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<?php
/**
 * Part of the Joomla Framework Registry Package
 *
 * @copyright  Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE
 */

namespace Joomla\Registry;

/**
 * Factory class to fetch Registry objects
 *
 * @since  1.5.0
 */
class Factory
{
	/**
	 * Returns a FormatInterface object, only creating it if it doesn't already exist.
	 *
	 * @param   string  $type     The format to load
	 * @param   array   $options  Additional options to configure the object
	 *
	 * @return  FormatInterface  Registry format handler
	 *
	 * @since   1.5.0
	 * @throws  \InvalidArgumentException
	 */
	public static function getFormat($type, array $options = [])
	{
		// Sanitize format type.
		$type = strtolower(preg_replace('/[^A-Z0-9_]/i', '', $type));

$localNamespace = __NAMESPACE__ . '\\Format';
		$namespace      = $options['format_namespace'] ?? $localNamespace;
		$class          = $namespace . '\\' . ucfirst($type);

if (!class_exists($class))
		{
			// Were we given a custom namespace?  If not, there's nothing else we can do
			if ($namespace === $localNamespace)
			{
				throw new \InvalidArgumentException(sprintf('Unable to load format class for type "%s".', $type), 500);
			}

$class = $localNamespace . '\\' . ucfirst($type);

if (!class_exists($class))
			{
				throw new \InvalidArgumentException(sprintf('Unable to load format class for type "%s".', $type), 500);
			}
		}

return new $class;
	}
}