This library is intended for supporting PrologScript on Unix using
the
#!
magic sequence for scripts using commandline options.
The entry point main/0 calls
the user-supplied predicate main/1 passing
a list of commandline options. Below is `echo' in Prolog (adjust
/usr/bin/swipl to where SWI-Prolog is installed)
#!/usr/bin/env swipl :- initialization(main, main). main(Argv) :- echo(Argv). echo([]) :- nl. echo([Last]) :- !, write(Last), nl. echo([H|T]) :- write(H), write(' '), echo(T).
SIGINT
(Control-C) that terminates the process
with status 1.no-
, in which case the
option is mapped to Name(false). Numeric option values are mapped to
Prolog numbers.