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# Copyright (C) 2007 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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from bzrlib import errors
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def _load_data_py(kndx, fp):
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"""Read in a knit index."""
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history = kndx._history
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# readlines reads the whole file at once:
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# bad for transports like http, good for local disk
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# we save 60 ms doing this one change (
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# from calling readline each time to calling
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# probably what we want for nice behaviour on
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# http is a incremental readlines that yields, or
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# a check for local vs non local indexes,
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history_top = len(history) - 1
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for line in fp.readlines():
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if len(rec) < 5 or rec[-1] != ':':
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# FIXME: in the future we should determine if its a
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# short write - and ignore it
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# or a different failure, and raise. RBC 20060407
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for value in rec[4:-1]:
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# uncompressed reference
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parent_id = history[int(value)]
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parents.append(parent_id)
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except (IndexError, ValueError), e:
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# The parent could not be decoded to get its parent row. This
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# at a minimum will cause this row to have wrong parents, or
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# even to apply a delta to the wrong base and decode
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# incorrectly. its therefore not usable, and because we have
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# encountered a situation where a new knit index had this
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# corrupt we can't asssume that no other rows referring to the
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# index of this record actually mean the subsequent uncorrupt
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raise errors.KnitCorrupt(kndx._filename, "line %r: %s" % (rec, e))
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version_id, options, pos, size = rec[:4]
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version_id = version_id
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raise errors.KnitCorrupt(kndx._filename,
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"invalid position on line %r: %s"
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raise errors.KnitCorrupt(kndx._filename,
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"invalid size on line %r: %s"
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# See kndx._cache_version
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# only want the _history index to reference the 1st
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# index entry for version_id
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if version_id not in cache:
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history.append(version_id)
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index = cache[version_id][5]
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cache[version_id] = (version_id,
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# end kndx._cache_version
added
removed
bzrlib/_knit_load_data_py.py
