883 lines
20 KiB
C
883 lines
20 KiB
C
/* rltty.c -- functions to prepare and restore the terminal for readline's
|
||
use. */
|
||
|
||
/* Copyright (C) 1992 Free Software Foundation, Inc.
|
||
|
||
This file is part of the GNU Readline Library, a library for
|
||
reading lines of text with interactive input and history editing.
|
||
|
||
The GNU Readline Library 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 2, or
|
||
(at your option) any later version.
|
||
|
||
The GNU Readline Library 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.
|
||
|
||
The GNU General Public License is often shipped with GNU software, and
|
||
is generally kept in a file called COPYING or LICENSE. If you do not
|
||
have a copy of the license, write to the Free Software Foundation,
|
||
59 Temple Place, Suite 330, Boston, MA 02111 USA. */
|
||
#define READLINE_LIBRARY
|
||
|
||
#if defined (HAVE_CONFIG_H)
|
||
# include <config.h>
|
||
#endif
|
||
|
||
#include <sys/types.h>
|
||
#include <signal.h>
|
||
#include <errno.h>
|
||
#include <stdio.h>
|
||
|
||
#if defined (HAVE_UNISTD_H)
|
||
# include <unistd.h>
|
||
#endif /* HAVE_UNISTD_H */
|
||
|
||
#include "rldefs.h"
|
||
|
||
#if defined (GWINSZ_IN_SYS_IOCTL)
|
||
# include <sys/ioctl.h>
|
||
#endif /* GWINSZ_IN_SYS_IOCTL */
|
||
|
||
#include "rltty.h"
|
||
#include "readline.h"
|
||
#include "rlprivate.h"
|
||
|
||
#if !defined (errno)
|
||
extern int errno;
|
||
#endif /* !errno */
|
||
|
||
rl_vintfunc_t *rl_prep_term_function = rl_prep_terminal;
|
||
rl_voidfunc_t *rl_deprep_term_function = rl_deprep_terminal;
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Signal Management */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
#if defined (HAVE_POSIX_SIGNALS)
|
||
static sigset_t sigint_set, sigint_oset;
|
||
#else /* !HAVE_POSIX_SIGNALS */
|
||
# if defined (HAVE_BSD_SIGNALS)
|
||
static int sigint_oldmask;
|
||
# endif /* HAVE_BSD_SIGNALS */
|
||
#endif /* !HAVE_POSIX_SIGNALS */
|
||
|
||
static int sigint_blocked;
|
||
|
||
/* Cause SIGINT to not be delivered until the corresponding call to
|
||
release_sigint(). */
|
||
static void
|
||
block_sigint ()
|
||
{
|
||
if (sigint_blocked)
|
||
return;
|
||
|
||
#if defined (HAVE_POSIX_SIGNALS)
|
||
sigemptyset (&sigint_set);
|
||
sigemptyset (&sigint_oset);
|
||
sigaddset (&sigint_set, SIGINT);
|
||
sigprocmask (SIG_BLOCK, &sigint_set, &sigint_oset);
|
||
#else /* !HAVE_POSIX_SIGNALS */
|
||
# if defined (HAVE_BSD_SIGNALS)
|
||
sigint_oldmask = sigblock (sigmask (SIGINT));
|
||
# else /* !HAVE_BSD_SIGNALS */
|
||
# if defined (HAVE_USG_SIGHOLD)
|
||
sighold (SIGINT);
|
||
# endif /* HAVE_USG_SIGHOLD */
|
||
# endif /* !HAVE_BSD_SIGNALS */
|
||
#endif /* !HAVE_POSIX_SIGNALS */
|
||
|
||
sigint_blocked = 1;
|
||
}
|
||
|
||
/* Allow SIGINT to be delivered. */
|
||
static void
|
||
release_sigint ()
|
||
{
|
||
if (sigint_blocked == 0)
|
||
return;
|
||
|
||
#if defined (HAVE_POSIX_SIGNALS)
|
||
sigprocmask (SIG_SETMASK, &sigint_oset, (sigset_t *)NULL);
|
||
#else
|
||
# if defined (HAVE_BSD_SIGNALS)
|
||
sigsetmask (sigint_oldmask);
|
||
# else /* !HAVE_BSD_SIGNALS */
|
||
# if defined (HAVE_USG_SIGHOLD)
|
||
sigrelse (SIGINT);
|
||
# endif /* HAVE_USG_SIGHOLD */
|
||
# endif /* !HAVE_BSD_SIGNALS */
|
||
#endif /* !HAVE_POSIX_SIGNALS */
|
||
|
||
sigint_blocked = 0;
|
||
}
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Saving and Restoring the TTY */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* Non-zero means that the terminal is in a prepped state. */
|
||
static int terminal_prepped;
|
||
|
||
static _RL_TTY_CHARS _rl_tty_chars, _rl_last_tty_chars;
|
||
|
||
/* If non-zero, means that this process has called tcflow(fd, TCOOFF)
|
||
and output is suspended. */
|
||
#if defined (__ksr1__)
|
||
static int ksrflow;
|
||
#endif
|
||
|
||
/* Dummy call to force a backgrounded readline to stop before it tries
|
||
to get the tty settings. */
|
||
static void
|
||
set_winsize (tty)
|
||
int tty;
|
||
{
|
||
#if defined (TIOCGWINSZ)
|
||
struct winsize w;
|
||
|
||
if (ioctl (tty, TIOCGWINSZ, &w) == 0)
|
||
(void) ioctl (tty, TIOCSWINSZ, &w);
|
||
#endif /* TIOCGWINSZ */
|
||
}
|
||
|
||
#if defined (NEW_TTY_DRIVER)
|
||
|
||
/* Values for the `flags' field of a struct bsdtty. This tells which
|
||
elements of the struct bsdtty have been fetched from the system and
|
||
are valid. */
|
||
#define SGTTY_SET 0x01
|
||
#define LFLAG_SET 0x02
|
||
#define TCHARS_SET 0x04
|
||
#define LTCHARS_SET 0x08
|
||
|
||
struct bsdtty {
|
||
struct sgttyb sgttyb; /* Basic BSD tty driver information. */
|
||
int lflag; /* Local mode flags, like LPASS8. */
|
||
#if defined (TIOCGETC)
|
||
struct tchars tchars; /* Terminal special characters, including ^S and ^Q. */
|
||
#endif
|
||
#if defined (TIOCGLTC)
|
||
struct ltchars ltchars; /* 4.2 BSD editing characters */
|
||
#endif
|
||
int flags; /* Bitmap saying which parts of the struct are valid. */
|
||
};
|
||
|
||
#define TIOTYPE struct bsdtty
|
||
|
||
static TIOTYPE otio;
|
||
|
||
static void
|
||
save_tty_chars (tiop)
|
||
TIOTYPE *tiop;
|
||
{
|
||
_rl_last_tty_chars = _rl_tty_chars;
|
||
|
||
if (tiop->flags & SGTTY_SET)
|
||
{
|
||
_rl_tty_chars.t_erase = tiop->sgttyb.sg_erase;
|
||
_rl_tty_chars.t_kill = tiop->sgttyb.sg_kill;
|
||
}
|
||
|
||
if (tiop->flags & TCHARS_SET)
|
||
{
|
||
_rl_tty_chars.t_intr = tiop->tchars.t_intrc;
|
||
_rl_tty_chars.t_quit = tiop->tchars.t_quitc;
|
||
_rl_tty_chars.t_start = tiop->tchars.t_startc;
|
||
_rl_tty_chars.t_stop = tiop->tchars.t_stopc;
|
||
_rl_tty_chars.t_eof = tiop->tchars.t_eofc;
|
||
_rl_tty_chars.t_eol = '\n';
|
||
_rl_tty_chars.t_eol2 = tiop->tchars.t_brkc;
|
||
}
|
||
|
||
if (tiop->flags & LTCHARS_SET)
|
||
{
|
||
_rl_tty_chars.t_susp = tiop->ltchars.t_suspc;
|
||
_rl_tty_chars.t_dsusp = tiop->ltchars.t_dsuspc;
|
||
_rl_tty_chars.t_reprint = tiop->ltchars.t_rprntc;
|
||
_rl_tty_chars.t_flush = tiop->ltchars.t_flushc;
|
||
_rl_tty_chars.t_werase = tiop->ltchars.t_werasc;
|
||
_rl_tty_chars.t_lnext = tiop->ltchars.t_lnextc;
|
||
}
|
||
|
||
_rl_tty_chars.t_status = -1;
|
||
}
|
||
|
||
static int
|
||
get_tty_settings (tty, tiop)
|
||
int tty;
|
||
TIOTYPE *tiop;
|
||
{
|
||
set_winsize (tty);
|
||
|
||
tiop->flags = tiop->lflag = 0;
|
||
|
||
if (ioctl (tty, TIOCGETP, &(tiop->sgttyb)) < 0)
|
||
return -1;
|
||
tiop->flags |= SGTTY_SET;
|
||
|
||
#if defined (TIOCLGET)
|
||
if (ioctl (tty, TIOCLGET, &(tiop->lflag)) == 0)
|
||
tiop->flags |= LFLAG_SET;
|
||
#endif
|
||
|
||
#if defined (TIOCGETC)
|
||
if (ioctl (tty, TIOCGETC, &(tiop->tchars)) == 0)
|
||
tiop->flags |= TCHARS_SET;
|
||
#endif
|
||
|
||
#if defined (TIOCGLTC)
|
||
if (ioctl (tty, TIOCGLTC, &(tiop->ltchars)) == 0)
|
||
tiop->flags |= LTCHARS_SET;
|
||
#endif
|
||
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
set_tty_settings (tty, tiop)
|
||
int tty;
|
||
TIOTYPE *tiop;
|
||
{
|
||
if (tiop->flags & SGTTY_SET)
|
||
{
|
||
ioctl (tty, TIOCSETN, &(tiop->sgttyb));
|
||
tiop->flags &= ~SGTTY_SET;
|
||
}
|
||
readline_echoing_p = 1;
|
||
|
||
#if defined (TIOCLSET)
|
||
if (tiop->flags & LFLAG_SET)
|
||
{
|
||
ioctl (tty, TIOCLSET, &(tiop->lflag));
|
||
tiop->flags &= ~LFLAG_SET;
|
||
}
|
||
#endif
|
||
|
||
#if defined (TIOCSETC)
|
||
if (tiop->flags & TCHARS_SET)
|
||
{
|
||
ioctl (tty, TIOCSETC, &(tiop->tchars));
|
||
tiop->flags &= ~TCHARS_SET;
|
||
}
|
||
#endif
|
||
|
||
#if defined (TIOCSLTC)
|
||
if (tiop->flags & LTCHARS_SET)
|
||
{
|
||
ioctl (tty, TIOCSLTC, &(tiop->ltchars));
|
||
tiop->flags &= ~LTCHARS_SET;
|
||
}
|
||
#endif
|
||
|
||
return 0;
|
||
}
|
||
|
||
static void
|
||
prepare_terminal_settings (meta_flag, oldtio, tiop)
|
||
int meta_flag;
|
||
TIOTYPE oldtio, *tiop;
|
||
{
|
||
readline_echoing_p = (oldtio.sgttyb.sg_flags & ECHO);
|
||
|
||
/* Copy the original settings to the structure we're going to use for
|
||
our settings. */
|
||
tiop->sgttyb = oldtio.sgttyb;
|
||
tiop->lflag = oldtio.lflag;
|
||
#if defined (TIOCGETC)
|
||
tiop->tchars = oldtio.tchars;
|
||
#endif
|
||
#if defined (TIOCGLTC)
|
||
tiop->ltchars = oldtio.ltchars;
|
||
#endif
|
||
tiop->flags = oldtio.flags;
|
||
|
||
/* First, the basic settings to put us into character-at-a-time, no-echo
|
||
input mode. */
|
||
tiop->sgttyb.sg_flags &= ~(ECHO | CRMOD);
|
||
tiop->sgttyb.sg_flags |= CBREAK;
|
||
|
||
/* If this terminal doesn't care how the 8th bit is used, then we can
|
||
use it for the meta-key. If only one of even or odd parity is
|
||
specified, then the terminal is using parity, and we cannot. */
|
||
#if !defined (ANYP)
|
||
# define ANYP (EVENP | ODDP)
|
||
#endif
|
||
if (((oldtio.sgttyb.sg_flags & ANYP) == ANYP) ||
|
||
((oldtio.sgttyb.sg_flags & ANYP) == 0))
|
||
{
|
||
tiop->sgttyb.sg_flags |= ANYP;
|
||
|
||
/* Hack on local mode flags if we can. */
|
||
#if defined (TIOCLGET)
|
||
# if defined (LPASS8)
|
||
tiop->lflag |= LPASS8;
|
||
# endif /* LPASS8 */
|
||
#endif /* TIOCLGET */
|
||
}
|
||
|
||
#if defined (TIOCGETC)
|
||
# if defined (USE_XON_XOFF)
|
||
/* Get rid of terminal output start and stop characters. */
|
||
tiop->tchars.t_stopc = -1; /* C-s */
|
||
tiop->tchars.t_startc = -1; /* C-q */
|
||
|
||
/* If there is an XON character, bind it to restart the output. */
|
||
if (oldtio.tchars.t_startc != -1)
|
||
rl_bind_key (oldtio.tchars.t_startc, rl_restart_output);
|
||
# endif /* USE_XON_XOFF */
|
||
|
||
/* If there is an EOF char, bind _rl_eof_char to it. */
|
||
if (oldtio.tchars.t_eofc != -1)
|
||
_rl_eof_char = oldtio.tchars.t_eofc;
|
||
|
||
# if defined (NO_KILL_INTR)
|
||
/* Get rid of terminal-generated SIGQUIT and SIGINT. */
|
||
tiop->tchars.t_quitc = -1; /* C-\ */
|
||
tiop->tchars.t_intrc = -1; /* C-c */
|
||
# endif /* NO_KILL_INTR */
|
||
#endif /* TIOCGETC */
|
||
|
||
#if defined (TIOCGLTC)
|
||
/* Make the interrupt keys go away. Just enough to make people happy. */
|
||
tiop->ltchars.t_dsuspc = -1; /* C-y */
|
||
tiop->ltchars.t_lnextc = -1; /* C-v */
|
||
#endif /* TIOCGLTC */
|
||
}
|
||
|
||
#else /* !defined (NEW_TTY_DRIVER) */
|
||
|
||
#if !defined (VMIN)
|
||
# define VMIN VEOF
|
||
#endif
|
||
|
||
#if !defined (VTIME)
|
||
# define VTIME VEOL
|
||
#endif
|
||
|
||
#if defined (TERMIOS_TTY_DRIVER)
|
||
# define TIOTYPE struct termios
|
||
# define DRAIN_OUTPUT(fd) tcdrain (fd)
|
||
# define GETATTR(tty, tiop) (tcgetattr (tty, tiop))
|
||
# ifdef M_UNIX
|
||
# define SETATTR(tty, tiop) (tcsetattr (tty, TCSANOW, tiop))
|
||
# else
|
||
# define SETATTR(tty, tiop) (tcsetattr (tty, TCSADRAIN, tiop))
|
||
# endif /* !M_UNIX */
|
||
#else
|
||
# define TIOTYPE struct termio
|
||
# define DRAIN_OUTPUT(fd)
|
||
# define GETATTR(tty, tiop) (ioctl (tty, TCGETA, tiop))
|
||
# define SETATTR(tty, tiop) (ioctl (tty, TCSETAW, tiop))
|
||
#endif /* !TERMIOS_TTY_DRIVER */
|
||
|
||
static TIOTYPE otio;
|
||
|
||
#if defined (FLUSHO)
|
||
# define OUTPUT_BEING_FLUSHED(tp) (tp->c_lflag & FLUSHO)
|
||
#else
|
||
# define OUTPUT_BEING_FLUSHED(tp) 0
|
||
#endif
|
||
|
||
static void
|
||
save_tty_chars (tiop)
|
||
TIOTYPE *tiop;
|
||
{
|
||
_rl_last_tty_chars = _rl_tty_chars;
|
||
|
||
_rl_tty_chars.t_eof = tiop->c_cc[VEOF];
|
||
_rl_tty_chars.t_eol = tiop->c_cc[VEOL];
|
||
#ifdef VEOL2
|
||
_rl_tty_chars.t_eol2 = tiop->c_cc[VEOL2];
|
||
#endif
|
||
_rl_tty_chars.t_erase = tiop->c_cc[VERASE];
|
||
#ifdef VWERASE
|
||
_rl_tty_chars.t_werase = tiop->c_cc[VWERASE];
|
||
#endif
|
||
_rl_tty_chars.t_kill = tiop->c_cc[VKILL];
|
||
#ifdef VREPRINT
|
||
_rl_tty_chars.t_reprint = tiop->c_cc[VREPRINT];
|
||
#endif
|
||
_rl_tty_chars.t_intr = tiop->c_cc[VINTR];
|
||
_rl_tty_chars.t_quit = tiop->c_cc[VQUIT];
|
||
#ifdef VSUSP
|
||
_rl_tty_chars.t_susp = tiop->c_cc[VSUSP];
|
||
#endif
|
||
#ifdef VDSUSP
|
||
_rl_tty_chars.t_dsusp = tiop->c_cc[VDSUSP];
|
||
#endif
|
||
#ifdef VSTART
|
||
_rl_tty_chars.t_start = tiop->c_cc[VSTART];
|
||
#endif
|
||
#ifdef VSTOP
|
||
_rl_tty_chars.t_stop = tiop->c_cc[VSTOP];
|
||
#endif
|
||
#ifdef VLNEXT
|
||
_rl_tty_chars.t_lnext = tiop->c_cc[VLNEXT];
|
||
#endif
|
||
#ifdef VDISCARD
|
||
_rl_tty_chars.t_flush = tiop->c_cc[VDISCARD];
|
||
#endif
|
||
#ifdef VSTATUS
|
||
_rl_tty_chars.t_status = tiop->c_cc[VSTATUS];
|
||
#endif
|
||
}
|
||
|
||
#if defined (_AIX) || defined (_AIX41)
|
||
/* Currently this is only used on AIX */
|
||
static void
|
||
rltty_warning (msg)
|
||
char *msg;
|
||
{
|
||
fprintf (stderr, "readline: warning: %s\n", msg);
|
||
}
|
||
#endif
|
||
|
||
#if defined (_AIX)
|
||
void
|
||
setopost(tp)
|
||
TIOTYPE *tp;
|
||
{
|
||
if ((tp->c_oflag & OPOST) == 0)
|
||
{
|
||
rltty_warning ("turning on OPOST for terminal\r");
|
||
tp->c_oflag |= OPOST|ONLCR;
|
||
}
|
||
}
|
||
#endif
|
||
|
||
static int
|
||
_get_tty_settings (tty, tiop)
|
||
int tty;
|
||
TIOTYPE *tiop;
|
||
{
|
||
int ioctl_ret;
|
||
|
||
while (1)
|
||
{
|
||
ioctl_ret = GETATTR (tty, tiop);
|
||
if (ioctl_ret < 0)
|
||
{
|
||
if (errno != EINTR)
|
||
return -1;
|
||
else
|
||
continue;
|
||
}
|
||
if (OUTPUT_BEING_FLUSHED (tiop))
|
||
{
|
||
#if defined (FLUSHO) && defined (_AIX41)
|
||
rltty_warning ("turning off output flushing");
|
||
tiop->c_lflag &= ~FLUSHO;
|
||
break;
|
||
#else
|
||
continue;
|
||
#endif
|
||
}
|
||
break;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
get_tty_settings (tty, tiop)
|
||
int tty;
|
||
TIOTYPE *tiop;
|
||
{
|
||
set_winsize (tty);
|
||
|
||
if (_get_tty_settings (tty, tiop) < 0)
|
||
return -1;
|
||
|
||
#if defined (_AIX)
|
||
setopost(tiop);
|
||
#endif
|
||
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
_set_tty_settings (tty, tiop)
|
||
int tty;
|
||
TIOTYPE *tiop;
|
||
{
|
||
while (SETATTR (tty, tiop) < 0)
|
||
{
|
||
if (errno != EINTR)
|
||
return -1;
|
||
errno = 0;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
set_tty_settings (tty, tiop)
|
||
int tty;
|
||
TIOTYPE *tiop;
|
||
{
|
||
if (_set_tty_settings (tty, tiop) < 0)
|
||
return -1;
|
||
|
||
#if 0
|
||
|
||
#if defined (TERMIOS_TTY_DRIVER)
|
||
# if defined (__ksr1__)
|
||
if (ksrflow)
|
||
{
|
||
ksrflow = 0;
|
||
tcflow (tty, TCOON);
|
||
}
|
||
# else /* !ksr1 */
|
||
tcflow (tty, TCOON); /* Simulate a ^Q. */
|
||
# endif /* !ksr1 */
|
||
#else
|
||
ioctl (tty, TCXONC, 1); /* Simulate a ^Q. */
|
||
#endif /* !TERMIOS_TTY_DRIVER */
|
||
|
||
#endif /* 0 */
|
||
|
||
return 0;
|
||
}
|
||
|
||
static void
|
||
prepare_terminal_settings (meta_flag, oldtio, tiop)
|
||
int meta_flag;
|
||
TIOTYPE oldtio, *tiop;
|
||
{
|
||
readline_echoing_p = (oldtio.c_lflag & ECHO);
|
||
|
||
tiop->c_lflag &= ~(ICANON | ECHO);
|
||
|
||
if ((unsigned char) oldtio.c_cc[VEOF] != (unsigned char) _POSIX_VDISABLE)
|
||
_rl_eof_char = oldtio.c_cc[VEOF];
|
||
|
||
#if defined (USE_XON_XOFF)
|
||
#if defined (IXANY)
|
||
tiop->c_iflag &= ~(IXON | IXOFF | IXANY);
|
||
#else
|
||
/* `strict' Posix systems do not define IXANY. */
|
||
tiop->c_iflag &= ~(IXON | IXOFF);
|
||
#endif /* IXANY */
|
||
#endif /* USE_XON_XOFF */
|
||
|
||
/* Only turn this off if we are using all 8 bits. */
|
||
if (((tiop->c_cflag & CSIZE) == CS8) || meta_flag)
|
||
tiop->c_iflag &= ~(ISTRIP | INPCK);
|
||
|
||
/* Make sure we differentiate between CR and NL on input. */
|
||
tiop->c_iflag &= ~(ICRNL | INLCR);
|
||
|
||
#if !defined (HANDLE_SIGNALS)
|
||
tiop->c_lflag &= ~ISIG;
|
||
#else
|
||
tiop->c_lflag |= ISIG;
|
||
#endif
|
||
|
||
tiop->c_cc[VMIN] = 1;
|
||
tiop->c_cc[VTIME] = 0;
|
||
|
||
#if defined (FLUSHO)
|
||
if (OUTPUT_BEING_FLUSHED (tiop))
|
||
{
|
||
tiop->c_lflag &= ~FLUSHO;
|
||
oldtio.c_lflag &= ~FLUSHO;
|
||
}
|
||
#endif
|
||
|
||
/* Turn off characters that we need on Posix systems with job control,
|
||
just to be sure. This includes ^Y and ^V. This should not really
|
||
be necessary. */
|
||
#if defined (TERMIOS_TTY_DRIVER) && defined (_POSIX_VDISABLE)
|
||
|
||
#if defined (VLNEXT)
|
||
tiop->c_cc[VLNEXT] = _POSIX_VDISABLE;
|
||
#endif
|
||
|
||
#if defined (VDSUSP)
|
||
tiop->c_cc[VDSUSP] = _POSIX_VDISABLE;
|
||
#endif
|
||
|
||
#endif /* TERMIOS_TTY_DRIVER && _POSIX_VDISABLE */
|
||
}
|
||
#endif /* NEW_TTY_DRIVER */
|
||
|
||
/* Put the terminal in CBREAK mode so that we can detect key presses. */
|
||
void
|
||
rl_prep_terminal (meta_flag)
|
||
int meta_flag;
|
||
{
|
||
int tty;
|
||
TIOTYPE tio;
|
||
|
||
if (terminal_prepped)
|
||
return;
|
||
|
||
/* Try to keep this function from being INTerrupted. */
|
||
block_sigint ();
|
||
|
||
tty = fileno (rl_instream);
|
||
|
||
if (get_tty_settings (tty, &tio) < 0)
|
||
{
|
||
release_sigint ();
|
||
return;
|
||
}
|
||
|
||
otio = tio;
|
||
|
||
save_tty_chars (&otio);
|
||
|
||
prepare_terminal_settings (meta_flag, otio, &tio);
|
||
|
||
if (set_tty_settings (tty, &tio) < 0)
|
||
{
|
||
release_sigint ();
|
||
return;
|
||
}
|
||
|
||
if (_rl_enable_keypad)
|
||
_rl_control_keypad (1);
|
||
|
||
fflush (rl_outstream);
|
||
terminal_prepped = 1;
|
||
RL_SETSTATE(RL_STATE_TERMPREPPED);
|
||
|
||
release_sigint ();
|
||
}
|
||
|
||
/* Restore the terminal's normal settings and modes. */
|
||
void
|
||
rl_deprep_terminal ()
|
||
{
|
||
int tty;
|
||
|
||
if (!terminal_prepped)
|
||
return;
|
||
|
||
/* Try to keep this function from being interrupted. */
|
||
block_sigint ();
|
||
|
||
tty = fileno (rl_instream);
|
||
|
||
if (_rl_enable_keypad)
|
||
_rl_control_keypad (0);
|
||
|
||
fflush (rl_outstream);
|
||
|
||
if (set_tty_settings (tty, &otio) < 0)
|
||
{
|
||
release_sigint ();
|
||
return;
|
||
}
|
||
|
||
terminal_prepped = 0;
|
||
RL_UNSETSTATE(RL_STATE_TERMPREPPED);
|
||
|
||
release_sigint ();
|
||
}
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Bogus Flow Control */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
int
|
||
rl_restart_output (count, key)
|
||
int count, key;
|
||
{
|
||
int fildes = fileno (rl_outstream);
|
||
#if defined (TIOCSTART)
|
||
#if defined (apollo)
|
||
ioctl (&fildes, TIOCSTART, 0);
|
||
#else
|
||
ioctl (fildes, TIOCSTART, 0);
|
||
#endif /* apollo */
|
||
|
||
#else /* !TIOCSTART */
|
||
# if defined (TERMIOS_TTY_DRIVER)
|
||
# if defined (__ksr1__)
|
||
if (ksrflow)
|
||
{
|
||
ksrflow = 0;
|
||
tcflow (fildes, TCOON);
|
||
}
|
||
# else /* !ksr1 */
|
||
tcflow (fildes, TCOON); /* Simulate a ^Q. */
|
||
# endif /* !ksr1 */
|
||
# else /* !TERMIOS_TTY_DRIVER */
|
||
# if defined (TCXONC)
|
||
ioctl (fildes, TCXONC, TCOON);
|
||
# endif /* TCXONC */
|
||
# endif /* !TERMIOS_TTY_DRIVER */
|
||
#endif /* !TIOCSTART */
|
||
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
rl_stop_output (count, key)
|
||
int count, key;
|
||
{
|
||
int fildes = fileno (rl_instream);
|
||
|
||
#if defined (TIOCSTOP)
|
||
# if defined (apollo)
|
||
ioctl (&fildes, TIOCSTOP, 0);
|
||
# else
|
||
ioctl (fildes, TIOCSTOP, 0);
|
||
# endif /* apollo */
|
||
#else /* !TIOCSTOP */
|
||
# if defined (TERMIOS_TTY_DRIVER)
|
||
# if defined (__ksr1__)
|
||
ksrflow = 1;
|
||
# endif /* ksr1 */
|
||
tcflow (fildes, TCOOFF);
|
||
# else
|
||
# if defined (TCXONC)
|
||
ioctl (fildes, TCXONC, TCOON);
|
||
# endif /* TCXONC */
|
||
# endif /* !TERMIOS_TTY_DRIVER */
|
||
#endif /* !TIOCSTOP */
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* **************************************************************** */
|
||
/* */
|
||
/* Default Key Bindings */
|
||
/* */
|
||
/* **************************************************************** */
|
||
|
||
/* Set the system's default editing characters to their readline equivalents
|
||
in KMAP. Should be static, now that we have rl_tty_set_default_bindings. */
|
||
void
|
||
rltty_set_default_bindings (kmap)
|
||
Keymap kmap;
|
||
{
|
||
TIOTYPE ttybuff;
|
||
int tty = fileno (rl_instream);
|
||
|
||
#if defined (NEW_TTY_DRIVER)
|
||
|
||
#define SET_SPECIAL(sc, func) \
|
||
do \
|
||
{ \
|
||
int ic; \
|
||
ic = sc; \
|
||
if (ic != -1 && kmap[ic].type == ISFUNC) \
|
||
kmap[ic].function = func; \
|
||
} \
|
||
while (0)
|
||
|
||
if (get_tty_settings (tty, &ttybuff) == 0)
|
||
{
|
||
if (ttybuff.flags & SGTTY_SET)
|
||
{
|
||
SET_SPECIAL (ttybuff.sgttyb.sg_erase, rl_rubout);
|
||
SET_SPECIAL (ttybuff.sgttyb.sg_kill, rl_unix_line_discard);
|
||
}
|
||
|
||
# if defined (TIOCGLTC)
|
||
if (ttybuff.flags & LTCHARS_SET)
|
||
{
|
||
SET_SPECIAL (ttybuff.ltchars.t_werasc, rl_unix_word_rubout);
|
||
SET_SPECIAL (ttybuff.ltchars.t_lnextc, rl_quoted_insert);
|
||
}
|
||
# endif /* TIOCGLTC */
|
||
}
|
||
|
||
#else /* !NEW_TTY_DRIVER */
|
||
|
||
#define SET_SPECIAL(sc, func) \
|
||
do \
|
||
{ \
|
||
unsigned char uc; \
|
||
uc = ttybuff.c_cc[sc]; \
|
||
if (uc != (unsigned char)_POSIX_VDISABLE && kmap[uc].type == ISFUNC) \
|
||
kmap[uc].function = func; \
|
||
} \
|
||
while (0)
|
||
|
||
if (get_tty_settings (tty, &ttybuff) == 0)
|
||
{
|
||
SET_SPECIAL (VERASE, rl_rubout);
|
||
SET_SPECIAL (VKILL, rl_unix_line_discard);
|
||
|
||
# if defined (VLNEXT) && defined (TERMIOS_TTY_DRIVER)
|
||
SET_SPECIAL (VLNEXT, rl_quoted_insert);
|
||
# endif /* VLNEXT && TERMIOS_TTY_DRIVER */
|
||
|
||
# if defined (VWERASE) && defined (TERMIOS_TTY_DRIVER)
|
||
SET_SPECIAL (VWERASE, rl_unix_word_rubout);
|
||
# endif /* VWERASE && TERMIOS_TTY_DRIVER */
|
||
}
|
||
#endif /* !NEW_TTY_DRIVER */
|
||
}
|
||
|
||
/* New public way to set the system default editing chars to their readline
|
||
equivalents. */
|
||
void
|
||
rl_tty_set_default_bindings (kmap)
|
||
Keymap kmap;
|
||
{
|
||
rltty_set_default_bindings (kmap);
|
||
}
|
||
|
||
#if defined (HANDLE_SIGNALS)
|
||
|
||
#if defined (NEW_TTY_DRIVER)
|
||
int
|
||
_rl_disable_tty_signals ()
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
_rl_restore_tty_signals ()
|
||
{
|
||
return 0;
|
||
}
|
||
#else
|
||
|
||
static TIOTYPE sigstty, nosigstty;
|
||
static int tty_sigs_disabled = 0;
|
||
|
||
int
|
||
_rl_disable_tty_signals ()
|
||
{
|
||
if (tty_sigs_disabled)
|
||
return 0;
|
||
|
||
if (_get_tty_settings (fileno (rl_instream), &sigstty) < 0)
|
||
return -1;
|
||
|
||
nosigstty = sigstty;
|
||
|
||
nosigstty.c_lflag &= ~ISIG;
|
||
|
||
if (_set_tty_settings (fileno (rl_instream), &nosigstty) < 0)
|
||
return (_set_tty_settings (fileno (rl_instream), &sigstty));
|
||
|
||
tty_sigs_disabled = 1;
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
_rl_restore_tty_signals ()
|
||
{
|
||
if (tty_sigs_disabled == 0)
|
||
return 0;
|
||
|
||
return (_set_tty_settings (fileno (rl_instream), &sigstty));
|
||
}
|
||
#endif /* !NEW_TTY_DRIVER */
|
||
|
||
#endif /* HANDLE_SIGNALS */
|