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mescc: Mes C Library: Fix isatty.

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* lib/posix/isatty.c (isatty): Test ioctl == 0.
* mes/module/mes/boot-0.scm.in: Update: no tty?: read from stdin.
This commit is contained in:
Jan Nieuwenhuizen 2019-03-02 22:27:39 +01:00
parent d93b19f41f
commit c5e098bc35
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GPG key ID: F3C1A0D9C1D65273
2 changed files with 53 additions and 5 deletions
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56
lib/posix/isatty.c
View file

@ -1,6 +1,6 @@
/* -*-comment-start: "//";comment-end:""-*-
* GNU Mes --- Maxwell Equations of Software
* Copyright © 2016,2017,2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
* Copyright © 2016,2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
*
* This file is part of GNU Mes.
*
@ -20,8 +20,56 @@
#include <unistd.h>
int
isatty (int fd)
typedef unsigned char cc_t;
typedef unsigned int speed_t;
typedef unsigned int tcflag_t;
// Use termio, termios2?
#define NCCS 19
struct termios
{
return ioctl (fd, TCGETS, 0) & 0xf0;
tcflag_t c_iflag;
tcflag_t c_oflag;
tcflag_t c_cflag;
tcflag_t c_lflag;
cc_t c_line;
cc_t c_cc[NCCS];
};
struct ktermios
{
tcflag_t c_iflag;
tcflag_t c_oflag;
tcflag_t c_cflag;
tcflag_t c_lflag;
cc_t c_line;
cc_t c_cc[NCCS];
speed_t c_ispeed;
speed_t c_ospeed;
};
int
__tcgetattr (int filedes, struct termios *termios_p)
{
struct ktermios kernel_termios;
int r = ioctl (filedes, TCGETS, &kernel_termios);
termios_p->c_iflag = kernel_termios.c_iflag;
termios_p->c_oflag = kernel_termios.c_oflag;
termios_p->c_cflag = kernel_termios.c_cflag;
termios_p->c_lflag = kernel_termios.c_lflag;
termios_p->c_line = kernel_termios.c_line;
#if 0
termios_p->c_ispeed = kernel_termios.c_ispeed;
termios_p->c_ospeed = kernel_termios.c_ospeed;
#endif
memcpy (&termios_p->c_cc[0], &kernel_termios.c_cc[0], NCCS * sizeof (cc_t));
return r;
}
int
isatty (int filedes)
{
struct termios term;
return __tcgetattr (filedes, &term) == 0;
}

2
mes/module/mes/boot-0.scm.in
View file

@ -234,7 +234,7 @@
(files (if s-index (list-tail %argv (+ s-index 1))
(option-ref options '() '())))
(help? (option-ref options 'help #f))
(usage? (and (not help?) (null? files) (not tty?) (not main)))
(usage? #f)
(version? (option-ref options 'version #f)))
(or
(and version?