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<?php |
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namespace Bmatovu\LaravelXml\Support; |
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use JsonSerializable; |
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use SimpleXMLElement; |
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/** |
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* Class JsonSimpleXMLElementDecorator. |
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* |
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* @see https://hakre.wordpress.com/2013/07/09/simplexml-and-json-encode-in-php-part-i |
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* @see https://gist.github.com/hakre/1d9e555ac1ebb1fc4ea8 |
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* @see https://gist.github.com/hakre/c36a66708259f54e564a |
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*/ |
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class JsonSimpleXMLElementDecorator implements JsonSerializable |
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{ |
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const DEF_DEPTH = 512; |
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/** |
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* @var \SimpleXMLElement |
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*/ |
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protected $subject; |
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/** |
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* @var array |
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*/ |
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protected $options = [ |
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'@attributes' => true, |
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'@text' => true, |
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'depth' => self::DEF_DEPTH, |
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]; |
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/** |
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* Constructor. |
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*/ |
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public function __construct( |
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SimpleXMLElement $element, |
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bool $useAttributes = true, |
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bool $useText = true, |
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int $depth = self::DEF_DEPTH |
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) { |
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$this->subject = $element; |
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if (null !== $useAttributes) { |
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$this->useAttributes($useAttributes); |
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} |
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if (null !== $useText) { |
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$this->useText($useText); |
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} |
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if (null !== $depth) { |
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$this->setDepth($depth); |
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} |
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} |
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/** |
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* Should use attributes. |
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* |
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* @param bool $bool |
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*/ |
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public function useAttributes($bool): void |
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{ |
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$this->options['@attributes'] = (bool) $bool; |
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} |
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/** |
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* Should use text. |
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* |
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* @param bool $bool |
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*/ |
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public function useText($bool): void |
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{ |
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$this->options['@text'] = (bool) $bool; |
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} |
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/** |
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* Set depth. |
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* |
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* @param int $depth |
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*/ |
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public function setDepth($depth): void |
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{ |
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$this->options['depth'] = (int) max(0, $depth); |
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} |
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/** |
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* Specify data which should be serialized to JSON. |
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* |
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* @return mixed Data which can be serialized by json_encode |
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*/ |
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#[\ReturnTypeWillChange] |
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public function jsonSerialize() |
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{ |
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$subject = $this->subject; |
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$array = []; |
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// json encode attributes if any. |
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if ($this->options['@attributes']) { |
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if ($attributes = $subject->attributes()) { |
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$array['@attributes'] = array_map('strval', iterator_to_array($attributes)); |
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} |
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} |
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// traverse into children if applicable |
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$children = $subject; |
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$this->options = (array) $this->options; |
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$depth = $this->options['depth'] - 1; |
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if ($depth <= 0) { |
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$children = []; |
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} |
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// json encode child elements if any. group on duplicate names as an array. |
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foreach ($children as $name => $element) { |
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/** @var SimpleXMLElement $element */ |
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$decorator = new self($element); |
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$decorator->options = ['depth' => $depth] + $this->options; |
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if (isset($array[$name])) { |
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if (! \is_array($array[$name])) { |
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$array[$name] = [$array[$name]]; |
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} |
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$array[$name][] = $decorator; |
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} else { |
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$array[$name] = $decorator; |
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} |
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} |
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// json encode non-whitespace element simplexml text values. |
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$text = trim($subject); |
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if (\strlen($text)) { |
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if ($array) { |
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$this->options['@text'] && $array['@text'] = $text; |
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} else { |
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$array = $text; |
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} |
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} |
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// return empty elements as NULL (self-closing or empty tags) |
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if (! $array && '0' !== $array) { |
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$array = null; |
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} |
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return $array; |
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} |
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} |
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mtvbrianking /
laravel-xml
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