AZ_NODISCARD static az_result _az_json_token_get_string_helper()

in sdk/src/azure/core/az_json_token.c [277:326]

• 43 lines of code
• 8 McCabe index (conditional complexity)

AZ_NODISCARD static az_result _az_json_token_get_string_helper(
    az_span source,
    char* destination,
    int32_t destination_max_size,
    int32_t* dest_idx,
    bool* next_char_escaped)
{
  int32_t source_size = az_span_size(source);
  uint8_t* source_ptr = az_span_ptr(source);
  for (int32_t i = 0; i < source_size; i++)
  {
    if (*dest_idx >= destination_max_size)
    {
      return AZ_ERROR_NOT_ENOUGH_SPACE;
    }
    uint8_t token_byte = source_ptr[i];

    if (token_byte == '\\' || *next_char_escaped)
    {
      if (*next_char_escaped)
      {
        token_byte = _az_json_unescape_single_byte(token_byte);
      }
      else
      {
        i++;
        if (i >= source_size)
        {
          *next_char_escaped = true;
          break;
        }
        token_byte = _az_json_unescape_single_byte(source_ptr[i]);
      }
      *next_char_escaped = false;

      // TODO: Characters escaped in the form of \uXXXX where XXXX is the UTF-16 code point, is
      // not currently supported.
      // To do this, we need to encode UTF-16 codepoints (including surrogate pairs) into UTF-8.
      if (token_byte == 'u')
      {
        return AZ_ERROR_NOT_IMPLEMENTED;
      }
    }

    destination[*dest_idx] = (char)token_byte;
    *dest_idx = *dest_idx + 1;
  }

  return AZ_OK;
}