lel

commit eff5c89f690c55745e345cb81382fe8e3ee39606
parent 60e3e2ebae4f13828b0493193c9f7f4999c75fd7
Author: Jacob R. Edwards <jacobouno@protonmail.com>
Date:   Mon, 19 Apr 2021 16:18:23 -0700

Fix image navigation

Previously img.index could something invalid like -1.

Diffstat:
M
lel.c
 | 
19
++++++++++---------

1 file changed, 10 insertions(+), 9 deletions(-)
diff --git a/lel.c b/lel.c
@@ -213,11 +213,12 @@ getbin(char *s)
 static void
 deleteimg(void)
 {
-	ff_close(&img);
 	imgs[img.index] = NULL;
-	if (--nimgs < 1)
+	if (--nimgs <= 0)
 		exit(0);
 	nextimg();
+	if (imgs[img.index] == NULL)
+		previmg();
 }
 
 static void
@@ -262,9 +263,9 @@ reloadimg(void)
 static void
 nextimg(void)
 {
-	while (img.index < lastimg && imgs[++img.index] == NULL)
-		;
-	if (imgs[img.index] == NULL) {
+	if (img.index + 1 > lastimg)
+		return;
+	if (imgs[++img.index] == NULL) {
 		nextimg();
 	} else {
 		ff_close(&img);
@@ -275,10 +276,10 @@ nextimg(void)
 static void
 previmg(void)
 {
-	while (img.index > 0 && imgs[--img.index] == NULL)
-		;
-	if (imgs[img.index] == NULL) {
-		nextimg();
+	if (img.index - 1 < 0)
+		return;
+	if (imgs[--img.index] == NULL) {
+		previmg();
 	} else {
 		ff_close(&img);
 		reloadimg();