Handler/CommentHandler.php000064400000002162151546446540011551 0ustar00<?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\Parser\Handler;

use Symfony\Component\CssSelector\Parser\Reader;
use Symfony\Component\CssSelector\Parser\TokenStream;

/**
 * CSS selector comment handler.
 *
 * 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 <jeanfrancois.simon@sensiolabs.com>
 *
 * @internal
 */
class CommentHandler implements HandlerInterface
{
    /**
     * {@inheritdoc}
     */
    public function handle(Reader $reader, TokenStream $stream): bool
    {
        if ('/*' !== $reader->getSubstring(2)) {
            return false;
        }

        $offset = $reader->getOffset('*/');

        if (false === $offset) {
            $reader->moveToEnd();
        } else {
            $reader->moveForward($offset + 2);
        }

        return true;
    }
}
Handler/HandlerInterface.php000064400000001410151546446540012042 0ustar00<?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\Parser\Handler;

use Symfony\Component\CssSelector\Parser\Reader;
use Symfony\Component\CssSelector\Parser\TokenStream;

/**
 * CSS selector handler interface.
 *
 * 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 <jeanfrancois.simon@sensiolabs.com>
 *
 * @internal
 */
interface HandlerInterface
{
    public function handle(Reader $reader, TokenStream $stream): bool;
}
Handler/HashHandler.php000064400000003104151546446540011027 0ustar00<?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\Parser\Handler;

use Symfony\Component\CssSelector\Parser\Reader;
use Symfony\Component\CssSelector\Parser\Token;
use Symfony\Component\CssSelector\Parser\Tokenizer\TokenizerEscaping;
use Symfony\Component\CssSelector\Parser\Tokenizer\TokenizerPatterns;
use Symfony\Component\CssSelector\Parser\TokenStream;

/**
 * CSS selector comment handler.
 *
 * 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 <jeanfrancois.simon@sensiolabs.com>
 *
 * @internal
 */
class HashHandler implements HandlerInterface
{
    private $patterns;
    private $escaping;

    public function __construct(TokenizerPatterns $patterns, TokenizerEscaping $escaping)
    {
        $this->patterns = $patterns;
        $this->escaping = $escaping;
    }

    /**
     * {@inheritdoc}
     */
    public function handle(Reader $reader, TokenStream $stream): bool
    {
        $match = $reader->findPattern($this->patterns->getHashPattern());

        if (!$match) {
            return false;
        }

        $value = $this->escaping->escapeUnicode($match[1]);
        $stream->push(new Token(Token::TYPE_HASH, $value, $reader->getPosition()));
        $reader->moveForward(\strlen($match[0]));

        return true;
    }
}
Handler/IdentifierHandler.php000064400000003126151546446540012232 0ustar00<?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\Parser\Handler;

use Symfony\Component\CssSelector\Parser\Reader;
use Symfony\Component\CssSelector\Parser\Token;
use Symfony\Component\CssSelector\Parser\Tokenizer\TokenizerEscaping;
use Symfony\Component\CssSelector\Parser\Tokenizer\TokenizerPatterns;
use Symfony\Component\CssSelector\Parser\TokenStream;

/**
 * CSS selector comment handler.
 *
 * 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 <jeanfrancois.simon@sensiolabs.com>
 *
 * @internal
 */
class IdentifierHandler implements HandlerInterface
{
    private $patterns;
    private $escaping;

    public function __construct(TokenizerPatterns $patterns, TokenizerEscaping $escaping)
    {
        $this->patterns = $patterns;
        $this->escaping = $escaping;
    }

    /**
     * {@inheritdoc}
     */
    public function handle(Reader $reader, TokenStream $stream): bool
    {
        $match = $reader->findPattern($this->patterns->getIdentifierPattern());

        if (!$match) {
            return false;
        }

        $value = $this->escaping->escapeUnicode($match[0]);
        $stream->push(new Token(Token::TYPE_IDENTIFIER, $value, $reader->getPosition()));
        $reader->moveForward(\strlen($match[0]));

        return true;
    }
}
Handler/NumberHandler.php000064400000002562151546446540011403 0ustar00<?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\Parser\Handler;

use Symfony\Component\CssSelector\Parser\Reader;
use Symfony\Component\CssSelector\Parser\Token;
use Symfony\Component\CssSelector\Parser\Tokenizer\TokenizerPatterns;
use Symfony\Component\CssSelector\Parser\TokenStream;

/**
 * CSS selector comment handler.
 *
 * 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 <jeanfrancois.simon@sensiolabs.com>
 *
 * @internal
 */
class NumberHandler implements HandlerInterface
{
    private $patterns;

    public function __construct(TokenizerPatterns $patterns)
    {
        $this->patterns = $patterns;
    }

    /**
     * {@inheritdoc}
     */
    public function handle(Reader $reader, TokenStream $stream): bool
    {
        $match = $reader->findPattern($this->patterns->getNumberPattern());

        if (!$match) {
            return false;
        }

        $stream->push(new Token(Token::TYPE_NUMBER, $match[0], $reader->getPosition()));
        $reader->moveForward(\strlen($match[0]));

        return true;
    }
}
Handler/StringHandler.php000064400000004607151546446540011423 0ustar00<?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\Parser\Handler;

use Symfony\Component\CssSelector\Exception\InternalErrorException;
use Symfony\Component\CssSelector\Exception\SyntaxErrorException;
use Symfony\Component\CssSelector\Parser\Reader;
use Symfony\Component\CssSelector\Parser\Token;
use Symfony\Component\CssSelector\Parser\Tokenizer\TokenizerEscaping;
use Symfony\Component\CssSelector\Parser\Tokenizer\TokenizerPatterns;
use Symfony\Component\CssSelector\Parser\TokenStream;

/**
 * CSS selector comment handler.
 *
 * 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 <jeanfrancois.simon@sensiolabs.com>
 *
 * @internal
 */
class StringHandler implements HandlerInterface
{
    private $patterns;
    private $escaping;

    public function __construct(TokenizerPatterns $patterns, TokenizerEscaping $escaping)
    {
        $this->patterns = $patterns;
        $this->escaping = $escaping;
    }

    /**
     * {@inheritdoc}
     */
    public function handle(Reader $reader, TokenStream $stream): bool
    {
        $quote = $reader->getSubstring(1);

        if (!\in_array($quote, ["'", '"'])) {
            return false;
        }

        $reader->moveForward(1);
        $match = $reader->findPattern($this->patterns->getQuotedStringPattern($quote));

        if (!$match) {
            throw new InternalErrorException(sprintf('Should have found at least an empty match at %d.', $reader->getPosition()));
        }

        // check unclosed strings
        if (\strlen($match[0]) === $reader->getRemainingLength()) {
            throw SyntaxErrorException::unclosedString($reader->getPosition() - 1);
        }

        // check quotes pairs validity
        if ($quote !== $reader->getSubstring(1, \strlen($match[0]))) {
            throw SyntaxErrorException::unclosedString($reader->getPosition() - 1);
        }

        $string = $this->escaping->escapeUnicodeAndNewLine($match[0]);
        $stream->push(new Token(Token::TYPE_STRING, $string, $reader->getPosition()));
        $reader->moveForward(\strlen($match[0]) + 1);

        return true;
    }
}
Handler/WhitespaceHandler.php000064400000002247151546446540012247 0ustar00<?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\Parser\Handler;

use Symfony\Component\CssSelector\Parser\Reader;
use Symfony\Component\CssSelector\Parser\Token;
use Symfony\Component\CssSelector\Parser\TokenStream;

/**
 * CSS selector whitespace handler.
 *
 * 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 <jeanfrancois.simon@sensiolabs.com>
 *
 * @internal
 */
class WhitespaceHandler implements HandlerInterface
{
    /**
     * {@inheritdoc}
     */
    public function handle(Reader $reader, TokenStream $stream): bool
    {
        $match = $reader->findPattern('~^[ \t\r\n\f]+~');

        if (false === $match) {
            return false;
        }

        $stream->push(new Token(Token::TYPE_WHITESPACE, $match[0], $reader->getPosition()));
        $reader->moveForward(\strlen($match[0]));

        return true;
    }
}
Parser.php000064400000026542151546446540006540 0ustar00<?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\Parser;

use Symfony\Component\CssSelector\Exception\SyntaxErrorException;
use Symfony\Component\CssSelector\Node;
use Symfony\Component\CssSelector\Parser\Tokenizer\Tokenizer;

/**
 * CSS selector parser.
 *
 * 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 <jeanfrancois.simon@sensiolabs.com>
 *
 * @internal
 */
class Parser implements ParserInterface
{
    private $tokenizer;

    public function __construct(Tokenizer $tokenizer = null)
    {
        $this->tokenizer = $tokenizer ?? new Tokenizer();
    }

    /**
     * {@inheritdoc}
     */
    public function parse(string $source): array
    {
        $reader = new Reader($source);
        $stream = $this->tokenizer->tokenize($reader);

        return $this->parseSelectorList($stream);
    }

    /**
     * Parses the arguments for ":nth-child()" and friends.
     *
     * @param Token[] $tokens
     *
     * @throws SyntaxErrorException
     */
    public static function parseSeries(array $tokens): array
    {
        foreach ($tokens as $token) {
            if ($token->isString()) {
                throw SyntaxErrorException::stringAsFunctionArgument();
            }
        }

        $joined = trim(implode('', array_map(function (Token $token) {
            return $token->getValue();
        }, $tokens)));

        $int = function ($string) {
            if (!is_numeric($string)) {
                throw SyntaxErrorException::stringAsFunctionArgument();
            }

            return (int) $string;
        };

        switch (true) {
            case 'odd' === $joined:
                return [2, 1];
            case 'even' === $joined:
                return [2, 0];
            case 'n' === $joined:
                return [1, 0];
            case !str_contains($joined, 'n'):
                return [0, $int($joined)];
        }

        $split = explode('n', $joined);
        $first = $split[0] ?? null;

        return [
            $first ? ('-' === $first || '+' === $first ? $int($first.'1') : $int($first)) : 1,
            isset($split[1]) && $split[1] ? $int($split[1]) : 0,
        ];
    }

    private function parseSelectorList(TokenStream $stream): array
    {
        $stream->skipWhitespace();
        $selectors = [];

        while (true) {
            $selectors[] = $this->parserSelectorNode($stream);

            if ($stream->getPeek()->isDelimiter([','])) {
                $stream->getNext();
                $stream->skipWhitespace();
            } else {
                break;
            }
        }

        return $selectors;
    }

    private function parserSelectorNode(TokenStream $stream): Node\SelectorNode
    {
        [$result, $pseudoElement] = $this->parseSimpleSelector($stream);

        while (true) {
            $stream->skipWhitespace();
            $peek = $stream->getPeek();

            if ($peek->isFileEnd() || $peek->isDelimiter([','])) {
                break;
            }

            if (null !== $pseudoElement) {
                throw SyntaxErrorException::pseudoElementFound($pseudoElement, 'not at the end of a selector');
            }

            if ($peek->isDelimiter(['+', '>', '~'])) {
                $combinator = $stream->getNext()->getValue();
                $stream->skipWhitespace();
            } else {
                $combinator = ' ';
            }

            [$nextSelector, $pseudoElement] = $this->parseSimpleSelector($stream);
            $result = new Node\CombinedSelectorNode($result, $combinator, $nextSelector);
        }

        return new Node\SelectorNode($result, $pseudoElement);
    }

    /**
     * Parses next simple node (hash, class, pseudo, negation).
     *
     * @throws SyntaxErrorException
     */
    private function parseSimpleSelector(TokenStream $stream, bool $insideNegation = false): array
    {
        $stream->skipWhitespace();

        $selectorStart = \count($stream->getUsed());
        $result = $this->parseElementNode($stream);
        $pseudoElement = null;

        while (true) {
            $peek = $stream->getPeek();
            if ($peek->isWhitespace()
                || $peek->isFileEnd()
                || $peek->isDelimiter([',', '+', '>', '~'])
                || ($insideNegation && $peek->isDelimiter([')']))
            ) {
                break;
            }

            if (null !== $pseudoElement) {
                throw SyntaxErrorException::pseudoElementFound($pseudoElement, 'not at the end of a selector');
            }

            if ($peek->isHash()) {
                $result = new Node\HashNode($result, $stream->getNext()->getValue());
            } elseif ($peek->isDelimiter(['.'])) {
                $stream->getNext();
                $result = new Node\ClassNode($result, $stream->getNextIdentifier());
            } elseif ($peek->isDelimiter(['['])) {
                $stream->getNext();
                $result = $this->parseAttributeNode($result, $stream);
            } elseif ($peek->isDelimiter([':'])) {
                $stream->getNext();

                if ($stream->getPeek()->isDelimiter([':'])) {
                    $stream->getNext();
                    $pseudoElement = $stream->getNextIdentifier();

                    continue;
                }

                $identifier = $stream->getNextIdentifier();
                if (\in_array(strtolower($identifier), ['first-line', 'first-letter', 'before', 'after'])) {
                    // Special case: CSS 2.1 pseudo-elements can have a single ':'.
                    // Any new pseudo-element must have two.
                    $pseudoElement = $identifier;

                    continue;
                }

                if (!$stream->getPeek()->isDelimiter(['('])) {
                    $result = new Node\PseudoNode($result, $identifier);

                    continue;
                }

                $stream->getNext();
                $stream->skipWhitespace();

                if ('not' === strtolower($identifier)) {
                    if ($insideNegation) {
                        throw SyntaxErrorException::nestedNot();
                    }

                    [$argument, $argumentPseudoElement] = $this->parseSimpleSelector($stream, true);
                    $next = $stream->getNext();

                    if (null !== $argumentPseudoElement) {
                        throw SyntaxErrorException::pseudoElementFound($argumentPseudoElement, 'inside ::not()');
                    }

                    if (!$next->isDelimiter([')'])) {
                        throw SyntaxErrorException::unexpectedToken('")"', $next);
                    }

                    $result = new Node\NegationNode($result, $argument);
                } else {
                    $arguments = [];
                    $next = null;

                    while (true) {
                        $stream->skipWhitespace();
                        $next = $stream->getNext();

                        if ($next->isIdentifier()
                            || $next->isString()
                            || $next->isNumber()
                            || $next->isDelimiter(['+', '-'])
                        ) {
                            $arguments[] = $next;
                        } elseif ($next->isDelimiter([')'])) {
                            break;
                        } else {
                            throw SyntaxErrorException::unexpectedToken('an argument', $next);
                        }
                    }

                    if (empty($arguments)) {
                        throw SyntaxErrorException::unexpectedToken('at least one argument', $next);
                    }

                    $result = new Node\FunctionNode($result, $identifier, $arguments);
                }
            } else {
                throw SyntaxErrorException::unexpectedToken('selector', $peek);
            }
        }

        if (\count($stream->getUsed()) === $selectorStart) {
            throw SyntaxErrorException::unexpectedToken('selector', $stream->getPeek());
        }

        return [$result, $pseudoElement];
    }

    private function parseElementNode(TokenStream $stream): Node\ElementNode
    {
        $peek = $stream->getPeek();

        if ($peek->isIdentifier() || $peek->isDelimiter(['*'])) {
            if ($peek->isIdentifier()) {
                $namespace = $stream->getNext()->getValue();
            } else {
                $stream->getNext();
                $namespace = null;
            }

            if ($stream->getPeek()->isDelimiter(['|'])) {
                $stream->getNext();
                $element = $stream->getNextIdentifierOrStar();
            } else {
                $element = $namespace;
                $namespace = null;
            }
        } else {
            $element = $namespace = null;
        }

        return new Node\ElementNode($namespace, $element);
    }

    private function parseAttributeNode(Node\NodeInterface $selector, TokenStream $stream): Node\AttributeNode
    {
        $stream->skipWhitespace();
        $attribute = $stream->getNextIdentifierOrStar();

        if (null === $attribute && !$stream->getPeek()->isDelimiter(['|'])) {
            throw SyntaxErrorException::unexpectedToken('"|"', $stream->getPeek());
        }

        if ($stream->getPeek()->isDelimiter(['|'])) {
            $stream->getNext();

            if ($stream->getPeek()->isDelimiter(['='])) {
                $namespace = null;
                $stream->getNext();
                $operator = '|=';
            } else {
                $namespace = $attribute;
                $attribute = $stream->getNextIdentifier();
                $operator = null;
            }
        } else {
            $namespace = $operator = null;
        }

        if (null === $operator) {
            $stream->skipWhitespace();
            $next = $stream->getNext();

            if ($next->isDelimiter([']'])) {
                return new Node\AttributeNode($selector, $namespace, $attribute, 'exists', null);
            } elseif ($next->isDelimiter(['='])) {
                $operator = '=';
            } elseif ($next->isDelimiter(['^', '$', '*', '~', '|', '!'])
                && $stream->getPeek()->isDelimiter(['='])
            ) {
                $operator = $next->getValue().'=';
                $stream->getNext();
            } else {
                throw SyntaxErrorException::unexpectedToken('operator', $next);
            }
        }

        $stream->skipWhitespace();
        $value = $stream->getNext();

        if ($value->isNumber()) {
            // if the value is a number, it's casted into a string
            $value = new Token(Token::TYPE_STRING, (string) $value->getValue(), $value->getPosition());
        }

        if (!($value->isIdentifier() || $value->isString())) {
            throw SyntaxErrorException::unexpectedToken('string or identifier', $value);
        }

        $stream->skipWhitespace();
        $next = $stream->getNext();

        if (!$next->isDelimiter([']'])) {
            throw SyntaxErrorException::unexpectedToken('"]"', $next);
        }

        return new Node\AttributeNode($selector, $namespace, $attribute, $operator, $value->getValue());
    }
}
ParserInterface.php000064400000001451151546446540010351 0ustar00<?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\Parser;

use Symfony\Component\CssSelector\Node\SelectorNode;

/**
 * CSS selector parser interface.
 *
 * 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 <jeanfrancois.simon@sensiolabs.com>
 *
 * @internal
 */
interface ParserInterface
{
    /**
     * Parses given selector source into an array of tokens.
     *
     * @return SelectorNode[]
     */
    public function parse(string $source): array;
}
Reader.php000064400000003532151546446540006500 0ustar00<?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\Parser;

/**
 * CSS selector reader.
 *
 * 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 <jeanfrancois.simon@sensiolabs.com>
 *
 * @internal
 */
class Reader
{
    private $source;
    private $length;
    private $position = 0;

    public function __construct(string $source)
    {
        $this->source = $source;
        $this->length = \strlen($source);
    }

    public function isEOF(): bool
    {
        return $this->position >= $this->length;
    }

    public function getPosition(): int
    {
        return $this->position;
    }

    public function getRemainingLength(): int
    {
        return $this->length - $this->position;
    }

    public function getSubstring(int $length, int $offset = 0): string
    {
        return substr($this->source, $this->position + $offset, $length);
    }

    public function getOffset(string $string)
    {
        $position = strpos($this->source, $string, $this->position);

        return false === $position ? false : $position - $this->position;
    }

    /**
     * @return array|false
     */
    public function findPattern(string $pattern)
    {
        $source = substr($this->source, $this->position);

        if (preg_match($pattern, $source, $matches)) {
            return $matches;
        }

        return false;
    }

    public function moveForward(int $length)
    {
        $this->position += $length;
    }

    public function moveToEnd()
    {
        $this->position = $this->length;
    }
}
Shortcut/ClassParser.php000064400000003074151546446540011334 0ustar00<?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\Parser\Shortcut;

use Symfony\Component\CssSelector\Node\ClassNode;
use Symfony\Component\CssSelector\Node\ElementNode;
use Symfony\Component\CssSelector\Node\SelectorNode;
use Symfony\Component\CssSelector\Parser\ParserInterface;

/**
 * CSS selector class parser shortcut.
 *
 * 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 <jeanfrancois.simon@sensiolabs.com>
 *
 * @internal
 */
class ClassParser implements ParserInterface
{
    /**
     * {@inheritdoc}
     */
    public function parse(string $source): array
    {
        // Matches an optional namespace, optional element, and required class
        // $source = 'test|input.ab6bd_field';
        // $matches = array (size=4)
        //     0 => string 'test|input.ab6bd_field' (length=22)
        //     1 => string 'test' (length=4)
        //     2 => string 'input' (length=5)
        //     3 => string 'ab6bd_field' (length=11)
        if (preg_match('/^(?:([a-z]++)\|)?+([\w-]++|\*)?+\.([\w-]++)$/i', trim($source), $matches)) {
            return [
                new SelectorNode(new ClassNode(new ElementNode($matches[1] ?: null, $matches[2] ?: null), $matches[3])),
            ];
        }

        return [];
    }
}
Shortcut/ElementParser.php000064400000002554151546446540011662 0ustar00<?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\Parser\Shortcut;

use Symfony\Component\CssSelector\Node\ElementNode;
use Symfony\Component\CssSelector\Node\SelectorNode;
use Symfony\Component\CssSelector\Parser\ParserInterface;

/**
 * CSS selector element parser shortcut.
 *
 * 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 <jeanfrancois.simon@sensiolabs.com>
 *
 * @internal
 */
class ElementParser implements ParserInterface
{
    /**
     * {@inheritdoc}
     */
    public function parse(string $source): array
    {
        // Matches an optional namespace, required element or `*`
        // $source = 'testns|testel';
        // $matches = array (size=3)
        //     0 => string 'testns|testel' (length=13)
        //     1 => string 'testns' (length=6)
        //     2 => string 'testel' (length=6)
        if (preg_match('/^(?:([a-z]++)\|)?([\w-]++|\*)$/i', trim($source), $matches)) {
            return [new SelectorNode(new ElementNode($matches[1] ?: null, $matches[2]))];
        }

        return [];
    }
}
Shortcut/EmptyStringParser.php000064400000002316151546446540012552 0ustar00<?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\Parser\Shortcut;

use Symfony\Component\CssSelector\Node\ElementNode;
use Symfony\Component\CssSelector\Node\SelectorNode;
use Symfony\Component\CssSelector\Parser\ParserInterface;

/**
 * CSS selector class parser shortcut.
 *
 * This shortcut ensure compatibility with previous version.
 * - The parser fails to parse an empty string.
 * - In the previous version, an empty string matches each tags.
 *
 * 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 <jeanfrancois.simon@sensiolabs.com>
 *
 * @internal
 */
class EmptyStringParser implements ParserInterface
{
    /**
     * {@inheritdoc}
     */
    public function parse(string $source): array
    {
        // Matches an empty string
        if ('' == $source) {
            return [new SelectorNode(new ElementNode(null, '*'))];
        }

        return [];
    }
}
Shortcut/HashParser.php000064400000003064151546446540011151 0ustar00<?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\Parser\Shortcut;

use Symfony\Component\CssSelector\Node\ElementNode;
use Symfony\Component\CssSelector\Node\HashNode;
use Symfony\Component\CssSelector\Node\SelectorNode;
use Symfony\Component\CssSelector\Parser\ParserInterface;

/**
 * CSS selector hash parser shortcut.
 *
 * 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 <jeanfrancois.simon@sensiolabs.com>
 *
 * @internal
 */
class HashParser implements ParserInterface
{
    /**
     * {@inheritdoc}
     */
    public function parse(string $source): array
    {
        // Matches an optional namespace, optional element, and required id
        // $source = 'test|input#ab6bd_field';
        // $matches = array (size=4)
        //     0 => string 'test|input#ab6bd_field' (length=22)
        //     1 => string 'test' (length=4)
        //     2 => string 'input' (length=5)
        //     3 => string 'ab6bd_field' (length=11)
        if (preg_match('/^(?:([a-z]++)\|)?+([\w-]++|\*)?+#([\w-]++)$/i', trim($source), $matches)) {
            return [
                new SelectorNode(new HashNode(new ElementNode($matches[1] ?: null, $matches[2] ?: null), $matches[3])),
            ];
        }

        return [];
    }
}
Token.php000064400000004714151546446540006361 0ustar00<?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\Parser;

/**
 * CSS selector token.
 *
 * 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 <jeanfrancois.simon@sensiolabs.com>
 *
 * @internal
 */
class Token
{
    public const TYPE_FILE_END = 'eof';
    public const TYPE_DELIMITER = 'delimiter';
    public const TYPE_WHITESPACE = 'whitespace';
    public const TYPE_IDENTIFIER = 'identifier';
    public const TYPE_HASH = 'hash';
    public const TYPE_NUMBER = 'number';
    public const TYPE_STRING = 'string';

    private $type;
    private $value;
    private $position;

    public function __construct(?string $type, ?string $value, ?int $position)
    {
        $this->type = $type;
        $this->value = $value;
        $this->position = $position;
    }

    public function getType(): ?int
    {
        return $this->type;
    }

    public function getValue(): ?string
    {
        return $this->value;
    }

    public function getPosition(): ?int
    {
        return $this->position;
    }

    public function isFileEnd(): bool
    {
        return self::TYPE_FILE_END === $this->type;
    }

    public function isDelimiter(array $values = []): bool
    {
        if (self::TYPE_DELIMITER !== $this->type) {
            return false;
        }

        if (empty($values)) {
            return true;
        }

        return \in_array($this->value, $values);
    }

    public function isWhitespace(): bool
    {
        return self::TYPE_WHITESPACE === $this->type;
    }

    public function isIdentifier(): bool
    {
        return self::TYPE_IDENTIFIER === $this->type;
    }

    public function isHash(): bool
    {
        return self::TYPE_HASH === $this->type;
    }

    public function isNumber(): bool
    {
        return self::TYPE_NUMBER === $this->type;
    }

    public function isString(): bool
    {
        return self::TYPE_STRING === $this->type;
    }

    public function __toString(): string
    {
        if ($this->value) {
            return sprintf('<%s "%s" at %s>', $this->type, $this->value, $this->position);
        }

        return sprintf('<%s at %s>', $this->type, $this->position);
    }
}
TokenStream.php000064400000006470151546446540007536 0ustar00<?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\Parser;

use Symfony\Component\CssSelector\Exception\InternalErrorException;
use Symfony\Component\CssSelector\Exception\SyntaxErrorException;

/**
 * CSS selector token stream.
 *
 * 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 <jeanfrancois.simon@sensiolabs.com>
 *
 * @internal
 */
class TokenStream
{
    /**
     * @var Token[]
     */
    private $tokens = [];

    /**
     * @var Token[]
     */
    private $used = [];

    /**
     * @var int
     */
    private $cursor = 0;

    /**
     * @var Token|null
     */
    private $peeked;

    /**
     * @var bool
     */
    private $peeking = false;

    /**
     * Pushes a token.
     *
     * @return $this
     */
    public function push(Token $token): self
    {
        $this->tokens[] = $token;

        return $this;
    }

    /**
     * Freezes stream.
     *
     * @return $this
     */
    public function freeze(): self
    {
        return $this;
    }

    /**
     * Returns next token.
     *
     * @throws InternalErrorException If there is no more token
     */
    public function getNext(): Token
    {
        if ($this->peeking) {
            $this->peeking = false;
            $this->used[] = $this->peeked;

            return $this->peeked;
        }

        if (!isset($this->tokens[$this->cursor])) {
            throw new InternalErrorException('Unexpected token stream end.');
        }

        return $this->tokens[$this->cursor++];
    }

    /**
     * Returns peeked token.
     */
    public function getPeek(): Token
    {
        if (!$this->peeking) {
            $this->peeked = $this->getNext();
            $this->peeking = true;
        }

        return $this->peeked;
    }

    /**
     * Returns used tokens.
     *
     * @return Token[]
     */
    public function getUsed(): array
    {
        return $this->used;
    }

    /**
     * Returns next identifier token.
     *
     * @throws SyntaxErrorException If next token is not an identifier
     */
    public function getNextIdentifier(): string
    {
        $next = $this->getNext();

        if (!$next->isIdentifier()) {
            throw SyntaxErrorException::unexpectedToken('identifier', $next);
        }

        return $next->getValue();
    }

    /**
     * Returns next identifier or null if star delimiter token is found.
     *
     * @throws SyntaxErrorException If next token is not an identifier or a star delimiter
     */
    public function getNextIdentifierOrStar(): ?string
    {
        $next = $this->getNext();

        if ($next->isIdentifier()) {
            return $next->getValue();
        }

        if ($next->isDelimiter(['*'])) {
            return null;
        }

        throw SyntaxErrorException::unexpectedToken('identifier or "*"', $next);
    }

    /**
     * Skips next whitespace if any.
     */
    public function skipWhitespace()
    {
        $peek = $this->getPeek();

        if ($peek->isWhitespace()) {
            $this->getNext();
        }
    }
}
Tokenizer/Tokenizer.php000064400000003762151546446540011227 0ustar00<?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\Parser\Tokenizer;

use Symfony\Component\CssSelector\Parser\Handler;
use Symfony\Component\CssSelector\Parser\Reader;
use Symfony\Component\CssSelector\Parser\Token;
use Symfony\Component\CssSelector\Parser\TokenStream;

/**
 * CSS selector tokenizer.
 *
 * 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 <jeanfrancois.simon@sensiolabs.com>
 *
 * @internal
 */
class Tokenizer
{
    /**
     * @var Handler\HandlerInterface[]
     */
    private $handlers;

    public function __construct()
    {
        $patterns = new TokenizerPatterns();
        $escaping = new TokenizerEscaping($patterns);

        $this->handlers = [
            new Handler\WhitespaceHandler(),
            new Handler\IdentifierHandler($patterns, $escaping),
            new Handler\HashHandler($patterns, $escaping),
            new Handler\StringHandler($patterns, $escaping),
            new Handler\NumberHandler($patterns),
            new Handler\CommentHandler(),
        ];
    }

    /**
     * Tokenize selector source code.
     */
    public function tokenize(Reader $reader): TokenStream
    {
        $stream = new TokenStream();

        while (!$reader->isEOF()) {
            foreach ($this->handlers as $handler) {
                if ($handler->handle($reader, $stream)) {
                    continue 2;
                }
            }

            $stream->push(new Token(Token::TYPE_DELIMITER, $reader->getSubstring(1), $reader->getPosition()));
            $reader->moveForward(1);
        }

        return $stream
            ->push(new Token(Token::TYPE_FILE_END, null, $reader->getPosition()))
            ->freeze();
    }
}
Tokenizer/TokenizerEscaping.php000064400000003360151546446540012673 0ustar00<?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\Parser\Tokenizer;

/**
 * CSS selector tokenizer escaping applier.
 *
 * 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 <jeanfrancois.simon@sensiolabs.com>
 *
 * @internal
 */
class TokenizerEscaping
{
    private $patterns;

    public function __construct(TokenizerPatterns $patterns)
    {
        $this->patterns = $patterns;
    }

    public function escapeUnicode(string $value): string
    {
        $value = $this->replaceUnicodeSequences($value);

        return preg_replace($this->patterns->getSimpleEscapePattern(), '$1', $value);
    }

    public function escapeUnicodeAndNewLine(string $value): string
    {
        $value = preg_replace($this->patterns->getNewLineEscapePattern(), '', $value);

        return $this->escapeUnicode($value);
    }

    private function replaceUnicodeSequences(string $value): string
    {
        return preg_replace_callback($this->patterns->getUnicodeEscapePattern(), function ($match) {
            $c = hexdec($match[1]);

            if (0x80 > $c %= 0x200000) {
                return \chr($c);
            }
            if (0x800 > $c) {
                return \chr(0xC0 | $c >> 6).\chr(0x80 | $c & 0x3F);
            }
            if (0x10000 > $c) {
                return \chr(0xE0 | $c >> 12).\chr(0x80 | $c >> 6 & 0x3F).\chr(0x80 | $c & 0x3F);
            }

            return '';
        }, $value);
    }
}
Tokenizer/TokenizerPatterns.php000064400000005332151546446540012743 0ustar00<?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\Parser\Tokenizer;

/**
 * CSS selector tokenizer patterns builder.
 *
 * 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 <jeanfrancois.simon@sensiolabs.com>
 *
 * @internal
 */
class TokenizerPatterns
{
    private $unicodeEscapePattern;
    private $simpleEscapePattern;
    private $newLineEscapePattern;
    private $escapePattern;
    private $stringEscapePattern;
    private $nonAsciiPattern;
    private $nmCharPattern;
    private $nmStartPattern;
    private $identifierPattern;
    private $hashPattern;
    private $numberPattern;
    private $quotedStringPattern;

    public function __construct()
    {
        $this->unicodeEscapePattern = '\\\\([0-9a-f]{1,6})(?:\r\n|[ \n\r\t\f])?';
        $this->simpleEscapePattern = '\\\\(.)';
        $this->newLineEscapePattern = '\\\\(?:\n|\r\n|\r|\f)';
        $this->escapePattern = $this->unicodeEscapePattern.'|\\\\[^\n\r\f0-9a-f]';
        $this->stringEscapePattern = $this->newLineEscapePattern.'|'.$this->escapePattern;
        $this->nonAsciiPattern = '[^\x00-\x7F]';
        $this->nmCharPattern = '[_a-z0-9-]|'.$this->escapePattern.'|'.$this->nonAsciiPattern;
        $this->nmStartPattern = '[_a-z]|'.$this->escapePattern.'|'.$this->nonAsciiPattern;
        $this->identifierPattern = '-?(?:'.$this->nmStartPattern.')(?:'.$this->nmCharPattern.')*';
        $this->hashPattern = '#((?:'.$this->nmCharPattern.')+)';
        $this->numberPattern = '[+-]?(?:[0-9]*\.[0-9]+|[0-9]+)';
        $this->quotedStringPattern = '([^\n\r\f\\\\%s]|'.$this->stringEscapePattern.')*';
    }

    public function getNewLineEscapePattern(): string
    {
        return '~'.$this->newLineEscapePattern.'~';
    }

    public function getSimpleEscapePattern(): string
    {
        return '~'.$this->simpleEscapePattern.'~';
    }

    public function getUnicodeEscapePattern(): string
    {
        return '~'.$this->unicodeEscapePattern.'~i';
    }

    public function getIdentifierPattern(): string
    {
        return '~^'.$this->identifierPattern.'~i';
    }

    public function getHashPattern(): string
    {
        return '~^'.$this->hashPattern.'~i';
    }

    public function getNumberPattern(): string
    {
        return '~^'.$this->numberPattern.'~';
    }

    public function getQuotedStringPattern(string $quote): string
    {
        return '~^'.sprintf($this->quotedStringPattern, $quote).'~i';
    }
}