100 lines
3.8 KiB
C++
100 lines
3.8 KiB
C++
// Copyright (c) 2017-2020, The Monero Project
|
|
//
|
|
// All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without modification, are
|
|
// permitted provided that the following conditions are met:
|
|
//
|
|
// 1. Redistributions of source code must retain the above copyright notice, this list of
|
|
// conditions and the following disclaimer.
|
|
//
|
|
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
|
|
// of conditions and the following disclaimer in the documentation and/or other
|
|
// materials provided with the distribution.
|
|
//
|
|
// 3. Neither the name of the copyright holder nor the names of its contributors may be
|
|
// used to endorse or promote products derived from this software without specific
|
|
// prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
|
|
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
|
|
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
|
|
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
#pragma once
|
|
|
|
#include <array>
|
|
#include <cstdint>
|
|
#include <iosfwd>
|
|
#include <string>
|
|
#include <boost/utility/string_ref.hpp>
|
|
|
|
#include "wipeable_string.h"
|
|
#include "span.h"
|
|
|
|
namespace epee
|
|
{
|
|
struct to_hex
|
|
{
|
|
//! \return A std::string containing hex of `src`.
|
|
static std::string string(const span<const std::uint8_t> src);
|
|
//! \return A epee::wipeable_string containing hex of `src`.
|
|
static epee::wipeable_string wipeable_string(const span<const std::uint8_t> src);
|
|
template<typename T> static epee::wipeable_string wipeable_string(const T &pod) { return wipeable_string(span<const uint8_t>((const uint8_t*)&pod, sizeof(pod))); }
|
|
|
|
//! \return An array containing hex of `src`.
|
|
template<std::size_t N>
|
|
static std::array<char, N * 2> array(const std::array<std::uint8_t, N>& src) noexcept
|
|
{
|
|
std::array<char, N * 2> out;
|
|
static_assert(N <= 128, "keep the stack size down");
|
|
buffer_unchecked(out.data(), {src.data(), src.size()});
|
|
return out;
|
|
}
|
|
|
|
//! \return An array containing hex of `src`.
|
|
template<typename T>
|
|
static std::array<char, sizeof(T) * 2> array(const T& src) noexcept
|
|
{
|
|
std::array<char, sizeof(T) * 2> out;
|
|
static_assert(sizeof(T) <= 128, "keep the stack size down");
|
|
buffer_unchecked(out.data(), as_byte_span(src));
|
|
return out;
|
|
}
|
|
|
|
//! Append `src` as hex to `out`.
|
|
static void buffer(std::ostream& out, const span<const std::uint8_t> src);
|
|
|
|
//! Append `< + src + >` as hex to `out`.
|
|
static void formatted(std::ostream& out, const span<const std::uint8_t> src);
|
|
|
|
private:
|
|
template<typename T> T static convert(const span<const std::uint8_t> src);
|
|
|
|
//! Write `src` bytes as hex to `out`. `out` must be twice the length
|
|
static void buffer_unchecked(char* out, const span<const std::uint8_t> src) noexcept;
|
|
};
|
|
|
|
//! Convert hex in UTF8 encoding to binary
|
|
struct from_hex
|
|
{
|
|
static bool to_string(std::string& out, boost::string_ref src);
|
|
|
|
static bool to_buffer(span<std::uint8_t> out, boost::string_ref src) noexcept;
|
|
|
|
private:
|
|
static bool to_buffer_unchecked(std::uint8_t* out, boost::string_ref src) noexcept;
|
|
};
|
|
|
|
//! Convert hex in current C locale encoding to binary
|
|
struct from_hex_locale
|
|
{
|
|
static std::vector<uint8_t> to_vector(boost::string_ref src);
|
|
};
|
|
}
|