENAME_H_
  14
  15 #ifdef __GNUG__
  16     #pragma interface "filename.h"
  17 #endif
  18
  19 #ifndef WX_PRECOMP
  20     #include  "wx/string.h"
  21 #endif
  22
  23 /*
  24     TODO:
  25
  26     1. support for drives under Windows
  27     2. more file operations:
  28         a) chmod()
  29         b) [acm]time() - get and set
  30         c) file size
  31         d) file permissions with readable accessors for most common bits
  32            such as IsReadable() &c
  33         e) rename()?
  34     3. SameFileAs() function to compare inodes under Unix
  35  */
  36
  37 // ridiculously enough, this will replace DirExists with wxDirExists etc
  38 #include "wx/filefn.h"
  39
  40 // ----------------------------------------------------------------------------
  41 // constants
  42 // ----------------------------------------------------------------------------
  43
  44 // the various values for the path format: this mainly affects the path
  45 // separator but also whether or not the path has the drive part (as under
  46 // Windows)
  47 enum wxPathFormat
  48 {
  49     wxPATH_NATIVE = 0,      // the path format for the current platform
  50     wxPATH_UNIX,
  51     wxPATH_MAC,
  52     wxPATH_DOS,
  53
  54     wxPATH_BEOS = wxPATH_UNIX,
  55     wxPATH_WIN = wxPATH_DOS,
  56     wxPATH_OS2 = wxPATH_DOS
  57 };
  58
  59 // the kind of normalization to do with the file name: these values can be
  60 // or'd together to perform several operations at once
  61 enum wxPathNormalize
  62 {
  63     wxPATH_NORM_ENV_VARS = 0x0001,  // replace env vars with their values
  64     wxPATH_NORM_DOTS     = 0x0002,  // squeeze all .. and . and prepend cwd
  65     wxPATH_NORM_TILDE    = 0x0004,  // Unix only: replace ~ and ~user
  66     wxPATH_NORM_CASE     = 0x0008,  // if case insensitive => tolower
  67     wxPATH_NORM_ABSOLUTE = 0x0010,  // make the path absolute
  68     wxPATH_NORM_LONG =     0x0020,  // make the path the long form
  69     wxPATH_NORM_ALL      = 0x003f
  70 };
  71
  72 // ----------------------------------------------------------------------------
  73 // wxFileName: encapsulates a file path
  74 // ----------------------------------------------------------------------------
  75
  76 class WXDLLEXPORT wxFileName
  77 {
  78 public:
  79     // constructors and assignment
  80
  81         // the usual stuff
  82     wxFileName() { }
  83     wxFileName( const wxFileName &filepath ) { Assign(filepath); }
  84
  85         // from a full filename: if it terminates with a '/', a directory path
  86         // is contructed (the name will be empty), otherwise a file name and
  87         // extension are extracted from it
  88     wxFileName( const wxString& fullpath, wxPathFormat format = wxPATH_NATIVE )
  89         { Assign( fullpath, format ); }
  90
  91         // from a directory name and a file name
  92     wxFileName(const wxString& path,
  93                const wxString& name,
  94                wxPathFormat format = wxPATH_NATIVE)
  95         { Assign(path, name, format); }
  96
  97         // from a directory name, file base name and extension
  98     wxFileName(const wxString& path,
  99                const wxString& name,
 100                const wxString& ext,
 101                wxPathFormat format = wxPATH_NATIVE)
 102         { Assign(path, name, ext, format); }
 103
 104         // assorted assignment operators
 105
 106     wxFileName& operator=(const wxFileName& filename)
 107         { Assign(filename); return *this; }
 108
 109     wxFileName& operator=(const wxString& filename)
 110         { Assign(filename); return *this; }
 111
 112         // the same for delayed initialization
 113
 114         // VZ: wouldn't it be better to call this Create() for consistency with
 115         //     all GUI classes? Personally, I like Set() more than Assign() too
 116
 117     void Assign(const wxFileName& filepath);
 118     void Assign(const wxString& fullpath,
 119                 wxPathFormat format = wxPATH_NATIVE);
 120     void Assign(const wxString& path,
 121                 const wxString& name,
 122                 wxPathFormat format = wxPATH_NATIVE);
 123     void Assign(const wxString& path,
 124                 const wxString& name,
 125                 const wxString& ext,
 126                 wxPathFormat format = wxPATH_NATIVE);
 127     void AssignDir(const wxString& dir, wxPathFormat format = wxPATH_NATIVE)
 128         { Assign(dir, _T(""), format); }
 129
 130         // reset all components to default, uninitialized state
 131     void Clear();
 132
 133         // static pseudo constructors
 134     static wxFileName FileName(const wxString& file);
 135     static wxFileName DirName(const wxString& dir);
 136
 137     // test for existence
 138
 139         // is the filename valid at all?
 140     bool IsOk() const { return !m_dirs.IsEmpty() || !m_name.IsEmpty(); }
 141
 142         // does the file with this name exists?
 143     bool FileExists();
 144     static bool FileExists( const wxString &file );
 145
 146         // does the directory with this name exists?
 147     bool DirExists();
 148     static bool DirExists( const wxString &dir );
 149
 150         // VZ: also need: IsDirWritable(), IsFileExecutable() &c (TODO)
 151
 152     // various file/dir operations
 153
 154         // retrieve the value of the current working directory
 155     void AssignCwd();
 156     static wxString GetCwd();
 157
 158         // change the current working directory
 159     bool SetCwd();
 160     static bool SetCwd( const wxString &cwd );
 161
 162         // get the value of user home (Unix only mainly)
 163     void AssignHomeDir();
 164     static wxString GetHomeDir();
 165
 166         // get a temp file name starting with thespecified prefix
 167     void AssignTempFileName( const wxString &prefix );
 168
 169     // directory creation and removal
 170     bool Mkdir( int perm = 0777 );
 171     static bool Mkdir( const wxString &dir, int perm = 0777 );
 172
 173     bool Rmdir();
 174     static bool Rmdir( const wxString &dir );
 175
 176     // operations on the path
 177
 178         // normalize the path: with the default flags value, the path will be
 179         // made absolute, without any ".." and "." and all environment
 180         // variables will be expanded in it
 181         //
 182         // this may be done using another (than current) value of cwd
 183     bool Normalize(wxPathNormalize flags = wxPATH_NORM_ALL,
 184                    const wxString& cwd = wxEmptyString,
 185                    wxPathFormat format = wxPATH_NATIVE);
 186
 187     // Comparison
 188
 189         // uses the current platform settings
 190     bool operator==(const wxFileName& filename) { return SameAs(filename); }
 191     bool operator==(const wxString& filename)
 192         { return *this == wxFileName(filename); }
 193
 194         // compares with the rules of this platform
 195     bool SameAs(const wxFileName &filepath,
 196                 wxPathFormat format = wxPATH_NATIVE);
 197
 198     // Tests
 199     static bool IsCaseSensitive( wxPathFormat format = wxPATH_NATIVE );
 200     bool IsRelative( wxPathFormat format = wxPATH_NATIVE );
 201     bool IsAbsolute( wxPathFormat format = wxPATH_NATIVE );
 202
 203     // get the string of path separators for this format
 204     static wxString GetPathSeparators(wxPathFormat format = wxPATH_NATIVE);
 205
 206     // is the char a path separator for this format?
 207     static bool IsPathSeparator(wxChar ch, wxPathFormat format = wxPATH_NATIVE);
 208
 209     // FIXME: what exactly does this do?
 210     bool IsWild( wxPathFormat format = wxPATH_NATIVE );
 211
 212     // Dir accessors
 213     void AppendDir( const wxString &dir );
 214     void PrependDir( const wxString &dir );
 215     void InsertDir( int before, const wxString &dir );
 216     void RemoveDir( int pos );
 217     size_t GetDirCount() const { return m_dirs.GetCount(); }
 218
 219     // Other accessors
 220     void SetExt( const wxString &ext )          { m_ext = ext; }
 221     wxString GetExt() const                     { return m_ext; }
 222     bool HasExt() const                         { return !m_ext.IsEmpty(); }
 223
 224     void SetName( const wxString &name )        { m_name = name; }
 225     wxString GetName() const                    { return m_name; }
 226     bool HasName() const                        { return !m_name.IsEmpty(); }
 227
 228     // full name is the file name + extension (but without the path)
 229     void SetFullName(const wxString& fullname);
 230     wxString GetFullName() const;
 231
 232     const wxArrayString &GetDirs() const        { return m_dirs; }
 233
 234     // Construct path only - possibly with the trailing separator
 235     wxString GetPath( bool add_separator = FALSE,
 236                       wxPathFormat format = wxPATH_NATIVE ) const;
 237
 238     // more readable synonym
 239     wxString GetPathWithSep(wxPathFormat format = wxPATH_NATIVE ) const
 240         { return GetPath(TRUE /* add separator */, format); }
 241
 242     // Construct full path with name and ext
 243     wxString GetFullPath( wxPathFormat format = wxPATH_NATIVE ) const;
 244
 245     // Return the short form of the path (returns identity on non-Windows platforms)
 246     wxString GetShortPath() const;
 247
 248     // Return the long form of the path (returns identity on non-Windows platforms)
 249     wxString GetLongPath() const;
 250
 251     // various helpers
 252
 253         // get the canonical path format for this platform
 254     static wxPathFormat GetFormat( wxPathFormat format = wxPATH_NATIVE );
 255
 256         // split a fullpath into path, (base) name and ext (all of the pointers
 257         // can be NULL)
 258     static void SplitPath(const wxString& fullpath,
 259                           wxString *path,
 260                           wxString *name,
 261                           wxString *ext,
 262                           wxPathFormat format = wxPATH_NATIVE);
 263
 264 private:
 265     // the path components of the file
 266     wxArrayString   m_dirs;
 267
 268     // the file name and extension (empty for directories)
 269     wxString        m_name,
 270                     m_ext;
 271 };
 272
 273 #endif // _WX_FILENAME_H_
 274