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ðŸ“„ Xml.php(3.52 KB)
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Editing: Xml.php

<?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\Format;

use Joomla\Registry\FormatInterface;
use SimpleXMLElement;
use stdClass;

/**
 * XML format handler for Registry.
 *
 * @since  1.0
 */
class Xml implements FormatInterface
{
	/**
	 * Converts an object into an XML formatted string.
	 * -	If more than two levels of nested groups are necessary, since INI is not
	 * useful, XML or another format should be used.
	 *
	 * @param   object  $object   Data source object.
	 * @param   array   $options  Options used by the formatter.
	 *
	 * @return  string  XML formatted string.
	 *
	 * @since   1.0
	 */
	public function objectToString($object, array $options = [])
	{
		$rootName = $options['name'] ?? 'registry';
		$nodeName = $options['nodeName'] ?? 'node';

// Create the root node.
		$root = simplexml_load_string('<' . $rootName . ' />');

// Iterate over the object members.
		$this->getXmlChildren($root, $object, $nodeName);

return $root->asXML();
	}

/**
	 * Parse a XML formatted string and convert it into an object.
	 *
	 * @param   string  $data     XML formatted string to convert.
	 * @param   array   $options  Options used by the formatter.
	 *
	 * @return  object   Data object.
	 *
	 * @since   1.0
	 */
	public function stringToObject($data, array $options = [])
	{
		$obj = new stdClass;

// Parse the XML string.
		$xml = simplexml_load_string($data);

foreach ($xml->children() as $node)
		{
			$obj->{$node['name']} = $this->getValueFromNode($node);
		}

return $obj;
	}

/**
	 * Method to get a PHP native value for a SimpleXMLElement object. -- called recursively
	 *
	 * @param   object  $node  SimpleXMLElement object for which to get the native value.
	 *
	 * @return  mixed  Native value of the SimpleXMLElement object.
	 *
	 * @since   1.0
	 */
	protected function getValueFromNode($node)
	{
		switch ($node['type'])
		{
			case 'integer':
				$value = (string) $node;

return (int) $value;

case 'string':
				return (string) $node;

case 'boolean':
				$value = (string) $node;

return (bool) $value;

case 'double':
				$value = (string) $node;

return (float) $value;

case 'array':
				$value = [];

foreach ($node->children() as $child)
				{
					$value[(string) $child['name']] = $this->getValueFromNode($child);
				}

break;

default:
				$value = new stdClass;

foreach ($node->children() as $child)
				{
					$value->{$child['name']} = $this->getValueFromNode($child);
				}

break;
		}

return $value;
	}

/**
	 * Method to build a level of the XML string -- called recursively
	 *
	 * @param   SimpleXMLElement  $node      SimpleXMLElement object to attach children.
	 * @param   object            $var       Object that represents a node of the XML document.
	 * @param   string            $nodeName  The name to use for node elements.
	 *
	 * @return  void
	 *
	 * @since   1.0
	 */
	protected function getXmlChildren(SimpleXMLElement $node, $var, $nodeName)
	{
		// Iterate over the object members.
		foreach ((array) $var as $k => $v)
		{
			if (is_scalar($v))
			{
				$n = $node->addChild($nodeName, $v);
				$n->addAttribute('name', $k);
				$n->addAttribute('type', \gettype($v));
			}
			else
			{
				$n = $node->addChild($nodeName);
				$n->addAttribute('name', $k);
				$n->addAttribute('type', \gettype($v));

$this->getXmlChildren($n, $v, $nodeName);
			}
		}
	}
}

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