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:- consult(pce_file_search_path).
:- consult(library(pce)).
:- consult(library(process)).
:- pce_global(@dialog, new(dialog('Save'))).
main :-
pce_main_loop(main).
main(_Argv) :-
init.
init :-
shell("git add .", Status),
added(Status).
added(1) :-
send(@display, report, error,
'Files could not be added to index.
Ensure Git is in PATH.').
added(0) :-
%send(@pce, load_defaults, 'Defaults'),
new(D, @dialog),
% File browser.
new(C, chain),
status(C),
send(new(B, browser), right, D),
send(B, members(C)),
% Input fields.
send(D, append, text('Commit message (optional):',
left,
bold)),
send(D, append, new(E, editor)),
send(D, append, button(save,
message(@prolog, save, E, C))),
send(D, append, button(cancel,
and(message(@prolog, reset),
message(D, destroy)))),
send(D, open).
reset :-
shell("git reset").
status(C) :-
setup_call_cleanup(
process_create(path(git), ['status', '--porcelain'],
[stdout(pipe(Out))]),
read_to_chain(Out, C),
close(Out)).
read_to_chain(S, C) :-
read_line_to_codes(S, Cs),
( Cs == end_of_file
-> true
; atom_codes(A, Cs),
send(C, append, A),
read_to_chain(S, C)
).
save(Editor, Chain) :-
get(Editor?text_buffer, contents, S),
send(S, strip),
get(S, value, Msg),
( Msg == ''
-> chain_atom(Chain, A),
commit(A)
; commit(Msg)
).
chain_atom(C, A) :-
chain_atom_x(C, '', A).
chain_atom_x(C, A0, A) :-
( get(C, delete_head, A1)
-> atom_concat(A0, A1, A2),
atom_concat(A2, '
', A3),
chain_atom_x(C, A3, A)
; A = A0
).
commit(Msg) :-
process_create(path(git), ['commit', '-m', Msg],
[process(PID)]),
process_wait(PID, S),
commited(S).
commited(S) :-
dif(S, exit(0)),
dif(S, exit(128)),
!,
send(@display, report, error,
'Files could not be saved.').
commited(_) :-
send(@dialog, destroy).
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