103 lines
2.8 KiB
C
103 lines
2.8 KiB
C
/*
|
|
* Copyright (c) 1995, 1996, 1997, 1998 Kungliga Tekniska Högskolan
|
|
* (Royal Institute of Technology, Stockholm, Sweden).
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* 3. Neither the name of the Institute nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include <config.h>
|
|
RCSID("$Id: get_window_size.c,v 1.9 1999/12/02 16:58:46 joda Exp $");
|
|
#endif
|
|
|
|
#include <stdlib.h>
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
#ifdef HAVE_SYS_TYPES_H
|
|
#include <sys/types.h>
|
|
#endif
|
|
|
|
#if 0 /* Where were those needed? /confused */
|
|
#ifdef HAVE_SYS_PROC_H
|
|
#include <sys/proc.h>
|
|
#endif
|
|
|
|
#ifdef HAVE_SYS_TTY_H
|
|
#include <sys/tty.h>
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef HAVE_TERMIOS_H
|
|
#include <termios.h>
|
|
#endif
|
|
|
|
#include <roken.h>
|
|
|
|
int
|
|
get_window_size(int fd, struct winsize *wp)
|
|
{
|
|
int ret = -1;
|
|
|
|
memset(wp, 0, sizeof(*wp));
|
|
|
|
#if defined(TIOCGWINSZ)
|
|
ret = ioctl(fd, TIOCGWINSZ, wp);
|
|
#elif defined(TIOCGSIZE)
|
|
{
|
|
struct ttysize ts;
|
|
|
|
ret = ioctl(fd, TIOCGSIZE, &ts);
|
|
if(ret == 0) {
|
|
wp->ws_row = ts.ts_lines;
|
|
wp->ws_col = ts.ts_cols;
|
|
}
|
|
}
|
|
#elif defined(HAVE__SCRSIZE)
|
|
{
|
|
int dst[2];
|
|
|
|
_scrsize(dst);
|
|
wp->ws_row = dst[1];
|
|
wp->ws_col = dst[0];
|
|
ret = 0;
|
|
}
|
|
#endif
|
|
if (ret != 0) {
|
|
char *s;
|
|
if((s = getenv("COLUMNS")))
|
|
wp->ws_col = atoi(s);
|
|
if((s = getenv("LINES")))
|
|
wp->ws_row = atoi(s);
|
|
if(wp->ws_col > 0 && wp->ws_row > 0)
|
|
ret = 0;
|
|
}
|
|
return ret;
|
|
}
|