// Copyright (c) 2009-2010 Satoshi Nakamoto // Copyright (c) 2009-2020 The Bitcoin Core developers // Distributed under the MIT software license, see the accompanying // file COPYING or http://www.opensource.org/licenses/mit-license.php. #include <uint256.h> #include <util/strencodings.h> template <unsigned int BITS> std::string base_blob<BITS>::GetHex() const { uint8_t m_data_rev[WIDTH]; for (int i = 0; i < WIDTH; ++i) { m_data_rev[i] = m_data[WIDTH - 1 - i]; } return HexStr(m_data_rev); } template <unsigned int BITS> void base_blob<BITS>::SetHexDeprecated(const std::string_view str) { std::fill(m_data.begin(), m_data.end(), 0); const auto trimmed = util::RemovePrefixView(util::TrimStringView(str), "0x"); // Note: if we are passed a greater number of digits than would fit as bytes // in m_data, we will be discarding the leftmost ones. // str="12bc" in a WIDTH=1 m_data => m_data[] == "\0xbc", not "0x12". size_t digits = 0; for (const char c : trimmed) { if (::HexDigit(c) == -1) break; ++digits; } unsigned char* p1 = m_data.data(); unsigned char* pend = p1 + WIDTH; while (digits > 0 && p1 < pend) { *p1 = ::HexDigit(trimmed[--digits]); if (digits > 0) { *p1 |= ((unsigned char)::HexDigit(trimmed[--digits]) << 4); p1++; } } } template <unsigned int BITS> std::string base_blob<BITS>::ToString() const { return (GetHex()); } // Explicit instantiations for base_blob<160> template std::string base_blob<160>::GetHex() const; template std::string base_blob<160>::ToString() const; template void base_blob<160>::SetHexDeprecated(std::string_view); // Explicit instantiations for base_blob<256> template std::string base_blob<256>::GetHex() const; template std::string base_blob<256>::ToString() const; template void base_blob<256>::SetHexDeprecated(std::string_view); const uint256 uint256::ZERO(0); const uint256 uint256::ONE(1);