hex_base.h raw

   1  // Copyright (c) 2009-present The Bitcoin Core developers
   2  // Distributed under the MIT software license, see the accompanying
   3  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   4  
   5  #ifndef BITCOIN_CRYPTO_HEX_BASE_H
   6  #define BITCOIN_CRYPTO_HEX_BASE_H
   7  
   8  #include <span.h>
   9  
  10  #include <cstddef>
  11  #include <cstdint>
  12  #include <span>
  13  #include <string>
  14  
  15  /**
  16   * Convert a span of bytes to a lower-case hexadecimal string.
  17   */
  18  std::string HexStr(std::span<const uint8_t> s);
  19  inline std::string HexStr(std::span<const char> s) { return HexStr(MakeUCharSpan(s)); }
  20  inline std::string HexStr(std::span<const std::byte> s) { return HexStr(MakeUCharSpan(s)); }
  21  
  22  signed char HexDigit(char c);
  23  
  24  #endif // BITCOIN_CRYPTO_HEX_BASE_H
  25