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1 | # mercurial.revlogutils -- basic utilities for revlog |
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1 | # mercurial.revlogutils -- basic utilities for revlog | |
2 | # |
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2 | # | |
3 | # Copyright 2019 Pierre-Yves David <pierre-yves.david@octobus.net> |
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3 | # Copyright 2019 Pierre-Yves David <pierre-yves.david@octobus.net> | |
4 | # |
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4 | # | |
5 | # This software may be used and distributed according to the terms of the |
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5 | # This software may be used and distributed according to the terms of the | |
6 | # GNU General Public License version 2 or any later version. |
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6 | # GNU General Public License version 2 or any later version. | |
7 |
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7 | |||
8 |
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8 | |||
9 | from ..thirdparty import attr |
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9 | from ..thirdparty import attr | |
10 | from ..interfaces import repository |
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10 | from ..interfaces import repository | |
11 |
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11 | |||
12 | # See mercurial.revlogutils.constants for doc |
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12 | # See mercurial.revlogutils.constants for doc | |
13 | COMP_MODE_INLINE = 2 |
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13 | COMP_MODE_INLINE = 2 | |
14 | RANK_UNKNOWN = -1 |
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14 | RANK_UNKNOWN = -1 | |
15 |
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15 | |||
16 |
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16 | |||
17 | def offset_type(offset, type): |
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17 | def offset_type(offset, type): | |
18 | if (type & ~repository.REVISION_FLAGS_KNOWN) != 0: |
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18 | if (type & ~repository.REVISION_FLAGS_KNOWN) != 0: | |
19 | raise ValueError(b'unknown revlog index flags: %d' % type) |
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19 | raise ValueError(b'unknown revlog index flags: %d' % type) | |
20 | return int(int(offset) << 16 | type) |
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20 | return int(int(offset) << 16 | type) | |
21 |
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21 | |||
22 |
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22 | |||
23 | def entry( |
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23 | def entry( | |
24 | data_offset, |
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24 | data_offset, | |
25 | data_compressed_length, |
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25 | data_compressed_length, | |
26 | data_delta_base, |
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26 | data_delta_base, | |
27 | link_rev, |
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27 | link_rev, | |
28 | parent_rev_1, |
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28 | parent_rev_1, | |
29 | parent_rev_2, |
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29 | parent_rev_2, | |
30 | node_id, |
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30 | node_id, | |
31 | flags=0, |
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31 | flags=0, | |
32 | data_uncompressed_length=-1, |
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32 | data_uncompressed_length=-1, | |
33 | data_compression_mode=COMP_MODE_INLINE, |
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33 | data_compression_mode=COMP_MODE_INLINE, | |
34 | sidedata_offset=0, |
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34 | sidedata_offset=0, | |
35 | sidedata_compressed_length=0, |
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35 | sidedata_compressed_length=0, | |
36 | sidedata_compression_mode=COMP_MODE_INLINE, |
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36 | sidedata_compression_mode=COMP_MODE_INLINE, | |
37 | rank=RANK_UNKNOWN, |
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37 | rank=RANK_UNKNOWN, | |
38 | ): |
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38 | ): | |
39 | """Build one entry from symbolic name |
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39 | """Build one entry from symbolic name | |
40 |
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40 | |||
41 | This is useful to abstract the actual detail of how we build the entry |
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41 | This is useful to abstract the actual detail of how we build the entry | |
42 | tuple for caller who don't care about it. |
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42 | tuple for caller who don't care about it. | |
43 |
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43 | |||
44 | This should always be called using keyword arguments. Some arguments have |
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44 | This should always be called using keyword arguments. Some arguments have | |
45 | default value, this match the value used by index version that does not store such data. |
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45 | default value, this match the value used by index version that does not store such data. | |
46 | """ |
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46 | """ | |
47 | return ( |
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47 | return ( | |
48 | offset_type(data_offset, flags), |
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48 | offset_type(data_offset, flags), | |
49 | data_compressed_length, |
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49 | data_compressed_length, | |
50 | data_uncompressed_length, |
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50 | data_uncompressed_length, | |
51 | data_delta_base, |
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51 | data_delta_base, | |
52 | link_rev, |
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52 | link_rev, | |
53 | parent_rev_1, |
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53 | parent_rev_1, | |
54 | parent_rev_2, |
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54 | parent_rev_2, | |
55 | node_id, |
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55 | node_id, | |
56 | sidedata_offset, |
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56 | sidedata_offset, | |
57 | sidedata_compressed_length, |
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57 | sidedata_compressed_length, | |
58 | data_compression_mode, |
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58 | data_compression_mode, | |
59 | sidedata_compression_mode, |
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59 | sidedata_compression_mode, | |
60 | rank, |
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60 | rank, | |
61 | ) |
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61 | ) | |
62 |
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62 | |||
63 |
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63 | |||
64 | @attr.s(slots=True, frozen=True) |
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64 | @attr.s(slots=True, frozen=True) | |
65 | class revisioninfo: |
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65 | class revisioninfo: | |
66 | """Information about a revision that allows building its fulltext |
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66 | """Information about a revision that allows building its fulltext | |
67 | node: expected hash of the revision |
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67 | node: expected hash of the revision | |
68 | p1, p2: parent revs of the revision |
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68 | p1, p2: parent revs of the revision (as node) | |
69 | btext: built text cache consisting of a one-element list |
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69 | btext: built text cache consisting of a one-element list | |
70 | cachedelta: (baserev, uncompressed_delta, usage_mode) or None |
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70 | cachedelta: (baserev, uncompressed_delta, usage_mode) or None | |
71 | flags: flags associated to the revision storage |
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71 | flags: flags associated to the revision storage | |
72 |
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72 | |||
73 | One of btext[0] or cachedelta must be set. |
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73 | One of btext[0] or cachedelta must be set. | |
74 | """ |
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74 | """ | |
75 |
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75 | |||
76 | node = attr.ib() |
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76 | node = attr.ib() | |
77 | p1 = attr.ib() |
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77 | p1 = attr.ib() | |
78 | p2 = attr.ib() |
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78 | p2 = attr.ib() | |
79 | btext = attr.ib() |
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79 | btext = attr.ib() | |
80 | textlen = attr.ib() |
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80 | textlen = attr.ib() | |
81 | cachedelta = attr.ib() |
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81 | cachedelta = attr.ib() | |
82 | flags = attr.ib() |
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82 | flags = attr.ib() |
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