class AttributeMatchingExtension
XPath expression translator attribute extension.
This component is a port of the Python cssselect library, which is copyright Ian Bicking, @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
@internal
Hierarchy
- class \Symfony\Component\CssSelector\XPath\Extension\AbstractExtension implements \Symfony\Component\CssSelector\XPath\Extension\ExtensionInterface
- class \Symfony\Component\CssSelector\XPath\Extension\AttributeMatchingExtension extends \Symfony\Component\CssSelector\XPath\Extension\AbstractExtension
Expanded class hierarchy of AttributeMatchingExtension
See also
https://github.com/SimonSapin/cssselect.
File
-
vendor/
symfony/ css-selector/ XPath/ Extension/ AttributeMatchingExtension.php, line 27
Namespace
Symfony\Component\CssSelector\XPath\ExtensionView source
class AttributeMatchingExtension extends AbstractExtension {
public function getAttributeMatchingTranslators() : array {
return [
'exists' => $this->translateExists(...),
'=' => $this->translateEquals(...),
'~=' => $this->translateIncludes(...),
'|=' => $this->translateDashMatch(...),
'^=' => $this->translatePrefixMatch(...),
'$=' => $this->translateSuffixMatch(...),
'*=' => $this->translateSubstringMatch(...),
'!=' => $this->translateDifferent(...),
];
}
public function translateExists(XPathExpr $xpath, string $attribute, ?string $value) : XPathExpr {
return $xpath->addCondition($attribute);
}
public function translateEquals(XPathExpr $xpath, string $attribute, ?string $value) : XPathExpr {
return $xpath->addCondition(\sprintf('%s = %s', $attribute, Translator::getXpathLiteral($value)));
}
public function translateIncludes(XPathExpr $xpath, string $attribute, ?string $value) : XPathExpr {
return $xpath->addCondition($value ? \sprintf('%1$s and contains(concat(\' \', normalize-space(%1$s), \' \'), %2$s)', $attribute, Translator::getXpathLiteral(' ' . $value . ' ')) : '0');
}
public function translateDashMatch(XPathExpr $xpath, string $attribute, ?string $value) : XPathExpr {
return $xpath->addCondition(\sprintf('%1$s and (%1$s = %2$s or starts-with(%1$s, %3$s))', $attribute, Translator::getXpathLiteral($value), Translator::getXpathLiteral($value . '-')));
}
public function translatePrefixMatch(XPathExpr $xpath, string $attribute, ?string $value) : XPathExpr {
return $xpath->addCondition($value ? \sprintf('%1$s and starts-with(%1$s, %2$s)', $attribute, Translator::getXpathLiteral($value)) : '0');
}
public function translateSuffixMatch(XPathExpr $xpath, string $attribute, ?string $value) : XPathExpr {
return $xpath->addCondition($value ? \sprintf('%1$s and substring(%1$s, string-length(%1$s)-%2$s) = %3$s', $attribute, \strlen($value) - 1, Translator::getXpathLiteral($value)) : '0');
}
public function translateSubstringMatch(XPathExpr $xpath, string $attribute, ?string $value) : XPathExpr {
return $xpath->addCondition($value ? \sprintf('%1$s and contains(%1$s, %2$s)', $attribute, Translator::getXpathLiteral($value)) : '0');
}
public function translateDifferent(XPathExpr $xpath, string $attribute, ?string $value) : XPathExpr {
return $xpath->addCondition(\sprintf($value ? 'not(%1$s) or %1$s != %2$s' : '%s != %s', $attribute, Translator::getXpathLiteral($value)));
}
public function getName() : string {
return 'attribute-matching';
}
}