From dacf82263d40a6ee1e24e99bf3fb3fdf12345638 Mon Sep 17 00:00:00 2001
From: John-Mark Gurney <jmg@funkthat.com>
Date: Sat, 1 Mar 2008 02:06:52 -0800
Subject: [PATCH] add a magic resource list that prevents duplicate mime-types
 from being added... probably should add more matching, but this is good for
 now...

[git-p4: depot-paths = "//depot/": change = 1130]
---
 DIDLLite.py | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/DIDLLite.py b/DIDLLite.py
index 2917e1c..eba33e1 100644
--- a/DIDLLite.py
+++ b/DIDLLite.py
@@ -32,6 +32,21 @@ class Resource:
 
 		return root
 
+class ResourceList(list):
+	'''Special class to not overwrite mimetypes that already exist.'''
+	def __init__(self, *args, **kwargs):
+		self._mt = {}
+		list.__init__(self, *args, **kwargs)
+
+	def append(self, k):
+		assert isinstance(k, Resource)
+		mt = k.protocolInfo.split(':')[2]
+		if self._mt.has_key(mt):
+			return
+
+		list.append(self, k)
+		self._mt[mt] = k
+
 class Object(object):
 	"""The root class of the entire content directory class heirachy."""