Add FilesystemObject.format method to format all fields in

a nice and deterministic manner. "Nice" here means that
the "Name:" field comes first. "Deterministic" means the
other fields come in the same order every time.

1 files changed, 7 insertions, 1 deletions

diff --git a/summainlib.py b/summainlib.py
index db66172..29ae21e 100644
--- a/summainlib.py
+++ b/summainlib.py
@@ -38,7 +38,7 @@ class FilesystemObject(object):
                  open_file=None, readlink=None):
         stat_result = stat_result or os.lstat(filename)
         sha1 = sha1 or hashlib.sha1()
-        self.open_file = open_file or self.open_file
+        self.open_file = open_file or file
         readlink = readlink or os.readlink
         
         self.values = dict()
@@ -89,3 +89,9 @@ class FilesystemObject(object):
         
     def __getitem__(self, key):
         return self.values.get(key, '')
+        
+    def format(self): # pragma: no cover
+        keys = ['Name'] + [x 
+                           for x in sorted(self.values.keys())
+                           if x != 'Name']
+        return ''.join('%s: %s\n' % (key, self[key]) for key in keys)