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Merge bzr.dev.

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bzrlib/ui/text.py
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import bzrlib.progress
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from bzrlib.symbol_versioning import *
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from bzrlib.ui import UIFactory
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class TextUIFactory(UIFactory):
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from bzrlib.ui import CLIUIFactory
 
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class TextUIFactory(CLIUIFactory):
 
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    """A UI factory for Text user interefaces."""
 
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    def __init__(self,
 
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                 bar_type=None,
 
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                 stdout=None,
 
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                 stderr=None):
 
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        """Create a TextUIFactory.
 
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        :param bar_type: The type of progress bar to create. It defaults to 
 
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                         letting the bzrlib.progress.ProgressBar factory auto
 
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                         select.
 
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        """
 
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        super(TextUIFactory, self).__init__()
 
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        self._bar_type = bar_type
 
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        if stdout is None:
 
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            self.stdout = sys.stdout
 
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        else:
 
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            self.stdout = stdout
 
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        if stderr is None:
 
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            self.stderr = sys.stderr
 
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        else:
 
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            self.stderr = stderr
 
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    def prompt(self, prompt):
 
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        """Emit prompt on the CLI."""
 
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        self.stdout.write(prompt + "? [y/n]:")
 
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    @deprecated_method(zero_eight)
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    def progress_bar(self):
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        """See UIFactory.nested_progress_bar()."""
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        may return a tty or dots bar depending on the terminal.
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        """
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        if self._progress_bar_stack is None:
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            self._progress_bar_stack = bzrlib.progress.ProgressBarStack()
 
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            self._progress_bar_stack = bzrlib.progress.ProgressBarStack(
 
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                klass=self._bar_type)
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        return self._progress_bar_stack.get_nested()
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    def clear_term(self):