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Viewing changes to bzrlib/_btree_serializer_py.py

  • Committer: Martin Pool
  • Date: 2009-11-16 02:26:32 UTC
  • mto: This revision was merged to the branch mainline in revision 4880.
  • Revision ID: mbp@sourcefrog.net-20091116022632-261trs2osy8oupe3
Convert version-info to use TextUIOutputStream

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bzrlib/_btree_serializer_py.py
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"""B+Tree index parsing."""
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from bzrlib import static_tuple
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def _parse_leaf_lines(bytes, key_length, ref_list_length):
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    lines = bytes.split('\n')
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    nodes = []
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    as_st = static_tuple.StaticTuple.from_sequence
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    stuple = static_tuple.StaticTuple
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    for line in lines[1:]:
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        if line == '':
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            return nodes
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        elements = line.split('\0', key_length)
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        # keys are tuples
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        key = as_st(elements[:key_length]).intern()
 
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        key = tuple(elements[:key_length])
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        line = elements[-1]
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        references, value = line.rsplit('\0', 1)
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        if ref_list_length:
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            ref_lists = []
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            for ref_string in references.split('\t'):
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                ref_list = as_st([as_st(ref.split('\0')).intern()
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                                  for ref in ref_string.split('\r') if ref])
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                ref_lists.append(ref_list)
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            ref_lists = as_st(ref_lists)
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            node_value = stuple(value, ref_lists)
 
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                ref_lists.append(tuple([
 
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                    tuple(ref.split('\0')) for ref in ref_string.split('\r') if ref
 
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                    ]))
 
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            ref_lists = tuple(ref_lists)
 
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            node_value = (value, ref_lists)
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        else:
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            node_value = stuple(value, stuple())
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        # No need for StaticTuple here as it is put into a dict
 
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            node_value = (value, ())
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        nodes.append((key, node_value))
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    return nodes
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