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116 lines
2.5 KiB
PHP
116 lines
2.5 KiB
PHP
<?php
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namespace Rhymix\Framework\Parsers;
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/**
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* Generic XML parser that produces output identical to XE's XML parser.
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*/
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#[\AllowDynamicProperties]
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class XEXMLParser
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{
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/**
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* Load an XML file.
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*
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* @param string $filename
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* @param string $lang
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* @return ?self
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*/
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public static function loadXMLFile(string $filename, string $lang = ''): ?self
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{
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$content = file_get_contents($filename);
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return self::loadXMLString($content, $lang);
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}
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/**
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* Load an XML file.
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*
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* @param string $filename
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* @param string $lang
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* @return ?self
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*/
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public static function loadXMLString(string $content, string $lang = ''): ?self
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{
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// Apply transformations identical to XE's XML parser.
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$content = str_replace([chr(1), chr(2)], ['', ''], $content);
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$xml = simplexml_load_string($content);
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if ($xml === false)
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{
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return null;
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}
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// Get the current language.
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$lang = $lang ?: (\Context::getLangType() ?: 'en');
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// Create the result object.
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$result = new self;
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$root_name = $xml->getName();
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$result->$root_name = self::_recursiveConvert($xml, $lang);
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return $result;
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}
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/**
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* Convert an XML node recursively.
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*
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* @param \SimpleXMLElement $element
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* @param string $lang
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* @return self
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*/
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protected static function _recursiveConvert(\SimpleXMLElement $element, string $lang): self
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{
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// Create the basic structure of the node.
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$node = new self;
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$node->node_name = $element->getName();
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$node->attrs = new self;
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$node->body = trim($element->__toString());
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// Add attributes.
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$attrs = $element->attributes();
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foreach ($attrs as $key => $val)
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{
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$node->attrs->{$key} = trim($val);
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}
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$attrs = $element->attributes('xml', true);
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foreach ($attrs as $key => $val)
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{
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$node->attrs->{"xml:$key"} = trim($val);
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}
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// Recursively process child elements.
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foreach ($element->children() as $child)
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{
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// Skip children that do not match the language.
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$attrs = $child->attributes('xml', true);
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if (isset($attrs['lang']) && strval($attrs['lang']) !== $lang)
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{
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continue;
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}
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$child_name = $child->getName();
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$child_node = self::_recursiveConvert($child, $lang);
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if (!isset($node->$child_name))
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{
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$node->$child_name = $child_node;
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}
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elseif (is_array($node->$child_name))
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{
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$node->$child_name[] = $child_node;
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}
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else
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{
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$node->$child_name = [$node->$child_name, $child_node];
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}
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}
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return $node;
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}
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/**
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* Hack to prevent undefined property errors.
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*
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* @param string $name
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*/
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public function __get($name)
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{
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return isset($this->$name) ? $this->$name : null;
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}
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}
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