mirror of
https://codeberg.org/comaps/comaps
synced 2025-12-19 13:03:36 +00:00
e3e4a1985a
To expand with full Organic Maps and Maps.ME commits history run: git remote add om-historic [om-historic.git repo url] git fetch --tags om-historic git replace squashed-history historic-commits
66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
#pragma once
|
|
|
|
#include "coding/endianness.hpp"
|
|
|
|
#include <cstdint>
|
|
#include <type_traits>
|
|
|
|
namespace traits
|
|
{
|
|
namespace impl
|
|
{
|
|
template <typename T>
|
|
auto has_arrow_operator_checker(int) -> decltype(
|
|
std::declval<T &>().operator->(),
|
|
std::true_type {});
|
|
|
|
template <typename T>
|
|
std::false_type has_arrow_operator_checker(...);
|
|
} // namespace impl
|
|
|
|
template <typename T>
|
|
using has_arrow_operator = decltype(impl::has_arrow_operator_checker<T>(0));
|
|
} // namespace traits
|
|
|
|
template <class Sink, typename T>
|
|
std::enable_if_t<!traits::has_arrow_operator<Sink>::value &&
|
|
(std::is_integral<T>::value || std::is_enum<T>::value), void>
|
|
WriteToSink(Sink & sink, T const & v)
|
|
{
|
|
T const t = SwapIfBigEndianMacroBased(v);
|
|
sink.Write(&t, sizeof(T));
|
|
}
|
|
|
|
template <class Sink, typename T>
|
|
std::enable_if_t<traits::has_arrow_operator<Sink>::value &&
|
|
(std::is_integral<T>::value || std::is_enum<T>::value), void>
|
|
WriteToSink(Sink & sink, T const & v)
|
|
{
|
|
T const t = SwapIfBigEndianMacroBased(v);
|
|
sink->Write(&t, sizeof(T));
|
|
}
|
|
|
|
template <class Sink>
|
|
void WriteZeroesToSink(Sink & sink, uint64_t size)
|
|
{
|
|
uint8_t const zeroes[256] = { 0 };
|
|
for (uint64_t i = 0; i < (size >> 8); ++i)
|
|
sink.Write(zeroes, 256);
|
|
sink.Write(zeroes, size & 255);
|
|
}
|
|
|
|
template <typename Sink>
|
|
class WriterFunctor
|
|
{
|
|
public:
|
|
explicit WriterFunctor(Sink & sink) : m_sink(sink) {}
|
|
|
|
template <typename T> void operator() (T const & t) const
|
|
{
|
|
m_sink.Write(&t, sizeof(T));
|
|
}
|
|
|
|
private:
|
|
Sink & m_sink;
|
|
};
|