env_vars.h

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2018 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef ENV_VARS_H
#define ENV_VARS_H

#include <wx/string.h>

#include <vector>

#include <core/optional.h>

using ENV_VAR_LIST = std::vector<wxString>;

bool IsEnvVarImmutable( const wxString& aEnvVar );

const ENV_VAR_LIST& GetPredefinedEnvVars();

wxString LookUpEnvVarHelp( const wxString& aEnvVar );

template <typename VAL_TYPE>
OPT<VAL_TYPE> GetEnvVar( const wxString& aEnvVarName );

template<>
OPT<wxString> GetEnvVar( const wxString& aEnvVarName );

template <>
OPT<double> GetEnvVar( const wxString& aEnvVarName );


#endif /* ENV_VARS_H */