From 2c7c345c987b3af041e2ef8b307fd1a654f1e501 Mon Sep 17 00:00:00 2001
From: Ali Gholami Rudi <ali@rudi.ir>
Date: Sat, 18 Jul 2009 20:15:28 +0430
Subject: [PATCH] term: wait for input if not available

---
 term.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/term.c b/term.c
index 0c7fee2..bbd0512 100644
--- a/term.c
+++ b/term.c
@@ -1,5 +1,7 @@
 #include <ctype.h>
+#include <errno.h>
 #include <fcntl.h>
+#include <poll.h>
 #include <pty.h>
 #include <stdlib.h>
 #include <stdio.h>
@@ -139,11 +141,24 @@ static void setsize(void)
 static char ptybuf[PTYBUFSIZE];
 static int ptylen;
 static int ptycur;
+static void waitpty(void)
+{
+	struct pollfd ufds[1];
+	ufds[0].fd = term->fd;
+	ufds[0].events = POLLIN;
+	poll(ufds, 1, -1);
+}
+
 static int readpty(void)
 {
 	if (ptycur < ptylen)
 		return ptybuf[ptycur++];
-	if ((ptylen = read(term->fd, ptybuf, PTYBUFSIZE)) > 0) {
+	ptylen = read(term->fd, ptybuf, PTYBUFSIZE);
+	if (ptylen == -1 && errno == EAGAIN) {
+		waitpty();
+		ptylen = read(term->fd, ptybuf, PTYBUFSIZE);
+	}
+	if (ptylen > 0) {
 		ptycur = 1;
 		return ptybuf[0];
 	}
-- 
2.11.4.GIT