c801d85f15
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
122 lines
4.7 KiB
C++
122 lines
4.7 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name:
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// Purpose:
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// Author: Karsten Ballüder & Vadim Zeitlin
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// Modified by:
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// Created: 07.04.98 (adapted from appconf.h)
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// RCS-ID: $Id$
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// Copyright: (c) 1997 Karsten Ballüder Ballueder@usa.net
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// Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
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// Licence: wxWindows license
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _APPCONF_H
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#define _APPCONF_H
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// ----------------------------------------------------------------------------
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// constants
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// ----------------------------------------------------------------------------
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/// shall we be case sensitive in parsing variable names?
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#ifndef APPCONF_CASE_SENSITIVE
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#define APPCONF_CASE_SENSITIVE FALSE
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#endif
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/// separates group and entry names
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#ifndef APPCONF_PATH_SEPARATOR
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#define APPCONF_PATH_SEPARATOR '/'
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#endif
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/// introduces immutable entries
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#ifndef APPCONF_IMMUTABLE_PREFIX
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#define APPCONF_IMMUTABLE_PREFIX '!'
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#endif
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/// should we use registry instead of configuration files under Win32?
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#ifndef APPCONF_WIN32_NATIVE
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#define APPCONF_WIN32_NATIVE TRUE
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#endif
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// ----------------------------------------------------------------------------
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// global functions
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// ----------------------------------------------------------------------------
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/*
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Replace environment variables ($SOMETHING) with their values. The format is
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$VARNAME or ${VARNAME} where VARNAME contains alphanumeric characters and
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'_' only. '$' must be escaped ('\$') in order to be taken literally.
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*/
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wxString ExpandEnvVars(const wxString& str);
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// ----------------------------------------------------------------------------
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// abstract base class wxConfig which defines the interface for derived classes
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//
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// wxConfig organizes the items in a tree-like structure (modeled after the
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// Unix/Dos filesystem). There are groups (directories) and keys (files).
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// There is always one current group given by the current path.
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//
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// Keys are pairs "key_name = value" where value may be of string or integer
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// (long) type (@@@ doubles and other types such as wxDate coming soon).
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// ----------------------------------------------------------------------------
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class wxConfig
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{
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public:
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// ctor & virtual dtor
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wxConfig() { }
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virtual ~wxConfig();
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// path management
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// set current path: if the first character is '/', it's the absolute path,
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// otherwise it's a relative path. '..' is supported. If the strPath
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// doesn't exist it is created.
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virtual void SetPath(const wxString& strPath) = 0;
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// retrieve the current path (always as absolute path)
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virtual const wxString& GetPath() const = 0;
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// enumeration: all functions here return false when there are no more items.
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// you must pass the same lIndex to GetNext and GetFirst (don't modify it)
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// enumerate subgroups
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virtual bool GetFirstGroup(wxString& str, long& lIndex) = 0;
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virtual bool GetNextGroup (wxString& str, long& lIndex) = 0;
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// enumerate entries
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virtual bool GetFirstEntry(wxString& str, long& lIndex) = 0;
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virtual bool GetNextEntry (wxString& str, long& lIndex) = 0;
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// key access
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// read a string or long value from the key. If the key is not
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// found the default value is returned.
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virtual const char *Read(const char *szKey,
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const char *szDefault = NULL) const = 0;
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virtual long Read(const char *szKey, long lDefault) const = 0;
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// write the value (return true on success)
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virtual bool Write(const char *szKey, const char *szValue) = 0;
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virtual bool Write(const char *szKey, long lValue) = 0;
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// permanently writes all changes
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virtual bool Flush(bool bCurrentOnly = FALSE) = 0;
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// delete entries/groups
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// deletes the specified entry and the group it belongs to if
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// it was the last key in it and the second parameter is true
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virtual bool DeleteEntry(const char *szKey,
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bool bDeleteGroupIfEmpty = TRUE) = 0;
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// delete the group (with all subgroups)
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virtual bool DeleteGroup(const char *szKey) = 0;
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// delete the whole underlying object (disk file, registry key, ...)
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// primarly for use by desinstallation routine.
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virtual bool DeleteAll() = 0;
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protected:
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// true if environment variables are to be auto-expanded
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bool m_bExpandEnvVars;
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};
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// ----------------------------------------------------------------------------
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// functions to create different config implementations
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// ----------------------------------------------------------------------------
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wxConfig *CreateFileConfig(const wxString& strFile, bool bLocalOnly = FALSE);
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#endif //_APPCONF_H
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