system.h

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#pragma once
 
#include <bit>
#include <limits>
#include <algorithm>
#include <type_traits>
#include <cstdint>
#include <promeki/core/namespace.h>
#include <promeki/core/string.h>
 
PROMEKI_NAMESPACE_BEGIN
 
class String;
 
class System {
        public:
                static String hostname();
 
                static constexpr bool isLittleEndian() {
                        return std::endian::native == std::endian::little;
                }
 
                static constexpr bool isBigEndian() {
                        return std::endian::native == std::endian::big;
                }
 
                template<typename T> static void swapEndian(T &value) {
                        static_assert(std::is_arithmetic<T>::value, "swab() requires an arithmetic type");
                        constexpr size_t size = sizeof(T);
                        if constexpr (size == 1) return;
                        unsigned char *data = reinterpret_cast<unsigned char*>(&value);
                        #pragma unroll
                        for (size_t i = 0; i < size / 2; ++i) {
                                std::swap(data[i], data[size - i - 1]);
                        }
                        return;
                }
 
                template<typename T, bool ValueIsBigEndian> static void makeNativeEndian(T &value) {
                        if constexpr (ValueIsBigEndian && isBigEndian()) return;
                        swab(value);
                        return;
                }
 
                static String demangleSymbol(const char *symbol, bool useCache = true);
};
 
PROMEKI_NAMESPACE_END