Function hexDecode

plugins/experimental/access_control/utils.cc:91–104

* @brief Decode from hexadecimal format into character counted string * * @param in ptr to an input counted string in hexadecimal format * @param inLen input character count * @param out ptr to a buffer to store the decoded counted string * @param outLen output character count (inLen/2) * @return the number of character actually added to the output buffer. */

 * @return the number of character actually added to the output buffer.
 */
size_t
hexDecode(const char *in, size_t inLen, char *out, size_t outLen)
{
  const char *src    = in;
  const char *srcEnd = in + inLen;
  char       *dst    = out;
  char       *dstEnd = out + outLen;

  while (src < (srcEnd - 1) && dst < dstEnd) {
    *dst++  = hex2uchar(*src) << 4 | hex2uchar(*(src + 1));
    src    += 2;
  }
  return dst - out;
}

/**
 * @brief URL(percent)-encode a counted string