// SPDX-FileCopyrightText: 2013 Dolphin Emulator Project // SPDX-FileCopyrightText: 2014 Citra Emulator Project // SPDX-License-Identifier: GPL-2.0-or-later #pragma once #include <array> #include <cstddef> #include <string> #include <vector> #include <fmt/format.h> #include "common/common_types.h" namespace Common { [[nodiscard]] constexpr u8 ToHexNibble(char c) { if (c >= 65 && c <= 70) { return static_cast<u8>(c - 55); } if (c >= 97 && c <= 102) { return static_cast<u8>(c - 87); } return static_cast<u8>(c - 48); } [[nodiscard]] std::vector<u8> HexStringToVector(std::string_view str, bool little_endian); template <std::size_t Size, bool le = false> [[nodiscard]] constexpr std::array<u8, Size> HexStringToArray(std::string_view str) { std::array<u8, Size> out{}; if constexpr (le) { for (std::size_t i = 2 * Size - 2; i <= 2 * Size; i -= 2) { out[i / 2] = static_cast<u8>((ToHexNibble(str[i]) << 4) | ToHexNibble(str[i + 1])); } } else { for (std::size_t i = 0; i < 2 * Size; i += 2) { out[i / 2] = static_cast<u8>((ToHexNibble(str[i]) << 4) | ToHexNibble(str[i + 1])); } } return out; } template <typename ContiguousContainer> [[nodiscard]] std::string HexToString(const ContiguousContainer& data, bool upper = true) { static_assert(std::is_same_v<typename ContiguousContainer::value_type, u8>, "Underlying type within the contiguous container must be u8."); constexpr std::size_t pad_width = 2; std::string out; out.reserve(std::size(data) * pad_width); const auto format_str = fmt::runtime(upper ? "{:02X}" : "{:02x}"); for (const u8 c : data) { out += fmt::format(format_str, c); } return out; } [[nodiscard]] constexpr std::array<u8, 16> AsArray(const char (&data)[33]) { return HexStringToArray<16>(data); } [[nodiscard]] constexpr std::array<u8, 32> AsArray(const char (&data)[65]) { return HexStringToArray<32>(data); } } // namespace Common