interface/wx/fileconf.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        fileconf.h
   3 // Purpose:     interface of wxFileConfig
   4 // Author:      wxWidgets team
   5 // RCS-ID:      $Id$
   6 // Licence:     wxWindows licence
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 /**
  10     @class wxFileConfig
  11
  12     wxFileConfig implements wxConfigBase interface for
  13     storing and retrieving configuration information using plain text files. The
  14     files have a simple format reminiscent of Windows INI files with lines of the
  15     form @c "key = value" defining the keys and lines of special form
  16     @c "[group]" indicating the start of each group.
  17
  18     This class is used by default for wxConfig on Unix platforms but may also be
  19     used explicitly if you want to use files and not the registry even under
  20     Windows.
  21
  22     @library{wxbase}
  23     @category{cfg}
  24
  25     @see wxFileConfig::Save
  26 */
  27 class wxFileConfig : public wxConfigBase
  28 {
  29 public:
  30
  31     // New constructor: one size fits all. Specify wxCONFIG_USE_LOCAL_FILE or
  32     // wxCONFIG_USE_GLOBAL_FILE to say which files should be used.
  33     wxFileConfig(const wxString& appName = wxEmptyString,
  34                const wxString& vendorName = wxEmptyString,
  35                const wxString& localFilename = wxEmptyString,
  36                const wxString& globalFilename = wxEmptyString,
  37                long style = wxCONFIG_USE_LOCAL_FILE | wxCONFIG_USE_GLOBAL_FILE,
  38                const wxMBConv& conv = wxConvAuto());
  39
  40     /**
  41         Read the config data from the specified stream instead of the associated file,
  42         as usual.
  43
  44         @see Save()
  45     */
  46     wxFileConfig(wxInputStream& is, const wxMBConv& conv = wxConvAuto());
  47
  48     /**
  49         Return the full path to the file which would be used by wxFileConfig as global,
  50         system-wide, file if it were constructed with @a basename as "global filename"
  51         parameter in the constructor.
  52
  53         Notice that this function cannot be used if @a basename is already a full path name.
  54     */
  55     static wxFileName GetGlobalFile(const wxString& basename);
  56
  57     /**
  58         Return the full path to the file which would be used by wxFileConfig as local,
  59         user-specific, file if it were constructed with @a basename as "local filename"
  60         parameter in the constructor.
  61
  62         @a style has the same meaning as in @ref wxConfigBase::wxConfigBase "wxConfig constructor"
  63         and can contain any combination of styles but only wxCONFIG_USE_SUBDIR bit is
  64         examined by this function.
  65
  66         Notice that this function cannot be used if @a basename is already a full path name.
  67     */
  68     static wxFileName GetLocalFile(const wxString& basename, int style = 0);
  69
  70     static wxString GetGlobalFileName(const wxString& szFile);
  71     static wxString GetLocalFileName(const wxString& szFile, int style = 0);
  72
  73     /**
  74         Saves all config data to the given stream, returns @true if data was saved
  75         successfully or @false on error.
  76
  77         Note the interaction of this function with the internal "dirty flag": the
  78         data is saved unconditionally, i.e. even if the object is not dirty. However
  79         after saving it successfully, the dirty flag is reset so no changes will be
  80         written back to the file this object is associated with until you change its
  81         contents again.
  82
  83         @see wxConfigBase::Flush
  84     */
  85     virtual bool Save(wxOutputStream& os, const wxMBConv& conv = wxConvAuto());
  86
  87     /**
  88         Allows to set the mode to be used for the config file creation. For example, to
  89         create a config file which is not readable by other users (useful if it stores
  90         some sensitive information, such as passwords), you could use @c SetUmask(0077).
  91
  92         This function doesn't do anything on non-Unix platforms.
  93
  94         @see wxCHANGE_UMASK()
  95     */
  96     void SetUmask(int mode);
  97
  98   // implement inherited pure virtual functions
  99   virtual void SetPath(const wxString& strPath);
 100   virtual const wxString& GetPath() const;
 101
 102   virtual bool GetFirstGroup(wxString& str, long& lIndex) const;
 103   virtual bool GetNextGroup (wxString& str, long& lIndex) const;
 104   virtual bool GetFirstEntry(wxString& str, long& lIndex) const;
 105   virtual bool GetNextEntry (wxString& str, long& lIndex) const;
 106
 107   virtual size_t GetNumberOfEntries(bool bRecursive = false) const;
 108   virtual size_t GetNumberOfGroups(bool bRecursive = false) const;
 109
 110   virtual bool HasGroup(const wxString& strName) const;
 111   virtual bool HasEntry(const wxString& strName) const;
 112
 113   virtual bool Flush(bool bCurrentOnly = false);
 114
 115   virtual bool RenameEntry(const wxString& oldName, const wxString& newName);
 116   virtual bool RenameGroup(const wxString& oldName, const wxString& newName);
 117
 118   virtual bool DeleteEntry(const wxString& key, bool bGroupIfEmptyAlso = true);
 119   virtual bool DeleteGroup(const wxString& szKey);
 120   virtual bool DeleteAll();
 121 };
 122