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annotate mercurial/revlogutils/__init__.py @ 48813:2bb75c65fa6c stable

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ci: use the `v1.0` flavor of the docker images in the CI This new versioning will help us to maintain backward compatibility in the docker image. This will be useful to deal with mismatch between default/stable in version and the re-run CI on older changesets in the future. Once this changeset land on stable, we will have to merge it in default. Then we can start make backward incompatible changes in a new image version. Differential Revision: https://phab.mercurial-scm.org/D12388
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Fri, 18 Mar 2022 18:09:46 +0100
parents 52034c42c09d
children 6000f5b25c9b
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1 # mercurial.revlogutils -- basic utilities for revlog
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2 #
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3 # Copyright 2019 Pierre-Yves David <pierre-yves.david@octobus.net>
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2 or any later version.
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7
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8 from __future__ import absolute_import
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9
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10 from ..thirdparty import attr
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11 from ..interfaces import repository
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12
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13 # See mercurial.revlogutils.constants for doc
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14 COMP_MODE_INLINE = 2
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15 RANK_UNKNOWN = -1
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16
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17
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18 def offset_type(offset, type):
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19 if (type & ~repository.REVISION_FLAGS_KNOWN) != 0:
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20 raise ValueError(b'unknown revlog index flags: %d' % type)
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21 return int(int(offset) << 16 | type)
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22
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23
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24 def entry(
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25 data_offset,
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26 data_compressed_length,
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27 data_delta_base,
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28 link_rev,
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29 parent_rev_1,
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30 parent_rev_2,
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31 node_id,
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32 flags=0,
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33 data_uncompressed_length=-1,
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34 data_compression_mode=COMP_MODE_INLINE,
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35 sidedata_offset=0,
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36 sidedata_compressed_length=0,
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37 sidedata_compression_mode=COMP_MODE_INLINE,
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38 rank=RANK_UNKNOWN,
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39 ):
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40 """Build one entry from symbolic name
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41
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42 This is useful to abstract the actual detail of how we build the entry
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43 tuple for caller who don't care about it.
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44
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45 This should always be called using keyword arguments. Some arguments have
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46 default value, this match the value used by index version that does not store such data.
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47 """
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48 return (
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49 offset_type(data_offset, flags),
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50 data_compressed_length,
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51 data_uncompressed_length,
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52 data_delta_base,
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53 link_rev,
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54 parent_rev_1,
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55 parent_rev_2,
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56 node_id,
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57 sidedata_offset,
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58 sidedata_compressed_length,
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59 data_compression_mode,
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60 sidedata_compression_mode,
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61 rank,
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62 )
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63
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64
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65 @attr.s(slots=True, frozen=True)
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66 class revisioninfo(object):
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67 """Information about a revision that allows building its fulltext
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68 node: expected hash of the revision
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69 p1, p2: parent revs of the revision
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70 btext: built text cache consisting of a one-element list
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71 cachedelta: (baserev, uncompressed_delta) or None
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72 flags: flags associated to the revision storage
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73
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74 One of btext[0] or cachedelta must be set.
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75 """
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76
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77 node = attr.ib()
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78 p1 = attr.ib()
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79 p2 = attr.ib()
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80 btext = attr.ib()
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81 textlen = attr.ib()
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82 cachedelta = attr.ib()
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83 flags = attr.ib()