[python] Jak nahradit incremental codecs z Pythonu 2.5 v Pythonu 2.4

[Ondrej Beran]

Ahoj vsichni,


V aplikaci pro Python 2.5 jsem pouzil podobny UnicodeWriter, jako je
popsan v Python Library reference v kapitole 9.1.15 Examples na export
dat ve formatu CSV, kde tomu predhodim seznam hodnot, stream, dialekt,
kodovani, oddelovac, uvozovky a rezim quotovani.

ted bych ten kod potreboval portovat pod Python 2.4(.4), kde ty
inkrementalni kodeky nejsou. Jak se to tam dela?

Mam to udelany takhle:

    def __init__(self, f, dialect=csv.excel, encoding="utf-8", **kwds):
        # Redirect output to a queue
        self.queue = cStringIO.StringIO()
        self.writer = csv.writer(self.queue, dialect=dialect, **kwds)
        self.stream = f
        self.encoder = codecs.getincrementalencoder(encoding)()

    def writerow(self, row):
        self.writer.writerow([s.encode("utf-8") for s in row])
        # Fetch UTF-8 output from the queue ...
        data = self.queue.getvalue()
        data = data.decode("utf-8")
        # ... and reencode it into the target encoding
        data = self.encoder.encode(data)
        # write to the target stream
        self.stream.write(data)
        # empty queue
        self.queue.truncate(0)



Diky za pomoc
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