include/wx/msw/iniconf.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        include/wx/msw/iniconf.h
   3 // Purpose:     INI-file based wxConfigBase implementation
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     27.07.98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef   _INICONF_H
  13 #define   _INICONF_H
  14
  15 // ----------------------------------------------------------------------------
  16 // wxIniConfig is a wxConfig implementation which uses MS Windows INI files to
  17 // store the data. Because INI files don't really support arbitrary nesting of
  18 // groups, we do the following:
  19 //  (1) in win.ini file we store all entries in the [vendor] section and
  20 //      the value group1/group2/key is mapped to the value group1_group2_key
  21 //      in this section, i.e. all path separators are replaced with underscore
  22 //  (2) in appname.ini file we map group1/group2/group3/key to the entry
  23 //      group2_group3_key in [group1]
  24 //
  25 // Of course, it might lead to indesirable results if '_' is also used in key
  26 // names (i.e. group/key is the same as group_key) and also GetPath() result
  27 // may be not what you would expect it to be.
  28 //
  29 // Another limitation: the keys and section names are never case-sensitive
  30 // which might differ from wxFileConfig it it was compiled with
  31 // wxCONFIG_CASE_SENSITIVE option.
  32 // ----------------------------------------------------------------------------
  33
  34 // for this class, "local" file is the file appname.ini and the global file
  35 // is the [vendor] subsection of win.ini (default for "vendor" is to be the
  36 // same as appname). The file name (strAppName parameter) may, in fact,
  37 // contain the full path to the file. If it doesn't, the file is searched for
  38 // in the Windows directory.
  39 class WXDLLEXPORT wxIniConfig : public wxConfigBase
  40 {
  41 public:
  42   // ctor & dtor
  43     // if strAppName doesn't contain the extension and is not an absolute path,
  44     // ".ini" is appended to it. if strVendor is empty, it's taken to be the
  45     // same as strAppName.
  46   wxIniConfig(const wxString& strAppName = wxEmptyString, const wxString& strVendor = wxEmptyString,
  47     const wxString& localFilename = wxEmptyString, const wxString& globalFilename = wxEmptyString, long style = wxCONFIG_USE_LOCAL_FILE);
  48   virtual ~wxIniConfig();
  49
  50   // implement inherited pure virtual functions
  51   virtual void SetPath(const wxString& strPath);
  52   virtual const wxString& GetPath() const;
  53
  54   virtual bool GetFirstGroup(wxString& str, long& lIndex) const;
  55   virtual bool GetNextGroup (wxString& str, long& lIndex) const;
  56   virtual bool GetFirstEntry(wxString& str, long& lIndex) const;
  57   virtual bool GetNextEntry (wxString& str, long& lIndex) const;
  58
  59   virtual size_t GetNumberOfEntries(bool bRecursive = false) const;
  60   virtual size_t GetNumberOfGroups(bool bRecursive = false) const;
  61
  62   virtual bool HasGroup(const wxString& strName) const;
  63   virtual bool HasEntry(const wxString& strName) const;
  64
  65   // return true if the current group is empty
  66   bool IsEmpty() const;
  67
  68   virtual bool Flush(bool bCurrentOnly = false);
  69
  70   virtual bool RenameEntry(const wxString& oldName, const wxString& newName);
  71   virtual bool RenameGroup(const wxString& oldName, const wxString& newName);
  72
  73   virtual bool DeleteEntry(const wxString& Key, bool bGroupIfEmptyAlso = true);
  74   virtual bool DeleteGroup(const wxString& szKey);
  75   virtual bool DeleteAll();
  76
  77 protected:
  78   // read/write
  79   bool DoReadString(const wxString& key, wxString *pStr) const;
  80   bool DoReadLong(const wxString& key, long *plResult) const;
  81   bool DoReadBinary(const wxString& key, wxMemoryBuffer *buf) const;
  82
  83   bool DoWriteString(const wxString& key, const wxString& szValue);
  84   bool DoWriteLong(const wxString& key, long lValue);
  85   bool DoWriteBinary(const wxString& key, const wxMemoryBuffer& buf);
  86
  87 private:
  88   // helpers
  89   wxString GetPrivateKeyName(const wxString& szKey) const;
  90   wxString GetKeyName(const wxString& szKey) const;
  91
  92   wxString m_strLocalFilename;  // name of the private INI file
  93   wxString m_strGroup,    // current group in appname.ini file
  94            m_strPath;     // the rest of the path (no trailing '_'!)
  95
  96   DECLARE_NO_COPY_CLASS(wxIniConfig)
  97   DECLARE_ABSTRACT_CLASS(wxIniConfig)
  98 };
  99
 100 #endif  //_INICONF_H