100 lines
2.9 KiB
C++
100 lines
2.9 KiB
C++
//
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// Copyright (c) 2019-2023 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_FIELD_VIEW_IPP
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#define BOOST_MYSQL_IMPL_FIELD_VIEW_IPP
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#pragma once
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#include <boost/mysql/field_view.hpp>
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#include <boost/mysql/detail/config.hpp>
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#include <ostream>
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namespace boost {
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namespace mysql {
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namespace detail {
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BOOST_MYSQL_STATIC_OR_INLINE
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std::ostream& print_blob(std::ostream& os, blob_view value)
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{
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if (value.empty())
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return os << "{}";
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char buffer[16]{};
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os << "{ ";
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for (std::size_t i = 0; i < value.size(); ++i)
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{
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if (i != 0)
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os << ", ";
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unsigned byte = value[i];
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std::snprintf(buffer, sizeof(buffer), "0x%02x", byte);
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os << buffer;
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}
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os << " }";
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return os;
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}
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BOOST_MYSQL_STATIC_OR_INLINE
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std::ostream& print_time(std::ostream& os, const boost::mysql::time& value)
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{
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// Worst-case output is 26 chars, extra space just in case
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char buffer[64]{};
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using namespace std::chrono;
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const char* sign = value < microseconds(0) ? "-" : "";
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auto num_micros = value % seconds(1);
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auto num_secs = duration_cast<seconds>(value % minutes(1) - num_micros);
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auto num_mins = duration_cast<minutes>(value % hours(1) - num_secs);
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auto num_hours = duration_cast<hours>(value - num_mins);
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snprintf(
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buffer,
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sizeof(buffer),
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"%s%02d:%02u:%02u.%06u",
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sign,
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static_cast<int>(std::abs(num_hours.count())),
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static_cast<unsigned>(std::abs(num_mins.count())),
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static_cast<unsigned>(std::abs(num_secs.count())),
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static_cast<unsigned>(std::abs(num_micros.count()))
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);
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os << buffer;
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return os;
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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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std::ostream& boost::mysql::operator<<(std::ostream& os, const field_view& value)
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{
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// Make operator<< work for detail::string_view_offset types
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if (value.impl_.is_string_offset() || value.impl_.is_blob_offset())
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{
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return os << "<sv_offset>";
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}
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switch (value.kind())
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{
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case field_kind::null: return os << "<NULL>";
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case field_kind::int64: return os << value.get_int64();
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case field_kind::uint64: return os << value.get_uint64();
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case field_kind::string: return os << value.get_string();
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case field_kind::blob: return detail::print_blob(os, value.get_blob());
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case field_kind::float_: return os << value.get_float();
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case field_kind::double_: return os << value.get_double();
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case field_kind::date: return os << value.get_date();
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case field_kind::datetime: return os << value.get_datetime();
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case field_kind::time: return detail::print_time(os, value.get_time());
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default: BOOST_ASSERT(false); return os;
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}
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}
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#endif |