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#include <curses.h>
#include <err.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/select.h>
int
main()
{
fd_set rfds;
int c, in, n, out, startx, y;
struct timeval tv;
WINDOW *w;
w = initscr();
raw();
noecho();
timeout(1);
if((in = open("/var/tmp/r.in", O_RDWR)) == -1)
err(1, "/var/tmp/r.in");
if((out = open("/var/tmp/r.out", O_RDWR)) == -1)
err(1, "/var/tmp/r.out");
tv.tv_sec = 0;
tv.tv_usec = 1;
FD_ZERO(&rfds);
startx = 0;
for(;;){
FD_SET(out, &rfds);
if(select(out+1, &rfds, NULL, NULL, &tv) > 0){
read(out, &c, 1);
printw("%c", c);
startx = -1;
}
if((c = getch()) != ERR){
if(startx == -1)
startx = getcurx(w);
if(c == 26) /* ^Z */
break;
if(c == 21){ /* ^U */
move: y = getcury(w);
move(y, startx);
continue;
}
if(c == '\n')
goto move;
else
printw("%c", c);
write(in, &c, 1);
}
}
echo();
noraw();
endwin();
}
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