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// 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);
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