Function to_hex_string

dali/operators/decoder/numpy.cc:24–34

namespace dali {

std::string to_hex_string(const std::string_view data) {
  std::string hex;
  hex.reserve(2 + data.size() * 2);
  hex += "0x";
  const auto lut = "0123456789abcdef";
  for (unsigned char c : data) {
    hex += lut[c >> 4];
    hex += lut[c & 0x0F];
  }
  return hex;
}

numpy::HeaderData ParseHeader(const std::string_view data) {
  const auto numpy_magic = "\x93NUMPY";