From 7227a72112f85b053c1e274d052f40a8655bcfe8 Mon Sep 17 00:00:00 2001
From: Philipp Klaus <philipp.klaus@gmail.com>
Date: Mon, 15 Jan 2018 13:16:48 +0100
Subject: [PATCH] fonts: exit if not a single font was found

---
 brother_ql_web.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/brother_ql_web.py b/brother_ql_web.py
index 73abab9..64fea4e 100755
--- a/brother_ql_web.py
+++ b/brother_ql_web.py
@@ -250,6 +250,9 @@ def main():
     FONTS = get_fonts()
     if args.font_folder:
         FONTS.update(get_fonts(args.font_folder))
+    if not FONTS:
+        sys.stderr.write("Not a single font was found on your system. Please install some or use the \"--font-folder\" argument.\n")
+        sys.exit(2)
 
     for font in DEFAULT_FONTS:
         try: