Mercurial > public > mercurial-scm > hg-stable

annotate mercurial/revlogutils/constants.py @ 47401:a669404f0f4a

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
revlog: add a function to build index entry tuple Keeping index entry as tuple make sense for performance reason, however it does not means we need to manually build that tuple for all piece of python code that are not performance critical. So we add a nice function responsible to build the tuple using argument using explicit keyword argument. Differential Revision: https://phab.mercurial-scm.org/D10793
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Sun, 30 May 2021 17:10:56 +0200
parents 7a0ec25d5836
children 2c6084f67a86
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
47260
130c9f7ed914 revlog: add a "data compression mode" entry in the index tuple
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47245
diff changeset
1 # revlogdeltas.py - constant used for revlog logic.
39356
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
2 #
46819
d4ba4d51f85f contributor: change mentions of mpm to olivia
Rapha?l Gom?s <rgomes@octobus.net>
parents: 46717
diff changeset
3 # Copyright 2005-2007 Olivia Mackall <olivia@selenic.com>
39356
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
46856
34e1fa4b548a revlog: move the details of revlog "v0" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46855
diff changeset
12 import struct
34e1fa4b548a revlog: move the details of revlog "v0" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46855
diff changeset
13
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43032
diff changeset
14 from ..interfaces import repository
47401
a669404f0f4a revlog: add a function to build index entry tuple
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47399
diff changeset
15 from .. import revlogutils
39356
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
16
47089
4c041c71ec01 revlog: introduce an explicit tracking of what the revlog is about
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46859
diff changeset
17 ### Internal utily constants
4c041c71ec01 revlog: introduce an explicit tracking of what the revlog is about
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46859
diff changeset
18
4c041c71ec01 revlog: introduce an explicit tracking of what the revlog is about
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46859
diff changeset
19 KIND_CHANGELOG = 1001 # over 256 to not be comparable with a bytes
4c041c71ec01 revlog: introduce an explicit tracking of what the revlog is about
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46859
diff changeset
20 KIND_MANIFESTLOG = 1002
4c041c71ec01 revlog: introduce an explicit tracking of what the revlog is about
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46859
diff changeset
21 KIND_FILELOG = 1003
4c041c71ec01 revlog: introduce an explicit tracking of what the revlog is about
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46859
diff changeset
22 KIND_OTHER = 1004
4c041c71ec01 revlog: introduce an explicit tracking of what the revlog is about
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46859
diff changeset
23
4c041c71ec01 revlog: introduce an explicit tracking of what the revlog is about
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46859
diff changeset
24 ALL_KINDS = {
4c041c71ec01 revlog: introduce an explicit tracking of what the revlog is about
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46859
diff changeset
25 KIND_CHANGELOG,
4c041c71ec01 revlog: introduce an explicit tracking of what the revlog is about
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46859
diff changeset
26 KIND_MANIFESTLOG,
4c041c71ec01 revlog: introduce an explicit tracking of what the revlog is about
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46859
diff changeset
27 KIND_FILELOG,
4c041c71ec01 revlog: introduce an explicit tracking of what the revlog is about
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46859
diff changeset
28 KIND_OTHER,
4c041c71ec01 revlog: introduce an explicit tracking of what the revlog is about
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46859
diff changeset
29 }
4c041c71ec01 revlog: introduce an explicit tracking of what the revlog is about
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46859
diff changeset
30
47399
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
31 ### Index entry key
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
32 #
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
33 #
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
34 # Internal details
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
35 # ----------------
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
36 #
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
37 # A large part of the revlog logic deals with revisions' "index entries", tuple
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
38 # objects that contains the same "items" whatever the revlog version.
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
39 # Different versions will have different ways of storing these items (sometimes
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
40 # not having them at all), but the tuple will always be the same. New fields
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
41 # are usually added at the end to avoid breaking existing code that relies
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
42 # on the existing order. The field are defined as follows:
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
43
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
44 # [0] offset:
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
45 # The byte index of the start of revision data chunk.
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
46 # That value is shifted up by 16 bits. use "offset = field >> 16" to
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
47 # retrieve it.
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
48 #
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
49 # flags:
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
50 # A flag field that carries special information or changes the behavior
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
51 # of the revision. (see `REVIDX_*` constants for details)
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
52 # The flag field only occupies the first 16 bits of this field,
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
53 # use "flags = field & 0xFFFF" to retrieve the value.
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
54 ENTRY_DATA_OFFSET = 0
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
55
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
56 # [1] compressed length:
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
57 # The size, in bytes, of the chunk on disk
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
58 ENTRY_DATA_COMPRESSED_LENGTH = 1
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
59
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
60 # [2] uncompressed length:
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
61 # The size, in bytes, of the full revision once reconstructed.
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
62 ENTRY_DATA_UNCOMPRESSED_LENGTH = 2
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
63
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
64 # [3] base rev:
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
65 # Either the base of the revision delta chain (without general
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
66 # delta), or the base of the delta (stored in the data chunk)
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
67 # with general delta.
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
68 ENTRY_DELTA_BASE = 3
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
69
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
70 # [4] link rev:
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
71 # Changelog revision number of the changeset introducing this
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
72 # revision.
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
73 ENTRY_LINK_REV = 4
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
74
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
75 # [5] parent 1 rev:
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
76 # Revision number of the first parent
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
77 ENTRY_PARENT_1 = 5
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
78
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
79 # [6] parent 2 rev:
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
80 # Revision number of the second parent
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
81 ENTRY_PARENT_2 = 6
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
82
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
83 # [7] node id:
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
84 # The node id of the current revision
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
85 ENTRY_NODE_ID = 7
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
86
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
87 # [8] sidedata offset:
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
88 # The byte index of the start of the revision's side-data chunk.
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
89 ENTRY_SIDEDATA_OFFSET = 8
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
90
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
91 # [9] sidedata chunk length:
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
92 # The size, in bytes, of the revision's side-data chunk.
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
93 ENTRY_SIDEDATA_COMPRESSED_LENGTH = 9
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
94
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
95 # [10] data compression mode:
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
96 # two bits that detail the way the data chunk is compressed on disk.
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
97 # (see "COMP_MODE_*" constants for details). For revlog version 0 and
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
98 # 1 this will always be COMP_MODE_INLINE.
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
99 ENTRY_DATA_COMPRESSION_MODE = 10
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
100
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
101 # [11] side-data compression mode:
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
102 # two bits that detail the way the sidedata chunk is compressed on disk.
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
103 # (see "COMP_MODE_*" constants for details)
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
104 ENTRY_SIDEDATA_COMPRESSION_MODE = 11
7a0ec25d5836 revlog: move entry documentation alongside new related constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47377
diff changeset
105
46855
aba724bf550e revlog: add some comment in the header sections
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46819
diff changeset
106 ### main revlog header
aba724bf550e revlog: add some comment in the header sections
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46819
diff changeset
107
47377
298d4400ea68 index: use an explicit constant for INDEX_HEADER format and use it for docket
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47281
diff changeset
108 # We cannot rely on Struct.format is inconsistent for python <=3.6 versus above
298d4400ea68 index: use an explicit constant for INDEX_HEADER format and use it for docket
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47281
diff changeset
109 INDEX_HEADER_FMT = b">I"
298d4400ea68 index: use an explicit constant for INDEX_HEADER format and use it for docket
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47281
diff changeset
110 INDEX_HEADER = struct.Struct(INDEX_HEADER_FMT)
46859
c6e23fb4bfb4 revlog: move the "index header" struct inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46858
diff changeset
111
46855
aba724bf550e revlog: add some comment in the header sections
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46819
diff changeset
112 ## revlog version
39356
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
113 REVLOGV0 = 0
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
114 REVLOGV1 = 1
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
115 # 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
116 REVLOGV2 = 0xDEAD
47277
921648d31553 changelogv2: use a dedicated version number
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47266
diff changeset
117 # Dummy value until file format is finalized.
921648d31553 changelogv2: use a dedicated version number
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47266
diff changeset
118 CHANGELOGV2 = 0xD34D
46855
aba724bf550e revlog: add some comment in the header sections
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46819
diff changeset
119
aba724bf550e revlog: add some comment in the header sections
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46819
diff changeset
120 ## global revlog header flags
41202
e7a2cc84dbc0 revlog: always enable generaldelta on version 2 revlogs
Gregory Szorc <gregory.szorc@gmail.com>
parents: 40048
diff changeset
121 # Shared across v1 and v2.
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43032
diff changeset
122 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
123 # Only used by v1, implied by v2.
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 43032
diff changeset
124 FLAG_GENERALDELTA = 1 << 17
39356
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
125 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
126 REVLOG_DEFAULT_FORMAT = REVLOGV1
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
127 REVLOG_DEFAULT_VERSION = REVLOG_DEFAULT_FORMAT | REVLOG_DEFAULT_FLAGS
47241
0e9105bf54cb revlog: unify checks for supported flag
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47094
diff changeset
128 REVLOGV0_FLAGS = 0
39356
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
129 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
130 REVLOGV2_FLAGS = FLAG_INLINE_DATA
47277
921648d31553 changelogv2: use a dedicated version number
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47266
diff changeset
131 CHANGELOGV2_FLAGS = 0
39356
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
132
46855
aba724bf550e revlog: add some comment in the header sections
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46819
diff changeset
133 ### individual entry
aba724bf550e revlog: add some comment in the header sections
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46819
diff changeset
134
46856
34e1fa4b548a revlog: move the details of revlog "v0" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46855
diff changeset
135 ## index v0:
34e1fa4b548a revlog: move the details of revlog "v0" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46855
diff changeset
136 # 4 bytes: offset
34e1fa4b548a revlog: move the details of revlog "v0" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46855
diff changeset
137 # 4 bytes: compressed length
34e1fa4b548a revlog: move the details of revlog "v0" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46855
diff changeset
138 # 4 bytes: base rev
34e1fa4b548a revlog: move the details of revlog "v0" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46855
diff changeset
139 # 4 bytes: link rev
34e1fa4b548a revlog: move the details of revlog "v0" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46855
diff changeset
140 # 20 bytes: parent 1 nodeid
34e1fa4b548a revlog: move the details of revlog "v0" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46855
diff changeset
141 # 20 bytes: parent 2 nodeid
34e1fa4b548a revlog: move the details of revlog "v0" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46855
diff changeset
142 # 20 bytes: nodeid
34e1fa4b548a revlog: move the details of revlog "v0" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46855
diff changeset
143 INDEX_ENTRY_V0 = struct.Struct(b">4l20s20s20s")
34e1fa4b548a revlog: move the details of revlog "v0" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46855
diff changeset
144
46857
cc65cea90edb revlog: move the details of revlog "v1" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46856
diff changeset
145 ## index v1
cc65cea90edb revlog: move the details of revlog "v1" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46856
diff changeset
146 # 6 bytes: offset
cc65cea90edb revlog: move the details of revlog "v1" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46856
diff changeset
147 # 2 bytes: flags
cc65cea90edb revlog: move the details of revlog "v1" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46856
diff changeset
148 # 4 bytes: compressed length
cc65cea90edb revlog: move the details of revlog "v1" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46856
diff changeset
149 # 4 bytes: uncompressed length
cc65cea90edb revlog: move the details of revlog "v1" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46856
diff changeset
150 # 4 bytes: base rev
cc65cea90edb revlog: move the details of revlog "v1" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46856
diff changeset
151 # 4 bytes: link rev
cc65cea90edb revlog: move the details of revlog "v1" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46856
diff changeset
152 # 4 bytes: parent 1 rev
cc65cea90edb revlog: move the details of revlog "v1" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46856
diff changeset
153 # 4 bytes: parent 2 rev
cc65cea90edb revlog: move the details of revlog "v1" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46856
diff changeset
154 # 32 bytes: nodeid
cc65cea90edb revlog: move the details of revlog "v1" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46856
diff changeset
155 INDEX_ENTRY_V1 = struct.Struct(b">Qiiiiii20s12x")
cc65cea90edb revlog: move the details of revlog "v1" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46856
diff changeset
156 assert INDEX_ENTRY_V1.size == 32 * 2
cc65cea90edb revlog: move the details of revlog "v1" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46856
diff changeset
157
46858
85e3a630cad9 revlog: move the details of revlog "v2" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46857
diff changeset
158 # 6 bytes: offset
85e3a630cad9 revlog: move the details of revlog "v2" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46857
diff changeset
159 # 2 bytes: flags
85e3a630cad9 revlog: move the details of revlog "v2" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46857
diff changeset
160 # 4 bytes: compressed length
85e3a630cad9 revlog: move the details of revlog "v2" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46857
diff changeset
161 # 4 bytes: uncompressed length
85e3a630cad9 revlog: move the details of revlog "v2" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46857
diff changeset
162 # 4 bytes: base rev
85e3a630cad9 revlog: move the details of revlog "v2" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46857
diff changeset
163 # 4 bytes: link rev
85e3a630cad9 revlog: move the details of revlog "v2" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46857
diff changeset
164 # 4 bytes: parent 1 rev
85e3a630cad9 revlog: move the details of revlog "v2" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46857
diff changeset
165 # 4 bytes: parent 2 rev
85e3a630cad9 revlog: move the details of revlog "v2" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46857
diff changeset
166 # 32 bytes: nodeid
85e3a630cad9 revlog: move the details of revlog "v2" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46857
diff changeset
167 # 8 bytes: sidedata offset
85e3a630cad9 revlog: move the details of revlog "v2" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46857
diff changeset
168 # 4 bytes: sidedata compressed length
47262
6bfa6c2c5f15 revlogv2: preserve the compression mode on disk
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47260
diff changeset
169 # 1 bytes: compression mode (2 lower bit are data_compression_mode)
6bfa6c2c5f15 revlogv2: preserve the compression mode on disk
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47260
diff changeset
170 # 19 bytes: Padding to align to 96 bytes (see RevlogV2Plan wiki page)
6bfa6c2c5f15 revlogv2: preserve the compression mode on disk
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47260
diff changeset
171 INDEX_ENTRY_V2 = struct.Struct(b">Qiiiiii20s12xQiB19x")
6bfa6c2c5f15 revlogv2: preserve the compression mode on disk
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47260
diff changeset
172 assert INDEX_ENTRY_V2.size == 32 * 3, INDEX_ENTRY_V2.size
46858
85e3a630cad9 revlog: move the details of revlog "v2" index inside revlog.utils.constants
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 46857
diff changeset
173
47281
25ce16bf724b changelogv2: use a dedicated on disk format for changelogv2
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47277
diff changeset
174 # 6 bytes: offset
25ce16bf724b changelogv2: use a dedicated on disk format for changelogv2
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47277
diff changeset
175 # 2 bytes: flags
25ce16bf724b changelogv2: use a dedicated on disk format for changelogv2
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47277
diff changeset
176 # 4 bytes: compressed length
25ce16bf724b changelogv2: use a dedicated on disk format for changelogv2
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47277
diff changeset
177 # 4 bytes: uncompressed length
25ce16bf724b changelogv2: use a dedicated on disk format for changelogv2
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47277
diff changeset
178 # 4 bytes: parent 1 rev
25ce16bf724b changelogv2: use a dedicated on disk format for changelogv2
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47277
diff changeset
179 # 4 bytes: parent 2 rev
25ce16bf724b changelogv2: use a dedicated on disk format for changelogv2
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47277
diff changeset
180 # 32 bytes: nodeid
25ce16bf724b changelogv2: use a dedicated on disk format for changelogv2
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47277
diff changeset
181 # 8 bytes: sidedata offset
25ce16bf724b changelogv2: use a dedicated on disk format for changelogv2
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47277
diff changeset
182 # 4 bytes: sidedata compressed length
25ce16bf724b changelogv2: use a dedicated on disk format for changelogv2
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47277
diff changeset
183 # 1 bytes: compression mode (2 lower bit are data_compression_mode)
25ce16bf724b changelogv2: use a dedicated on disk format for changelogv2
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47277
diff changeset
184 # 27 bytes: Padding to align to 96 bytes (see RevlogV2Plan wiki page)
25ce16bf724b changelogv2: use a dedicated on disk format for changelogv2
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47277
diff changeset
185 INDEX_ENTRY_CL_V2 = struct.Struct(b">Qiiii20s12xQiB27x")
25ce16bf724b changelogv2: use a dedicated on disk format for changelogv2
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47277
diff changeset
186 assert INDEX_ENTRY_CL_V2.size == 32 * 3, INDEX_ENTRY_V2.size
25ce16bf724b changelogv2: use a dedicated on disk format for changelogv2
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47277
diff changeset
187
39356
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
188 # revlog index flags
40048
8e398628a3f2 repository: define and use revision flag constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39523
diff changeset
189
8e398628a3f2 repository: define and use revision flag constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39523
diff changeset
190 # 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
191 # 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
192
8e398628a3f2 repository: define and use revision flag constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39523
diff changeset
193 # 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
194 REVIDX_ISCENSORED = repository.REVISION_FLAG_CENSORED
8e398628a3f2 repository: define and use revision flag constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39523
diff changeset
195 # 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
196 REVIDX_ELLIPSIS = repository.REVISION_FLAG_ELLIPSIS
8e398628a3f2 repository: define and use revision flag constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39523
diff changeset
197 # revision data is stored externally
8e398628a3f2 repository: define and use revision flag constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 39523
diff changeset
198 REVIDX_EXTSTORED = repository.REVISION_FLAG_EXTSTORED
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
199 # 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
200 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
201 REVIDX_DEFAULT_FLAGS = 0
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
202 # 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
203 REVIDX_FLAGS_ORDER = [
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
204 REVIDX_ISCENSORED,
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
205 REVIDX_ELLIPSIS,
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
206 REVIDX_EXTSTORED,
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
207 REVIDX_HASCOPIESINFO,
39356
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
208 ]
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
209
39356
729082bb9938 revlog: split constants into a new `revlogutils.constants` module
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
210 # bitmark for flags that could cause rawdata content change
47094
119790e1c67c cg4: introduce protocol flag to signify the presence of sidedata
Rapha?l Gom?s <rgomes@octobus.net>
parents: 47089
diff changeset
211 REVIDX_RAWTEXT_CHANGING_FLAGS = REVIDX_ISCENSORED | REVIDX_EXTSTORED
39523
b66ea3fc3a86 sparse-revlog: set max delta chain length to on thousand
Boris Feld <boris.feld@octobus.net>
parents: 39357
diff changeset
212
47260
130c9f7ed914 revlog: add a "data compression mode" entry in the index tuple
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47245
diff changeset
213 ## chunk compression mode constants:
130c9f7ed914 revlog: add a "data compression mode" entry in the index tuple
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47245
diff changeset
214 # These constants are used in revlog version >=2 to denote the compression used
130c9f7ed914 revlog: add a "data compression mode" entry in the index tuple
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47245
diff changeset
215 # for a chunk.
130c9f7ed914 revlog: add a "data compression mode" entry in the index tuple
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47245
diff changeset
216
47264
b876f0bf7366 revlog: introduce a plain compression mode
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47262
diff changeset
217 # Chunk use no compression, the data stored on disk can be directly use as
b876f0bf7366 revlog: introduce a plain compression mode
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47262
diff changeset
218 # chunk value. Without any header information prefixed.
b876f0bf7366 revlog: introduce a plain compression mode
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47262
diff changeset
219 COMP_MODE_PLAIN = 0
b876f0bf7366 revlog: introduce a plain compression mode
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47262
diff changeset
220
47266
ff9fd7107d11 revlog: implement a "default compression" mode
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47264
diff changeset
221 # Chunk use the "default compression" for the revlog (usually defined in the
ff9fd7107d11 revlog: implement a "default compression" mode
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47264
diff changeset
222 # revlog docket). A header is still used.
ff9fd7107d11 revlog: implement a "default compression" mode
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47264
diff changeset
223 #
ff9fd7107d11 revlog: implement a "default compression" mode
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47264
diff changeset
224 # XXX: keeping a header is probably not useful and we should probably drop it.
ff9fd7107d11 revlog: implement a "default compression" mode
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47264
diff changeset
225 #
ff9fd7107d11 revlog: implement a "default compression" mode
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47264
diff changeset
226 # XXX: The value of allow mixed type of compression in the revlog is unclear
ff9fd7107d11 revlog: implement a "default compression" mode
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47264
diff changeset
227 # and we should consider making PLAIN/DEFAULT the only available mode for
ff9fd7107d11 revlog: implement a "default compression" mode
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47264
diff changeset
228 # revlog v2, disallowing INLINE mode.
ff9fd7107d11 revlog: implement a "default compression" mode
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47264
diff changeset
229 COMP_MODE_DEFAULT = 1
ff9fd7107d11 revlog: implement a "default compression" mode
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47264
diff changeset
230
47260
130c9f7ed914 revlog: add a "data compression mode" entry in the index tuple
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47245
diff changeset
231 # Chunk use a compression mode stored "inline" at the start of the chunk
130c9f7ed914 revlog: add a "data compression mode" entry in the index tuple
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47245
diff changeset
232 # itself. This is the mode always used for revlog version "0" and "1"
47401
a669404f0f4a revlog: add a function to build index entry tuple
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47399
diff changeset
233 COMP_MODE_INLINE = revlogutils.COMP_MODE_INLINE
47260
130c9f7ed914 revlog: add a "data compression mode" entry in the index tuple
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47245
diff changeset
234
47241
0e9105bf54cb revlog: unify checks for supported flag
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47094
diff changeset
235 SUPPORTED_FLAGS = {
0e9105bf54cb revlog: unify checks for supported flag
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47094
diff changeset
236 REVLOGV0: REVLOGV0_FLAGS,
0e9105bf54cb revlog: unify checks for supported flag
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47094
diff changeset
237 REVLOGV1: REVLOGV1_FLAGS,
0e9105bf54cb revlog: unify checks for supported flag
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47094
diff changeset
238 REVLOGV2: REVLOGV2_FLAGS,
47277
921648d31553 changelogv2: use a dedicated version number
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47266
diff changeset
239 CHANGELOGV2: CHANGELOGV2_FLAGS,
47241
0e9105bf54cb revlog: unify checks for supported flag
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47094
diff changeset
240 }
0e9105bf54cb revlog: unify checks for supported flag
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47094
diff changeset
241
47242
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
242 _no = lambda flags: False
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
243 _yes = lambda flags: True
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
244
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
245
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
246 def _from_flag(flag):
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
247 return lambda flags: bool(flags & flag)
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
248
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
249
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
250 FEATURES_BY_VERSION = {
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
251 REVLOGV0: {
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
252 b'inline': _no,
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
253 b'generaldelta': _no,
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
254 b'sidedata': False,
47245
616b8f412676 revlogv2: introduce a very basic docket file
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47242
diff changeset
255 b'docket': False,
47242
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
256 },
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
257 REVLOGV1: {
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
258 b'inline': _from_flag(FLAG_INLINE_DATA),
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
259 b'generaldelta': _from_flag(FLAG_GENERALDELTA),
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
260 b'sidedata': False,
47245
616b8f412676 revlogv2: introduce a very basic docket file
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47242
diff changeset
261 b'docket': False,
47242
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
262 },
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
263 REVLOGV2: {
47245
616b8f412676 revlogv2: introduce a very basic docket file
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47242
diff changeset
264 # The point of inline-revlog is to reduce the number of files used in
616b8f412676 revlogv2: introduce a very basic docket file
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47242
diff changeset
265 # the store. Using a docket defeat this purpose. So we needs other
616b8f412676 revlogv2: introduce a very basic docket file
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47242
diff changeset
266 # means to reduce the number of files for revlogv2.
47242
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
267 b'inline': _no,
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
268 b'generaldelta': _yes,
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
269 b'sidedata': True,
47245
616b8f412676 revlogv2: introduce a very basic docket file
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47242
diff changeset
270 b'docket': True,
47242
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
271 },
47277
921648d31553 changelogv2: use a dedicated version number
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47266
diff changeset
272 CHANGELOGV2: {
921648d31553 changelogv2: use a dedicated version number
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47266
diff changeset
273 b'inline': _no,
921648d31553 changelogv2: use a dedicated version number
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47266
diff changeset
274 # General delta is useless for changelog since we don't do any delta
921648d31553 changelogv2: use a dedicated version number
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47266
diff changeset
275 b'generaldelta': _no,
921648d31553 changelogv2: use a dedicated version number
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47266
diff changeset
276 b'sidedata': True,
921648d31553 changelogv2: use a dedicated version number
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47266
diff changeset
277 b'docket': True,
921648d31553 changelogv2: use a dedicated version number
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47266
diff changeset
278 },
47242
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
279 }
4d1c893b9095 revlog: unify flag processing when loading index
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47241
diff changeset
280
47260
130c9f7ed914 revlog: add a "data compression mode" entry in the index tuple
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47245
diff changeset
281
39523
b66ea3fc3a86 sparse-revlog: set max delta chain length to on thousand
Boris Feld <boris.feld@octobus.net>
parents: 39357
diff changeset
282 SPARSE_REVLOG_MAX_CHAIN_LENGTH = 1000