Attr Value Description name atom or associated filename, or contents string in case of a string or queue device file, null, the device behind the stream pipe, queue, socket, tty, string mode read, write, the stream's direction update physical_stream integer associated stream number aliases integer current number of symbolic names system_use on, off a system stream is currently redirected to this stream line integer current line number (input streams only) offset integer current position in the stream, as given by at/2 prompt string prompt string (input streams only) prompt_stream integer output stream for the prompt (input streams only) fd integer the associated UNIX file descriptor port integer port number associated with an internet socket connection atom identification of the connected socket - file name for unix sockets, host name for internet ones end_of_line cr, crlf which end-of-line sequence to write flush flush, explicit or implicit flushing end_of_line event atom event on writing to empty stream (see open/4) yield on, off yield on end-of-file (see open/4)
Success: [eclipse]: get_stream_info(input,X,Y), writeln(X is Y), fail. name is user physical_stream is 0 aliases is 2 system_use is on line is 1 offset is 0 prompt is prompt_stream is 1 fd is 0 reprompt_only is off device is tty mode is read no (more) solution. [eclipse]: get_stream_info(toplevel_input, prompt, P). P = "\t" yes. Fail: get_stream_info(output, prompt, P). get_stream_info(output, system_use, off). Error: get_stream_info(X, Y, Z). (Error 4) get_stream_info(file(f), Y, Z). (Error 5) get_stream_info(output, 7, X). (Error 5) get_stream_info(output, offset, 8.5). (Error 5) get_stream_info(output, length, Z). (Error 5) get_stream_info(nostream, Y, Z). (Error 193)