* * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\CssSelector\XPath\Extension; use Symfony\Component\CssSelector\XPath\Translator; use Symfony\Component\CssSelector\XPath\XPathExpr; /** * XPath expression translator attribute extension. * * This component is a port of the Python cssselect library, * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect. * * @author Jean-François Simon * * @internal */ class AttributeMatchingExtension extends AbstractExtension { /** * {@inheritdoc} */ 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) )); } /** * {@inheritdoc} */ public function getName(): string { return 'attribute-matching'; } }