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#include <u.h>
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#include <libc.h>
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int alarmed;
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int done;
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void
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usage(void)
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{
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	fprint(2, "usage: %s [-q]\n", argv0);
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	exits("usage");
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}
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void
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ding(void*, char *s)
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{
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	if(strstr(s, "alarm")){
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		alarmed = 1;
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		noted(NCONT);
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	} else
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		noted(NDFLT);
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}
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void
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main(int argc, char **argv)
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{
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	int fd, cfd;
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	int i;
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	char buf[1];
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	int quiet = 0;
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	ARGBEGIN {
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	case 'q':
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		quiet = 1;
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		break;
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	} ARGEND;
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	notify(ding);
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	fd = open("/dev/cons", ORDWR);
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	if(fd < 0)
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		sysfatal("opening /dev/cons: %r");
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	cfd = open("/dev/consctl", OWRITE);
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	if(cfd >= 0)
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		fprint(cfd, "rawon");
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	switch(rfork(RFPROC|RFFDG|RFMEM)){
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	case -1:
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		sysfatal("forking: %r");
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	default:
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		// read until we're done writing or
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		// we get an end of line
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		while(!done){
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			alarmed = 0;
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			alarm(250);
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			i = read(0, buf, 1);
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			alarm(0);
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			if(i == 0)
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				break;
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			if(i < 0){
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				if(alarmed)
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					continue;
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				else
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					break;
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			}
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			if(!quiet && write(fd, buf, 1) < 1)
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				break;
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			if(buf[0] == '\n' || buf[0] == '\r')
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				break;
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		}
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		break;
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	case 0:
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		// pass one character at a time till end of line
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		for(;;){
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			if(read(fd, buf, 1) <= 0)
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				break;
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			if(write(1, buf, 1) < 0)
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				break;
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			if(buf[0] == '\n' || buf[0] == '\r')
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				break;
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		}
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		// tell reader to give up after next char
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		done = 1;
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		break;
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	}
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	exits(0);
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}