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PK     {+]�Ѽ`P  P    Extension/NodeExtension.phpnu �[���        <?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * 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\Node;
use Symfony\Component\CssSelector\XPath\Translator;
use Symfony\Component\CssSelector\XPath\XPathExpr;

/**
 * XPath expression translator node extension.
 *
 * This component is a port of the Python cssselector library,
 * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
 *
 * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
 */
class NodeExtension extends AbstractExtension
{
    const ELEMENT_NAME_IN_LOWER_CASE    = 1;
    const ATTRIBUTE_NAME_IN_LOWER_CASE  = 2;
    const ATTRIBUTE_VALUE_IN_LOWER_CASE = 4;

    /**
     * @var Translator
     */
    private $translator;

    /**
     * @var int
     */
    private $flags;

    /**
     * Constructor.
     *
     * @param Translator $translator
     * @param int        $flags
     */
    public function __construct(Translator $translator, $flags = 0)
    {
        $this->translator = $translator;
        $this->flags = $flags;
    }

    /**
     * @param int     $flag
     * @param boolean $on
     *
     * @return NodeExtension
     */
    public function setFlag($flag, $on)
    {
        if ($on && !$this->hasFlag($flag)) {
            $this->flags += $flag;
        }

        if (!$on && $this->hasFlag($flag)) {
            $this->flags -= $flag;
        }

        return $this;
    }

    /**
     * @param int $flag
     *
     * @return boolean
     */
    public function hasFlag($flag)
    {
        return $this->flags & $flag;
    }

    /**
     * {@inheritdoc}
     */
    public function getNodeTranslators()
    {
        return array(
            'Selector'         => array($this, 'translateSelector'),
            'CombinedSelector' => array($this, 'translateCombinedSelector'),
            'Negation'         => array($this, 'translateNegation'),
            'Function'         => array($this, 'translateFunction'),
            'Pseudo'           => array($this, 'translatePseudo'),
            'Attribute'        => array($this, 'translateAttribute'),
            'Class'            => array($this, 'translateClass'),
            'Hash'             => array($this, 'translateHash'),
            'Element'          => array($this, 'translateElement'),
        );
    }

    /**
     * @param Node\SelectorNode $node
     *
     * @return XPathExpr
     */
    public function translateSelector(Node\SelectorNode $node)
    {
        return $this->translator->nodeToXPath($node->getTree());
    }

    /**
     * @param Node\CombinedSelectorNode $node
     *
     * @return XPathExpr
     */
    public function translateCombinedSelector(Node\CombinedSelectorNode $node)
    {
        return $this->translator->addCombination($node->getCombinator(), $node->getSelector(), $node->getSubSelector());
    }

    /**
     * @param Node\NegationNode $node
     *
     * @return XPathExpr
     */
    public function translateNegation(Node\NegationNode $node)
    {
        $xpath = $this->translator->nodeToXPath($node->getSelector());
        $subXpath = $this->translator->nodeToXPath($node->getSubSelector());
        $subXpath->addNameTest();

        if ($subXpath->getCondition()) {
            return $xpath->addCondition(sprintf('not(%s)', $subXpath->getCondition()));
        }

        return $xpath->addCondition('0');
    }

    /**
     * @param Node\FunctionNode $node
     *
     * @return XPathExpr
     */
    public function translateFunction(Node\FunctionNode $node)
    {
        $xpath = $this->translator->nodeToXPath($node->getSelector());

        return $this->translator->addFunction($xpath, $node);
    }

    /**
     * @param Node\PseudoNode $node
     *
     * @return XPathExpr
     */
    public function translatePseudo(Node\PseudoNode $node)
    {
        $xpath = $this->translator->nodeToXPath($node->getSelector());

        return $this->translator->addPseudoClass($xpath, $node->getIdentifier());
    }

    /**
     * @param Node\AttributeNode $node
     *
     * @return XPathExpr
     */
    public function translateAttribute(Node\AttributeNode $node)
    {
        $name = $node->getAttribute();
        $safe = $this->isSafeName($name);

        if ($this->hasFlag(self::ATTRIBUTE_NAME_IN_LOWER_CASE)) {
            $name = strtolower($name);
        }

        if ($node->getNamespace()) {
            $name = sprintf('%s:%s', $node->getNamespace(), $name);
            $safe = $safe && $this->isSafeName($node->getNamespace());
        }

        $attribute = $safe ? '@'.$name : sprintf('attribute::*[name() = %s]', Translator::getXpathLiteral($name));
        $value = $node->getValue();
        $xpath = $this->translator->nodeToXPath($node->getSelector());

        if ($this->hasFlag(self::ATTRIBUTE_VALUE_IN_LOWER_CASE)) {
            $value = strtolower($value);
        }

        return $this->translator->addAttributeMatching($xpath, $node->getOperator(), $attribute, $value);
    }

    /**
     * @param Node\ClassNode $node
     *
     * @return XPathExpr
     */
    public function translateClass(Node\ClassNode $node)
    {
        $xpath = $this->translator->nodeToXPath($node->getSelector());

        return $this->translator->addAttributeMatching($xpath, '~=', '@class', $node->getName());
    }

    /**
     * @param Node\HashNode $node
     *
     * @return XPathExpr
     */
    public function translateHash(Node\HashNode $node)
    {
        $xpath = $this->translator->nodeToXPath($node->getSelector());

        return $this->translator->addAttributeMatching($xpath, '=', '@id', $node->getId());
    }

    /**
     * @param Node\ElementNode $node
     *
     * @return XPathExpr
     */
    public function translateElement(Node\ElementNode $node)
    {
        $element = $node->getElement();

        if ($this->hasFlag(self::ELEMENT_NAME_IN_LOWER_CASE)) {
            $element = strtolower($element);
        }

        if ($element) {
            $safe = $this->isSafeName($element);
        } else {
            $element = '*';
            $safe = true;
        }

        if ($node->getNamespace()) {
            $element = sprintf('%s:%s', $node->getNamespace(), $element);
            $safe = $safe && $this->isSafeName($node->getNamespace());
        }

        $xpath = new XPathExpr('', $element);

        if (!$safe) {
            $xpath->addNameTest();
        }

        return $xpath;
    }

    /**
     * {@inheritdoc}
     */
    public function getName()
    {
        return 'node';
    }

    /**
     * Tests if given name is safe.
     *
     * @param string $name
     *
     * @return boolean
     */
    private function isSafeName($name)
    {
        return 0 < preg_match('~^[a-zA-Z_][a-zA-Z0-9_.-]*$~', $name);
    }
}
PK     {+] ���  �  "  Extension/PseudoClassExtension.phpnu �[���        <?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * 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\Exception\ExpressionErrorException;
use Symfony\Component\CssSelector\XPath\XPathExpr;

/**
 * XPath expression translator pseudo-class extension.
 *
 * This component is a port of the Python cssselector library,
 * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
 *
 * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
 */
class PseudoClassExtension extends AbstractExtension
{
    /**
     * {@inheritdoc}
     */
    public function getPseudoClassTranslators()
    {
        return array(
            'root'          => array($this, 'translateRoot'),
            'first-child'   => array($this, 'translateFirstChild'),
            'last-child'    => array($this, 'translateLastChild'),
            'first-of-type' => array($this, 'translateFirstOfType'),
            'last-of-type'  => array($this, 'translateLastOfType'),
            'only-child'    => array($this, 'translateOnlyChild'),
            'only-of-type'  => array($this, 'translateOnlyOfType'),
            'empty'         => array($this, 'translateEmpty'),
        );
    }

    /**
     * @param XPathExpr $xpath
     *
     * @return XPathExpr
     */
    public function translateRoot(XPathExpr $xpath)
    {
        return $xpath->addCondition('not(parent::*)');
    }

    /**
     * @param XPathExpr $xpath
     *
     * @return XPathExpr
     */
    public function translateFirstChild(XPathExpr $xpath)
    {
        return $xpath
            ->addStarPrefix()
            ->addNameTest()
            ->addCondition('position() = 1');
    }

    /**
     * @param XPathExpr $xpath
     *
     * @return XPathExpr
     */
    public function translateLastChild(XPathExpr $xpath)
    {
        return $xpath
            ->addStarPrefix()
            ->addNameTest()
            ->addCondition('position() = last()');
    }

    /**
     * @param XPathExpr $xpath
     *
     * @return XPathExpr
     *
     * @throws ExpressionErrorException
     */
    public function translateFirstOfType(XPathExpr $xpath)
    {
        if ('*' === $xpath->getElement()) {
            throw new ExpressionErrorException('"*:first-of-type" is not implemented.');
        }

        return $xpath
            ->addStarPrefix()
            ->addCondition('position() = 1');
    }

    /**
     * @param XPathExpr $xpath
     *
     * @return XPathExpr
     *
     * @throws ExpressionErrorException
     */
    public function translateLastOfType(XPathExpr $xpath)
    {
        if ('*' === $xpath->getElement()) {
            throw new ExpressionErrorException('"*:last-of-type" is not implemented.');
        }

        return $xpath
            ->addStarPrefix()
            ->addCondition('position() = last()');
    }

    /**
     * @param XPathExpr $xpath
     *
     * @return XPathExpr
     */
    public function translateOnlyChild(XPathExpr $xpath)
    {
        return $xpath
            ->addStarPrefix()
            ->addNameTest()
            ->addCondition('last() = 1');
    }

    /**
     * @param XPathExpr $xpath
     *
     * @return XPathExpr
     *
     * @throws ExpressionErrorException
     */
    public function translateOnlyOfType(XPathExpr $xpath)
    {
        if ('*' === $xpath->getElement()) {
            throw new ExpressionErrorException('"*:only-of-type" is not implemented.');
        }

        return $xpath->addCondition('last() = 1');
    }

    /**
     * @param XPathExpr $xpath
     *
     * @return XPathExpr
     */
    public function translateEmpty(XPathExpr $xpath)
    {
        return $xpath->addCondition('not(*) and not(string-length())');
    }

    /**
     * {@inheritdoc}
     */
    public function getName()
    {
        return 'pseudo-class';
    }
}
PK     {+]$p��B  B    Extension/HtmlExtension.phpnu �[���        <?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * 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\Exception\ExpressionErrorException;
use Symfony\Component\CssSelector\Node\FunctionNode;
use Symfony\Component\CssSelector\XPath\Translator;
use Symfony\Component\CssSelector\XPath\XPathExpr;

/**
 * XPath expression translator HTML extension.
 *
 * This component is a port of the Python cssselector library,
 * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
 *
 * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
 */
class HtmlExtension extends AbstractExtension
{
    /**
     * Constructor.
     *
     * @param Translator $translator
     */
    public function __construct(Translator $translator)
    {
        $translator
            ->getExtension('node')
            ->setFlag(NodeExtension::ELEMENT_NAME_IN_LOWER_CASE, true)
            ->setFlag(NodeExtension::ATTRIBUTE_NAME_IN_LOWER_CASE, true);
    }

    /**
     * {@inheritdoc}
     */
    public function getPseudoClassTranslators()
    {
        return array(
            'checked'  => array($this, 'translateChecked'),
            'link'     => array($this, 'translateLink'),
            'disabled' => array($this, 'translateDisabled'),
            'enabled'  => array($this, 'translateEnabled'),
            'selected' => array($this, 'translateSelected'),
            'invalid'  => array($this, 'translateInvalid'),
            'hover'    => array($this, 'translateHover'),
            'visited'  => array($this, 'translateVisited'),
        );
    }

    /**
     * {@inheritdoc}
     */
    public function getFunctionTranslators()
    {
        return array(
            'lang' => array($this, 'translateLang'),
        );
    }

    /**
     * @param XPathExpr $xpath
     *
     * @return XPathExpr
     */
    public function translateChecked(XPathExpr $xpath)
    {
        return $xpath->addCondition(
            '(@checked '
            ."and (name(.) = 'input' or name(.) = 'command')"
            ."and (@type = 'checkbox' or @type = 'radio'))"
        );
    }

    /**
     * @param XPathExpr $xpath
     *
     * @return XPathExpr
     */
    public function translateLink(XPathExpr $xpath)
    {
        return $xpath->addCondition("@href and (name(.) = 'a' or name(.) = 'link' or name(.) = 'area')");
    }

    /**
     * @param XPathExpr $xpath
     *
     * @return XPathExpr
     */
    public function translateDisabled(XPathExpr $xpath)
    {
        return $xpath->addCondition(
            "("
                ."@disabled and"
                ."("
                    ."(name(.) = 'input' and @type != 'hidden')"
                    ." or name(.) = 'button'"
                    ." or name(.) = 'select'"
                    ." or name(.) = 'textarea'"
                    ." or name(.) = 'command'"
                    ." or name(.) = 'fieldset'"
                    ." or name(.) = 'optgroup'"
                    ." or name(.) = 'option'"
                .")"
            .") or ("
                ."(name(.) = 'input' and @type != 'hidden')"
                ." or name(.) = 'button'"
                ." or name(.) = 'select'"
                ." or name(.) = 'textarea'"
            .")"
            ." and ancestor::fieldset[@disabled]"
        );
        // todo: in the second half, add "and is not a descendant of that fieldset element's first legend element child, if any."
    }

    /**
     * @param XPathExpr $xpath
     *
     * @return XPathExpr
     */
    public function translateEnabled(XPathExpr $xpath)
    {
        return $xpath->addCondition(
            '('
                .'@href and ('
                    ."name(.) = 'a'"
                    ." or name(.) = 'link'"
                    ." or name(.) = 'area'"
                .')'
            .') or ('
                .'('
                    ."name(.) = 'command'"
                    ." or name(.) = 'fieldset'"
                    ." or name(.) = 'optgroup'"
                .')'
                .' and not(@disabled)'
            .') or ('
                .'('
                    ."(name(.) = 'input' and @type != 'hidden')"
                    ." or name(.) = 'button'"
                    ." or name(.) = 'select'"
                    ." or name(.) = 'textarea'"
                    ." or name(.) = 'keygen'"
                .')'
                ." and not (@disabled or ancestor::fieldset[@disabled])"
            .') or ('
                ."name(.) = 'option' and not("
                    ."@disabled or ancestor::optgroup[@disabled]"
                .')'
            .')'
        );
    }

    /**
     * @param XPathExpr    $xpath
     * @param FunctionNode $function
     *
     * @return XPathExpr
     *
     * @throws ExpressionErrorException
     */
    public function translateLang(XPathExpr $xpath, FunctionNode $function)
    {
        $arguments = $function->getArguments();
        foreach ($arguments as $token) {
            if (!($token->isString() || $token->isIdentifier())) {
                throw new ExpressionErrorException(
                    'Expected a single string or identifier for :lang(), got '
                    .implode(', ', $arguments)
                );
            }
        }

        return $xpath->addCondition(sprintf(
            'ancestor-or-self::*[@lang][1][starts-with(concat('
            ."translate(@%s, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz'), '-')"
            .', %s)]',
            'lang',
            Translator::getXpathLiteral(strtolower($arguments[0]->getValue()).'-')
        ));
    }

    /**
     * @param XPathExpr $xpath
     *
     * @return XPathExpr
     */
    public function translateSelected(XPathExpr $xpath)
    {
        return $xpath->addCondition("(@selected and name(.) = 'option')");
    }

    /**
     * @param XPathExpr $xpath
     *
     * @return XPathExpr
     */
    public function translateInvalid(XPathExpr $xpath)
    {
        return $xpath->addCondition('0');
    }

    /**
     * @param XPathExpr $xpath
     *
     * @return XPathExpr
     */
    public function translateHover(XPathExpr $xpath)
    {
        return $xpath->addCondition('0');
    }

    /**
     * @param XPathExpr $xpath
     *
     * @return XPathExpr
     */
    public function translateVisited(XPathExpr $xpath)
    {
        return $xpath->addCondition('0');
    }

    /**
     * {@inheritdoc}
     */
    public function getName()
    {
        return 'html';
    }
}
PK     {+]c�-�  �    Extension/AbstractExtension.phpnu �[���        <?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * 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;

/**
 * XPath expression translator abstract extension.
 *
 * This component is a port of the Python cssselector library,
 * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
 *
 * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
 */
abstract class AbstractExtension implements ExtensionInterface
{
    /**
     * {@inheritdoc}
     */
    public function getNodeTranslators()
    {
        return array();
    }

    /**
     * {@inheritdoc}
     */
    public function getCombinationTranslators()
    {
        return array();
    }

    /**
     * {@inheritdoc}
     */
    public function getFunctionTranslators()
    {
        return array();
    }

    /**
     * {@inheritdoc}
     */
    public function getPseudoClassTranslators()
    {
        return array();
    }

    /**
     * {@inheritdoc}
     */
    public function getAttributeMatchingTranslators()
    {
        return array();
    }
}
PK     {+]�܍�  �  (  Extension/AttributeMatchingExtension.phpnu �[���        <?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * 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 cssselector library,
 * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
 *
 * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
 */
class AttributeMatchingExtension extends AbstractExtension
{
    /**
     * {@inheritdoc}
     */
    public function getAttributeMatchingTranslators()
    {
        return array(
            'exists' => array($this, 'translateExists'),
            '='      => array($this, 'translateEquals'),
            '~='     => array($this, 'translateIncludes'),
            '|='     => array($this, 'translateDashMatch'),
            '^='     => array($this, 'translatePrefixMatch'),
            '$='     => array($this, 'translateSuffixMatch'),
            '*='     => array($this, 'translateSubstringMatch'),
            '!='     => array($this, 'translateDifferent'),
        );
    }

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

    /**
     * @param XPathExpr $xpath
     * @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 XPathExpr $xpath
     * @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 XPathExpr $xpath
     * @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 XPathExpr $xpath
     * @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 XPathExpr $xpath
     * @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 XPathExpr $xpath
     * @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 XPathExpr $xpath
     * @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';
    }
}
PK     {+]��u�  �    Extension/FunctionExtension.phpnu �[���        <?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * 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\Exception\ExpressionErrorException;
use Symfony\Component\CssSelector\Exception\SyntaxErrorException;
use Symfony\Component\CssSelector\Node\FunctionNode;
use Symfony\Component\CssSelector\Parser\Parser;
use Symfony\Component\CssSelector\XPath\Translator;
use Symfony\Component\CssSelector\XPath\XPathExpr;

/**
 * XPath expression translator function extension.
 *
 * This component is a port of the Python cssselector library,
 * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
 *
 * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
 */
class FunctionExtension extends AbstractExtension
{
    /**
     * {@inheritdoc}
     */
    public function getFunctionTranslators()
    {
        return array(
            'nth-child'        => array($this, 'translateNthChild'),
            'nth-last-child'   => array($this, 'translateNthLastChild'),
            'nth-of-type'      => array($this, 'translateNthOfType'),
            'nth-last-of-type' => array($this, 'translateNthLastOfType'),
            'contains'         => array($this, 'translateContains'),
            'lang'             => array($this, 'translateLang'),
        );
    }

    /**
     * @param XPathExpr    $xpath
     * @param FunctionNode $function
     * @param boolean      $last
     * @param boolean      $addNameTest
     *
     * @return XPathExpr
     *
     * @throws ExpressionErrorException
     */
    public function translateNthChild(XPathExpr $xpath, FunctionNode $function, $last = false, $addNameTest = true)
    {
        try {
            list($a, $b) = Parser::parseSeries($function->getArguments());
        } catch (SyntaxErrorException $e) {
            throw new ExpressionErrorException(sprintf('Invalid series: %s', implode(', ', $function->getArguments())), 0, $e);
        }

        $xpath->addStarPrefix();
        if ($addNameTest) {
            $xpath->addNameTest();
        }

        if (0 === $a) {
            return $xpath->addCondition('position() = '.($last ? 'last() - '.($b - 1) : $b));
        }

        if ($a < 0) {
            if ($b < 1) {
                return $xpath->addCondition('false()');
            }

            $sign = '<=';
        } else {
            $sign = '>=';
        }

        $expr = 'position()';

        if ($last) {
            $expr = 'last() - '.$expr;
            $b--;
        }

        if (0 !== $b) {
            $expr .= ' - '.$b;
        }

        $conditions = array(sprintf('%s %s 0', $expr, $sign));

        if (1 !== $a && -1 !== $a) {
            $conditions[] = sprintf('(%s) mod %d = 0', $expr, $a);
        }

        return $xpath->addCondition(implode(' and ', $conditions));

        // todo: handle an+b, odd, even
        // an+b means every-a, plus b, e.g., 2n+1 means odd
        // 0n+b means b
        // n+0 means a=1, i.e., all elements
        // an means every a elements, i.e., 2n means even
        // -n means -1n
        // -1n+6 means elements 6 and previous
    }

    /**
     * @param XPathExpr    $xpath
     * @param FunctionNode $function
     *
     * @return XPathExpr
     */
    public function translateNthLastChild(XPathExpr $xpath, FunctionNode $function)
    {
        return $this->translateNthChild($xpath, $function, true);
    }

    /**
     * @param XPathExpr    $xpath
     * @param FunctionNode $function
     *
     * @return XPathExpr
     */
    public function translateNthOfType(XPathExpr $xpath, FunctionNode $function)
    {
        return $this->translateNthChild($xpath, $function, false, false);
    }

    /**
     * @param XPathExpr    $xpath
     * @param FunctionNode $function
     *
     * @return XPathExpr
     *
     * @throws ExpressionErrorException
     */
    public function translateNthLastOfType(XPathExpr $xpath, FunctionNode $function)
    {
        if ('*' === $xpath->getElement()) {
            throw new ExpressionErrorException('"*:nth-of-type()" is not implemented.');
        }

        return $this->translateNthChild($xpath, $function, true, false);
    }

    /**
     * @param XPathExpr    $xpath
     * @param FunctionNode $function
     *
     * @return XPathExpr
     *
     * @throws ExpressionErrorException
     */
    public function translateContains(XPathExpr $xpath, FunctionNode $function)
    {
        $arguments = $function->getArguments();
        foreach ($arguments as $token) {
            if (!($token->isString() || $token->isIdentifier())) {
                throw new ExpressionErrorException(
                    'Expected a single string or identifier for :contains(), got '
                    .implode(', ', $arguments)
                );
            }
        }

        return $xpath->addCondition(sprintf(
            'contains(string(.), %s)',
            Translator::getXpathLiteral($arguments[0]->getValue())
        ));
    }

    /**
     * @param XPathExpr    $xpath
     * @param FunctionNode $function
     *
     * @return XPathExpr
     *
     * @throws ExpressionErrorException
     */
    public function translateLang(XPathExpr $xpath, FunctionNode $function)
    {
        $arguments = $function->getArguments();
        foreach ($arguments as $token) {
            if (!($token->isString() || $token->isIdentifier())) {
                throw new ExpressionErrorException(
                    'Expected a single string or identifier for :lang(), got '
                    .implode(', ', $arguments)
                );
            }
        }

        return $xpath->addCondition(sprintf(
            'lang(%s)',
            Translator::getXpathLiteral($arguments[0]->getValue())
        ));
    }

    /**
     * {@inheritdoc}
     */
    public function getName()
    {
        return 'function';
    }
}
PK     {+]���|  |     Extension/ExtensionInterface.phpnu �[���        <?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * 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;

/**
 * XPath expression translator extension interface.
 *
 * This component is a port of the Python cssselector library,
 * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
 *
 * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
 */
interface ExtensionInterface
{
    /**
     * Returns node translators.
     *
     * @return callable[]
     */
    public function getNodeTranslators();

    /**
     * Returns combination translators.
     *
     * @return callable[]
     */
    public function getCombinationTranslators();

    /**
     * Returns function translators.
     *
     * @return callable[]
     */
    public function getFunctionTranslators();

    /**
     * Returns pseudo-class translators.
     *
     * @return callable[]
     */
    public function getPseudoClassTranslators();

    /**
     * Returns attribute operation translators.
     *
     * @return callable[]
     */
    public function getAttributeMatchingTranslators();

    /**
     * Returns extension name.
     *
     * @return string
     */
    public function getName();
}
PK     {+]��x=	  =	  "  Extension/CombinationExtension.phpnu �[���        <?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * 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\XPathExpr;

/**
 * XPath expression translator combination extension.
 *
 * This component is a port of the Python cssselector library,
 * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
 *
 * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
 */
class CombinationExtension extends AbstractExtension
{
    /**
     * {@inheritdoc}
     */
    public function getCombinationTranslators()
    {
        return array(
            ' ' => array($this, 'translateDescendant'),
            '>' => array($this, 'translateChild'),
            '+' => array($this, 'translateDirectAdjacent'),
            '~' => array($this, 'translateIndirectAdjacent'),
        );
    }

    /**
     * @param XPathExpr $xpath
     * @param XPathExpr $combinedXpath
     *
     * @return XPathExpr
     */
    public function translateDescendant(XPathExpr $xpath, XPathExpr $combinedXpath)
    {
        return $xpath->join('/descendant-or-self::*/', $combinedXpath);
    }

    /**
     * @param XPathExpr $xpath
     * @param XPathExpr $combinedXpath
     *
     * @return XPathExpr
     */
    public function translateChild(XPathExpr $xpath, XPathExpr $combinedXpath)
    {
        return $xpath->join('/', $combinedXpath);
    }

    /**
     * @param XPathExpr $xpath
     * @param XPathExpr $combinedXpath
     *
     * @return XPathExpr
     */
    public function translateDirectAdjacent(XPathExpr $xpath, XPathExpr $combinedXpath)
    {
        return $xpath
            ->join('/following-sibling::', $combinedXpath)
            ->addNameTest()
            ->addCondition('position() = 1');
    }

    /**
     * @param XPathExpr $xpath
     * @param XPathExpr $combinedXpath
     *
     * @return XPathExpr
     */
    public function translateIndirectAdjacent(XPathExpr $xpath, XPathExpr $combinedXpath)
    {
        return $xpath->join('/following-sibling::', $combinedXpath);
    }

    /**
     * {@inheritdoc}
     */
    public function getName()
    {
        return 'combination';
    }
}
PK     {+]��r7  7    XPathExpr.phpnu �[���        <?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\CssSelector\XPath;

/**
 * XPath expression translator interface.
 *
 * This component is a port of the Python cssselector library,
 * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
 *
 * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
 */
class XPathExpr
{
    /**
     * @var string
     */
    private $path;

    /**
     * @var string
     */
    private $element;

    /**
     * @var string
     */
    private $condition;

    /**
     * @param string  $path
     * @param string  $element
     * @param string  $condition
     * @param boolean $starPrefix
     */
    public function __construct($path = '', $element = '*', $condition = '', $starPrefix = false)
    {
        $this->path = $path;
        $this->element = $element;
        $this->condition = $condition;

        if ($starPrefix) {
            $this->addStarPrefix();
        }
    }

    /**
     * @return string
     */
    public function getElement()
    {
        return $this->element;
    }

    /**
     * @param $condition
     *
     * @return XPathExpr
     */
    public function addCondition($condition)
    {
        $this->condition = $this->condition ? sprintf('%s and (%s)', $this->condition, $condition) : $condition;

        return $this;
    }

    /**
     * @return string
     */
    public function getCondition()
    {
        return $this->condition;
    }

    /**
     * @return XPathExpr
     */
    public function addNameTest()
    {
        if ('*' !== $this->element) {
            $this->addCondition('name() = '.Translator::getXpathLiteral($this->element));
            $this->element = '*';
        }

        return $this;
    }

    /**
     * @return XPathExpr
     */
    public function addStarPrefix()
    {
        $this->path .= '*/';

        return $this;
    }

    /**
     * Joins another XPathExpr with a combiner.
     *
     * @param string    $combiner
     * @param XPathExpr $expr
     *
     * @return XPathExpr
     */
    public function join($combiner, XPathExpr $expr)
    {
        $path = $this->__toString().$combiner;

        if ('*/' !== $expr->path) {
            $path .= $expr->path;
        }

        $this->path = $path;
        $this->element = $expr->element;
        $this->condition = $expr->condition;

        return $this;
    }

    /**
     * @return string
     */
    public function __toString()
    {
        $path = $this->path.$this->element;
        $condition = null === $this->condition || '' === $this->condition ? '' : '['.$this->condition.']';

        return $path.$condition;
    }
}
PK     {+]�����!  �!    Translator.phpnu �[���        <?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\CssSelector\XPath;

use Symfony\Component\CssSelector\Exception\ExpressionErrorException;
use Symfony\Component\CssSelector\Node\FunctionNode;
use Symfony\Component\CssSelector\Node\NodeInterface;
use Symfony\Component\CssSelector\Node\SelectorNode;
use Symfony\Component\CssSelector\Parser\Parser;
use Symfony\Component\CssSelector\Parser\ParserInterface;

/**
 * XPath expression translator interface.
 *
 * This component is a port of the Python cssselector library,
 * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
 *
 * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
 */
class Translator implements TranslatorInterface
{
    /**
     * @var ParserInterface
     */
    private $mainParser;

    /**
     * @var ParserInterface[]
     */
    private $shortcutParsers = array();

    /**
     * @var Extension\ExtensionInterface
     */
    private $extensions = array();

    /**
     * @var array
     */
    private $nodeTranslators = array();

    /**
     * @var array
     */
    private $combinationTranslators = array();

    /**
     * @var array
     */
    private $functionTranslators = array();

    /**
     * @var array
     */
    private $pseudoClassTranslators = array();

    /**
     * @var array
     */
    private $attributeMatchingTranslators = array();

    /**
     * Constructor.
     */
    public function __construct(ParserInterface $parser = null)
    {
        $this->mainParser = $parser ?: new Parser();

        $this
            ->registerExtension(new Extension\NodeExtension($this))
            ->registerExtension(new Extension\CombinationExtension())
            ->registerExtension(new Extension\FunctionExtension())
            ->registerExtension(new Extension\PseudoClassExtension())
            ->registerExtension(new Extension\AttributeMatchingExtension())
        ;
    }

    /**
     * @param string $element
     *
     * @return string
     */
    public static function getXpathLiteral($element)
    {
        if (false === strpos($element, "'")) {
            return "'".$element."'";
        }

        if (false === strpos($element, '"')) {
            return '"'.$element.'"';
        }

        $string = $element;
        $parts = array();
        while (true) {
            if (false !== $pos = strpos($string, "'")) {
                $parts[] = sprintf("'%s'", substr($string, 0, $pos));
                $parts[] = "\"'\"";
                $string = substr($string, $pos + 1);
            } else {
                $parts[] = "'$string'";
                break;
            }
        }

        return sprintf('concat(%s)', implode($parts, ', '));
    }

    /**
     * {@inheritdoc}
     */
    public function cssToXPath($cssExpr, $prefix = 'descendant-or-self::')
    {
        $selectors = $this->parseSelectors($cssExpr);

        /** @var SelectorNode $selector */
        foreach ($selectors as $selector) {
            if (null !== $selector->getPseudoElement()) {
                throw new ExpressionErrorException('Pseudo-elements are not supported.');
            }
        }

        $translator = $this;

        return implode(' | ', array_map(function (SelectorNode $selector) use ($translator, $prefix) {
            return $translator->selectorToXPath($selector, $prefix);
        }, $selectors));
    }

    /**
     * {@inheritdoc}
     */
    public function selectorToXPath(SelectorNode $selector, $prefix = 'descendant-or-self::')
    {
        return ($prefix ?: '').$this->nodeToXPath($selector);
    }

    /**
     * Registers an extension.
     *
     * @param Extension\ExtensionInterface $extension
     *
     * @return Translator
     */
    public function registerExtension(Extension\ExtensionInterface $extension)
    {
        $this->extensions[$extension->getName()] = $extension;

        $this->nodeTranslators = array_merge($this->nodeTranslators, $extension->getNodeTranslators());
        $this->combinationTranslators = array_merge($this->combinationTranslators, $extension->getCombinationTranslators());
        $this->functionTranslators = array_merge($this->functionTranslators, $extension->getFunctionTranslators());
        $this->pseudoClassTranslators = array_merge($this->pseudoClassTranslators, $extension->getPseudoClassTranslators());
        $this->attributeMatchingTranslators = array_merge($this->attributeMatchingTranslators, $extension->getAttributeMatchingTranslators());

        return $this;
    }

    /**
     * @param string $name
     *
     * @return Extension\ExtensionInterface
     *
     * @throws ExpressionErrorException
     */
    public function getExtension($name)
    {
        if (!isset($this->extensions[$name])) {
            throw new ExpressionErrorException(sprintf('Extension "%s" not registered.', $name));
        }

        return $this->extensions[$name];
    }

    /**
     * Registers a shortcut parser.
     *
     * @param ParserInterface $shortcut
     *
     * @return Translator
     */
    public function registerParserShortcut(ParserInterface $shortcut)
    {
        $this->shortcutParsers[] = $shortcut;

        return $this;
    }

    /**
     * @param NodeInterface $node
     *
     * @return XPathExpr
     *
     * @throws ExpressionErrorException
     */
    public function nodeToXPath(NodeInterface $node)
    {
        if (!isset($this->nodeTranslators[$node->getNodeName()])) {
            throw new ExpressionErrorException(sprintf('Node "%s" not supported.', $node->getNodeName()));
        }

        return call_user_func($this->nodeTranslators[$node->getNodeName()], $node);
    }

    /**
     * @param string        $combiner
     * @param NodeInterface $xpath
     * @param NodeInterface $combinedXpath
     *
     * @return XPathExpr
     *
     * @throws ExpressionErrorException
     */
    public function addCombination($combiner, NodeInterface $xpath, NodeInterface $combinedXpath)
    {
        if (!isset($this->combinationTranslators[$combiner])) {
            throw new ExpressionErrorException(sprintf('Combiner "%s" not supported.', $combiner));
        }

        return call_user_func($this->combinationTranslators[$combiner], $this->nodeToXPath($xpath), $this->nodeToXPath($combinedXpath));
    }

    /**
     * @param XPathExpr $xpath
     * @param FunctionNode $function
     *
     * @return XPathExpr
     *
     * @throws ExpressionErrorException
     */
    public function addFunction(XPathExpr $xpath, FunctionNode $function)
    {
        if (!isset($this->functionTranslators[$function->getName()])) {
            throw new ExpressionErrorException(sprintf('Function "%s" not supported.', $function->getName()));
        }

        return call_user_func($this->functionTranslators[$function->getName()], $xpath, $function);
    }

    /**
     * @param XPathExpr $xpath
     * @param string    $pseudoClass
     *
     * @return XPathExpr
     *
     * @throws ExpressionErrorException
     */
    public function addPseudoClass(XPathExpr $xpath, $pseudoClass)
    {
        if (!isset($this->pseudoClassTranslators[$pseudoClass])) {
            throw new ExpressionErrorException(sprintf('Pseudo-class "%s" not supported.', $pseudoClass));
        }

        return call_user_func($this->pseudoClassTranslators[$pseudoClass], $xpath);
    }

    /**
     * @param XPathExpr $xpath
     * @param string    $operator
     * @param string    $attribute
     * @param string    $value
     *
     * @throws ExpressionErrorException
     *
     * @return XPathExpr
     */
    public function addAttributeMatching(XPathExpr $xpath, $operator, $attribute, $value)
    {
        if (!isset($this->attributeMatchingTranslators[$operator])) {
            throw new ExpressionErrorException(sprintf('Attribute matcher operator "%s" not supported.', $operator));
        }

        return call_user_func($this->attributeMatchingTranslators[$operator], $xpath, $attribute, $value);
    }

    /**
     * @param string $css
     *
     * @return SelectorNode[]
     */
    private function parseSelectors($css)
    {
        foreach ($this->shortcutParsers as $shortcut) {
            $tokens = $shortcut->parse($css);

            if (!empty($tokens)) {
                return $tokens;
            }
        }

        return $this->mainParser->parse($css);
    }
}
PK     {+]��  �    TranslatorInterface.phpnu �[���        <?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\CssSelector\XPath;

use Symfony\Component\CssSelector\Node\SelectorNode;

/**
 * XPath expression translator interface.
 *
 * This component is a port of the Python cssselector library,
 * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
 *
 * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
 */
interface TranslatorInterface
{
    /**
     * Translates a CSS selector to an XPath expression.
     *
     * @param string $cssExpr
     * @param string $prefix
     *
     * @return XPathExpr
     */
    public function cssToXPath($cssExpr, $prefix = 'descendant-or-self::');

    /**
     * Translates a parsed selector node to an XPath expression
     *
     * @param SelectorNode $selector
     * @param string       $prefix
     *
     * @return XPathExpr
     */
    public function selectorToXPath(SelectorNode $selector, $prefix = 'descendant-or-self::');
}
PK       {+]�Ѽ`P  P                  Extension/NodeExtension.phpnu �[���        PK       {+] ���  �  "            �  Extension/PseudoClassExtension.phpnu �[���        PK       {+]$p��B  B              �+  Extension/HtmlExtension.phpnu �[���        PK       {+]c�-�  �              HF  Extension/AbstractExtension.phpnu �[���        PK       {+]�܍�  �  (            tK  Extension/AttributeMatchingExtension.phpnu �[���        PK       {+]��u�  �              �^  Extension/FunctionExtension.phpnu �[���        PK       {+]���|  |               �v  Extension/ExtensionInterface.phpnu �[���        PK       {+]��x=	  =	  "            j|  Extension/CombinationExtension.phpnu �[���        PK       {+]��r7  7              ��  XPathExpr.phpnu �[���        PK       {+]�����!  �!              m�  Translator.phpnu �[���        PK       {+]��  �              2�  TranslatorInterface.phpnu �[���        PK      �  �    