From 7c330500655840fcabbf1c514f710f7ae811e7f6 Mon Sep 17 00:00:00 2001
From: pwhipp <paul.whipp@gmail.com>
Date: Tue, 14 Oct 2014 12:18:00 +1000
Subject: [PATCH] modified sha in the hope that it will use less memory for
 binary files that lack carriage returns (#180)

---
 documents/models.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/documents/models.py b/documents/models.py
index 8674679..f4aacd5 100644
--- a/documents/models.py
+++ b/documents/models.py
@@ -20,8 +20,11 @@
 
 def sha1(f):
     sha = hashlib.sha1()
-    for line in f:
-        sha.update(line)
+    while True:
+        chunk = f.read(4096)
+        if not chunk:
+            break
+        sha.update(chunk)
     return sha.hexdigest()