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Symfony\Component\CssSelector\XPath\Extension

AttributeMatchingExtension{} WC 1.0

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.

Хуков нет.

Возвращает

Null. Ничего.

Использование

$AttributeMatchingExtension = new AttributeMatchingExtension();
// use class methods

Методы

  1. getAttributeMatchingTranslators()
  2. getName()
  3. translateDashMatch(XPathExpr $xpath, $attribute, $value)
  4. translateDifferent(XPathExpr $xpath, $attribute, $value)
  5. translateEquals(XPathExpr $xpath, $attribute, $value)
  6. translateExists(XPathExpr $xpath, $attribute, $value)
  7. translateIncludes(XPathExpr $xpath, $attribute, $value)
  8. translatePrefixMatch(XPathExpr $xpath, $attribute, $value)
  9. translateSubstringMatch(XPathExpr $xpath, $attribute, $value)
  10. translateSuffixMatch(XPathExpr $xpath, $attribute, $value)

Код AttributeMatchingExtension{} WC 4.6.1

<?php
class AttributeMatchingExtension extends AbstractExtension
{
    /**
     * {@inheritdoc}
     */
    public function getAttributeMatchingTranslators()
    {
        return [
            'exists' => [$this, 'translateExists'],
            '=' => [$this, 'translateEquals'],
            '~=' => [$this, 'translateIncludes'],
            '|=' => [$this, 'translateDashMatch'],
            '^=' => [$this, 'translatePrefixMatch'],
            '$=' => [$this, 'translateSuffixMatch'],
            '*=' => [$this, 'translateSubstringMatch'],
            '!=' => [$this, 'translateDifferent'],
        ];
    }

    /**
     * @param string $attribute
     * @param string $value
     *
     * @return XPathExpr
     */
    public function translateExists(XPathExpr $xpath, $attribute, $value)
    {
        return $xpath->addCondition($attribute);
    }

    /**
     * @param string $attribute
     * @param string $value
     *
     * @return XPathExpr
     */
    public function translateEquals(XPathExpr $xpath, $attribute, $value)
    {
        return $xpath->addCondition(sprintf('%s = %s', $attribute, Translator::getXpathLiteral($value)));
    }

    /**
     * @param string $attribute
     * @param string $value
     *
     * @return XPathExpr
     */
    public function translateIncludes(XPathExpr $xpath, $attribute, $value)
    {
        return $xpath->addCondition($value ? sprintf(
            '%1$s and contains(concat(\' \', normalize-space(%1$s), \' \'), %2$s)',
            $attribute,
            Translator::getXpathLiteral(' '.$value.' ')
        ) : '0');
    }

    /**
     * @param string $attribute
     * @param string $value
     *
     * @return XPathExpr
     */
    public function translateDashMatch(XPathExpr $xpath, $attribute, $value)
    {
        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.'-')
        ));
    }

    /**
     * @param string $attribute
     * @param string $value
     *
     * @return XPathExpr
     */
    public function translatePrefixMatch(XPathExpr $xpath, $attribute, $value)
    {
        return $xpath->addCondition($value ? sprintf(
            '%1$s and starts-with(%1$s, %2$s)',
            $attribute,
            Translator::getXpathLiteral($value)
        ) : '0');
    }

    /**
     * @param string $attribute
     * @param string $value
     *
     * @return XPathExpr
     */
    public function translateSuffixMatch(XPathExpr $xpath, $attribute, $value)
    {
        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');
    }

    /**
     * @param string $attribute
     * @param string $value
     *
     * @return XPathExpr
     */
    public function translateSubstringMatch(XPathExpr $xpath, $attribute, $value)
    {
        return $xpath->addCondition($value ? sprintf(
            '%1$s and contains(%1$s, %2$s)',
            $attribute,
            Translator::getXpathLiteral($value)
        ) : '0');
    }

    /**
     * @param string $attribute
     * @param string $value
     *
     * @return XPathExpr
     */
    public function translateDifferent(XPathExpr $xpath, $attribute, $value)
    {
        return $xpath->addCondition(sprintf(
            $value ? 'not(%1$s) or %1$s != %2$s' : '%s != %s',
            $attribute,
            Translator::getXpathLiteral($value)
        ));
    }

    /**
     * {@inheritdoc}
     */
    public function getName()
    {
        return 'attribute-matching';
    }
}