1                 : /*
       2                 :  * Copyright (c) 1995, 1996, 1997, 1998 Kungliga Tekniska Högskolan
       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                 : 
      60                 : ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
      61                 : get_window_size(int fd, struct winsize *wp)
      62               0 : {
      63               0 :     int ret = -1;
      64                 : 
      65               0 :     memset(wp, 0, sizeof(*wp));
      66                 : 
      67                 : #if defined(TIOCGWINSZ)
      68               0 :     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                 : #elif defined(_WIN32)
      89                 :     {
      90                 :         intptr_t fh = 0;
      91                 :         CONSOLE_SCREEN_BUFFER_INFO sb_info;
      92                 : 
      93                 :         fh = _get_osfhandle(fd);
      94                 :         if (fh != (intptr_t) INVALID_HANDLE_VALUE &&
      95                 :             GetConsoleScreenBufferInfo((HANDLE) fh, &sb_info)) {
      96                 :             wp->ws_row = 1 + sb_info.srWindow.Bottom - sb_info.srWindow.Top;
      97                 :             wp->ws_col = 1 + sb_info.srWindow.Right - sb_info.srWindow.Left;
      98                 : 
      99                 :             ret = 0;
     100                 :         }
     101                 :     }
     102                 : #endif
     103               0 :     if (ret != 0) {
     104                 :         char *s;
     105               0 :         if((s = getenv("COLUMNS")))
     106               0 :             wp->ws_col = atoi(s);
     107               0 :         if((s = getenv("LINES")))
     108               0 :             wp->ws_row = atoi(s);
     109               0 :         if(wp->ws_col > 0 && wp->ws_row > 0)
     110               0 :             ret = 0;
     111                 :     }
     112               0 :     return ret;
     113                 : }