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<?php
/**
* Module declaration xml converter. Converts declaration DOM Document to internal array representation.
*
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Framework\Module\Declaration\Converter;
class Dom implements \Magento\Framework\Config\ConverterInterface
{
/**
* {@inheritdoc}
* @throws \Exception
*/
public function convert($source)
{
$modules = [];
$xpath = new \DOMXPath($source);
/** @var $moduleNode \DOMNode */
foreach ($xpath->query('/config/module') as $moduleNode) {
$moduleData = [];
$moduleAttributes = $moduleNode->attributes;
$nameNode = $moduleAttributes->getNamedItem('name');
if ($nameNode === null) {
throw new \Exception('Attribute "name" is required for module node.');
}
$moduleData['name'] = $nameNode->nodeValue;
$versionNode = $moduleAttributes->getNamedItem('setup_version');
$moduleData['setup_version'] = $versionNode ? $versionNode->nodeValue : null;
$moduleData['sequence'] = [];
/** @var $childNode \DOMNode */
foreach ($moduleNode->childNodes as $childNode) {
switch ($childNode->nodeName) {
case 'sequence':
$moduleData['sequence'] = $this->_readModules($childNode);
break;
}
}
// Use module name as a key in the result array to allow quick access to module configuration
$modules[$nameNode->nodeValue] = $moduleData;
}
return $modules;
}
/**
* Convert module depends node into assoc array
*
* @param \DOMNode $node
* @return array
* @throws \Exception
*/
protected function _readModules(\DOMNode $node)
{
$result = [];
/** @var $childNode \DOMNode */
foreach ($node->childNodes as $childNode) {
switch ($childNode->nodeName) {
case 'module':
$nameNode = $childNode->attributes->getNamedItem('name');
if ($nameNode === null) {
throw new \Exception('Attribute "name" is required for module node.');
}
$result[] = $nameNode->nodeValue;
break;
}
}
return $result;
}
}