From 1640457f4755a4a5248f5e9c0106fa01f8f1e9ff Mon Sep 17 00:00:00 2001
From: Peter Stephenson
Date: Thu, 3 Mar 2022 19:19:35 +0000
Subject: 49792: Non-interative shell input is line buffered.
---
Src/input.c | 21 ++++++++++++++-------
1 file changed, 14 insertions(+), 7 deletions(-)
(limited to 'Src/input.c')
diff --git a/Src/input.c b/Src/input.c
index caeaff0e3..c59232681 100644
--- a/Src/input.c
+++ b/Src/input.c
@@ -223,13 +223,20 @@ shingetchar(void)
return STOUC(*shinbufptr++);
shinbufreset();
- do {
- errno = 0;
- nread = read(SHIN, shinbuffer, SHINBUFSIZE);
- } while (nread < 0 && errno == EINTR);
- if (nread <= 0)
- return -1;
- shinbufendptr = shinbuffer + nread;
+ for (;;) {
+ errno = 0;
+ nread = read(SHIN, shinbufendptr, 1);
+ if (nread > 0) {
+ /* Use line buffering (POSIX requirement) */
+ if (*shinbufendptr++ == '\n')
+ break;
+ if (shinbufendptr == shinbuffer + SHINBUFSIZE)
+ break;
+ } else if (nread == 0 || errno != EINTR)
+ break;
+ }
+ if (shinbufendptr == shinbuffer)
+ return -1;
return STOUC(*shinbufptr++);
}
--
cgit 1.4.1