gitoxide_core/repository/commitgraph/
verify.rs

1use crate::OutputFormat;
2
3/// A general purpose context for many operations provided here
4pub struct Context<W1: std::io::Write, W2: std::io::Write> {
5    /// A stream to which to output errors
6    pub err: W2,
7    /// A stream to which to output operation results
8    pub out: W1,
9    pub output_statistics: Option<OutputFormat>,
10}
11
12pub(crate) mod function {
13    use std::io;
14
15    use anyhow::{Context as AnyhowContext, Result};
16
17    use crate::{repository::commitgraph::verify::Context, OutputFormat};
18
19    pub fn verify<W1, W2>(
20        repo: gix::Repository,
21        Context {
22            err: _err,
23            mut out,
24            output_statistics,
25        }: Context<W1, W2>,
26    ) -> Result<gix::commitgraph::verify::Outcome>
27    where
28        W1: io::Write,
29        W2: io::Write,
30    {
31        let g = repo.commit_graph()?;
32
33        #[allow(clippy::unnecessary_wraps, unknown_lints)]
34        fn noop_processor(_commit: &gix::commitgraph::file::Commit<'_>) -> std::result::Result<(), std::fmt::Error> {
35            Ok(())
36        }
37        let stats = g
38            .verify_integrity(noop_processor)
39            .with_context(|| "Verification failure")?;
40
41        #[cfg_attr(not(feature = "serde"), allow(clippy::single_match))]
42        match output_statistics {
43            Some(OutputFormat::Human) => drop(print_human_output(&mut out, &stats)),
44            #[cfg(feature = "serde")]
45            Some(OutputFormat::Json) => serde_json::to_writer_pretty(out, &stats)?,
46            _ => {}
47        }
48
49        Ok(stats)
50    }
51
52    fn print_human_output(out: &mut impl io::Write, stats: &gix::commitgraph::verify::Outcome) -> io::Result<()> {
53        writeln!(out, "number of commits with the given number of parents")?;
54        let mut parent_counts: Vec<_> = stats.parent_counts.iter().map(|(a, b)| (*a, *b)).collect();
55        parent_counts.sort_by_key(|e| e.0);
56        for (parent_count, commit_count) in parent_counts.into_iter() {
57            writeln!(out, "\t{parent_count:>2}: {commit_count}")?;
58        }
59        writeln!(out, "\t->: {}", stats.num_commits)?;
60
61        write!(out, "\nlongest path length between two commits: ")?;
62        if let Some(n) = stats.longest_path_length {
63            writeln!(out, "{n}")?;
64        } else {
65            writeln!(out, "unknown")?;
66        }
67
68        Ok(())
69    }
70}
gitoxide_core/repository/commitgraph/verify.rs

gitoxide_core/repository/commitgraph/
verify.rs
