From c173310a093ba1277f419190ecaa36cdb97455a6 Mon Sep 17 00:00:00 2001
From: John Hawthorn <john@hawthorn.email>
Date: Sat, 15 Sep 2018 14:15:28 -0700
Subject: Allow masking signals in tty_input_ready

---
 src/tty.c           | 16 ++++++++++++++--
 src/tty.h           |  2 +-
 src/tty_interface.c |  2 +-
 3 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/src/tty.c b/src/tty.c
index 5d7da64..a81fe85 100644
--- a/src/tty.c
+++ b/src/tty.c
@@ -6,6 +6,7 @@
 #include <termios.h>
 #include <sys/ioctl.h>
 #include <sys/select.h>
+#include <signal.h>
 
 #include "tty.h"
 
@@ -21,6 +22,10 @@ void tty_close(tty_t *tty) {
 	close(tty->fdin);
 }
 
+static void handle_sigwinch(int sig){
+	(void)sig;
+}
+
 void tty_init(tty_t *tty, const char *tty_filename) {
 	tty->fdin = open(tty_filename, O_RDONLY);
 	if (tty->fdin < 0) {
@@ -62,6 +67,8 @@ void tty_init(tty_t *tty, const char *tty_filename) {
 	tty_getwinsz(tty);
 
 	tty_setnormal(tty);
+
+	signal(SIGWINCH, handle_sigwinch);
 }
 
 void tty_getwinsz(tty_t *tty) {
@@ -89,14 +96,19 @@ char tty_getchar(tty_t *tty) {
 	}
 }
 
-int tty_input_ready(tty_t *tty, unsigned long timeout) {
+int tty_input_ready(tty_t *tty, unsigned long timeout, int return_on_signal) {
 	fd_set readfs;
 	FD_ZERO(&readfs);
 	FD_SET(tty->fdin, &readfs);
 
 	struct timespec ts = {timeout / 1000, (timeout % 1000) * 1000000};
 
-	int err = pselect(tty->fdin + 1, &readfs, NULL, NULL, &ts, NULL);
+	sigset_t mask;
+	sigemptyset(&mask);
+	if (!return_on_signal)
+		sigaddset(&mask, SIGWINCH);
+
+	int err = pselect(tty->fdin + 1, &readfs, NULL, NULL, &ts, &mask);
 
 	if (err < 0) {
 		return 0;
diff --git a/src/tty.h b/src/tty.h
index a21687d..66f48b9 100644
--- a/src/tty.h
+++ b/src/tty.h
@@ -17,7 +17,7 @@ void tty_close(tty_t *tty);
 void tty_init(tty_t *tty, const char *tty_filename);
 void tty_getwinsz(tty_t *tty);
 char tty_getchar(tty_t *tty);
-int tty_input_ready(tty_t *tty, unsigned long timeout);
+int tty_input_ready(tty_t *tty, int timeout, int return_on_signal);
 
 void tty_setfg(tty_t *tty, int fg);
 void tty_setinvert(tty_t *tty);
diff --git a/src/tty_interface.c b/src/tty_interface.c
index 5839af7..6482c68 100644
--- a/src/tty_interface.c
+++ b/src/tty_interface.c
@@ -373,7 +373,7 @@ int tty_interface_run(tty_interface_t *state) {
 				return state->exit;
 
 			draw(state);
-		} while (tty_input_ready(state->tty, state->ambiguous_key_pending ? KEYTIMEOUT : 0));
+		} while (tty_input_ready(state->tty, state->ambiguous_key_pending ? KEYTIMEOUT : 0, 0));
 
 		if (state->ambiguous_key_pending) {
 			char s[1] = "";
-- 
cgit v1.2.3