isgraph.hpp

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// SPDX-License-Identifier: BSL-1.0
// SPDX-FileCopyrightText: Copyright (C) 2020 Tobias Hienzsch
 
#ifndef TETL_CCTYPE_ISGRAPH_HPP
#define TETL_CCTYPE_ISGRAPH_HPP
 
#include <etl/_cctype/isdigit.hpp>
#include <etl/_cctype/islower.hpp>
#include <etl/_cctype/ispunct.hpp>
#include <etl/_cctype/isupper.hpp>
 
namespace etl {
 
/// \brief Checks if the given character is graphic (has a graphical
/// representation) as classified by the default C locale.
///
/// \param ch Character to classify.
///
/// \returns Non-zero value if the character is a punctuation character, zero
/// otherwise.
///
/// https://en.cppreference.com/w/cpp/string/byte/isgraph
///
/// \ingroup cctype
[[nodiscard]] constexpr auto isgraph(int ch) noexcept -> int
{
    auto const isDigit = etl::isdigit(ch) != 0;
    auto const isUpper = etl::isupper(ch) != 0;
    auto const isLower = etl::islower(ch) != 0;
    auto const isPunct = etl::ispunct(ch) != 0;
 
    return static_cast<int>(isDigit || isLower || isUpper || isPunct);
}
} // namespace etl
 
#endif // TETL_CCTYPE_ISGRAPH_HPP