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  • Committer: Ian Clatworthy
  • Date: 2008-12-18 06:41:29 UTC
  • mto: (4171.1.1 ianc-integration)
  • mto: This revision was merged to the branch mainline in revision 4173.
  • Revision ID: ian.clatworthy@canonical.com-20081218064129-ifzxuk0lbftgf67v
add and use supports_content_filtering API

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bzrlib/tree.py
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        """
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        raise NotImplementedError(self.walkdirs)
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    def supports_content_filtering(self):
 
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        return False
 
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    def _content_filter_stack(self, path=None, file_id=None):
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        """The stack of content filters for a path.
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        """The stack of content filters for a path if filtering is supported.
 
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        Readers will be applied in first-to-last order.
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        Writers will be applied in last-to-first order.
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        Either the path or the file-id needs to be provided.
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            note("*** %s content-filter: %s => %r" % (path,prefs,stk))
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        return stk
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    def _content_filter_stack_provider(self):
 
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        """A function that returns a stack of ContentFilters.
 
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        The function takes a path (relative to the top of the tree) and a
 
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        file-id as parameters.
 
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        :return: None if content filtering is not supported by this tree.
 
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        """
 
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        if self.supports_content_filtering():
 
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            return lambda path, file_id: \
 
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                    self._content_filter_stack(path, file_id)
 
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        else:
 
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            return None
 
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    def iter_search_rules(self, path_names, pref_names=None,
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        _default_searcher=rules._per_user_searcher):
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        """Find the preferences for filenames in a tree.