1 files changed, 32 insertions, 0 deletions
diff --git a/stdlib.pl b/stdlib.pl
index 4973c3e..7a744c4 100644
--- a/stdlib.pl
+++ b/stdlib.pl
@@ -105,3 +105,35 @@ resource_error(Resource) :-
 
 syntax_error(Error) :-
 	throw(error(syntax_error(Error), _)).
+
+% Input and output
+
+read_term(Term, Options) :-
+	current_input(S),
+	read_term(S, Term, Options).
+
+read(Term) :-
+	current_input(S),
+	read_term(S, Term, []).
+
+write_term(Term, Options) :-
+	current_output(S),
+	write_term(S, Term, Options).
+
+write(Term) :-
+	current_output(S),
+	write_term(S, Term, [numbervars(true)]).
+
+writeq(Term) :-
+	current_output(S),
+	write_term(S, Term, [quoted(true), numbervars(true)]).
+
+writeq(S, Term) :-
+	write_term(S, Term, [quoted(true), numbervars(true)]).
+
+write_canonical(Term) :-
+	current_output(S),
+	write_term(S, Term, [quoted(true), ignore_ops(true)]).
+
+write_canonical(S, Term) :-
+	write_term(S, Term, [quoted(true), ignore_ops(true)]).