Add quoted-printable codec

Lib/encodings/aliases.py

@@ -87,5 +87,8 @@ aliases = {
     'zip': 'zlib_codec',
     'hex': 'hex_codec',
     'uu': 'uu_codec',
+    'quopri': 'quopri_codec',
+    'quotedprintable': 'quopri_codec',
+    'quoted_printable': 'quopri_codec',
 
 }

Lib/encodings/quopri_codec.py

@@ -0,0 +1,56 @@
+"""Codec for quoted-printable encoding.
+
+Like base64 and rot13, this returns Python strings, not Unicode.
+"""
+
+import codecs, quopri
+try:
+    from cStringIO import StringIO
+except ImportError:
+    from StringIO import StringIO
+
+def quopri_encode(input, errors='strict'):
+    """Encode the input, returning a tuple (output object, length consumed).
+
+    errors defines the error handling to apply. It defaults to
+    'strict' handling which is the only currently supported
+    error handling for this codec.
+
+    """
+    assert errors == 'strict'
+    f = StringIO(input)
+    g = StringIO()
+    quopri.encode(f, g, 1)
+    output = g.getvalue()
+    return (output, len(input))
+
+def quopri_decode(input, errors='strict'):
+    """Decode the input, returning a tuple (output object, length consumed).
+
+    errors defines the error handling to apply. It defaults to
+    'strict' handling which is the only currently supported
+    error handling for this codec.
+
+    """
+    assert errors == 'strict'
+    f = StringIO(input)
+    g = StringIO()
+    quopri.decode(f, g)
+    output = g.getvalue()
+    return (output, len(input))
+
+class Codec(codecs.Codec):
+
+    encode = quopri_encode
+    decode = quopri_decode
+
+class StreamWriter(Codec, codecs.StreamWriter):
+    pass
+
+class StreamReader(Codec,codecs.StreamReader):
+    pass
+
+# encodings module API
+
+def getregentry():
+    return (quopri_encode, quopri_decode, StreamReader, StreamWriter)