62 lines
1.8 KiB
Python
62 lines
1.8 KiB
Python
import csv, codecs
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from io import StringIO
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class UTF8Recoder:
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"""
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Iterator that reads an encoded stream and reencodes the input to UTF-8
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"""
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def __init__(self, f, encoding):
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self.reader = codecs.getreader(encoding)(f)
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def __iter__(self):
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return self
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def next(self):
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return self.reader.next().encode("utf-8")
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class UnicodeReader:
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"""
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A CSV reader which will iterate over lines in the CSV file "f",
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which is encoded in the given encoding.
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"""
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def __init__(self, f, dialect=csv.excel, encoding="utf-8", **kwds):
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f = UTF8Recoder(f, encoding)
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self.reader = csv.reader(f, dialect=dialect, **kwds)
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def next(self):
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row = self.reader.next()
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return [unicode(s, "utf-8") for s in row]
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def __iter__(self):
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return self
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class UnicodeWriter:
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"""
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A CSV writer which will write rows to CSV file "f",
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which is encoded in the given encoding.
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"""
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def __init__(self, f, dialect=csv.excel, encoding="utf-8", **kwds):
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# Redirect output to a queue
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self.queue = cStringIO.StringIO()
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self.writer = csv.writer(self.queue, dialect=dialect, **kwds)
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self.stream = f
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self.encoder = codecs.getincrementalencoder(encoding)()
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def writerow(self, row):
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self.writer.writerow([s.encode("utf-8") for s in row])
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# Fetch UTF-8 output from the queue ...
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data = self.queue.getvalue()
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data = data.decode("utf-8")
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# ... and reencode it into the target encoding
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data = self.encoder.encode(data)
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# write to the target stream
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self.stream.write(data)
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# empty queue
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self.queue.truncate(0)
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def writerows(self, rows):
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for row in rows:
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self.writerow(row)
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