106 lines
3.2 KiB
C++
106 lines
3.2 KiB
C++
/*
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CONFIGFACADE - C++ convenience wrapper and startup of the config system
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Copyright (C) Lumiera.org
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2008, Hermann Vosseler <Ichthyostega@web.de>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/** @file config-facade.h
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** The lumiera::Config wrapper class addresses two issues.
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** First, it registers startup and shutdown hooks to bring up the config system
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** as early as possible. Later, on application main initialisation, the global
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** config interface is opened and wrapped for convenient access from C++ code.
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**
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** @note This was created as part of a first draft towards an application
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** wide configuration system. Later (around 2012) it became clear that
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** we can not judge the requirements for such a system yet, so we deferred
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** the topic altogether. Meanwhile, this facade is sporadically used to
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** mark the necessity to retrieve some "parametrisation values".
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** @warning as a preliminary solution, the original configuration system draft
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** was detached and replaced by an _ini file solution_ based on lib Boost.
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**
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** @todo there ought to be an external Interface for the Config subsystem.
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** But the full-blown Config system isn't implemented yet anyway
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**
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** @see config.h
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** @see lumiera::AppState
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** @see main.cpp
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*/
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#ifndef INTERFACE_CONFIGFACADE_H
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#define INTERFACE_CONFIGFACADE_H
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#ifdef __cplusplus /* ============== C++ Interface ================= */
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#include "lib/depend.hpp"
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#include "lib/symbol.hpp"
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#include <string>
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namespace lumiera {
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using std::string;
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/*****************************************************************//**
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* C++ wrapper for convenient access to the Lumiera config system.
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*
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* @warning Config system not fully implemented yet. Thus for now
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* this facade is wired with the setup.ini and will just
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* fetch the values from there.
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*/
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class Config
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{
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public:
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static string get (lib::Literal key);
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static lib::Depend<Config> instance;
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private:
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Config();
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~Config();
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friend class lib::DependencyFactory<Config>;
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};
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} // namespace lumiera
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#else /* =========================== C Interface ====================== */
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/** retrieve the default plugin search path from the
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* basic applications setup.ini
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* @return a fully expanded string suitable to be fed
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* to the lumiera_config_setdefault function
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* @see lumiera_plugin_discover
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*/
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const char* lumiera_get_plugin_path_default ();
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#endif
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#endif
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