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?? Command
?? Dumper.php(7.03 KB)
?? Escaper.php(3.14 KB)
?? Exception
?? Inline.php(36.06 KB)
?? LICENSE(1.04 KB)
?? Parser.php(49.03 KB)
?? README.md(452 B)
?? Resources
?? Tag
?? Unescaper.php(3.51 KB)
?? Yaml.php(2.93 KB)
?? composer.json(931 B)

Editing: Unescaper.php

<?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 RectorPrefix202411\Symfony\Component\Yaml;

use RectorPrefix202411\Symfony\Component\Yaml\Exception\ParseException;
/**
 * Unescaper encapsulates unescaping rules for single and double-quoted
 * YAML strings.
 *
 * @author Matthew Lewinski <matthew@lewinski.org>
 *
 * @internal
 */
class Unescaper
{
    /**
     * Regex fragment that matches an escaped character in a double quoted string.
     */
    public const REGEX_ESCAPED_CHARACTER = '\\\\(x[0-9a-fA-F]{2}|u[0-9a-fA-F]{4}|U[0-9a-fA-F]{8}|.)';
    /**
     * Unescapes a single quoted string.
     *
     * @param string $value A single quoted string
     */
    public function unescapeSingleQuotedString(string $value) : string
    {
        return \str_replace('\'\'', '\'', $value);
    }
    /**
     * Unescapes a double quoted string.
     *
     * @param string $value A double quoted string
     */
    public function unescapeDoubleQuotedString(string $value) : string
    {
        $callback = function ($match) {
            return $this->unescapeCharacter($match[0]);
        };
        // evaluate the string
        return \preg_replace_callback('/' . self::REGEX_ESCAPED_CHARACTER . '/u', $callback, $value);
    }
    /**
     * Unescapes a character that was found in a double-quoted string.
     *
     * @param string $value An escaped character
     */
    private function unescapeCharacter(string $value) : string
    {
        switch ($value[1]) {
            case '0':
                return "\x00";
            case 'a':
                return "\x07";
            case 'b':
                return "\x08";
            case 't':
                return "\t";
            case "\t":
                return "\t";
            case 'n':
                return "\n";
            case 'v':
                return "\v";
            case 'f':
                return "\f";
            case 'r':
                return "\r";
            case 'e':
                return "\x1b";
            case ' ':
                return ' ';
            case '"':
                return '"';
            case '/':
                return '/';
            case '\\':
                return '\\';
            case 'N':
                return "";
            case '_':
                return " ";
            case 'L':
                return " ";
            case 'P':
                return " ";
            case 'x':
                return self::utf8chr(\hexdec(\substr($value, 2, 2)));
            case 'u':
                return self::utf8chr(\hexdec(\substr($value, 2, 4)));
            case 'U':
                return self::utf8chr(\hexdec(\substr($value, 2, 8)));
            default:
                throw new ParseException(\sprintf('Found unknown escape character "%s".', $value));
        }
    }
    /**
     * Get the UTF-8 character for the given code point.
     */
    private static function utf8chr(int $c) : string
    {
        if (0x80 > ($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 \chr(0xf0 | $c >> 18) . \chr(0x80 | $c >> 12 & 0x3f) . \chr(0x80 | $c >> 6 & 0x3f) . \chr(0x80 | $c & 0x3f);
    }
}

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