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Direktori : /home2/selectio/public_html/bharath/a1tex.in/vendor/psy/psysh/src/Readline/ |
Current File : /home2/selectio/public_html/bharath/a1tex.in/vendor/psy/psysh/src/Readline/Libedit.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\Readline; use Psy\Util\Str; /** * A Libedit-based Readline implementation. * * This is largely the same as the Readline implementation, but it emulates * support for `readline_list_history` since PHP decided it was a good idea to * ship a fake Readline implementation that is missing history support. * * NOTE: As of PHP 7.4, PHP sometimes has history support in the Libedit * wrapper, so it will use the GNUReadline implementation rather than this one. */ class Libedit extends GNUReadline { private $hasWarnedOwnership = false; /** * Let's emulate GNU Readline by manually reading and parsing the history file! */ public static function isSupported(): bool { return \function_exists('readline') && !\function_exists('readline_list_history'); } /** * {@inheritdoc} */ public static function supportsBracketedPaste(): bool { return false; } /** * {@inheritdoc} */ public function listHistory(): array { $history = \file_get_contents($this->historyFile); if (!$history) { return []; } // libedit doesn't seem to support non-unix line separators. $history = \explode("\n", $history); // remove history signature if it exists if ($history[0] === '_HiStOrY_V2_') { \array_shift($history); } // decode the line $history = \array_map([$this, 'parseHistoryLine'], $history); // filter empty lines & comments return \array_values(\array_filter($history)); } /** * {@inheritdoc} */ public function writeHistory(): bool { $res = parent::writeHistory(); // Libedit apparently refuses to save history if the history file is not // owned by the user, even if it is writable. Warn when this happens. // // See https://github.com/bobthecow/psysh/issues/552 if ($res === false && !$this->hasWarnedOwnership) { if (\is_file($this->historyFile) && \is_writable($this->historyFile)) { $this->hasWarnedOwnership = true; $msg = \sprintf('Error writing history file, check file ownership: %s', $this->historyFile); \trigger_error($msg, \E_USER_NOTICE); } } return $res; } /** * From GNUReadline (readline/histfile.c & readline/histexpand.c): * lines starting with "\0" are comments or timestamps; * if "\0" is found in an entry, * everything from it until the next line is a comment. * * @param string $line The history line to parse * * @return string|null */ protected function parseHistoryLine(string $line) { // empty line, comment or timestamp if (!$line || $line[0] === "\0") { return; } // if "\0" is found in an entry, then // everything from it until the end of line is a comment. if (($pos = \strpos($line, "\0")) !== false) { $line = \substr($line, 0, $pos); } return ($line !== '') ? Str::unvis($line) : null; } }