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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\CssSelector\Parser\Tokenizer;
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/**
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* CSS selector tokenizer patterns builder.
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*
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* This component is a port of the Python cssselect library,
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* which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
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*
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* @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
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*
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* @internal
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*/
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class TokenizerPatterns
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{
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private string $unicodeEscapePattern;
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private string $simpleEscapePattern;
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private string $newLineEscapePattern;
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private string $escapePattern;
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private string $stringEscapePattern;
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private string $nonAsciiPattern;
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private string $nmCharPattern;
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private string $nmStartPattern;
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private string $identifierPattern;
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private string $hashPattern;
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private string $numberPattern;
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private string $quotedStringPattern;
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public function __construct()
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{
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$this->unicodeEscapePattern = '\\\\([0-9a-f]{1,6})(?:\r\n|[ \n\r\t\f])?';
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$this->simpleEscapePattern = '\\\\(.)';
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$this->newLineEscapePattern = '\\\\(?:\n|\r\n|\r|\f)';
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$this->escapePattern = $this->unicodeEscapePattern.'|\\\\[^\n\r\f0-9a-f]';
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$this->stringEscapePattern = $this->newLineEscapePattern.'|'.$this->escapePattern;
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$this->nonAsciiPattern = '[^\x00-\x7F]';
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$this->nmCharPattern = '[_a-z0-9-]|'.$this->escapePattern.'|'.$this->nonAsciiPattern;
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$this->nmStartPattern = '[_a-z]|'.$this->escapePattern.'|'.$this->nonAsciiPattern;
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$this->identifierPattern = '-?(?:'.$this->nmStartPattern.')(?:'.$this->nmCharPattern.')*';
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$this->hashPattern = '#((?:'.$this->nmCharPattern.')+)';
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$this->numberPattern = '[+-]?(?:[0-9]*\.[0-9]+|[0-9]+)';
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$this->quotedStringPattern = '([^\n\r\f\\\\%s]|'.$this->stringEscapePattern.')*';
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}
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public function getNewLineEscapePattern(): string
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{
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return '~'.$this->newLineEscapePattern.'~';
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}
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public function getSimpleEscapePattern(): string
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{
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return '~'.$this->simpleEscapePattern.'~';
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}
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public function getUnicodeEscapePattern(): string
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{
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return '~'.$this->unicodeEscapePattern.'~i';
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}
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public function getIdentifierPattern(): string
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{
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return '~^'.$this->identifierPattern.'~i';
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}
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public function getHashPattern(): string
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{
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return '~^'.$this->hashPattern.'~i';
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}
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public function getNumberPattern(): string
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{
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return '~^'.$this->numberPattern.'~';
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}
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public function getQuotedStringPattern(string $quote): string
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{
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return '~^'.sprintf($this->quotedStringPattern, $quote).'~i';
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}
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}
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