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fix exec streams 

git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@289 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
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vsc 2002-01-10 23:54:06 +00:00
parent 6deb31e058
commit 2d51021df7
1 changed files with 12 additions and 6 deletions
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18
library/system.yap
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@ -243,29 +243,35 @@ process_inp_stream_for_exec(Error, _, G, L, L) :- var(Error), !,
throw(error(instantiation_error,G)).
process_inp_stream_for_exec(null, null, _, L, L) :- !.
process_inp_stream_for_exec(std, 0, _, L, L) :- !.
process_inp_stream_for_exec(pipe(ForWriting), ForReading, _, L, [ForReading|L]) :- !,
process_inp_stream_for_exec(pipe(ForWriting), ForReading, _, L, [ForReading|L]) :- var(ForWriting), !,
open_pipe_streams(ForReading, ForWriting).
process_inp_stream_for_exec(pipe(Stream), _, _, L, L) :- !,
stream_property(Stream, output).
process_inp_stream_for_exec(Stream, Stream, _, L, L) :-
stream_property(Stream, input).
stream_property(Stream, output).
process_out_stream_for_exec(Error, _, G, L, L) :- var(Error), !,
throw(error(instantiation_error,G)).
process_out_stream_for_exec(null, null, _, L, L) :- !.
process_out_stream_for_exec(std, 1, _, L, L) :- !.
process_out_stream_for_exec(pipe(ForReading), ForWriting, _, L, [ForWriting|L]) :- !,
process_out_stream_for_exec(pipe(ForReading), ForWriting, _, L, [ForWriting|L]) :- var(ForReading), !,
open_pipe_streams(ForReading, ForWriting).
process_out_stream_for_exec(pipe(Stream), _, _, L, L) :- !,
stream_property(Stream, input).
process_out_stream_for_exec(Stream, Stream, _, L, L) :-
stream_property(Stream, output).
stream_property(Stream, input).
process_err_stream_for_exec(Error, _, G, L, L) :- var(Error), !,
throw(error(instantiation_error,G)).
process_err_stream_for_exec(null, null, _, L, L) :- !.
process_err_stream_for_exec(std, 2, _, L, L) :- !.
process_err_stream_for_exec(pipe(ForReading), ForWriting, _, L, [ForWriting|L]) :- !,
process_err_stream_for_exec(pipe(ForReading), ForWriting, _, L, [ForWriting|L]) :- var(ForReading), !,
open_pipe_streams(ForReading, ForWriting).
process_err_stream_for_exec(pipe(Stream), Stream, _, L, L) :- !,
stream_property(Stream, input).
process_err_stream_for_exec(Stream, Stream, _, L, L) :-
stream_property(Stream, output).
stream_property(Stream, input).
close_temp_streams([]).
close_temp_streams([S|Ss]) :- close(S),