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  • Committer: Martin Pool
  • Date: 2009-11-15 22:10:30 UTC
  • mto: This revision was merged to the branch mainline in revision 4880.
  • Revision ID: mbp@sourcefrog.net-20091115221030-1jfiufckgs8t2whs
Add TextUIOutputStream coordinated with progress view

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bzrlib/ui/text.py
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            self._bytes_since_update = 0
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            self._last_transport_msg = msg
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            self._repaint()
 
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class TextUIOutputStream(object):
 
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    """Decorates an output stream so that the terminal is cleared before writing.
 
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    This is supposed to ensure that the progress bar does not conflict with bulk
 
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    text output.
 
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    """
 
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    # XXX: this does not handle the case of writing part of a line, then doing
 
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    # progress bar output: the progress bar will probably write over it.
 
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    # one option is just to buffer that text until we have a full line;
 
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    # another is to save and restore it
 
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    # XXX: might need to wrap more methods
 
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    def __init__(self, ui_factory, wrapped_stream):
 
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        self.ui_factory = ui_factory
 
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        self.wrapped_stream = wrapped_stream
 
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    def write(self, to_write):
 
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        self.ui_factory.clear_term()
 
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        self.wrapped_stream.write(to_write)