| author | Raphaël Gomès <rgomes@octobus.net> |
| Wed, 05 Jun 2019 17:58:34 +0200 | |
| changeset 42538 | 2db96bf84a8f |
| parent 41202 | e7a2cc84dbc0 |
| child 42730 | 92ac6b1697a7 |
| permissions | -rw-r--r-- |
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# revlogdeltas.py - constant used for revlog logic |
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# |
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# Copyright 2005-2007 Matt Mackall <mpm@selenic.com> |
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# Copyright 2018 Octobus <contact@octobus.net> |
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# |
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# This software may be used and distributed according to the terms of the |
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# GNU General Public License version 2 or any later version. |
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"""Helper class to compute deltas stored inside revlogs""" |
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from __future__ import absolute_import |
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from .. import ( |
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repository, |
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util, |
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) |
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# revlog header flags |
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REVLOGV0 = 0 |
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REVLOGV1 = 1 |
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# Dummy value until file format is finalized. |
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# Reminder: change the bounds check in revlog.__init__ when this is changed. |
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REVLOGV2 = 0xDEAD |
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# Shared across v1 and v2. |
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FLAG_INLINE_DATA = (1 << 16) |
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# Only used by v1, implied by v2. |
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FLAG_GENERALDELTA = (1 << 17) |
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REVLOG_DEFAULT_FLAGS = FLAG_INLINE_DATA |
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REVLOG_DEFAULT_FORMAT = REVLOGV1 |
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REVLOG_DEFAULT_VERSION = REVLOG_DEFAULT_FORMAT | REVLOG_DEFAULT_FLAGS |
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REVLOGV1_FLAGS = FLAG_INLINE_DATA | FLAG_GENERALDELTA |
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REVLOGV2_FLAGS = FLAG_INLINE_DATA |
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# revlog index flags |
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# For historical reasons, revlog's internal flags were exposed via the |
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# wire protocol and are even exposed in parts of the storage APIs. |
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# revision has censor metadata, must be verified |
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REVIDX_ISCENSORED = repository.REVISION_FLAG_CENSORED |
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# revision hash does not match data (narrowhg) |
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REVIDX_ELLIPSIS = repository.REVISION_FLAG_ELLIPSIS |
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# revision data is stored externally |
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REVIDX_EXTSTORED = repository.REVISION_FLAG_EXTSTORED |
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REVIDX_DEFAULT_FLAGS = 0 |
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# stable order in which flags need to be processed and their processors applied |
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REVIDX_FLAGS_ORDER = [ |
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REVIDX_ISCENSORED, |
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REVIDX_ELLIPSIS, |
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REVIDX_EXTSTORED, |
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] |
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REVIDX_KNOWN_FLAGS = util.bitsfrom(REVIDX_FLAGS_ORDER) |
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# bitmark for flags that could cause rawdata content change |
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REVIDX_RAWTEXT_CHANGING_FLAGS = REVIDX_ISCENSORED | REVIDX_EXTSTORED |
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SPARSE_REVLOG_MAX_CHAIN_LENGTH = 1000 |
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