0d3820b348
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@176 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
178 lines
6.7 KiB
C++
178 lines
6.7 KiB
C++
///////////////////////////////////////////////////////////////////////////////
|
|
// Name: config.h
|
|
// Purpose: declaration of the base class of all config implementations
|
|
// (see also: fileconf.h and msw/regconf.h)
|
|
// Author: Karsten Ballüder & Vadim Zeitlin
|
|
// Modified by:
|
|
// Created: 07.04.98 (adapted from appconf.h)
|
|
// RCS-ID: $Id$
|
|
// Copyright: (c) 1997 Karsten Ballüder Ballueder@usa.net
|
|
// Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
|
|
// Licence: wxWindows license
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef _APPCONF_H
|
|
#define _APPCONF_H
|
|
|
|
#ifdef __GNUG__
|
|
#pragma interface "config.h"
|
|
#endif
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// compile options
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// it won't compile without it anyhow
|
|
#ifndef USE_WXCONFIG
|
|
#error "Please define USE_WXCONFIG or remove config.cpp from your makefile"
|
|
#endif // USE_WXCONFIG
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// constants
|
|
// ----------------------------------------------------------------------------
|
|
|
|
/// shall we be case sensitive in parsing variable names?
|
|
#ifndef APPCONF_CASE_SENSITIVE
|
|
#define APPCONF_CASE_SENSITIVE FALSE
|
|
#endif
|
|
|
|
/// separates group and entry names
|
|
#ifndef APPCONF_PATH_SEPARATOR
|
|
#define APPCONF_PATH_SEPARATOR '/'
|
|
#endif
|
|
|
|
/// introduces immutable entries
|
|
#ifndef APPCONF_IMMUTABLE_PREFIX
|
|
#define APPCONF_IMMUTABLE_PREFIX '!'
|
|
#endif
|
|
|
|
/// should we use registry instead of configuration files under Win32?
|
|
#ifndef APPCONF_WIN32_NATIVE
|
|
#define APPCONF_WIN32_NATIVE TRUE
|
|
#endif
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// various helper global functions
|
|
// ----------------------------------------------------------------------------
|
|
|
|
/*
|
|
Replace environment variables ($SOMETHING) with their values. The format is
|
|
$VARNAME or ${VARNAME} where VARNAME contains alphanumeric characters and
|
|
'_' only. '$' must be escaped ('\$') in order to be taken literally.
|
|
*/
|
|
extern wxString ExpandEnvVars(const wxString& str);
|
|
|
|
/*
|
|
Split path into parts removing '..' in progress
|
|
*/
|
|
extern void SplitPath(wxArrayString& aParts, const char *sz);
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// abstract base class wxConfig which defines the interface for derived classes
|
|
//
|
|
// wxConfig organizes the items in a tree-like structure (modeled after the
|
|
// Unix/Dos filesystem). There are groups (directories) and keys (files).
|
|
// There is always one current group given by the current path.
|
|
//
|
|
// Keys are pairs "key_name = value" where value may be of string or integer
|
|
// (long) type (@@@ doubles and other types such as wxDate coming soon).
|
|
// ----------------------------------------------------------------------------
|
|
class wxConfig
|
|
{
|
|
public:
|
|
// static functions
|
|
// sets the config object, returns the previous pointer
|
|
static wxConfig *Set(wxConfig *pConfig);
|
|
// get the config object, creates it on demand
|
|
static wxConfig *Get() { if ( !ms_pConfig ) Create(); return ms_pConfig; }
|
|
// create a new config object
|
|
static void Create();
|
|
|
|
// ctor & virtual dtor
|
|
wxConfig() { }
|
|
virtual ~wxConfig();
|
|
|
|
// path management
|
|
// set current path: if the first character is '/', it's the absolute path,
|
|
// otherwise it's a relative path. '..' is supported. If the strPath
|
|
// doesn't exist it is created.
|
|
virtual void SetPath(const wxString& strPath) = 0;
|
|
// retrieve the current path (always as absolute path)
|
|
virtual const wxString& GetPath() const = 0;
|
|
|
|
// enumeration: all functions here return false when there are no more items.
|
|
// you must pass the same lIndex to GetNext and GetFirst (don't modify it)
|
|
// enumerate subgroups
|
|
virtual bool GetFirstGroup(wxString& str, long& lIndex) = 0;
|
|
virtual bool GetNextGroup (wxString& str, long& lIndex) = 0;
|
|
// enumerate entries
|
|
virtual bool GetFirstEntry(wxString& str, long& lIndex) = 0;
|
|
virtual bool GetNextEntry (wxString& str, long& lIndex) = 0;
|
|
|
|
// key access: returns TRUE if value was really read, FALSE if default used
|
|
// (and if the key is not found the default value is returned.)
|
|
// read a string from the key
|
|
virtual bool Read(wxString *pStr, const char *szKey,
|
|
const char *szDefault = NULL) const = 0;
|
|
// another version using statis buffer - it means it will be overwritten
|
|
// after each call to this function!
|
|
virtual const char *Read(const char *szKey,
|
|
const char *szDefault = NULL) const;
|
|
// the same for longs
|
|
long Read(const char *szKey, long lDefault) const
|
|
{ long l; Read(&l, szKey, lDefault); return l; }
|
|
// and another version: returns true if default value is returned
|
|
virtual bool Read(long *pl, const char *szKey, long lDefault = 0) const = 0;
|
|
|
|
// write the value (return true on success)
|
|
virtual bool Write(const char *szKey, const char *szValue) = 0;
|
|
virtual bool Write(const char *szKey, long lValue) = 0;
|
|
// permanently writes all changes
|
|
virtual bool Flush(bool bCurrentOnly = FALSE) = 0;
|
|
|
|
// delete entries/groups
|
|
// deletes the specified entry and the group it belongs to if
|
|
// it was the last key in it and the second parameter is true
|
|
virtual bool DeleteEntry(const char *szKey,
|
|
bool bDeleteGroupIfEmpty = TRUE) = 0;
|
|
// delete the group (with all subgroups)
|
|
virtual bool DeleteGroup(const char *szKey) = 0;
|
|
// delete the whole underlying object (disk file, registry key, ...)
|
|
// primarly for use by desinstallation routine.
|
|
virtual bool DeleteAll() = 0;
|
|
|
|
protected:
|
|
static bool IsImmutable(const char *szKey)
|
|
{ return *szKey == APPCONF_IMMUTABLE_PREFIX; }
|
|
|
|
// a handy little class which changes current path to the path of given entry
|
|
// and restores it in dtor: so if you declare a local variable of this type,
|
|
// you work in the entry directory and the path is automatically restored
|
|
// when function returns
|
|
class PathChanger
|
|
{
|
|
public:
|
|
// ctor/dtor do path changing/restorin
|
|
PathChanger(const wxConfig *pContainer, const wxString& strEntry);
|
|
~PathChanger();
|
|
|
|
// get the key name
|
|
const wxString& Name() const { return m_strName; }
|
|
|
|
private:
|
|
wxConfig *m_pContainer; // object we live in
|
|
wxString m_strName, // name of entry (i.e. name only)
|
|
m_strOldPath; // saved path
|
|
bool m_bChanged; // was the path changed?
|
|
};
|
|
|
|
// are we doing automatic environment variable expansion?
|
|
bool m_bExpandEnvVars;
|
|
|
|
// static variables
|
|
static wxConfig *ms_pConfig;
|
|
};
|
|
|
|
#endif //_APPCONF_H
|
|
|