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Storing the error encoding in an "encoding" attribute "breaks" the python3 "input" function: In essence, builtin_input_impl does a getattr(sys.stdout, 'encoding'), which returns our error encoding instead of the "real" stdout encoding. In order to avoid this, we store the error encoding in an "_encoding" attribute. Making SafeWriter a new-style class simplifies the code a lot.
24 lines
832 B
Python
24 lines
832 B
Python
# be careful when debugging this code:
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# don't add print statements when setting sys.stdout = SafeWriter(sys.stdout)...
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class SafeWriter(object):
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"""
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Safely write an (unicode) str. In case of an "UnicodeEncodeError" the
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the str is encoded with the "encoding" encoding.
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All getattr, setattr calls are passed through to the "writer" instance.
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"""
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def __init__(self, writer, encoding='unicode_escape'):
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self._writer = writer
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self._encoding = encoding
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def write(self, s):
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try:
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self._writer.write(s)
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except UnicodeEncodeError as e:
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self._writer.write(s.encode(self._encoding))
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def __getattr__(self, name):
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return getattr(self._writer, name)
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def __setattr__(self, name, value):
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super(SafeWriter, self).__setattr__(name, value)
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