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Viewing changes to bzrlib/workingtree_4.py

WorkingTree4: Implement filter_unversioned_files to use dirstate bisection.

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bzrlib/workingtree_4.py
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        self._dirstate = dirstate.DirState.on_file(local_path)
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        return self._dirstate
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    def filter_unversioned_files(self, paths):
 
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        """Filter out paths that are not versioned.
 
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        :return: set of paths.
 
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        """
 
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        # TODO: make a generic multi-bisect routine roughly that should list
 
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        # the paths, then process one half at a time recursively, and feed the
 
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        # results of each bisect in further still
 
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        paths = sorted(paths)
 
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        result = set()
 
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        state = self.current_dirstate()
 
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        # TODO we want a paths_to_dirblocks helper I think
 
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        for path in paths:
 
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            dirname, basename = os.path.split(path.encode('utf8'))
 
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            _, _, _, path_is_versioned = state._get_block_row_index(
 
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                dirname, basename)
 
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            if path_is_versioned:
 
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                result.add(path)
 
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        return result
 
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    def flush(self):
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        """Write all cached data to disk."""
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        if self._control_files._lock_mode != 'w':