gitoxide-core 0.63.0

The library implementing all capabilities of the gitoxide CLI
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use gix::{
    ObjectId, Result,
    error::{ResultExt, message},
    objs::Kind,
};

pub fn function(mut repo: gix::Repository, spec: Option<String>, mut out: impl std::io::Write) -> Result<()> {
    let spec = spec.unwrap_or("HEAD".into());

    repo.object_cache_size_if_unset(4 * 1024 * 1024);
    // We expect to be finding a bunch of non-existent objects here - never refresh the ODB
    repo.objects.refresh_never();

    let id = repo
        .rev_parse_single(spec.as_str())
        .or_raise(|| message("Only single revisions are supported"))?;
    let commits: gix::revision::Walk<'_> = id
        .object()?
        .peel_to_kind(gix::object::Kind::Commit)
        .or_raise(|| message("Need committish as starting point"))?
        .id()
        .ancestors()
        .all()?;

    let on_missing = |oid: &ObjectId, kind: Kind| {
        writeln!(out, "{oid}: {kind}").expect("failed to write output");
    };

    let mut check = gix_fsck::Connectivity::new(&repo.objects, on_missing);
    // Walk all commits, checking each one for connectivity
    for commit in commits {
        let commit = commit?;
        check.check_commit(&commit.id)?;
        // Note that we leave parent-iteration to the commits iterator, as it will
        // correctly handle shallow repositories which are expected to have the commits
        // along the shallow boundary missing.
    }
    Ok(())
}