40 lines
1.1 KiB
C++
40 lines
1.1 KiB
C++
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//
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// Copyright (c) 2019-2024 Ruben Perez Hidalgo (rubenperez038 at gmail dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef BOOST_MYSQL_IMPL_INTERNAL_CALL_NEXT_CHAR_HPP
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#define BOOST_MYSQL_IMPL_INTERNAL_CALL_NEXT_CHAR_HPP
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#include <boost/mysql/character_set.hpp>
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#include <boost/assert.hpp>
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#include <cstddef>
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namespace boost {
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namespace mysql {
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namespace detail {
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inline std::size_t call_next_char(const character_set& charset, const char* first, const char* last) noexcept
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{
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// Range must be non-empty
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BOOST_ASSERT(last > first);
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// ASCII characters are always 1 byte (UTF-16 and friends are not supported)
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auto* data = reinterpret_cast<const unsigned char*>(first);
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if (*data < 0x80)
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return 1u;
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// May be a multi-byte character. Call the relevant function
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return charset.next_char({data, static_cast<std::size_t>(last - first)});
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}
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} // namespace detail
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} // namespace mysql
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} // namespace boost
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#endif
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