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Viewing changes to bzrlib/config.py

Start implementing a config stack.

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bzrlib/config.py
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        self._transport.put_file(self._filename, out_file)
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class ConfigStack(object):
 
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    """A stack of configurations where an option can be defined"""
 
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    def __init__(self, config_list):
 
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        self.list = config_list
 
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        for c in self.list:
 
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            # Sanity check
 
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            if not hasattr(c, 'get'):
 
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                raise AssertionError("%r does not provide a 'get' method"
 
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                                     % (c,))
 
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    def get(self, name):
 
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        """Return the value from the first definition found in the list"""
 
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        for c in self.list:
 
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            value = c.get(name)
 
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            if value is not None:
 
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                break
 
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        return value
 
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class cmd_config(commands.Command):
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    __doc__ = """Display, set or remove a configuration option.
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