encodings_idna_missing_unicodedata.3.2.patch

--- Lib/encodings/idna.py.orig	2008-08-19 19:56:33.000000000 +0200
+++ Lib/encodings/idna.py	2012-04-26 13:24:31.450392161 +0200
@@ -1,35 +1,49 @@
 # This module implements the RFCs 3490 (IDNA) and 3491 (Nameprep)
 
-import stringprep, re, codecs
-from unicodedata import ucd_3_2_0 as unicodedata
+import re, codecs
+try:
+   import stringprep
+except ImportError:
+   stringprep = None
+try:
+   from unicodedata import ucd_3_2_0 as unicodedata
+except ImportError:
+   unicodedata = None
 
 # IDNA section 3.1
 dots = re.compile("[\u002E\u3002\uFF0E\uFF61]")
 
 # IDNA section 5
 ace_prefix = b"xn--"
 sace_prefix = "xn--"
 
 # This assumes query strings, so AllowUnassigned is true
 def nameprep(label):
+    # (StaticPython) The implementation is incorrect if unicodedata is false,
+    # but it works for ASCII domain names.
+    if not stringprep:
+        return label
     # Map
     newlabel = []
     for c in label:
         if stringprep.in_table_b1(c):
             # Map to nothing
             continue
         newlabel.append(stringprep.map_table_b2(c))
     label = "".join(newlabel)
 
     # Normalize
-    label = unicodedata.normalize("NFKC", label)
+    # (StaticPython) The implementation is incorrect if unicodedata is false,
+    # but it works for ASCII domain names.
+    if unicodedata:
+        label = unicodedata.normalize("NFKC", label)
 
     # Prohibit
     for c in label:
         if stringprep.in_table_c12(c) or \
            stringprep.in_table_c22(c) or \
            stringprep.in_table_c3(c) or \
            stringprep.in_table_c4(c) or \
            stringprep.in_table_c5(c) or \
            stringprep.in_table_c6(c) or \
            stringprep.in_table_c7(c) or \