gitoxide_core/repository/
merge_base.rs

1use anyhow::bail;
2
3use crate::OutputFormat;
4
5pub fn merge_base(
6    mut repo: gix::Repository,
7    first: String,
8    others: Vec<String>,
9    mut out: impl std::io::Write,
10    format: OutputFormat,
11) -> anyhow::Result<()> {
12    if format != OutputFormat::Human {
13        bail!("Only 'human' format is currently supported");
14    }
15    repo.object_cache_size_if_unset(50 * 1024 * 1024);
16    let first_id = repo.rev_parse_single(first.as_str())?;
17    let other_ids: Vec<_> = others
18        .iter()
19        .cloned()
20        .map(|other| repo.rev_parse_single(other.as_str()).map(gix::Id::detach))
21        .collect::<Result<_, _>>()?;
22
23    let cache = repo.commit_graph_if_enabled()?;
24    let mut graph = repo.revision_graph(cache.as_ref());
25    let bases = repo.merge_bases_many_with_graph(first_id, &other_ids, &mut graph)?;
26    if bases.is_empty() {
27        bail!("No base found for {first} and {others}", others = others.join(", "))
28    }
29    for id in bases {
30        writeln!(&mut out, "{id}")?;
31    }
32    Ok(())
33}