Flatten titles in SectionContainer.filter()

plex/core/helpers.py

@@ -1,3 +1,33 @@
+import re
+import unicodedata
+
+def flatten(text):
+    if text is None:
+        return None
+
+    # Normalize `text` to ascii
+    text = normalize(text)
+
+    # Remove special characters
+    text = re.sub('[^A-Za-z0-9\s]+', '', text)
+
+    # Merge duplicate spaces
+    text = ' '.join(text.split())
+
+    # Convert to lower-case
+    return text.lower()
+
+def normalize(text):
+    if text is None:
+        return None
+
+    # Normalize unicode characters
+    if type(text) is unicode:
+        text = unicodedata.normalize('NFKD', text)
+
+    # Ensure text is ASCII, ignore unknown characters
+    return text.encode('ascii', 'ignore')
+
 def to_iterable(value):
     if value is None:
         return None

plex/objects/library/container.py

@@ -1,4 +1,4 @@
-from plex.core.helpers import to_iterable
+from plex.core.helpers import flatten, to_iterable
 from plex.objects.core.base import Property
 from plex.objects.container import Container
 from plex.objects.library.section import Section
@@ -61,8 +61,8 @@ def filter(self, types=None, keys=None, titles=None):
         titles = to_iterable(titles)
 
         if titles:
-            # Normalize titles
-            titles = [x.lower() for x in titles]
+            # Flatten titles
+            titles = [flatten(x) for x in titles]
 
         for section in self:
             if not self.filter_passes(types, section.type):
@@ -71,7 +71,7 @@ def filter(self, types=None, keys=None, titles=None):
             if not self.filter_passes(keys, section.key):
                 continue
 
-            if not self.filter_passes(titles, section.title.lower()):
+            if not self.filter_passes(titles, flatten(section.title)):
                 continue
 
             yield section