lchat

commit ee4b1cfdb77b67d8e9ca491c3f2f11d9e3805851
parent 600166571bf2a893896e1fa37e1e134296b857b4
Author: Jan Klemkow <j.klemkow@wemelug.de>
Date:   Sun, 25 Oct 2015 01:55:15 +0200

fix lenght hanling

Diffstat:
M
slackline.c
 | 
11
+++++++++--

1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/slackline.c b/slackline.c
@@ -13,7 +13,11 @@ sl_init(void)
 		return NULL;
 
 	sl->bufsize = BUFSIZ;
-	sl->buf = malloc(sl->bufsize);
+	if ((sl->buf = malloc(sl->bufsize)) == NULL) {
+		free(sl);
+		return NULL;
+	}
+
 	sl->buf[0] = '\0';
 	sl->len = 0;
 	sl->cur = 0;
@@ -44,14 +48,17 @@ sl_keystroke(struct slackline *sl, int key)
 			sl->buf[sl->cur++] = key;
 			sl->buf[sl->cur] = '\0';
 		}
-
+		sl->len++;
 		return 0;
 	}
 
 	/* handle ctl keys */
 	switch (key) {
 	case 8:	/* backspace */
+		if (sl->cur == 0)
+			break;
 		sl->cur--;
+		sl->len--;
 		sl->buf[sl->cur] = '\0';
 		break;
 	}