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39 lines
1.2 KiB
C++
39 lines
1.2 KiB
C++
/* Copyright 2017, Michele Santullo
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* This file is part of "tawashi".
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*
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* "tawashi" is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* "tawashi" 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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*
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* You should have received a copy of the GNU General Public License
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* along with "tawashi". If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <boost/utility/string_ref.hpp>
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#include <string>
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#if !defined(_GNU_SOURCE)
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# define _GNU_SOURCE
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#endif
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#include <cstddef>
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#include <utility>
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#include <boost/optional.hpp>
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namespace tawashi {
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boost::optional<std::string> get_env (const char* parName);
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template <typename A>
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A get_env_as (const char* parName, const A& parDefault);
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template <>
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std::string get_env_as (const char* parName, const std::string& parDefault);
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template <>
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std::size_t get_env_as (const char* parName, const std::size_t& parDefault);
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} //namespace tawashi
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