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bzrlib/export/dir_exporter.py
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    )
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def dir_exporter_generator(tree, dest, root, subdir=None, filtered=False, 
 
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def dir_exporter_generator(tree, dest, root, subdir=None, filtered=False,
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                           force_mtime=None, fileobj=None):
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    """Return a generator that exports this tree to a new directory.
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        if e.errno == errno.EEXIST:
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            # check if directory empty
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            if os.listdir(dest) != []:
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                raise errors.BzrError("Can't export tree to non-empty directory.")
 
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                raise errors.BzrError(
 
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                    "Can't export tree to non-empty directory.")
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        else:
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            raise
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    # Iterate everything, building up the files we will want to export, and
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    for _ in dir_exporter_generator(tree, dest, root, subdir, filtered,
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                                    force_mtime, fileobj):
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        pass
 
 
b'\\ No newline at end of file'
 
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        pass