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Direktori : /home2/selectio/www/limpiar.in.net/vendor/phpstan/phpdoc-parser/src/Parser/ |
Current File : //home2/selectio/www/limpiar.in.net/vendor/phpstan/phpdoc-parser/src/Parser/StringUnescaper.php |
<?php declare(strict_types = 1); namespace PHPStan\PhpDocParser\Parser; use function chr; use function hexdec; use function octdec; use function preg_replace_callback; use function str_replace; use function substr; class StringUnescaper { private const REPLACEMENTS = [ '\\' => '\\', 'n' => "\n", 'r' => "\r", 't' => "\t", 'f' => "\f", 'v' => "\v", 'e' => "\x1B", ]; public static function unescapeString(string $string): string { $quote = $string[0]; if ($quote === '\'') { return str_replace( ['\\\\', '\\\''], ['\\', '\''], substr($string, 1, -1) ); } return self::parseEscapeSequences(substr($string, 1, -1), '"'); } /** * Implementation based on https://github.com/nikic/PHP-Parser/blob/b0edd4c41111042d43bb45c6c657b2e0db367d9e/lib/PhpParser/Node/Scalar/String_.php#L90-L130 */ private static function parseEscapeSequences(string $str, string $quote): string { $str = str_replace('\\' . $quote, $quote, $str); return preg_replace_callback( '~\\\\([\\\\nrtfve]|[xX][0-9a-fA-F]{1,2}|[0-7]{1,3}|u\{([0-9a-fA-F]+)\})~', static function ($matches) { $str = $matches[1]; if (isset(self::REPLACEMENTS[$str])) { return self::REPLACEMENTS[$str]; } if ($str[0] === 'x' || $str[0] === 'X') { return chr((int) hexdec(substr($str, 1))); } if ($str[0] === 'u') { return self::codePointToUtf8((int) hexdec($matches[2])); } return chr((int) octdec($str)); }, $str ); } /** * Implementation based on https://github.com/nikic/PHP-Parser/blob/b0edd4c41111042d43bb45c6c657b2e0db367d9e/lib/PhpParser/Node/Scalar/String_.php#L132-L154 */ private static function codePointToUtf8(int $num): string { if ($num <= 0x7F) { return chr($num); } if ($num <= 0x7FF) { return chr(($num >> 6) + 0xC0) . chr(($num & 0x3F) + 0x80); } if ($num <= 0xFFFF) { return chr(($num >> 12) + 0xE0) . chr((($num >> 6) & 0x3F) + 0x80) . chr(($num & 0x3F) + 0x80); } if ($num <= 0x1FFFFF) { return chr(($num >> 18) + 0xF0) . chr((($num >> 12) & 0x3F) + 0x80) . chr((($num >> 6) & 0x3F) + 0x80) . chr(($num & 0x3F) + 0x80); } // Invalid UTF-8 codepoint escape sequence: Codepoint too large return "\xef\xbf\xbd"; } }