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 #include "wx/datetime.h"
  40
  41 // ----------------------------------------------------------------------------
  42 // constants
  43 // ----------------------------------------------------------------------------
  44
  45 // the various values for the path format: this mainly affects the path
  46 // separator but also whether or not the path has the drive part (as under
  47 // Windows)
  48 enum wxPathFormat
  49 {
  50     wxPATH_NATIVE = 0,      // the path format for the current platform
  51     wxPATH_UNIX,
  52     wxPATH_MAC,
  53     wxPATH_DOS,
  54
  55     wxPATH_BEOS = wxPATH_UNIX,
  56     wxPATH_WIN = wxPATH_DOS,
  57     wxPATH_OS2 = wxPATH_DOS
  58 };
  59
  60 // the kind of normalization to do with the file name: these values can be
  61 // or'd together to perform several operations at once
  62 enum wxPathNormalize
  63 {
  64     wxPATH_NORM_ENV_VARS = 0x0001,  // replace env vars with their values
  65     wxPATH_NORM_DOTS     = 0x0002,  // squeeze all .. and . and prepend cwd
  66     wxPATH_NORM_TILDE    = 0x0004,  // Unix only: replace ~ and ~user
  67     wxPATH_NORM_CASE     = 0x0008,  // if case insensitive => tolower
  68     wxPATH_NORM_ABSOLUTE = 0x0010,  // make the path absolute
  69     wxPATH_NORM_LONG =     0x0020,  // make the path the long form
  70     wxPATH_NORM_ALL      = 0x003f
  71 };
  72
  73 // ----------------------------------------------------------------------------
  74 // wxFileName: encapsulates a file path
  75 // ----------------------------------------------------------------------------
  76
  77 class WXDLLEXPORT wxFileName
  78 {
  79 public:
  80     // constructors and assignment
  81
  82         // the usual stuff
  83     wxFileName() { }
  84     wxFileName( const wxFileName &filepath ) { Assign(filepath); }
  85
  86         // from a full filename: if it terminates with a '/', a directory path
  87         // is contructed (the name will be empty), otherwise a file name and
  88         // extension are extracted from it
  89     wxFileName( const wxString& fullpath, wxPathFormat format = wxPATH_NATIVE )
  90         { Assign( fullpath, format ); }
  91
  92         // from a directory name and a file name
  93     wxFileName(const wxString& path,
  94                const wxString& name,
  95                wxPathFormat format = wxPATH_NATIVE)
  96         { Assign(path, name, format); }
  97
  98         // from a directory name, file base name and extension
  99     wxFileName(const wxString& path,
 100                const wxString& name,
 101                const wxString& ext,
 102                wxPathFormat format = wxPATH_NATIVE)
 103         { Assign(path, name, ext, format); }
 104
 105         // the same for delayed initialization
 106
 107         // VZ: wouldn't it be better to call this Create() for consistency with
 108         //     all GUI classes? Personally, I like Set() more than Assign() too
 109
 110     void Assign(const wxFileName& filepath);
 111     void Assign(const wxString& fullpath,
 112                 wxPathFormat format = wxPATH_NATIVE);
 113     void Assign(const wxString& path,
 114                 const wxString& name,
 115                 wxPathFormat format = wxPATH_NATIVE);
 116     void Assign(const wxString& path,
 117                 const wxString& name,
 118                 const wxString& ext,
 119                 wxPathFormat format = wxPATH_NATIVE);
 120     void AssignDir(const wxString& dir, wxPathFormat format = wxPATH_NATIVE)
 121         { Assign(dir, _T(""), format); }
 122
 123         // assorted assignment operators
 124
 125     wxFileName& operator=(const wxFileName& filename)
 126         { Assign(filename); return *this; }
 127
 128     wxFileName& operator=(const wxString& filename)
 129         { Assign(filename); return *this; }
 130
 131         // reset all components to default, uninitialized state
 132     void Clear();
 133
 134         // static pseudo constructors
 135     static wxFileName FileName(const wxString& file);
 136     static wxFileName DirName(const wxString& dir);
 137
 138     // file tests
 139
 140         // is the filename valid at all?
 141     bool IsOk() const { return !m_dirs.IsEmpty() || !m_name.IsEmpty(); }
 142
 143         // does the file with this name exists?
 144     bool FileExists();
 145     static bool FileExists( const wxString &file );
 146
 147         // does the directory with this name exists?
 148     bool DirExists();
 149     static bool DirExists( const wxString &dir );
 150
 151         // VZ: also need: IsDirWritable(), IsFileExecutable() &c (TODO)
 152
 153     // time functions
 154
 155         // set the file creation and last access/mod times
 156         // (any of the pointers may be NULL)
 157     bool SetTimes(const wxDateTime *dtCreate,
 158                   const wxDateTime *dtAccess,
 159                   const wxDateTime *dtMod);
 160
 161         // set the access and modification times to the current moment
 162     bool Touch();
 163
 164         // return the last access, last modification and last change times
 165         // (any of the pointers may be NULL)
 166     bool GetTimes(wxDateTime *dtAccess,
 167                   wxDateTime *dtMod,
 168                   wxDateTime *dtChange) const;
 169
 170         // convenience wrapper: get just the last mod time of the file
 171     wxDateTime GetModificationTime() const
 172     {
 173         wxDateTime dtMod;
 174         (void)GetTimes(NULL, &dtMod, NULL);
 175         return dtMod;
 176     }
 177
 178     // various file/dir operations
 179
 180         // retrieve the value of the current working directory
 181     void AssignCwd();
 182     static wxString GetCwd();
 183
 184         // change the current working directory
 185     bool SetCwd();
 186     static bool SetCwd( const wxString &cwd );
 187
 188         // get the value of user home (Unix only mainly)
 189     void AssignHomeDir();
 190     static wxString GetHomeDir();
 191
 192         // get a temp file name starting with thespecified prefix
 193     void AssignTempFileName( const wxString &prefix );
 194
 195     // directory creation and removal.
 196     // if full is TRUE, will try to make each directory in the path.
 197     bool Mkdir( int perm = 0777, bool full = FALSE);
 198     static bool Mkdir( const wxString &dir, int perm = 0777, bool full = FALSE );
 199
 200     bool Rmdir();
 201     static bool Rmdir( const wxString &dir );
 202
 203     // operations on the path
 204
 205         // normalize the path: with the default flags value, the path will be
 206         // made absolute, without any ".." and "." and all environment
 207         // variables will be expanded in it
 208         //
 209         // this may be done using another (than current) value of cwd
 210     bool Normalize(wxPathNormalize flags = wxPATH_NORM_ALL,
 211                    const wxString& cwd = wxEmptyString,
 212                    wxPathFormat format = wxPATH_NATIVE);
 213
 214     // Comparison
 215
 216         // compares with the rules of this platform
 217     bool SameAs(const wxFileName &filepath,
 218                 wxPathFormat format = wxPATH_NATIVE);
 219
 220         // uses the current platform settings
 221     bool operator==(const wxFileName& filename) { return SameAs(filename); }
 222     bool operator==(const wxString& filename)
 223         { return *this == wxFileName(filename); }
 224
 225     // Tests
 226     static bool IsCaseSensitive( wxPathFormat format = wxPATH_NATIVE );
 227     bool IsRelative( wxPathFormat format = wxPATH_NATIVE );
 228     bool IsAbsolute( wxPathFormat format = wxPATH_NATIVE );
 229
 230     // get the string of path separators for this format
 231     static wxString GetPathSeparators(wxPathFormat format = wxPATH_NATIVE);
 232
 233     // is the char a path separator for this format?
 234     static bool IsPathSeparator(wxChar ch, wxPathFormat format = wxPATH_NATIVE);
 235
 236     // FIXME: what exactly does this do?
 237     bool IsWild( wxPathFormat format = wxPATH_NATIVE );
 238
 239     // Dir accessors
 240     void AppendDir( const wxString &dir );
 241     void PrependDir( const wxString &dir );
 242     void InsertDir( int before, const wxString &dir );
 243     void RemoveDir( int pos );
 244     size_t GetDirCount() const { return m_dirs.GetCount(); }
 245
 246     // Other accessors
 247     void SetExt( const wxString &ext )          { m_ext = ext; }
 248     wxString GetExt() const                     { return m_ext; }
 249     bool HasExt() const                         { return !m_ext.IsEmpty(); }
 250
 251     void SetName( const wxString &name )        { m_name = name; }
 252     wxString GetName() const                    { return m_name; }
 253     bool HasName() const                        { return !m_name.IsEmpty(); }
 254
 255     // full name is the file name + extension (but without the path)
 256     void SetFullName(const wxString& fullname);
 257     wxString GetFullName() const;
 258
 259     const wxArrayString &GetDirs() const        { return m_dirs; }
 260
 261     // Construct path only - possibly with the trailing separator
 262     wxString GetPath( bool add_separator = FALSE,
 263                       wxPathFormat format = wxPATH_NATIVE ) const;
 264
 265     // more readable synonym
 266     wxString GetPathWithSep(wxPathFormat format = wxPATH_NATIVE ) const
 267         { return GetPath(TRUE /* add separator */, format); }
 268
 269     // Construct full path with name and ext
 270     wxString GetFullPath( wxPathFormat format = wxPATH_NATIVE ) const;
 271
 272     // Return the short form of the path (returns identity on non-Windows platforms)
 273     wxString GetShortPath() const;
 274
 275     // Return the long form of the path (returns identity on non-Windows platforms)
 276     wxString GetLongPath() const;
 277
 278     // various helpers
 279
 280         // get the canonical path format for this platform
 281     static wxPathFormat GetFormat( wxPathFormat format = wxPATH_NATIVE );
 282
 283         // split a fullpath into path, (base) name and ext (all of the pointers
 284         // can be NULL)
 285     static void SplitPath(const wxString& fullpath,
 286                           wxString *path,
 287                           wxString *name,
 288                           wxString *ext,
 289                           wxPathFormat format = wxPATH_NATIVE);
 290
 291 private:
 292     // the path components of the file
 293     wxArrayString   m_dirs;
 294
 295     // the file name and extension (empty for directories)
 296     wxString        m_name,
 297                     m_ext;
 298 };
 299
 300 #endif // _WX_FILENAME_H_
 301