/* winsize.c - handle window size changes and information. */
/* Copyright (C) 2005 Free Software Foundation, Inc.
This file is part of GNU Bash, the Bourne Again SHell.
Bash 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.
Bash 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 Bash. If not, see .
*/
#include "config.h"
#include
#include "bashtypes.h"
#if defined (HAVE_UNISTD_H)
# include
#endif
#include
#if !defined (STRUCT_WINSIZE_IN_SYS_IOCTL)
/* For struct winsize on SCO */
/* sys/ptem.h has winsize but needs mblk_t from sys/stream.h */
# if defined (HAVE_SYS_PTEM_H) && defined (TIOCGWINSZ) && defined (SIGWINCH)
# if defined (HAVE_SYS_STREAM_H)
# include
# endif
# include
# endif /* HAVE_SYS_PTEM_H && TIOCGWINSZ && SIGWINCH */
#endif /* !STRUCT_WINSIZE_IN_SYS_IOCTL */
#include
/* Return the fd from which we are actually getting input. */
#define input_tty() (shell_tty != -1) ? shell_tty : fileno (stderr)
#if !defined (errno)
extern int errno;
#endif /* !errno */
extern int shell_tty;
#if defined (READLINE)
extern void rl_set_screen_size __P((int, int));
#endif
extern void sh_set_lines_and_columns __P((int, int));
void
get_new_window_size (from_sig, rp, cp)
int from_sig;
int *rp, *cp;
{
#if defined (TIOCGWINSZ)
struct winsize win;
int tty;
tty = input_tty ();
if (tty >= 0 && (ioctl (tty, TIOCGWINSZ, &win) == 0) &&
win.ws_row > 0 && win.ws_col > 0)
{
sh_set_lines_and_columns (win.ws_row, win.ws_col);
#if defined (READLINE)
rl_set_screen_size (win.ws_row, win.ws_col);
if (rp)
*rp = win.ws_row;
if (cp)
*cp = win.ws_col;
#endif
}
#endif
}