From c5ad54a55123582b09f9d9d8046623916c2dec4a Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Thu, 14 Jul 2022 17:23:50 +0200
Subject: user/shell/cat: support reading from stdin until eof

---
 src/user/driver/termcook.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'src/user/driver/termcook.c')

diff --git a/src/user/driver/termcook.c b/src/user/driver/termcook.c
index 6ed8223..56ac77c 100644
--- a/src/user/driver/termcook.c
+++ b/src/user/driver/termcook.c
@@ -28,8 +28,12 @@ static void line_editor(handle_t input, handle_t output) {
 					}
 					break;
 				case 4: /* EOT, C-d */
-					w_output(output, linebuf, linepos);
-					linepos = 0;
+					if (linepos > 0) {
+						w_output(output, linebuf, linepos);
+						linepos = 0;
+					} else {
+						_syscall_write(output, NULL, 0, 0); // eof
+					}
 					break;
 				case '\n':
 				case '\r':
-- 
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