status2d: improving cut status line protection, dwm will still exit if an invalid color code comes through (there is an explicit die call in drw_clr_create)

patch/bar_status2d.c

@@ -118,8 +118,9 @@ drawstatusbar(BarArg *a, char* stext)
 			while (text[++i] != '^') {
 				if (text[i] == 'c') {
 					char buf[8];
-					if (i + 7 > len) {
+					if (i + 7 >= len) {
 						i += 7;
+						len = 0;
 						break;
 					}
 					memcpy(buf, (char*)text+i+1, 7);
@@ -134,8 +135,9 @@ drawstatusbar(BarArg *a, char* stext)
 					i += 7;
 				} else if (text[i] == 'b') {
 					char buf[8];
-					if (i + 7 > len) {
+					if (i + 7 >= len) {
 						i += 7;
+						len = 0;
 						break;
 					}
 					memcpy(buf, (char*)text+i+1, 7);
@@ -204,11 +206,13 @@ drawstatusbar(BarArg *a, char* stext)
 
 			text = text + i + 1;
 			len -= i + 1;
-			i=-1;
+			i = -1;
 			isCode = 0;
+			if (len <= 0)
+				break;
 		}
 	}
-	if (!isCode) {
+	if (!isCode && len > 0) {
 		w = TEXTWM(text) - lrpad;
 		drw_text(drw, x, y, w, bh, 0, text, 0, True);
 		x += w;
@@ -216,7 +220,7 @@ drawstatusbar(BarArg *a, char* stext)
 	free(p);
 
 	drw_setscheme(drw, scheme[SchemeNorm]);
-	return len - 1;
+	return 1;
 }
 
 int