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Viewing changes to bzrlib/btree_index.py

(jameinel) Allow 'bzr serve' to interpret SIGHUP as a graceful shutdown.
 (bug #795025) (John A Meinel)

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bzrlib/btree_index.py
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"""B+Tree indices"""
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from __future__ import absolute_import
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import cStringIO
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from bzrlib.lazy_import import lazy_import
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            flag when writing out. This is used by the _spill_mem_keys_to_disk
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            functionality.
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        """
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        new_leaf = False
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        if rows[-1].writer is None:
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            # opening a new leaf chunk;
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            new_leaf = True
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            for pos, internal_row in enumerate(rows[:-1]):
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                # flesh out any internal nodes that are needed to
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                # preserve the height of the tree
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                optimize_for_size=self._optimize_for_size)
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            rows[-1].writer.write(_LEAF_FLAG)
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        if rows[-1].writer.write(line):
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            # if we failed to write, despite having an empty page to write to,
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            # then line is too big. raising the error avoids infinite recursion
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            # searching for a suitably large page that will not be found.
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            if new_leaf:
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                raise errors.BadIndexKey(string_key)
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            # this key did not fit in the node:
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            rows[-1].finish_node()
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            key_line = string_key + "\n"