131 lines
2.9 KiB
C
131 lines
2.9 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
|
|
* Mes --- Maxwell Equations of Software
|
|
* Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
|
|
*
|
|
* This file is part of Mes.
|
|
*
|
|
* Mes is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 3 of the License, or (at
|
|
* your option) any later version.
|
|
*
|
|
* Mes is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with Mes. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <fcntl.h>
|
|
|
|
//MINI_MES
|
|
// SCM
|
|
// write_byte (SCM x) ///((arity . n))
|
|
// {
|
|
// SCM c = car (x);
|
|
// SCM p = cdr (x);
|
|
// int fd = 1;
|
|
// if (TYPE (p) == TPAIR && TYPE (car (p)) == TNUMBER) fd = VALUE (car (p));
|
|
// FILE *f = fd == 1 ? stdout : stderr;
|
|
// assert (TYPE (c) == TNUMBER || TYPE (c) == TCHAR);
|
|
// fputc (VALUE (c), f);
|
|
// return c;
|
|
// }
|
|
|
|
char const* string_to_cstring (SCM);
|
|
|
|
// SCM
|
|
// stderr_ (SCM x)
|
|
// {
|
|
// SCM write;
|
|
// if (TYPE (x) == TSTRING)
|
|
// fprintf (stderr, string_to_cstring (x));
|
|
// else if ((write = assq_ref_env (cell_symbol_write, r0)) != cell_undefined)
|
|
// apply (assq_ref_env (cell_symbol_display, r0), cons (x, cons (MAKE_NUMBER (2), cell_nil)), r0);
|
|
// else if (TYPE (x) == TSPECIAL || TYPE (x) == TSTRING || TYPE (x) == TSYMBOL)
|
|
// fprintf (stderr, string_to_cstring (x));
|
|
// else if (TYPE (x) == TNUMBER)
|
|
// fprintf (stderr, "%d", VALUE (x));
|
|
// else
|
|
// fprintf (stderr, "display: undefined\n");
|
|
// return cell_unspecified;
|
|
// }
|
|
|
|
SCM
|
|
getenv_ (SCM s) ///((name . "getenv"))
|
|
{
|
|
char *p = getenv (string_to_cstring (s));
|
|
return p ? MAKE_STRING (cstring_to_list (p)) : cell_f;
|
|
}
|
|
|
|
// MINI_MES
|
|
// int
|
|
// getchar ()
|
|
// {
|
|
// return getc (g_stdin);
|
|
// }
|
|
|
|
// int
|
|
// ungetchar (int c)
|
|
// {
|
|
// return ungetc (c, g_stdin);
|
|
// }
|
|
|
|
// int
|
|
// peekchar ()
|
|
// {
|
|
// int c = getchar ();
|
|
// ungetchar (c);
|
|
// return c;
|
|
// }
|
|
|
|
// SCM
|
|
// peek_byte ()
|
|
// {
|
|
// return MAKE_NUMBER (peekchar ());
|
|
// }
|
|
|
|
// SCM
|
|
// read_byte ()
|
|
// {
|
|
// return MAKE_NUMBER (getchar ());
|
|
// }
|
|
|
|
// SCM
|
|
// unread_byte (SCM i)
|
|
// {
|
|
// ungetchar (VALUE (i));
|
|
// return i;
|
|
// }
|
|
|
|
SCM
|
|
force_output (SCM p) ///((arity . n))
|
|
{
|
|
int fd = 1;
|
|
if (TYPE (p) == TPAIR && TYPE (car (p)) == TNUMBER) fd = VALUE (car (p));
|
|
FILE *f = fd == 1 ? stdout : stderr;
|
|
fflush (f);
|
|
return cell_unspecified;
|
|
}
|
|
|
|
SCM
|
|
open_input_file (SCM file_name)
|
|
{
|
|
return MAKE_NUMBER (open (string_to_cstring (file_name), O_RDONLY));
|
|
}
|
|
|
|
SCM
|
|
current_input_port ()
|
|
{
|
|
return MAKE_NUMBER (fileno (g_stdin));
|
|
}
|
|
|
|
SCM
|
|
set_current_input_port (SCM port)
|
|
{
|
|
g_stdin = VALUE (port) ? fdopen (VALUE (port), "r") : stdin;
|
|
return current_input_port ();
|
|
}
|