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annotate rust/hg-core/src/operations/debugdata.rs @ 49087:bfc117647c71

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rust-revlog: move check for nodemap requirement to caller It's good for both making `Revlog` testable and reusable to have it not depend on the higher-level `Repo` type. This patch is one step in towards that. Additionally, this change in particular gives the callers more control over when to use a nodemap. Differential Revision: https://phab.mercurial-scm.org/D12546
author Martin von Zweigbergk <martinvonz@google.com>
date Tue, 12 Apr 2022 11:40:37 -0700
parents f2f57724d4eb
children 399439c12223
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1 // debugdata.rs
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2 //
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3 // Copyright 2020 Antoine Cezar <antoine.cezar@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 use crate::repo::Repo;
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9 use crate::requirements;
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10 use crate::revlog::revlog::{Revlog, RevlogError};
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11
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12 /// Kind of data to debug
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13 #[derive(Debug, Copy, Clone)]
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14 pub enum DebugDataKind {
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15 Changelog,
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16 Manifest,
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17 }
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18
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19 /// Dump the contents data of a revision.
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20 pub fn debug_data(
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21 repo: &Repo,
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22 revset: &str,
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23 kind: DebugDataKind,
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24 ) -> Result<Vec<u8>, RevlogError> {
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25 let index_file = match kind {
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26 DebugDataKind::Changelog => "00changelog.i",
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27 DebugDataKind::Manifest => "00manifest.i",
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28 };
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29 let use_nodemap = repo
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30 .requirements()
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31 .contains(requirements::NODEMAP_REQUIREMENT);
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32 let revlog = Revlog::open(repo, index_file, None, use_nodemap)?;
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33 let rev =
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34 crate::revset::resolve_rev_number_or_hex_prefix(revset, &revlog)?;
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35 let data = revlog.get_rev_data(rev)?;
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36 Ok(data.into_owned())
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37 }