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/*
* 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.
*/
#include <config.h>
#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"
ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
get_window_size(int fd, int *lines, int *columns)
{
char *s;
#if defined(TIOCGWINSZ)
{
struct winsize ws;
int ret;
ret = ioctl(fd, TIOCGWINSZ, &ws);
if (ret != -1) {
if (lines)
*lines = ws.ws_row;
if (columns)
*columns = ws.ws_col;
return 0;
}
}
#elif defined(TIOCGSIZE)
{
struct ttysize ts;
int ret;
ret = ioctl(fd, TIOCGSIZE, &ts);
if (ret != -1) {
if (lines)
*lines = ts.ws_lines;
if (columns)
*columns = ts.ts_cols;
return 0;
}
}
#elif defined(HAVE__SCRSIZE)
{
int dst[2];
_scrsize(dst);
if (lines)
*lines = dst[1];
if (columns)
*columns = dst[0];
return 0;
}
#elif defined(_WIN32)
{
intptr_t fh = 0;
CONSOLE_SCREEN_BUFFER_INFO sb_info;
fh = _get_osfhandle(fd);
if (fh != (intptr_t) INVALID_HANDLE_VALUE &&
GetConsoleScreenBufferInfo((HANDLE) fh, &sb_info)) {
if (lines)
*lines = 1 + sb_info.srWindow.Bottom - sb_info.srWindow.Top;
if (columns)
*columns = 1 + sb_info.srWindow.Right - sb_info.srWindow.Left;
return 0;
}
}
#endif
if (columns) {
if ((s = getenv("COLUMNS")))
*columns = atoi(s);
else
return -1;
}
if (lines) {
if ((s = getenv("LINES")))
*lines = atoi(s);
else
return -1;
}
return 0;
}
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