Patch #1436130: codecs.lookup() now returns a CodecInfo object (a subclass

of tuple) that provides incremental decoders and encoders (a way to use
stateful codecs without the stream API). Functions
codecs.getincrementaldecoder() and codecs.getincrementalencoder() have
been added.

1 files changed, 17 insertions, 2 deletions

diff --git a/Lib/encodings/idna.py b/Lib/encodings/idna.py
index 3d3ed23..8bdae32 100644
--- a/Lib/encodings/idna.py
+++ b/Lib/encodings/idna.py
@@ -194,6 +194,14 @@ class Codec(codecs.Codec):
 
         return u".".join(result)+trailing_dot, len(input)
 
+class IncrementalEncoder(codecs.IncrementalEncoder):
+    def encode(self, input, final=False):
+        return Codec().encode(input, self.errors)[0]
+
+class IncrementalDecoder(codecs.IncrementalDecoder):
+    def decode(self, input, final=False):
+        return Codec().decode(input, self.errors)[0]
+
 class StreamWriter(Codec,codecs.StreamWriter):
     pass
 
@@ -203,5 +211,12 @@ class StreamReader(Codec,codecs.StreamReader):
 ### encodings module API
 
 def getregentry():
-
-    return (Codec().encode,Codec().decode,StreamReader,StreamWriter)
+    return codecs.CodecInfo(
+        name='idna',
+        encode=Codec().encode,
+        decode=Codec().decode,
+        incrementalencoder=IncrementalEncoder,
+        incrementaldecoder=IncrementalDecoder,
+        streamwriter=StreamWriter,
+        streamreader=StreamReader,
+    )