fn get_coveralls_git_info()

in src/output.rs [352:415]

• 56 lines of code
• 5 McCabe index (conditional complexity)

fn get_coveralls_git_info(commit_sha: &str, vcs_branch: &str) -> Value {
    let status = Command::new("git")
        .arg("status")
        .stdin(Stdio::null())
        .stdout(Stdio::null())
        .stderr(Stdio::null())
        .status()
        .map(|exit_status| exit_status.success());
    if let Ok(true) = status {
        // We have a valid Git repo -- the rest of the function will handle this case
    } else {
        return json!({
            "head": {
                "id": commit_sha,
            },
            "branch": vcs_branch,
        });
    }

    // Runs `git log` with a given format, to extract some piece of commit info. On failure,
    // returns empty string.
    let gitlog = |format| -> String {
        get_git_output([
            "log",
            "--max-count=1",
            &format!("--pretty=format:{}", format),
            commit_sha,
        ])
    };

    let author_name = gitlog("%aN");
    let author_email = gitlog("%ae");
    let committer_name = gitlog("%cN");
    let committer_email = gitlog("%ce");
    let message = gitlog("%s");

    let remotes: Value = {
        let output = get_git_output(["remote", "--verbose"]);

        let mut remotes = Vec::<Value>::new();
        for line in output.lines() {
            if line.ends_with(" (fetch)") {
                let mut fields = line.split_whitespace();
                if let (Some(name), Some(url)) = (fields.next(), fields.next()) {
                    remotes.push(json!({"name": name, "url": url}))
                };
            }
        }
        json!(remotes)
    };

    json!({
        "head": {
            "id": commit_sha,
            "author_name": author_name,
            "author_email": author_email,
            "committer_name": committer_name,
            "committer_email": committer_email,
            "message": message,
        },
        "branch": vcs_branch,
        "remotes": remotes,
    })
}