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// OpenVPN -- An application to securely tunnel IP networks
// over a single port, with support for SSL/TLS-based
// session authentication and key exchange,
// packet encryption, packet authentication, and
// packet compression.
//
// Copyright (C) 2012- OpenVPN Inc.
//
// SPDX-License-Identifier: MPL-2.0 OR AGPL-3.0-only WITH openvpn3-openssl-exception
//
#pragma once
#include <string>
#include <type_traits>
#include <openvpn/common/stringtempl.hpp>
namespace openvpn::StringTempl {
// empty
// for objects that define an empty method
template <typename T>
inline auto empty(const T &t) -> decltype(t.empty())
{
return t.empty();
}
// for numerical values
template <typename T,
typename std::enable_if<std::is_arithmetic<T>::value, int>::type = 0>
inline bool empty(T value)
{
return false;
}
// to_string
// for objects that define a to_string() method
template <typename T>
inline auto to_string(const T &t) -> decltype(t.to_string())
{
return t.to_string();
}
// for numerical values
template <typename T,
typename std::enable_if<std::is_arithmetic<T>::value, int>::type = 0>
inline std::string to_string(T value)
{
return std::to_string(value);
}
} // namespace openvpn::StringTempl
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