mirror of
https://github.com/Mercury-Language/mercury.git
synced 2026-04-29 16:24:43 +00:00
d36d42b4de
Contributed by Volker Wysk.
extras/posix/posix.chdir.m
extras/posix/posix.sleep.m:
As above.
50 lines
1.5 KiB
Mathematica
50 lines
1.5 KiB
Mathematica
%----------------------------------------------------------------------------%
|
|
% vim: ft=mercury ts=4 sw=4 et
|
|
%----------------------------------------------------------------------------%
|
|
% Copyright (C) 2020 The Mercury team.
|
|
% This file is distributed under the terms specified in COPYING.LIB.
|
|
%----------------------------------------------------------------------------%
|
|
%
|
|
% Module: posix.chdir.m
|
|
% Main author: Volker Wysk <post@volker-wysk.de>
|
|
%
|
|
%----------------------------------------------------------------------------%
|
|
|
|
:- module posix.chdir.
|
|
:- interface.
|
|
|
|
:- import_module io.
|
|
:- import_module string.
|
|
|
|
% Change the working directory. See chdir(2).
|
|
%
|
|
:- pred chdir(string::in, posix.result::out, io::di, io::uo) is det.
|
|
|
|
%----------------------------------------------------------------------------%
|
|
%----------------------------------------------------------------------------%
|
|
|
|
:- implementation.
|
|
|
|
chdir(Path, Res, !IO) :-
|
|
chdir0(Path, Res0, !IO),
|
|
( if Res0 \= 0 then
|
|
errno(Errno, !IO),
|
|
Res = error(Errno)
|
|
else
|
|
Res = ok
|
|
).
|
|
|
|
:- pragma foreign_decl("C", "#include <unistd.h>").
|
|
|
|
:- pred chdir0(string::in, int::out, io::di, io::uo) is det.
|
|
:- pragma foreign_proc("C",
|
|
chdir0(Path::in, Res0::out, _IO0::di, _IO::uo),
|
|
[promise_pure, will_not_call_mercury, thread_safe, tabled_for_io],
|
|
"
|
|
Res0 = chdir(Path);
|
|
").
|
|
|
|
%----------------------------------------------------------------------------%
|
|
:- end_module posix.chdir.
|
|
%----------------------------------------------------------------------------%
|