Added thirdparty: boost library

thirdparty/include/boost/mysql/impl/internal/protocol/bit_deserialization.hpp

@@ -0,0 +1,47 @@
+//
+// Copyright (c) 2019-2023 Ruben Perez Hidalgo (rubenperez038 at gmail dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef BOOST_MYSQL_IMPL_INTERNAL_PROTOCOL_BIT_DESERIALIZATION_HPP
+#define BOOST_MYSQL_IMPL_INTERNAL_PROTOCOL_BIT_DESERIALIZATION_HPP
+
+#include <boost/mysql/field_view.hpp>
+#include <boost/mysql/string_view.hpp>
+
+#include <boost/mysql/impl/internal/protocol/serialization.hpp>
+
+#include <boost/endian/conversion.hpp>
+
+#include <cstring>
+
+namespace boost {
+namespace mysql {
+namespace detail {
+
+// All BIT values come as binary values between 1 and 8 bytes length packed in string_lenenc's,
+// for both the text and the binary protocols. As the text protocol already unpacks the
+// string_lenenc layer, this function is in charge of just parsing the binary payload. The length of
+// the BIT value depends on how the type was defined in the table (e.g. BIT(14) will send a 2 byte
+// value; BIT(54) will send a 7 byte one). Values are sent as big-endian.
+inline deserialize_errc deserialize_bit(string_view from, field_view& to) noexcept
+{
+    std::size_t num_bytes = from.size();
+    if (num_bytes < 1 || num_bytes > 8)
+    {
+        return deserialize_errc::protocol_value_error;
+    }
+    unsigned char temp[8]{};
+    unsigned char* dest = temp + sizeof(temp) - num_bytes;
+    std::memcpy(dest, from.data(), num_bytes);
+    to = field_view(endian::load_big_u64(temp));
+    return deserialize_errc::ok;
+}
+
+}  // namespace detail
+}  // namespace mysql
+}  // namespace boost
+
+#endif