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annotate rust/hg-core/src/operations/debugdata.rs @ 47333:69530e5d4fe5

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dirstate-tree: Add `NodeRef` and `ChildNodesRef` enums They are used instead of `&Node` and `&ChildNodes` respectively. The `ChildNodes` type alias also becomes a similar enum. For now they only have one variant each, to be extended later. Adding enums now forces various use sites go through new methods instead of manipulating the underlying data structure directly. Differential Revision: https://phab.mercurial-scm.org/D10747
author Simon Sapin <simon.sapin@octobus.net>
date Wed, 19 May 2021 13:15:00 +0200
parents b274aa2f20fd
children f2f57724d4eb
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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::revlog::revlog::{Revlog, RevlogError};
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10
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11 /// Kind of data to debug
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12 #[derive(Debug, Copy, Clone)]
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13 pub enum DebugDataKind {
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14 Changelog,
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15 Manifest,
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16 }
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17
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18 /// Dump the contents data of a revision.
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19 pub fn debug_data(
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20 repo: &Repo,
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21 revset: &str,
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22 kind: DebugDataKind,
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23 ) -> Result<Vec<u8>, RevlogError> {
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24 let index_file = match kind {
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25 DebugDataKind::Changelog => "00changelog.i",
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26 DebugDataKind::Manifest => "00manifest.i",
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27 };
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28 let revlog = Revlog::open(repo, index_file, None)?;
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29 let rev =
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30 crate::revset::resolve_rev_number_or_hex_prefix(revset, &revlog)?;
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31 let data = revlog.get_rev_data(rev)?;
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32 Ok(data)
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33 }