Use cgi.parse_header for main type parsing

Adds support for quoted string parameter values.

Author: scop

mimeparse.py

@@ -17,6 +17,7 @@
  - best_match():        Choose the mime-type with the highest quality ('q')
                           from a list of candidates.
 """
+import cgi
 from functools import reduce
 
 __version__ = '1.5.2'
@@ -40,11 +41,7 @@ def parse_mime_type(mime_type):
 
        ('application', 'xhtml', {'q', '0.5'})
     """
-    parts = mime_type.split(';')
-    params = dict([tuple([s.strip() for s in param.split('=', 1)])
-                  for param in parts[1:]
-                   ])
-    full_type = parts[0].strip()
+    full_type, params = cgi.parse_header(mime_type)
     # Java URLConnection class sends an Accept header that includes a
     # single '*'. Turn it into a legal wildcard.
     if full_type == '*':

testdata.json

@@ -41,6 +41,7 @@
 "parse_mime_type": [
     ["application/xhtml;q=0.5", ["application", "xhtml", {"q": "0.5"}]],
     ["application/xhtml;q=0.5;ver=1.2", ["application", "xhtml", {"q": "0.5", "ver": "1.2"}]],
+    ["application/xhtml;q=0.5;foo=\"bar quux\"", ["application", "xhtml", {"q": "0.5", "foo": "bar quux"}]],
     ["text", null],
     ["text/something/invalid", null]
 ]