Mercurial > hg
view rust/hg-core/src/operations/debugdata.rs @ 46435:2e2033081274
rust: replace trivial `impl From …` with `#[derive(derive_more::From)]`
Crate docs: https://jeltef.github.io/derive_more/derive_more/from.html
Differential Revision: https://phab.mercurial-scm.org/D9875
author | Simon Sapin <simon.sapin@octobus.net> |
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date | Tue, 26 Jan 2021 20:05:37 +0100 |
parents | 3e2d539d0d1a |
children | b274aa2f20fd |
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// debugdata.rs // // Copyright 2020 Antoine Cezar <antoine.cezar@octobus.net> // // This software may be used and distributed according to the terms of the // GNU General Public License version 2 or any later version. use crate::repo::Repo; use crate::revlog::revlog::{Revlog, RevlogError}; /// Kind of data to debug #[derive(Debug, Copy, Clone)] pub enum DebugDataKind { Changelog, Manifest, } /// Error type for `debug_data` #[derive(Debug, derive_more::From)] pub enum DebugDataError { /// Error when reading a `revlog` file. #[from] IoError(std::io::Error), /// The revision has not been found. InvalidRevision, /// Found more than one revision whose ID match the requested prefix AmbiguousPrefix, /// A `revlog` file is corrupted. CorruptedRevlog, /// The `revlog` format version is not supported. UnsuportedRevlogVersion(u16), /// The `revlog` data format is not supported. UnknowRevlogDataFormat(u8), } impl From<RevlogError> for DebugDataError { fn from(err: RevlogError) -> Self { match err { RevlogError::IoError(err) => DebugDataError::IoError(err), RevlogError::UnsuportedVersion(version) => { DebugDataError::UnsuportedRevlogVersion(version) } RevlogError::InvalidRevision => DebugDataError::InvalidRevision, RevlogError::AmbiguousPrefix => DebugDataError::AmbiguousPrefix, RevlogError::Corrupted => DebugDataError::CorruptedRevlog, RevlogError::UnknowDataFormat(format) => { DebugDataError::UnknowRevlogDataFormat(format) } } } } /// Dump the contents data of a revision. pub fn debug_data( repo: &Repo, revset: &str, kind: DebugDataKind, ) -> Result<Vec<u8>, DebugDataError> { let index_file = match kind { DebugDataKind::Changelog => "00changelog.i", DebugDataKind::Manifest => "00manifest.i", }; let revlog = Revlog::open(repo, index_file, None)?; let rev = crate::revset::resolve_rev_number_or_hex_prefix(revset, &revlog)?; let data = revlog.get_rev_data(rev)?; Ok(data) }