1/* 2 * Copyright (c) 1995, 1996, 1997, 1998 Kungliga Tekniska H��gskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34#include <config.h> 35 36#include <stdlib.h> 37#ifdef HAVE_UNISTD_H 38#include <unistd.h> 39#endif 40#ifdef HAVE_SYS_TYPES_H 41#include <sys/types.h> 42#endif 43 44#if 0 /* Where were those needed? /confused */ 45#ifdef HAVE_SYS_PROC_H 46#include <sys/proc.h> 47#endif 48 49#ifdef HAVE_SYS_TTY_H 50#include <sys/tty.h> 51#endif 52#endif 53 54#ifdef HAVE_TERMIOS_H 55#include <termios.h> 56#endif 57 58#include "roken.h" 59 60int ROKEN_LIB_FUNCTION 61get_window_size(int fd, struct winsize *wp) 62{ 63 int ret = -1; 64 65 memset(wp, 0, sizeof(*wp)); 66 67#if defined(TIOCGWINSZ) 68 ret = ioctl(fd, TIOCGWINSZ, wp); 69#elif defined(TIOCGSIZE) 70 { 71 struct ttysize ts; 72 73 ret = ioctl(fd, TIOCGSIZE, &ts); 74 if(ret == 0) { 75 wp->ws_row = ts.ts_lines; 76 wp->ws_col = ts.ts_cols; 77 } 78 } 79#elif defined(HAVE__SCRSIZE) 80 { 81 int dst[2]; 82 83 _scrsize(dst); 84 wp->ws_row = dst[1]; 85 wp->ws_col = dst[0]; 86 ret = 0; 87 } 88#endif 89 if (ret != 0) { 90 char *s; 91 if((s = getenv("COLUMNS"))) 92 wp->ws_col = atoi(s); 93 if((s = getenv("LINES"))) 94 wp->ws_row = atoi(s); 95 if(wp->ws_col > 0 && wp->ws_row > 0) 96 ret = 0; 97 } 98 return ret; 99} 100