Function _run_hooks

pre_commit/commands/run.py:282–322

Actually run the hooks.

(
        config: dict[str, Any],
        hooks: Sequence[Hook],
        skips: set[str],
        args: argparse.Namespace,
)

def _run_hooks(
        config: dict[str, Any],
        hooks: Sequence[Hook],
        skips: set[str],
        args: argparse.Namespace,
) -> int:
    """Actually run the hooks."""
    cols = _compute_cols(hooks)
    classifier = Classifier.from_config(
        _all_filenames(args), config['files'], config['exclude'],
    )
    retval = 0
    prior_diff = _get_diff()
    for hook in hooks:
        current_retval, prior_diff = _run_single_hook(
            classifier, hook, skips, cols, prior_diff,
            verbose=args.verbose, use_color=args.color,
        )
        retval |= current_retval
        fail_fast = (config['fail_fast'] or hook.fail_fast or args.fail_fast)
        if current_retval and fail_fast:
            break
    if retval and args.show_diff_on_failure and prior_diff:
        if args.all_files:
            output.write_line(
                'pre-commit hook(s) made changes.\n'
                'If you are seeing this message in CI, '
                'reproduce locally with: `pre-commit run --all-files`.\n'
                'To run `pre-commit` as part of git workflow, use '
                '`pre-commit install`.',
            )
        output.write_line('All changes made by hooks:')
        # args.color is a boolean.
        # See user_color function in color.py
        git_color_opt = 'always' if args.color else 'never'
        subprocess.call((
            'git', '--no-pager', 'diff', '--no-ext-diff',
            f'--color={git_color_opt}',
        ))

    return retval


def _has_unmerged_paths() -> bool: