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Branches: main
This patch adds support for a number of POSIX system calls:
- opendir, readdir, closedir, mkdir, rmdir
- fork, exec, wait
- dup
56 lines
1.5 KiB
Mathematica
56 lines
1.5 KiB
Mathematica
%------------------------------------------------------------------------------%
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% Copyright (C) 2001 The University of Melbourne.
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% This file may only be copied under the terms of the GNU Library General
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% Public License - see the file COPYING.LIB in the Mercury distribution.
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%------------------------------------------------------------------------------%
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%
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% module: posix__readdir.m
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% main author: Michael Day <miked@lendtech.com.au>
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%
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%------------------------------------------------------------------------------%
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:- module posix__readdir.
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:- interface.
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:- import_module io, string.
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:- pred readdir(dir, posix__result(string), io__state, io__state).
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:- mode readdir(in, out, di, uo) is det.
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%------------------------------------------------------------------------------%
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:- implementation.
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:- pragma c_header_code("
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#include <sys/types.h>
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#include <dirent.h>
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").
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readdir(Dir, Result) -->
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readdir0(Dir, Entry, Res),
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( if { Res = 0 } then
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{ Result = ok(Entry) }
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else
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errno(Err),
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{ Result = error(Err) }
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).
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:- pred readdir0(dir, string, int, io__state, io__state).
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:- mode readdir0(in, out, out, di, uo) is det.
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:- pragma c_code(readdir0(Dir::in, Entry::out, Result::out, IO0::di, IO::uo),
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[will_not_call_mercury, thread_safe], "
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struct dirent *ent = readdir((DIR *)Dir);
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if (ent != NULL) {
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MR_make_aligned_string_copy(Entry, ent->d_name);
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Result = 0;
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} else {
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Entry = NULL;
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Result = 1;
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}
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IO = IO0;
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").
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%------------------------------------------------------------------------------%
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