Sha256: 10ec0c7511f80669ddd47fa096b1596cc5b6965720d084d2da4f1fb78eabc343
Contents?: true
Size: 1.46 KB
Versions: 5
Compression:
Stored size: 1.46 KB
Contents
-module(gruff).
-export([start/0, stop/0, plot/4]).
start() ->
spawn(fun() ->
register(gruff, self()),
process_flag(trap_exit, true),
Cmd = "ruby ./gruff_provider.rb",
Port = open_port({spawn, Cmd}, [{packet, 4}, use_stdio, exit_status, binary]),
port_loop(Port)
end).
stop() -> gruff ! stop.
plot(Name, Font, Data, Labels) ->
gruff ! {plot, self(), Name, Font, Data, Labels},
receive
{result, Bin} -> Bin
end.
send_data(_Port, []) -> ok;
send_data(Port, [{Name, Points}|Rest]) ->
Data = {data, Name, Points},
Port ! {self(), {command, term_to_binary(Data)}},
send_data(Port, Rest).
send_labels(Port, Labels) ->
Data = {labels, Labels},
Port ! {self(), {command, term_to_binary(Data)}}.
port_loop(Port) ->
receive
{plot, Caller, Name, Font, Data, Labels} ->
PlotData = term_to_binary({plot, Name, 'Line', Font}),
Port ! {self(), {command, PlotData}},
send_data(Port, Data),
send_labels(Port, Labels),
EndData = term_to_binary('end'),
Port ! {self(), {command, EndData}},
Result = get_result(Port),
Caller ! {result, Result },
port_loop(Port);
stop ->
Port ! {self(), close},
receive
{Port, closed} -> exit(normal)
end
end.
get_result(Port) ->
receive
{Port, {data, Data}} ->
{result, Bin} = binary_to_term(Data),
Bin;
{'EXIT', Port, Reason} ->
exit({port_terminated,Reason})
end.
Version data entries
5 entries across 5 versions & 3 rubygems