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, 16 insertions, 2 deletions

diff --git a/Lib/encodings/mbcs.py b/Lib/encodings/mbcs.py
index c79f47c3af..14db973af7 100644
--- a/Lib/encodings/mbcs.py
+++ b/Lib/encodings/mbcs.py
@@ -18,6 +18,13 @@ class Codec(codecs.Codec):
     encode = codecs.mbcs_encode
     decode = codecs.mbcs_decode
 
+class IncrementalEncoder(codecs.IncrementalEncoder):
+    def encode(self, input, final=False):
+        return codecs.mbs_encode(input,self.errors)[0]
+
+class IncrementalDecoder(codecs.IncrementalDecoder):
+    def decode(self, input, final=False):
+        return codecs.mbs_decode(input,self.errors)[0]
 class StreamWriter(Codec,codecs.StreamWriter):
     pass
 
@@ -32,5 +39,12 @@ class StreamConverter(StreamWriter,StreamReader):
 ### encodings module API
 
 def getregentry():
-
-    return (Codec.encode,Codec.decode,StreamReader,StreamWriter)
+    return codecs.CodecInfo(
+        name='mbcs',
+        encode=Codec.encode,
+        decode=Codec.decode,
+        incrementalencoder=IncrementalEncoder,
+        incrementaldecoder=IncrementalDecoder,
+        streamreader=StreamReader,
+        streamwriter=StreamWriter,
+    )