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annotate mercurial/revlogutils/__init__.py @ 47438:1be9bf3669cb

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debugbackupbundle: use new context manager for silencing the ui A difference between setting `ui.quiet` and using `ui.silent()` is that the latter also silences `ui.write()` calls. That's practically always what one wants, including here, I think. Differential Revision: https://phab.mercurial-scm.org/D10885
author Martin von Zweigbergk <martinvonz@google.com>
date Fri, 18 Jun 2021 16:00:58 -0700
parents 34cc102c73f5
children 52034c42c09d
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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
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16
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17 def offset_type(offset, type):
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18 if (type & ~repository.REVISION_FLAGS_KNOWN) != 0:
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19 raise ValueError(b'unknown revlog index flags: %d' % type)
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20 return int(int(offset) << 16 | type)
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21
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22
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23 def entry(
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24 data_offset,
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25 data_compressed_length,
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26 data_delta_base,
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27 link_rev,
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28 parent_rev_1,
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29 parent_rev_2,
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30 node_id,
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31 flags=0,
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32 data_uncompressed_length=-1,
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33 data_compression_mode=COMP_MODE_INLINE,
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34 sidedata_offset=0,
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35 sidedata_compressed_length=0,
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36 sidedata_compression_mode=COMP_MODE_INLINE,
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37 ):
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38 """Build one entry from symbolic name
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39
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40 This is useful to abstract the actual detail of how we build the entry
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41 tuple for caller who don't care about it.
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42
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43 This should always be called using keyword arguments. Some arguments have
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44 default value, this match the value used by index version that does not store such data.
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45 """
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46 return (
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47 offset_type(data_offset, flags),
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48 data_compressed_length,
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49 data_uncompressed_length,
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50 data_delta_base,
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51 link_rev,
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52 parent_rev_1,
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53 parent_rev_2,
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54 node_id,
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55 sidedata_offset,
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56 sidedata_compressed_length,
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57 data_compression_mode,
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58 sidedata_compression_mode,
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59 )
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60
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61
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62 @attr.s(slots=True, frozen=True)
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63 class revisioninfo(object):
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64 """Information about a revision that allows building its fulltext
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65 node: expected hash of the revision
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66 p1, p2: parent revs of the revision
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67 btext: built text cache consisting of a one-element list
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68 cachedelta: (baserev, uncompressed_delta) or None
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69 flags: flags associated to the revision storage
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70
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71 One of btext[0] or cachedelta must be set.
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72 """
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73
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74 node = attr.ib()
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75 p1 = attr.ib()
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76 p2 = attr.ib()
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77 btext = attr.ib()
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78 textlen = attr.ib()
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79 cachedelta = attr.ib()
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80 flags = attr.ib()