ClassNameToScreenId.php

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<?php

declare(strict_types=1);

namespace ILIAS\Services\Help\ScreenId;

trait ClassNameToScreenId
{
    private static string $REGEX = '/il(Object|Obj|)(.*)GUI/mi';

    protected function classNameToScreenId(string $classname): ?string
    {
        $classname = preg_replace(self::$REGEX, "$2", $classname);
        $classname = $this->snakeToCamel($classname);

        return $classname;
    }

    protected function snakeToCamel(string $command): string
    {
        return strtolower(preg_replace('/(?<!^)[A-Z]/', '_$0', $command));
    }
}