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(get_window_size): check COLUMNS and LINES

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@4989 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Johan Danielsson
1998-05-29 22:12:55 +00:00
parent 723f964c4c
commit c803cad279
1 changed files with 46 additions and 22 deletions
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68
lib/roken/get_window_size.c
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@@ -68,29 +68,53 @@ RCSID("$Id$");
int
get_window_size(int fd, struct winsize *wp)
{
#if defined(TIOCGWINSZ)
return ioctl(fd, TIOCGWINSZ, wp);
char *s;
struct winsize tmp;
int ret = -1;
memset(wp, 0, sizeof(*wp));
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)
return 0;
#if defined(TIOGCWINSZ)
ret = ioctl(fd, TIOGCWINSZ, &tmp);
#elif defined(TIOCGSIZE)
struct ttysize ts;
int error;
if ((error = ioctl(0, TIOCGSIZE, &ts)) != 0)
return (error);
wp->ws_row = ts.ts_lines;
wp->ws_col = ts.ts_cols;
wp->ws_xpixel = 0;
wp->ws_ypixel = 0;
return 0;
{
struct ttysize ts;
ret = ioctl(fd, TIOCGSIZE, &ts);
if(ret == 0) {
tmp.ws_row = ts.ts_lines;
tmp.ws_row = ts.ts_cols;
tmp.ws_xpixel = 0;
tmp.ws_ypixel = 0;
}
}
#elif defined(HAVE__SCRSIZE)
int dst[2];
_scrsize(dst);
wp->ws_row = dst[1];
wp->ws_col = dst[0];
wp->ws_xpixel = 0;
wp->ws_ypixel = 0;
return 0;
#else
return -1;
{
int dst[2];
_scrsize(dst);
tmp.ws_row = dst[1];
tmp.ws_col = dst[0];
tmp.ws_xpixel = 0;
tmp.ws_ypixel = 0;
ret = 0;
}
#endif
if(ret == 0) {
if(wp->ws_col == 0)
wp->ws_col = tmp.ws_col;
if(wp->ws_row == 0)
wp->ws_row = tmp.ws_row;
if(wp->ws_xpixel == 0)
wp->ws_xpixel = tmp.ws_xpixel;
if(wp->ws_ypixel == 0)
wp->ws_ypixel = tmp.ws_ypixel;
}
return ret;
}