readByte()
  }
  return count
}

/**
 * Returns the index of the next non-whitespace character in this. Result is undefined if input
 * contains newline characters.
 */
internal fun String.indexOfNonWhitespace(startIndex: Int = 0): Int {
  for (i in startIndex until length) {
    val c = this[i]
    if (c != ' ' && c != '\t') {
      return i
    }
  }
  return length
}