--- a/decoupage/formatters.py	Mon Sep 06 15:25:44 2010 -0700
+++ b/decoupage/formatters.py	Wed Sep 08 23:12:57 2010 -0700
@@ -96,6 +96,30 @@
             data['files'] = list(reversed(data['files']))
     
 
+class Order(object):
+    """
+    put the files in a particular order
+    """
+    def __init__(self, pattern):
+        if '=' in pattern:
+            key, value = pattern.split('=', 1)
+            assert key == 'file'
+            self.file = value
+        else:
+            self.order = [i.strip() for i in pattern.split(',')]
+    
+    def __call__(self, request, data):
+
+        if self.file:
+            raise NotImplementedError
+
+        files = []
+        file_hash = dict([(i['name'], i) for i in data['files']])
+        for f in self.order:
+            files.append(file_hash.get(f, None))
+        files = [ i for i in files if i is not None ]
+
+
 class FilenameDescription(FormatterBase):
     """
     obtain the description from the filename