Function runLog

packages/computer/src/git/cli.ts:743–805

(
  client: GitClient,
  args: string[],
  input: GitCliInput,
)

// ---------------------------------------------------------------

async function runLog(
  client: GitClient,
  args: string[],
  input: GitCliInput,
): Promise<GitCliResult> {
  // `git log [-n <N>] [-<N>] [--oneline] [<ref>]`. Default output
  // is the full commit form; --oneline collapses each entry to a
  // single line.
  //
  // Rewrite the `-<N>` shorthand (e.g. `-1`, `-5`) to `-n <N>`
  // before parsing — the generic parser would otherwise reject
  // `-5` as an unknown short option. `-0` and non-numeric forms
  // fall through to the `-n` validation below, which rejects
  // them.
  let shorthandDepth: string | undefined;
  const rewritten: string[] = [];
  for (const arg of args) {
    const m = /^-(\d+)$/.exec(arg);
    if (m) {
      shorthandDepth = m[1];
      continue;
    }
    rewritten.push(arg);
  }
  const parsed = parseFlags(rewritten, {
    n: { kind: "value" },
    oneline: { kind: "bool" },
  });
  if ("error" in parsed) {
    return { stdout: "", stderr: `git log: ${parsed.error}\n`, exitCode: 129 };
  }
  if (shorthandDepth !== undefined && parsed.flags.n === undefined) {
    parsed.flags.n = shorthandDepth;
  }
  if (parsed.positional.length > 1) {
    return {
      stdout: "",
      stderr: `git log: unexpected argument '${parsed.positional[1]}'\n`,
      exitCode: 129,
    };
  }
  let depth: number | undefined;
  if (parsed.flags.n !== undefined) {
    const v = Number.parseInt(parsed.flags.n as string, 10);
    if (!Number.isFinite(v) || v < 1) {
      return {
        stdout: "",
        stderr: `git log: -n requires a positive integer (got ${JSON.stringify(parsed.flags.n)})\n`,
        exitCode: 129,
      };
    }
    depth = v;
  }
  const dir = resolveDir(undefined, input.cwd);
  try {
    const ref = await resolveRevisionRef(client, dir, parsed.positional[0]);
    const commits = await client.log({ dir, ref, depth });
    const stdout = parsed.flags.oneline ? formatLogOneline(commits) : formatLogFull(commits);