protected static function printHelp()

in src/shipit/phase/ShipItPhaseRunner.php [216:271]
49 lines of code
8 McCabe index (conditional complexity)

  protected static function printHelp(vec<ShipItCLIArgument> $config): void {
    /* HH_FIXME[2050] Previously hidden by unsafe_expr */
    $filename = $_SERVER['SCRIPT_NAME'];
    $max_left = 0;
    $rows = dict[];
    foreach ($config as $opt) {
      $description = Shapes::idx($opt, 'description');
      if ($description === null) {
        $replacement = Shapes::idx($opt, 'replacement');
        if ($replacement !== null) {
          continue;
        } else {
          invariant(
            !Shapes::idx($opt, 'write'),
            '--%s is undocumented, does something, and has no replacement',
            $opt['long_name'],
          );
          $description = 'deprecated, no-op';
        }
      }

      $short = Shapes::idx($opt, 'short_name');
      $long = $opt['long_name'];
      $is_optional = Str\slice($long, -2) === '::';
      $is_required = !$is_optional && Str\slice($long, -1) === ':';
      $long = Str\trim_right($long, ':');
      $prefix = $short !== null ? '-'.Str\trim_right($short, ':').', ' : '';
      $suffix = $is_optional ? "=VALUE" : ($is_required ? "=$long" : '');
      $left = '  '.$prefix.'--'.$long.$suffix;
      $max_left = Math\maxva(Str\length($left), $max_left);

      $rows[$long] = tuple($left, $description);
    }
    $rows = Dict\sort_by_key($rows);

    $help = $rows['help'];
    unset($rows['help']);
    $rows = Dict\merge(dict['help' => $help], $rows);

    $opt_help = Str\join(
      Dict\map(
        $rows,
        $row ==>
          Str\format("%s  %s\n", Str\pad_right($row[0], $max_left), $row[1]),
      ),
      "",
    );
    echo <<<EOF
Usage:
{$filename} [options]

Options:
{$opt_help}

EOF;
  }