From ae465352759c0bde5661910631c0d32c393a0a0a Mon Sep 17 00:00:00 2001
From: Simon Voordouw <simonvoordouw@gmail.com>
Date: Thu, 22 Jun 2017 14:31:32 +0200
Subject: [PATCH] exit if gcode file info could not be retrieved

---
 src/script/print-fetch.lua | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/script/print-fetch.lua b/src/script/print-fetch.lua
index 85c9896..aa76111 100755
--- a/src/script/print-fetch.lua
+++ b/src/script/print-fetch.lua
@@ -34,6 +34,11 @@ log("gcode server: " .. gcodeServer)
 
 local info = JSON:decode(io.popen("wget -qO - " .. gcodeServer .. "/info/" .. id):read("*a"))
 
+if info == nil then
+    log("could not retrieve file info")
+    return
+end
+
 local current_line = 0
 local total_lines = tonumber(info["lines"])
 local started = false