mercurial-scm/hg: mercurial/revlogutils/constants.py@aba724bf550e (annotated)

39329 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	#
46819 d4ba4d51f85f contributor: change mentions of mpm to olivia Rapha?l Gom?s <rgomes@octobus.net> parents: 46704 diff changeset	3	# Copyright 2005-2007 Olivia Mackall <olivia@selenic.com>
39329 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
39329 729082bb9938 revlog: split constants into a new `revlogutils.constants` module Boris Feld <boris.feld@octobus.net> parents: diff changeset	13
46855 aba724bf550e revlog: add some comment in the header sections Pierre-Yves David <pierre-yves.david@octobus.net> parents: 46819 diff changeset	14	### main revlog header
aba724bf550e revlog: add some comment in the header sections Pierre-Yves David <pierre-yves.david@octobus.net> parents: 46819 diff changeset	15
aba724bf550e revlog: add some comment in the header sections Pierre-Yves David <pierre-yves.david@octobus.net> parents: 46819 diff changeset	16	## revlog version
39329 729082bb9938 revlog: split constants into a new `revlogutils.constants` module Boris Feld <boris.feld@octobus.net> parents: diff changeset	17	REVLOGV0 = 0
729082bb9938 revlog: split constants into a new `revlogutils.constants` module Boris Feld <boris.feld@octobus.net> parents: diff changeset	18	REVLOGV1 = 1
729082bb9938 revlog: split constants into a new `revlogutils.constants` module Boris Feld <boris.feld@octobus.net> parents: diff changeset	19	# 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	20	REVLOGV2 = 0xDEAD
46855 aba724bf550e revlog: add some comment in the header sections Pierre-Yves David <pierre-yves.david@octobus.net> parents: 46819 diff changeset	21
aba724bf550e revlog: add some comment in the header sections Pierre-Yves David <pierre-yves.david@octobus.net> parents: 46819 diff changeset	22	## global revlog header flags
41202 e7a2cc84dbc0 revlog: always enable generaldelta on version 2 revlogs Gregory Szorc <gregory.szorc@gmail.com> parents: 40047 diff changeset	23	# Shared across v1 and v2.
43076 2372284d9457 formatting: blacken the codebase Augie Fackler <augie@google.com> parents: 43032 diff changeset	24	FLAG_INLINE_DATA = 1 << 16
41202 e7a2cc84dbc0 revlog: always enable generaldelta on version 2 revlogs Gregory Szorc <gregory.szorc@gmail.com> parents: 40047 diff changeset	25	# Only used by v1, implied by v2.
43076 2372284d9457 formatting: blacken the codebase Augie Fackler <augie@google.com> parents: 43032 diff changeset	26	FLAG_GENERALDELTA = 1 << 17
39329 729082bb9938 revlog: split constants into a new `revlogutils.constants` module Boris Feld <boris.feld@octobus.net> parents: diff changeset	27	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	28	REVLOG_DEFAULT_FORMAT = REVLOGV1
729082bb9938 revlog: split constants into a new `revlogutils.constants` module Boris Feld <boris.feld@octobus.net> parents: diff changeset	29	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	30	REVLOGV1_FLAGS = FLAG_INLINE_DATA \| FLAG_GENERALDELTA
41202 e7a2cc84dbc0 revlog: always enable generaldelta on version 2 revlogs Gregory Szorc <gregory.szorc@gmail.com> parents: 40047 diff changeset	31	REVLOGV2_FLAGS = FLAG_INLINE_DATA
39329 729082bb9938 revlog: split constants into a new `revlogutils.constants` module Boris Feld <boris.feld@octobus.net> parents: diff changeset	32
46855 aba724bf550e revlog: add some comment in the header sections Pierre-Yves David <pierre-yves.david@octobus.net> parents: 46819 diff changeset	33	### individual entry
aba724bf550e revlog: add some comment in the header sections Pierre-Yves David <pierre-yves.david@octobus.net> parents: 46819 diff changeset	34
39329 729082bb9938 revlog: split constants into a new `revlogutils.constants` module Boris Feld <boris.feld@octobus.net> parents: diff changeset	35	# revlog index flags
40047 8e398628a3f2 repository: define and use revision flag constants Gregory Szorc <gregory.szorc@gmail.com> parents: 39506 diff changeset	36
8e398628a3f2 repository: define and use revision flag constants Gregory Szorc <gregory.szorc@gmail.com> parents: 39506 diff changeset	37	# 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: 39506 diff changeset	38	# 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: 39506 diff changeset	39
8e398628a3f2 repository: define and use revision flag constants Gregory Szorc <gregory.szorc@gmail.com> parents: 39506 diff changeset	40	# revision has censor metadata, must be verified
8e398628a3f2 repository: define and use revision flag constants Gregory Szorc <gregory.szorc@gmail.com> parents: 39506 diff changeset	41	REVIDX_ISCENSORED = repository.REVISION_FLAG_CENSORED
8e398628a3f2 repository: define and use revision flag constants Gregory Szorc <gregory.szorc@gmail.com> parents: 39506 diff changeset	42	# revision hash does not match data (narrowhg)
8e398628a3f2 repository: define and use revision flag constants Gregory Szorc <gregory.szorc@gmail.com> parents: 39506 diff changeset	43	REVIDX_ELLIPSIS = repository.REVISION_FLAG_ELLIPSIS
8e398628a3f2 repository: define and use revision flag constants Gregory Szorc <gregory.szorc@gmail.com> parents: 39506 diff changeset	44	# revision data is stored externally
8e398628a3f2 repository: define and use revision flag constants Gregory Szorc <gregory.szorc@gmail.com> parents: 39506 diff changeset	45	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: 42813 diff changeset	46	# 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: 42813 diff changeset	47	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	48	# 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	49	REVIDX_HASCOPIESINFO = repository.REVISION_FLAG_HASCOPIESINFO
39329 729082bb9938 revlog: split constants into a new `revlogutils.constants` module Boris Feld <boris.feld@octobus.net> parents: diff changeset	50	REVIDX_DEFAULT_FLAGS = 0
729082bb9938 revlog: split constants into a new `revlogutils.constants` module Boris Feld <boris.feld@octobus.net> parents: diff changeset	51	# 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	52	REVIDX_FLAGS_ORDER = [
729082bb9938 revlog: split constants into a new `revlogutils.constants` module Boris Feld <boris.feld@octobus.net> parents: diff changeset	53	REVIDX_ISCENSORED,
729082bb9938 revlog: split constants into a new `revlogutils.constants` module Boris Feld <boris.feld@octobus.net> parents: diff changeset	54	REVIDX_ELLIPSIS,
729082bb9938 revlog: split constants into a new `revlogutils.constants` module Boris Feld <boris.feld@octobus.net> parents: diff changeset	55	REVIDX_EXTSTORED,
43032 a12a9af7536c sidedata: add a new revision flag constant for side data Pierre-Yves David <pierre-yves.david@octobus.net> parents: 42813 diff changeset	56	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	57	REVIDX_HASCOPIESINFO,
39329 729082bb9938 revlog: split constants into a new `revlogutils.constants` module Boris Feld <boris.feld@octobus.net> parents: diff changeset	58	]
42730 92ac6b1697a7 flagutil: move REVIDX_KNOWN_FLAGS source of truth in flagutil (API) Pierre-Yves David <pierre-yves.david@octobus.net> parents: 41202 diff changeset	59
39329 729082bb9938 revlog: split constants into a new `revlogutils.constants` module Boris Feld <boris.feld@octobus.net> parents: diff changeset	60	# 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: 42813 diff changeset	61	REVIDX_RAWTEXT_CHANGING_FLAGS = (
43076 2372284d9457 formatting: blacken the codebase Augie Fackler <augie@google.com> parents: 43032 diff changeset	62	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: 42813 diff changeset	63	)
39506 b66ea3fc3a86 sparse-revlog: set max delta chain length to on thousand Boris Feld <boris.feld@octobus.net> parents: 39330 diff changeset	64
b66ea3fc3a86 sparse-revlog: set max delta chain length to on thousand Boris Feld <boris.feld@octobus.net> parents: 39330 diff changeset	65	SPARSE_REVLOG_MAX_CHAIN_LENGTH = 1000

author	Pierre-Yves David <pierre-yves.david@octobus.net>
	Mon, 05 Apr 2021 12:20:40 +0200
changeset 46855	aba724bf550e
parent 46819	d4ba4d51f85f
child 46856	34e1fa4b548a
permissions	-rw-r--r--