Method charpos

sql/sql_string.h:1135–1140

    return (uint32) Charset::numchars(ptr(), end());
  }
  int charpos(longlong i, uint32 offset=0)
  {
    if (i <= 0)
      return (int) i;
    return (int) Charset::charpos(ptr() + offset, end(), (size_t) i);
  }
  size_t lengthsp() const
  {
    return Charset::lengthsp(Ptr, str_length);