lokinet/llarp/encode.cpp

#include <llarp/encode.hpp>
#include <stdexcept>

namespace llarp
{
  int
  char2int(char input)
  {
    if(input >= '0' && input <= '9')
      return input - '0';
    if(input >= 'A' && input <= 'F')
      return input - 'A' + 10;
    if(input >= 'a' && input <= 'f')
      return input - 'a' + 10;
    throw std::invalid_argument("Invalid input string");
  }

  void
  HexDecode(const char* src, uint8_t* target)
  {
    while(*src && src[1])
    {
      *(target++) = char2int(*src) * 16 + char2int(src[1]);
      src += 2;
    }
  }
}