public Caps? type_find_helper_for_buffer (Object? obj, Buffer buf, out TypeFindProbability prob)
Tries to find what type of data is contained in the given Buffer, the assumption being that the buffer represents the beginning of the stream or file.
All available typefinders will be called on the data in order of rank. If a typefinding function returns a probability of
MAXIMUM, typefinding is stopped immediately and the found
caps will be returned right away. Otherwise, all available typefind functions will the tried, and the caps with the highest probability will be
null if the content of the buffer could not be identified.
object doing the typefinding, or
a Buffer with data to typefind
location to store the probability of the found caps, or
the Caps corresponding to the data, or