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| Deletions are marked like this. | Additions are marked like this. |
| Line 8: | Line 8: |
| def __init__(self, stream, e, d, sr_class, sw_class): | def __init__(self, stream, e, d, class_sr, class_sw): |
| Line 10: | Line 10: |
| self.r = sr_class(stream) self.w = sw_class(stream) |
self.r = class_sr(stream) self.w = class_sw(stream) |
The codecs.StreamRecoder class re-encodes data between 2 character sets. Its constructor specifies the 2 character sets in different ways. The user should specify the internal character set as a pair of encoder and decoder. She should provide the external character set by supplying class definitions of a codec-specific StreamReader and StreamWriter.
Pseudocode of codecs.StreamRecoder of the Python2.5 version:
1 class StreamRecoder:
2 def __init__(self, stream, e, d, class_sr, class_sw):
3 # internal encoder, decoder^ ^external decoder, encoder
4 self.r = class_sr(stream)
5 self.w = class_sw(stream)
6 ...
7
8 def read(self):
9 return self.e(self.r.read())
10
11 def write(self, data):
12 return self.w.write(self.d(data))
See also: StreamReader, StreamWriter, StreamReaderWriter.