30743ce141
* scaffold/mini-mes.c (lookup_): Remove. * mes.c: Likewise. * reader.c (lookup_): Enable. * mlib.c (putc): New function. * module/mes/libc.mes (putc): New function.
135 lines
2.5 KiB
C
135 lines
2.5 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/>.
|
|
*/
|
|
|
|
#if !MINI_MES
|
|
#include <fcntl.h>
|
|
|
|
FILE *g_stdin;
|
|
int
|
|
getchar ()
|
|
{
|
|
return getc (g_stdin);
|
|
}
|
|
#endif
|
|
|
|
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
|
|
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));
|
|
#if !MES_MINI
|
|
FILE *f = fd == 1 ? stdout : stderr;
|
|
fputc (VALUE (c), f);
|
|
#else
|
|
char cc = VALUE (c);
|
|
write (1, (char*)&cc, fd);
|
|
#endif
|
|
#if __GNUC__
|
|
assert (TYPE (c) == TNUMBER || TYPE (c) == TCHAR);
|
|
#endif
|
|
return c;
|
|
}
|
|
|
|
char const*
|
|
string_to_cstring (SCM s)
|
|
{
|
|
static char buf[1024];
|
|
char *p = buf;
|
|
s = STRING(s);
|
|
while (s != cell_nil)
|
|
{
|
|
*p++ = VALUE (car (s));
|
|
s = cdr (s);
|
|
}
|
|
*p = 0;
|
|
return buf;
|
|
}
|
|
|
|
SCM
|
|
getenv_ (SCM s) ///((name . "getenv"))
|
|
{
|
|
char *p = getenv (string_to_cstring (s));
|
|
return p ? MAKE_STRING (cstring_to_list (p)) : cell_f;
|
|
}
|
|
|
|
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 ();
|
|
}
|
|
|
|
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;
|
|
}
|