scroll

commit d263c6ad31b144b8333d12d09e50b126fb762005
parent c242b24cfb682c23f3484e40921667ffa8e6c166
Author: Jan Klemkow <j.klemkow@wemelug.de>
Date:   Tue, 31 Mar 2020 21:52:01 +0200

bufferd i/o for terminal input

Diffstat:
M
scroll.c
 | 
26
+++++++++++++++-----------

1 file changed, 15 insertions(+), 11 deletions(-)
diff --git a/scroll.c b/scroll.c
@@ -372,26 +372,30 @@ main(int argc, char *argv[])
 	};
 
 	for (;;) {
+		char input[BUFSIZ];
+
 		if (poll(pfd, 2, -1) == -1 && errno != EINTR)
 			die("poll:");
 
 		if (pfd[0].revents & POLLIN) {
-			char c;
+			ssize_t n = read(STDIN_FILENO, input, sizeof input);
 
-			if (read(STDIN_FILENO, &c, 1) <= 0 && errno != EINTR)
+			if (n <= 0 && errno != EINTR)
 				die("read:");
-			if (c == 17) /* ^Q */
-				scrollup();
-			else if (c == 18) /* ^R */
-				scrolldown(buf, pos);
-			else if (write(mfd, &c, 1) == -1)
-				die("write:");
-			else if (bottom != TAILQ_FIRST(&head)) {
-				jumpdown(buf, pos);
+
+			/* iterate over the input buffer */
+			for (char *c = input; n-- > 0; c++) {
+				if (*c == 17) /* ^Q */
+					scrollup();
+				else if (*c == 18) /* ^R */
+					scrolldown(buf, pos);
+				else if (write(mfd, c, 1) == -1)
+					die("write:");
+				else if (bottom != TAILQ_FIRST(&head))
+					jumpdown(buf, pos);
 			}
 		}
 		if (pfd[1].revents & POLLIN) {
-			char input[BUFSIZ];
 			ssize_t n = read(mfd, input, sizeof input);
 
 			if (n == -1 && errno != EINTR)