Mercurial > public > mercurial-scm > hg-stable

annotate mercurial/revlogutils/constants.py @ 46529:83f037acf71a

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
nodemap: make `_persist_nodemap` a public function I will like to have a utility function using which we can directly write out nodemap for a repository without going through the recloning process. This function seems like the one containing important pieces for that. Let's make it public. Differential Revision: https://phab.mercurial-scm.org/D9932
author Pulkit Goyal <7895pulkit@gmail.com>
date Sun, 31 Jan 2021 23:34:59 +0530
parents 2d6aea053153
children 913485776542
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
39356
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
1 # revlogdeltas.py - constant used for revlog logic
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
2 #
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
3 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
4 # Copyright 2018 Octobus <contact@octobus.net>
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
5 #
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
6 # This software may be used and distributed according to the terms of the
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
7 # GNU General Public License version 2 or any later version.
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
8 """Helper class to compute deltas stored inside revlogs"""
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
9
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
10 from __future__ import absolute_import
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
11
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43032
diff changeset
12 from ..interfaces import repository
39356
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
13
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
14 # revlog header flags
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
15 REVLOGV0 = 0
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
16 REVLOGV1 = 1
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
17 # Dummy value until file format is finalized.
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
18 # Reminder: change the bounds check in revlog.__init__ when this is changed.
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
19 REVLOGV2 = 0xDEAD
41202
e7a2cc84dbc0 revlog: always enable generaldelta on version 2 revlogs
Gregory Szorc <gregory.szorc@gmail.com>
parents: 40048
diff changeset
20 # Shared across v1 and v2.
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43032
diff changeset
21 FLAG_INLINE_DATA = 1 << 16
41202
e7a2cc84dbc0 revlog: always enable generaldelta on version 2 revlogs
Gregory Szorc <gregory.szorc@gmail.com>
parents: 40048
diff changeset
22 # Only used by v1, implied by v2.
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43032
diff changeset
23 FLAG_GENERALDELTA = 1 << 17
39356
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
24 REVLOG_DEFAULT_FLAGS = FLAG_INLINE_DATA
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
25 REVLOG_DEFAULT_FORMAT = REVLOGV1
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
26 REVLOG_DEFAULT_VERSION = REVLOG_DEFAULT_FORMAT | REVLOG_DEFAULT_FLAGS
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
27 REVLOGV1_FLAGS = FLAG_INLINE_DATA | FLAG_GENERALDELTA
41202
e7a2cc84dbc0 revlog: always enable generaldelta on version 2 revlogs
Gregory Szorc <gregory.szorc@gmail.com>
parents: 40048
diff changeset
28 REVLOGV2_FLAGS = FLAG_INLINE_DATA
39356
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
29
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
30 # revlog index flags
40048
8e398628a3f2 repository: define and use revision flag constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39523
diff changeset
31
8e398628a3f2 repository: define and use revision flag constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39523
diff changeset
32 # For historical reasons, revlog's internal flags were exposed via the
8e398628a3f2 repository: define and use revision flag constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39523
diff changeset
33 # wire protocol and are even exposed in parts of the storage APIs.
8e398628a3f2 repository: define and use revision flag constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39523
diff changeset
34
8e398628a3f2 repository: define and use revision flag constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39523
diff changeset
35 # revision has censor metadata, must be verified
8e398628a3f2 repository: define and use revision flag constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39523
diff changeset
36 REVIDX_ISCENSORED = repository.REVISION_FLAG_CENSORED
8e398628a3f2 repository: define and use revision flag constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39523
diff changeset
37 # revision hash does not match data (narrowhg)
8e398628a3f2 repository: define and use revision flag constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39523
diff changeset
38 REVIDX_ELLIPSIS = repository.REVISION_FLAG_ELLIPSIS
8e398628a3f2 repository: define and use revision flag constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39523
diff changeset
39 # revision data is stored externally
8e398628a3f2 repository: define and use revision flag constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39523
diff changeset
40 REVIDX_EXTSTORED = repository.REVISION_FLAG_EXTSTORED
43032
a12a9af7536c sidedata: add a new revision flag constant for side data
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 42823
diff changeset
41 # revision data contains extra metadata not part of the official digest
a12a9af7536c sidedata: add a new revision flag constant for side data
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 42823
diff changeset
42 REVIDX_SIDEDATA = repository.REVISION_FLAG_SIDEDATA
45671
2d6aea053153 copies: add a HASCOPIESINFO flag to highlight rev with useful data
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43076
diff changeset
43 # revision changes files in a way that could affect copy tracing.
2d6aea053153 copies: add a HASCOPIESINFO flag to highlight rev with useful data
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43076
diff changeset
44 REVIDX_HASCOPIESINFO = repository.REVISION_FLAG_HASCOPIESINFO
39356
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
45 REVIDX_DEFAULT_FLAGS = 0
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
46 # stable order in which flags need to be processed and their processors applied
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
47 REVIDX_FLAGS_ORDER = [
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
48 REVIDX_ISCENSORED,
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
49 REVIDX_ELLIPSIS,
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
50 REVIDX_EXTSTORED,
43032
a12a9af7536c sidedata: add a new revision flag constant for side data
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 42823
diff changeset
51 REVIDX_SIDEDATA,
45671
2d6aea053153 copies: add a HASCOPIESINFO flag to highlight rev with useful data
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 43076
diff changeset
52 REVIDX_HASCOPIESINFO,
39356
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
53 ]
42747
92ac6b1697a7 flagutil: move REVIDX_KNOWN_FLAGS source of truth in flagutil (API)
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 41202
diff changeset
54
39356
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
55 # bitmark for flags that could cause rawdata content change
43032
a12a9af7536c sidedata: add a new revision flag constant for side data
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 42823
diff changeset
56 REVIDX_RAWTEXT_CHANGING_FLAGS = (
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43032
diff changeset
57 REVIDX_ISCENSORED | REVIDX_EXTSTORED | REVIDX_SIDEDATA
43032
a12a9af7536c sidedata: add a new revision flag constant for side data
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 42823
diff changeset
58 )
39523
b66ea3fc3a86 sparse-revlog: set max delta chain length to on thousand
Boris Feld <boris.feld@octobus.net>
parents: 39357
diff changeset
59
b66ea3fc3a86 sparse-revlog: set max delta chain length to on thousand
Boris Feld <boris.feld@octobus.net>
parents: 39357
diff changeset
60 SPARSE_REVLOG_MAX_CHAIN_LENGTH = 1000