added a jinja helper function for displaying file sizes

the_works/__init__.py

@@ -41,4 +41,18 @@ def create_app():
   app.config['SQLALCHEMY_RECORD_QUERIES'] = os.getenv("SQLALCHEMY_RECORD_QUERIES")
   print(f"Current Environment: " + app.config['ENVIRONMENT'])
 
+  # register helper function
+  app.jinja_env.globals.update(sizeof_fmt=sizeof_fmt)
+    
   return app
+
+
+# helper function to print formatted file size from https://stackoverflow.com/a/1094933 
+def sizeof_fmt(num, suffix="B"):
+  if type(num) == "String":
+    num = int(num)
+  for unit in ("", "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi"):
+    if abs(num) < 1024.0:
+      return f"{num:3.1f} {unit}{suffix}"
+    num /= 1024.0
+  return f"{num:.1f} Yi{suffix}"