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<?php
declare(strict_types=1);
namespace voku\helper;
/**
* @noinspection PhpHierarchyChecksInspection
*
* {@inheritdoc}
*
* @implements \IteratorAggregate<int, \DOMNode>
*/
class SimpleXmlDom extends AbstractSimpleXmlDom implements \IteratorAggregate, SimpleXmlDomInterface
{
/**
* @param \DOMElement|\DOMNode $node
*/
public function __construct(\DOMNode $node)
{
$this->node = $node;
}
/**
* @param string $name
* @param array $arguments
*
* @throws \BadMethodCallException
*
* @return SimpleXmlDomInterface|string|null
*/
public function __call($name, $arguments)
{
$name = \strtolower($name);
if (isset(self::$functionAliases[$name])) {
return \call_user_func_array([$this, self::$functionAliases[$name]], $arguments);
}
throw new \BadMethodCallException('Method does not exist');
}
/**
* Find list of nodes with a CSS or xPath selector.
*
* @param string $selector
* @param int|null $idx
*
* @return SimpleXmlDomInterface|SimpleXmlDomInterface[]|SimpleXmlDomNodeInterface<SimpleXmlDomInterface>
*/
public function find(string $selector, $idx = null)
{
return $this->getXmlDomParser()->find($selector, $idx);
}
/**
* Returns an array of attributes.
*
* @return string[]|null
*/
public function getAllAttributes()
{
if (
$this->node
&&
$this->node->hasAttributes()
) {
$attributes = [];
foreach ($this->node->attributes ?? [] as $attr) {
$attributes[$attr->name] = XmlDomParser::putReplacedBackToPreserveHtmlEntities($attr->value);
}
return $attributes;
}
return null;
}
/**
* @return bool
*/
public function hasAttributes(): bool
{
return $this->node->hasAttributes();
}
/**
* Return attribute value.
*
* @param string $name
*
* @return string
*/
public function getAttribute(string $name): string
{
if ($this->node instanceof \DOMElement) {
return XmlDomParser::putReplacedBackToPreserveHtmlEntities(
$this->node->getAttribute($name)
);
}
return '';
}
/**
* Determine if an attribute exists on the element.
*
* @param string $name
*
* @return bool
*/
public function hasAttribute(string $name): bool
{
if (!$this->node instanceof \DOMElement) {
return false;
}
return $this->node->hasAttribute($name);
}
/**
* Get dom node's inner html.
*
* @param bool $multiDecodeNewHtmlEntity
*
* @return string
*/
public function innerXml(bool $multiDecodeNewHtmlEntity = false): string
{
return $this->getXmlDomParser()->innerXml($multiDecodeNewHtmlEntity);
}
/**
* Remove attribute.
*
* @param string $name <p>The name of the html-attribute.</p>
*
* @return SimpleXmlDomInterface
*/
public function removeAttribute(string $name): SimpleXmlDomInterface
{
if (\method_exists($this->node, 'removeAttribute')) {
$this->node->removeAttribute($name);
}
return $this;
}
/**
* Replace child node.
*
* @param string $string
* @param bool $putBrokenReplacedBack
*
* @return SimpleXmlDomInterface
*/
protected function replaceChildWithString(string $string, bool $putBrokenReplacedBack = true): SimpleXmlDomInterface
{
if (!empty($string)) {
$newDocument = new XmlDomParser($string);
$tmpDomString = $this->normalizeStringForComparision($newDocument);
$tmpStr = $this->normalizeStringForComparision($string);
if ($tmpDomString !== $tmpStr) {
throw new \RuntimeException(
'Not valid XML fragment!' . "\n" .
$tmpDomString . "\n" .
$tmpStr
);
}
}
/** @var \DOMNode[] $remove_nodes */
$remove_nodes = [];
if ($this->node->childNodes->length > 0) {
// INFO: We need to fetch the nodes first, before we can delete them, because of missing references in the dom,
// if we delete the elements on the fly.
foreach ($this->node->childNodes as $node) {
$remove_nodes[] = $node;
}
}
foreach ($remove_nodes as $remove_node) {
$this->node->removeChild($remove_node);
}
if (!empty($newDocument)) {
$ownerDocument = $this->node->ownerDocument;
if (
$ownerDocument
&&
$newDocument->getDocument()->documentElement
) {
$newNode = $ownerDocument->importNode($newDocument->getDocument()->documentElement, true);
/** @noinspection UnusedFunctionResultInspection */
$this->node->appendChild($newNode);
}
}
return $this;
}
/**
* Replace this node.
*
* @param string $string
*
* @return SimpleXmlDomInterface
*/
protected function replaceNodeWithString(string $string): SimpleXmlDomInterface
{
if (empty($string)) {
if ($this->node->parentNode) {
$this->node->parentNode->removeChild($this->node);
}
return $this;
}
$newDocument = new XmlDomParser($string);
$tmpDomOuterTextString = $this->normalizeStringForComparision($newDocument);
$tmpStr = $this->normalizeStringForComparision($string);
if ($tmpDomOuterTextString !== $tmpStr) {
throw new \RuntimeException(
'Not valid XML fragment!' . "\n"
. $tmpDomOuterTextString . "\n" .
$tmpStr
);
}
$ownerDocument = $this->node->ownerDocument;
if (
$ownerDocument === null
||
$newDocument->getDocument()->documentElement === null
) {
return $this;
}
$newNode = $ownerDocument->importNode($newDocument->getDocument()->documentElement, true);
$this->node->parentNode->replaceChild($newNode, $this->node);
$this->node = $newNode;
return $this;
}
/**
* Replace this node with text
*
* @param string $string
*
* @return SimpleXmlDomInterface
*/
protected function replaceTextWithString($string): SimpleXmlDomInterface
{
if (empty($string)) {
if ($this->node->parentNode) {
$this->node->parentNode->removeChild($this->node);
}
return $this;
}
$ownerDocument = $this->node->ownerDocument;
if ($ownerDocument) {
$newElement = $ownerDocument->createTextNode($string);
$newNode = $ownerDocument->importNode($newElement, true);
$this->node->parentNode->replaceChild($newNode, $this->node);
$this->node = $newNode;
}
return $this;
}
/**
* Set attribute value.
*
* @param string $name <p>The name of the html-attribute.</p>
* @param string|null $value <p>Set to NULL or empty string, to remove the attribute.</p>
* @param bool $strictEmptyValueCheck </p>
* $value must be NULL, to remove the attribute,
* so that you can set an empty string as attribute-value e.g. autofocus=""
* </p>
*
* @return SimpleXmlDomInterface
*/
public function setAttribute(string $name, $value = null, bool $strictEmptyValueCheck = false): SimpleXmlDomInterface
{
if (
($strictEmptyValueCheck && $value === null)
||
(!$strictEmptyValueCheck && empty($value))
) {
/** @noinspection UnusedFunctionResultInspection */
$this->removeAttribute($name);
} elseif (\method_exists($this->node, 'setAttribute')) {
/** @noinspection UnusedFunctionResultInspection */
$this->node->setAttribute($name, HtmlDomParser::replaceToPreserveHtmlEntities((string) $value));
}
return $this;
}
/**
* Get dom node's plain text.
*
* @return string
*/
public function text(): string
{
return $this->getXmlDomParser()->fixHtmlOutput($this->node->textContent);
}
/**
* Get dom node's outer html.
*
* @param bool $multiDecodeNewHtmlEntity
*
* @return string
*/
public function xml(bool $multiDecodeNewHtmlEntity = false): string
{
return $this->getXmlDomParser()->xml($multiDecodeNewHtmlEntity, false);
}
/**
* Change the name of a tag in a "DOMNode".
*
* @param \DOMNode $node
* @param string $name
*
* @return \DOMElement|false
* <p>DOMElement a new instance of class DOMElement or false
* if an error occured.</p>
*/
protected function changeElementName(\DOMNode $node, string $name)
{
$ownerDocument = $node->ownerDocument;
if (!$ownerDocument) {
return false;
}
$newNode = $ownerDocument->createElement($name);
foreach ($node->childNodes as $child) {
$child = $ownerDocument->importNode($child, true);
$newNode->appendChild($child);
}
foreach ($node->attributes ?? [] as $attrName => $attrNode) {
/** @noinspection UnusedFunctionResultInspection */
$newNode->setAttribute($attrName, $attrNode);
}
if ($newNode->ownerDocument) {
/** @noinspection UnusedFunctionResultInspection */
$newNode->ownerDocument->replaceChild($newNode, $node);
}
return $newNode;
}
/**
* Returns children of node.
*
* @param int $idx
*
* @return SimpleXmlDomInterface|SimpleXmlDomInterface[]|SimpleXmlDomNodeInterface<SimpleXmlDomInterface>|null
*/
public function childNodes(int $idx = -1)
{
$nodeList = $this->getIterator();
if ($idx === -1) {
return $nodeList;
}
return $nodeList[$idx] ?? null;
}
/**
* Find nodes with a CSS or xPath selector.
*
* @param string $selector
*
* @return SimpleXmlDomInterface[]|SimpleXmlDomNodeInterface<SimpleXmlDomInterface>
*/
public function findMulti(string $selector): SimpleXmlDomNodeInterface
{
return $this->getXmlDomParser()->findMulti($selector);
}
/**
* Find nodes with a CSS or xPath selector.
*
* @param string $selector
*
* @return false|SimpleXmlDomInterface[]|SimpleXmlDomNodeInterface<SimpleXmlDomInterface>
*/
public function findMultiOrFalse(string $selector)
{
return $this->getXmlDomParser()->findMultiOrFalse($selector);
}
/**
* Find one node with a CSS or xPath selector.
*
* @param string $selector
*
* @return SimpleXmlDomInterface
*/
public function findOne(string $selector): SimpleXmlDomInterface
{
return $this->getXmlDomParser()->findOne($selector);
}
/**
* Find one node with a CSS or xPath selector or false, if no element is found.
*
* @param string $selector
*
* @return false|SimpleXmlDomInterface
*/
public function findOneOrFalse(string $selector)
{
return $this->getXmlDomParser()->findOneOrFalse($selector);
}
/**
* Returns the first child of node.
*
* @return SimpleXmlDomInterface|null
*/
public function firstChild()
{
/** @var \DOMNode|null $node */
$node = $this->node->firstChild;
if ($node === null) {
return null;
}
return new static($node);
}
/**
* Return elements by ".class".
*
* @param string $class
*
* @return SimpleXmlDomInterface[]|SimpleXmlDomNodeInterface<SimpleXmlDomInterface>
*/
public function getElementByClass(string $class): SimpleXmlDomNodeInterface
{
return $this->findMulti(".${class}");
}
/**
* Return element by #id.
*
* @param string $id
*
* @return SimpleXmlDomInterface
*/
public function getElementById(string $id): SimpleXmlDomInterface
{
return $this->findOne("#${id}");
}
/**
* Return element by tag name.
*
* @param string $name
*
* @return SimpleXmlDomInterface
*/
public function getElementByTagName(string $name): SimpleXmlDomInterface
{
if ($this->node instanceof \DOMElement) {
$node = $this->node->getElementsByTagName($name)->item(0);
} else {
$node = null;
}
if ($node === null) {
return new SimpleXmlDomBlank();
}
return new static($node);
}
/**
* Returns elements by "#id".
*
* @param string $id
* @param int|null $idx
*
* @return SimpleXmlDomInterface|SimpleXmlDomInterface[]|SimpleXmlDomNodeInterface<SimpleXmlDomInterface>
*/
public function getElementsById(string $id, $idx = null)
{
return $this->find("#${id}", $idx);
}
/**
* Returns elements by tag name.
*
* @param string $name
* @param int|null $idx
*
* @return SimpleXmlDomInterface|SimpleXmlDomInterface[]|SimpleXmlDomNodeInterface<SimpleXmlDomInterface>
*/
public function getElementsByTagName(string $name, $idx = null)
{
if ($this->node instanceof \DOMElement) {
$nodesList = $this->node->getElementsByTagName($name);
} else {
$nodesList = [];
}
$elements = new SimpleXmlDomNode();
foreach ($nodesList as $node) {
$elements[] = new static($node);
}
// return all elements
if ($idx === null) {
if (\count($elements) === 0) {
return new SimpleXmlDomNodeBlank();
}
return $elements;
}
// handle negative values
if ($idx < 0) {
$idx = \count($elements) + $idx;
}
// return one element
return $elements[$idx] ?? new SimpleXmlDomBlank();
}
/**
* @return \DOMNode
*/
public function getNode(): \DOMNode
{
return $this->node;
}
/**
* Create a new "XmlDomParser"-object from the current context.
*
* @return XmlDomParser
*/
public function getXmlDomParser(): XmlDomParser
{
return new XmlDomParser($this);
}
/**
* Get dom node's inner html.
*
* @param bool $multiDecodeNewHtmlEntity
* @param bool $putBrokenReplacedBack
*
* @return string
*/
public function innerHtml(bool $multiDecodeNewHtmlEntity = false, bool $putBrokenReplacedBack = true): string
{
return $this->getXmlDomParser()->innerHtml($multiDecodeNewHtmlEntity, $putBrokenReplacedBack);
}
/**
* Nodes can get partially destroyed in which they're still an
* actual DOM node (such as \DOMElement) but almost their entire
* body is gone, including the `nodeType` attribute.
*
* @return bool true if node has been destroyed
*/
public function isRemoved(): bool
{
return !isset($this->node->nodeType);
}
/**
* Returns the last child of node.
*
* @return SimpleXmlDomInterface|null
*/
public function lastChild()
{
/** @var \DOMNode|null $node */
$node = $this->node->lastChild;
if ($node === null) {
return null;
}
return new static($node);
}
/**
* Returns the next sibling of node.
*
* @return SimpleXmlDomInterface|null
*/
public function nextSibling()
{
/** @var \DOMNode|null $node */
$node = $this->node->nextSibling;
if ($node === null) {
return null;
}
return new static($node);
}
/**
* Returns the next sibling of node.
*
* @return SimpleXmlDomInterface|null
*/
public function nextNonWhitespaceSibling()
{
/** @var \DOMNode|null $node */
$node = $this->node->nextSibling;
if ($node === null) {
return null;
}
while ($node && !\trim($node->textContent)) {
/** @var \DOMNode|null $node */
$node = $node->nextSibling;
}
return new static($node);
}
/**
* Returns the parent of node.
*
* @return SimpleXmlDomInterface
*/
public function parentNode(): SimpleXmlDomInterface
{
return new static($this->node->parentNode);
}
/**
* Returns the previous sibling of node.
*
* @return SimpleXmlDomInterface|null
*/
public function previousSibling()
{
/** @var \DOMNode|null $node */
$node = $this->node->previousSibling;
if ($node === null) {
return null;
}
return new static($node);
}
/**
* Returns the previous sibling of node.
*
* @return SimpleXmlDomInterface|null
*/
public function previousNonWhitespaceSibling()
{
/** @var \DOMNode|null $node */
$node = $this->node->previousSibling;
while ($node && !\trim($node->textContent)) {
/** @var \DOMNode|null $node */
$node = $node->previousSibling;
}
if ($node === null) {
return null;
}
return new static($node);
}
/**
* @param string|string[]|null $value <p>
* null === get the current input value
* text === set a new input value
* </p>
*
* @return string|string[]|null
*/
public function val($value = null)
{
if ($value === null) {
if (
$this->tag === 'input'
&&
(
$this->getAttribute('type') === 'hidden'
||
$this->getAttribute('type') === 'text'
||
!$this->hasAttribute('type')
)
) {
return $this->getAttribute('value');
}
if (
$this->hasAttribute('checked')
&&
\in_array($this->getAttribute('type'), ['checkbox', 'radio'], true)
) {
return $this->getAttribute('value');
}
if ($this->node->nodeName === 'select') {
$valuesFromDom = [];
$options = $this->getElementsByTagName('option');
if ($options instanceof SimpleXmlDomNode) {
foreach ($options as $option) {
if ($this->hasAttribute('checked')) {
$valuesFromDom[] = (string) $option->getAttribute('value');
}
}
}
if (\count($valuesFromDom) === 0) {
return null;
}
return $valuesFromDom;
}
if ($this->node->nodeName === 'textarea') {
return $this->node->nodeValue;
}
} else {
/** @noinspection NestedPositiveIfStatementsInspection */
if (\in_array($this->getAttribute('type'), ['checkbox', 'radio'], true)) {
if ($value === $this->getAttribute('value')) {
/** @noinspection UnusedFunctionResultInspection */
$this->setAttribute('checked', 'checked');
} else {
/** @noinspection UnusedFunctionResultInspection */
$this->removeAttribute('checked');
}
} elseif ($this->node instanceof \DOMElement && $this->node->nodeName === 'select') {
foreach ($this->node->getElementsByTagName('option') as $option) {
/** @var \DOMElement $option */
if ($value === $option->getAttribute('value')) {
/** @noinspection UnusedFunctionResultInspection */
$option->setAttribute('selected', 'selected');
} else {
$option->removeAttribute('selected');
}
}
} elseif ($this->node->nodeName === 'input' && \is_string($value)) {
// Set value for input elements
/** @noinspection UnusedFunctionResultInspection */
$this->setAttribute('value', $value);
} elseif ($this->node->nodeName === 'textarea' && \is_string($value)) {
$this->node->nodeValue = $value;
}
}
return null;
}
/**
* Retrieve an external iterator.
*
* @see http://php.net/manual/en/iteratoraggregate.getiterator.php
*
* @return SimpleXmlDomNode
* <p>
* An instance of an object implementing <b>Iterator</b> or
* <b>Traversable</b>
* </p>
*/
public function getIterator(): SimpleXmlDomNodeInterface
{
$elements = new SimpleXmlDomNode();
if ($this->node->hasChildNodes()) {
foreach ($this->node->childNodes as $node) {
$elements[] = new static($node);
}
}
return $elements;
}
/**
* Normalize the given input for comparision.
*
* @param string|XmlDomParser $input
*
* @return string
*/
private function normalizeStringForComparision($input): string
{
if ($input instanceof XmlDomParser) {
$string = $input->html(false, false);
} else {
$string = (string) $input;
}
return
\urlencode(
\urldecode(
\trim(
\str_replace(
[
' ',
"\n",
"\r",
'/>',
],
[
'',
'',
'',
'>',
],
\strtolower($string)
)
)
)
);
}
}