From 0186e2551eb775ff19f7fda52025758f6f73e36e Mon Sep 17 00:00:00 2001
From: Dan Howe <d.howe@wrl.unsw.edu.au>
Date: Thu, 12 Apr 2018 11:17:54 +1000
Subject: [PATCH] Fix error handling for pdfs whose info cannot be read

---
 scripts/pdf_unlock.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/scripts/pdf_unlock.py b/scripts/pdf_unlock.py
index 472a51c..707716d 100644
--- a/scripts/pdf_unlock.py
+++ b/scripts/pdf_unlock.py
@@ -116,7 +116,11 @@ def pdf_unlock(pdf_file, overwrite=False):
         return
 
     # Skip file if it is not encrypted
-    if not isencrypted(pdf_file):
+    try:
+        if not isencrypted(pdf_file):
+            return
+    # SKip file if pdf info cannot be read
+    except AttributeError:
         return
 
     # Get name of Ghostscript executable