generate rector rule to rename google api client alias

gen.sh

#!/bin/sh

echo "<?php" > rector_rule.php
echo "return [" >> rector_rule.php

for file in $(grep ^class_alias vendor/google/ -R | cut -d: -f1);
do
  echo "        '$(cat $file | grep ^class_alias | cut -d\' -f2)' => '$(cat $file | grep ^namespace | cut -d" " -f2 | cut -d\; -f1)\\$(cat $file | grep ^class\  | cut -d" " -f2)',";
done >> rector_rule.php

echo "];" >> rector_rule.php

rector.php

<?php

use Rector\Config\RectorConfig;
use Rector\Renaming\Rector\Name\RenameClassRector;

return function (RectorConfig $rectorConfig) {
    $rectorConfig->ruleWithConfiguration(RenameClassRector::class, require_once "rector_rule.php");
};