83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
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/* Handle window size changes and information. */
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/* Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of GNU Bash, the Bourne Again SHell.
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Bash is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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Bash is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License along
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with Bash; see the file COPYING. If not, write to the Free Software
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Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
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#include "config.h"
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#include <stdc.h>
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#include "bashtypes.h"
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#if defined (HAVE_UNISTD_H)
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# include <unistd.h>
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#endif
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#include <sys/ioctl.h>
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#if !defined (STRUCT_WINSIZE_IN_SYS_IOCTL)
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/* For struct winsize on SCO */
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/* sys/ptem.h has winsize but needs mblk_t from sys/stream.h */
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# if defined (HAVE_SYS_PTEM_H) && defined (TIOCGWINSZ) && defined (SIGWINCH)
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# if defined (HAVE_SYS_STREAM_H)
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# include <sys/stream.h>
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# endif
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# include <sys/ptem.h>
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# endif /* HAVE_SYS_PTEM_H && TIOCGWINSZ && SIGWINCH */
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#endif /* !STRUCT_WINSIZE_IN_SYS_IOCTL */
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#include <stdio.h>
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/* Return the fd from which we are actually getting input. */
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#define input_tty() (shell_tty != -1) ? shell_tty : fileno (stderr)
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#if !defined (errno)
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extern int errno;
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#endif /* !errno */
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extern int shell_tty;
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#if defined (READLINE)
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extern void rl_set_screen_size __P((int, int));
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#endif
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void
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get_new_window_size (from_sig, rp, cp)
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int from_sig;
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int *rp, *cp;
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{
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#if defined (TIOCGWINSZ)
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struct winsize win;
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int tty;
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tty = input_tty ();
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if (tty >= 0 && (ioctl (tty, TIOCGWINSZ, &win) == 0) &&
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win.ws_row > 0 && win.ws_col > 0)
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{
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sh_set_lines_and_columns (win.ws_row, win.ws_col);
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#if defined (READLINE)
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rl_set_screen_size (win.ws_row, win.ws_col);
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if (rp)
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*rp = win.ws_row;
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if (cp)
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*cp = win.ws_col;
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#endif
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}
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#endif
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}
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