noccy/microdata-parser
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Extracted methods to a class

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This commit is contained in:
Yusuf Kandemir
2018-11-11 20:49:54 +03:00
parent dbfce2ae54
commit 0e2f17ac37
2 changed files with 194 additions and 186 deletions
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189
src/MicrodataDOMElement.php Normal file
View File

@@ -0,0 +1,189 @@
<?php
namespace YusufKandemir\MicrodataParser;
class MicrodataDOMElement extends \DOMElement
{
public function getProperties()
{
// Step 1
$results = [];
$memory = [];
$pending = [];
// Step 2
$memory[] = $this;
// Step 3
if ($this->hasChildNodes()) {
$childNodes = iterator_to_array($this->childNodes);
$childNodes = array_filter($childNodes, function ($node) {
return $node instanceof \DOMElement;
}); // Get only DOMElements
$pending = array_merge($pending, $childNodes);
}
// Step 4
if ($this->hasAttribute('itemref')) {
$tokens = preg_split('/\s+/', $this->getAttribute('itemref'));
foreach ($tokens as $token) {
// @todo Implement xpath query and get the first item
}
}
// Step 5
while ($pending) {
// Step 6
$current = array_pop($pending);
// Step 7
// in_array can't compare objects
/*if (in_array($current, $memory)) {
// There is MicrodataError
continue;
}*/
$error = false;
foreach ($memory as $memory_item) {
if ($current->isSameNode($memory_item)) {
// There is MicrodataError
$error = true;
break;
}
}
if ($error) {
continue;
}
// Step 8
$memory[] = $current;
// Step 9
if (! $current->hasAttribute('itemscope')) {
if ($current->hasChildNodes()) {
$childNodes = iterator_to_array($current->childNodes);
$childNodes = array_filter($childNodes, function ($node) {
return $node instanceof \DOMElement;
});
$pending = array_merge($pending, $childNodes);
}
}
// Step 10
if ($current->hasAttribute('itemprop') && /* hasPropertyNames */ $current->getPropertyNames()) {
$results[] = $current;
}
// Step 11: Return to loop
}
// Step 12: End of loop. Sort results in tree order.
$results = array_reverse($results);
// Step 13
return $results;
}
public function getPropertyNames()
{
// Step 1
$itemprop = $this->getAttribute('itemprop');
$tokens = $itemprop ? preg_split('/\s+/', $itemprop) : [];
// Step 2
$properties = [];
// Step 3
foreach ($tokens as $token) {
if ($this->isAbsoluteUri($token)) {
$properties[] = $token;
} elseif ($this->isTypedItem()) {
$properties[] = /*$vocabularyIdentifier . */ $token;
} else {
$properties[] = $token;
}
}
$properties = array_unique($properties);
return $properties;
}
public function getPropertyValue()
{
if ($this->hasAttribute('itemscope')) {
return $this;
}
if ($this->hasAttribute('content')) {
return $this->getAttribute('content');
}
$base = $this->ownerDocument->documentURI;
switch ($this->tagName) {
case 'audio':
case 'embed':
case 'iframe':
case 'img':
case 'source':
case 'track':
case 'video':
if ($this->hasAttribute('src')) {
$result = $this->getAttribute('src');
// @todo check against protocol relative urls like "//example.com/test.jpg"
return $this->isAbsoluteUri($result) ? $result : $base.$result;
}
case 'a':
case 'area':
case 'link':
if ($this->hasAttribute('href')) {
$result = $this->getAttribute('href');
return $this->isAbsoluteUri($result) ? $result : $base.$result;
}
case 'object':
if ($this->hasAttribute('data')) {
$result = $this->getAttribute('data');
return $this->isAbsoluteUri($result) ? $result : $base.$result;
}
case 'data':
case 'meter':
if ($this->hasAttribute('value')) {
return $this->getAttribute('value');
}
case 'time':
if ($this->hasAttribute('datetime')) {
return $this->getAttribute('datetime');
}
default:
return $this->textContent;
}
}
public function isTypedItem()
{
$tokens = [];
if ($this->hasAttribute('itemtype')) {
$tokens = preg_split("/\s+/", $this->getAttribute('itemtype'));
}
return !empty($tokens);
}
protected function isAbsoluteUri(string $uri)
{
return preg_match("/^\w+:/", trim($uri));
}
}

191
src/MicrodataParser.php
View File

@@ -8,6 +8,8 @@ class MicrodataParser
public function __construct(\DOMDocument $dom)
{
$dom->registerNodeClass(\DOMElement::class, MicrodataDOMElement::class);
$xpath = new \DOMXPath($dom);
$this->topLevelItems = $xpath->query('//*[@itemscope and not(@itemprop)]');
}
@@ -61,8 +63,8 @@ class MicrodataParser
$properties = new \stdClass;
// Step 7
foreach ($this->getProperties($item) as $element) {
$value = $this->getPropertyValue($element);
foreach ($item->getProperties() as $element) {
$value = $element->getPropertyValue();
if ($this->isItem($value)) {
foreach ($memory as $memory_item) {
@@ -76,7 +78,7 @@ class MicrodataParser
}
}
foreach ($this->getPropertyNames($element) as $name) {
foreach ($element->getPropertyNames() as $name) {
$properties->{$name}[] = $value;
}
}
@@ -88,191 +90,8 @@ class MicrodataParser
return $result;
}
protected function getPropertyNames(\DOMElement $item)
{
// Step 1
$itemprop = $item->getAttribute('itemprop');
$tokens = $itemprop ? preg_split('/\s+/', $itemprop) : [];
// Step 2
$properties = [];
// Step 3
foreach ($tokens as $token) {
if ($this->isAbsoluteUri($token)) {
$properties[] = $token;
} elseif ($this->isTypedItem($item)) {
$properties[] = /*$vocabularyIdentifier . */ $token;
} else {
$properties[] = $token;
}
}
$properties = array_unique($properties);
return $properties;
}
protected function getProperties(\DOMElement $root)
{
// Step 1
$results = [];
$memory = [];
$pending = [];
// Step 2
$memory[] = $root;
// Step 3
if ($root->hasChildNodes()) {
$childNodes = iterator_to_array($root->childNodes);
$childNodes = array_filter($childNodes, function ($node) {
return $node instanceof \DOMElement;
}); // Get only DOMElements
$pending = array_merge($pending, $childNodes);
}
// Step 4
if ($root->hasAttribute('itemref')) {
$tokens = preg_split('/\s+/', $root->getAttribute('itemref'));
foreach ($tokens as $token) {
// @todo Implement xpath query and get the first item
}
}
// Step 5
while ($pending) {
// Step 6
$current = array_pop($pending);
// Step 7
// in_array can't compare objects
/*if (in_array($current, $memory)) {
// There is MicrodataError
continue;
}*/
$error = false;
foreach ($memory as $memory_item) {
if ($current->isSameNode($memory_item)) {
// There is MicrodataError
$error = true;
break;
}
}
if ($error) {
continue;
}
// Step 8
$memory[] = $current;
// Step 9
if (! $current->hasAttribute('itemscope')) {
if ($current->hasChildNodes()) {
$childNodes = iterator_to_array($current->childNodes);
$childNodes = array_filter($childNodes, function ($node) {
return $node instanceof \DOMElement;
});
$pending = array_merge($pending, $childNodes);
}
}
// Step 10
if ($current->hasAttribute('itemprop') && /* hasPropertyNames */ $this->getPropertyNames($current)) {
$results[] = $current;
}
// Step 11: Return to loop
}
// Step 12: End of loop. Sort results in tree order.
$results = array_reverse($results);
// Step 13
return $results;
}
protected function getPropertyValue(\DOMElement $item)
{
if ($item->hasAttribute('itemscope')) {
return $item;
}
if ($item->hasAttribute('content')) {
return $item->getAttribute('content');
}
$base = $item->ownerDocument->documentURI;
switch ($item->tagName) {
case 'audio':
case 'embed':
case 'iframe':
case 'img':
case 'source':
case 'track':
case 'video':
if ($item->hasAttribute('src')) {
$result = $item->getAttribute('src');
// @todo check against protocol relative urls like "//example.com/test.jpg"
return $this->isAbsoluteUri($result) ? $result : $base.$result;
}
case 'a':
case 'area':
case 'link':
if ($item->hasAttribute('href')) {
$result = $item->getAttribute('href');
return $this->isAbsoluteUri($result) ? $result : $base.$result;
}
case 'object':
if ($item->hasAttribute('data')) {
$result = $item->getAttribute('data');
return $this->isAbsoluteUri($result) ? $result : $base.$result;
}
case 'data':
case 'meter':
if ($item->hasAttribute('value')) {
return $item->getAttribute('value');
}
case 'time':
if ($item->hasAttribute('datetime')) {
return $item->getAttribute('datetime');
}
default:
return $item->textContent;
}
}
protected function isItem($element)
{
return $element instanceof \DOMElement && $element->hasAttribute('itemscope');
}
protected function isTypedItem(\DOMElement $item)
{
$tokens = [];
if ($item->hasAttribute('itemtype')) {
$tokens = preg_split("/\s+/", $item->getAttribute('itemtype'));
}
return !empty($tokens);
}
protected function isAbsoluteUri(string $uri)
{
return preg_match("/^\w+:/", trim($uri));
}
}