hex.hpp File Reference

Detailed Description

Encoders, decoders and helpers for hexadecimal representations.

Definition in file hex.hpp.

Go to the source code of this file.

#include <cstdint>
#include <string>
#include <userver/utils/span.hpp>

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Namespaces
namespace	utils
	General-purpose utilities used across userver libraries.
namespace	utils::encoding
	Encoders/decoders: TSKV, hex, and related parsers.

Functions
char	utils::encoding::ToHexChar (int num)
	Converts number to hex character; number must be within range [0,16)
constexpr size_t	utils::encoding::FromHexUpperBound (size_t size) noexcept
	Return upper limit on number of characters required to unhex input of given size.
void	utils::encoding::ToHex (std::string_view input, std::string &out) noexcept
	Converts input to hex and writes data to output out.
void	utils::encoding::ToHexBuffer (std::string_view input, utils::span< char > out) noexcept
	Converts input to hex and writes data to output out.
std::string	utils::encoding::ToHex (std::string_view data) noexcept
	Allocates std::string, converts input and writes into said string.
std::string	utils::encoding::ToHex (const void *encoded, size_t len) noexcept
	Allocates std::string, converts input and writes into said string.
size_t	utils::encoding::FromHex (std::string_view encoded, std::string &out) noexcept
	Converts as much of input from hex as possible and writes data into out.
std::string	utils::encoding::FromHex (std::string_view encoded) noexcept
	This FromHex overload allocates string and calls FromHex; if data is not fully a hex string, then it will be only partially processed.
std::string_view	utils::encoding::GetHexPart (std::string_view encoded) noexcept
bool	utils::encoding::IsHexData (std::string_view encoded) noexcept
	Checks that given range is fully a hex string. That is, if passed to FromHex, it will be fully processed.
std::string	utils::encoding::ToHexString (uint64_t value)
	Interprets uint64_t value as array of bytes and applies ToHex to it.
constexpr size_t	utils::encoding::LengthInHexForm (size_t size) noexcept
	Calculate expected length of input after being hex encoded.
constexpr size_t	utils::encoding::LengthInHexForm (std::string_view data) noexcept