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Direktori : /home2/selectio/www/myclassicfit.com-1/vendor/psy/psysh/src/Util/ |
Current File : /home2/selectio/www/myclassicfit.com-1/vendor/psy/psysh/src/Util/Str.php |
<?php /* * This file is part of Psy Shell. * * (c) 2012-2023 Justin Hileman * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Psy\Util; /** * String utility methods. * * @author ju1ius */ class Str { const UNVIS_RX = <<<'EOS' / \\(?: ((?:040)|s) | (240) | (?: M-(.) ) | (?: M\^(.) ) | (?: \^(.) ) ) /xS EOS; /** * Decodes a string encoded by libsd's strvis. * * From `man 3 vis`: * * Use an ‘M’ to represent meta characters (characters with the 8th bit set), * and use a caret ‘^’ to represent control characters (see iscntrl(3)). * The following formats are used: * * \040 Represents ASCII space. * * \240 Represents Meta-space (  in HTML). * * \M-C Represents character ‘C’ with the 8th bit set. * Spans characters ‘\241’ through ‘\376’. * * \M^C Represents control character ‘C’ with the 8th bit set. * Spans characters ‘\200’ through ‘\237’, and ‘\377’ (as ‘\M^?’). * * \^C Represents the control character ‘C’. * Spans characters ‘\000’ through ‘\037’, and ‘\177’ (as ‘\^?’). * * The other formats are supported by PHP's stripcslashes, * except for the \s sequence (ASCII space). * * @param string $input The string to decode */ public static function unvis(string $input): string { $output = \preg_replace_callback(self::UNVIS_RX, [self::class, 'unvisReplace'], $input); // other escapes & octal are handled by stripcslashes return \stripcslashes($output); } /** * Callback for Str::unvis. * * @param array $match The matches passed by preg_replace_callback */ protected static function unvisReplace(array $match): string { // \040, \s if (!empty($match[1])) { return "\x20"; } // \240 if (!empty($match[2])) { return "\xa0"; } // \M-(.) if (isset($match[3]) && $match[3] !== '') { $chr = $match[3]; // unvis S_META1 $cp = 0200; $cp |= \ord($chr); return \chr($cp); } // \M^(.) if (isset($match[4]) && $match[4] !== '') { $chr = $match[4]; // unvis S_META | S_CTRL $cp = 0200; $cp |= ($chr === '?') ? 0177 : \ord($chr) & 037; return \chr($cp); } // \^(.) if (isset($match[5]) && $match[5] !== '') { $chr = $match[5]; // unvis S_CTRL $cp = 0; $cp |= ($chr === '?') ? 0177 : \ord($chr) & 037; return \chr($cp); } } }