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Direktori : /home2/selectio/www/billingsoftwarenew/core/vendor/psy/psysh/src/Readline/ |
Current File : /home2/selectio/www/billingsoftwarenew/core/vendor/psy/psysh/src/Readline/GNUReadline.php |
<?php /* * This file is part of Psy Shell. * * (c) 2012-2022 Justin Hileman * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Psy\Readline; /** * A Readline interface implementation for GNU Readline. * * This is by far the coolest way to do it, if you can. * * Oh well. */ class GNUReadline implements Readline { /** @var string|false */ protected $historyFile; /** @var int */ protected $historySize; /** @var bool */ protected $eraseDups; /** * GNU Readline is supported iff `readline_list_history` is defined. PHP * decided it would be awesome to swap out GNU Readline for Libedit, but * they ended up shipping an incomplete implementation. So we've got this. * * NOTE: As of PHP 7.4, PHP sometimes has history support in the Libedit * wrapper, so that will use the GNUReadline implementation as well! * * @return bool */ public static function isSupported(): bool { return \function_exists('readline') && \function_exists('readline_list_history'); } /** * Check whether this readline implementation supports bracketed paste. * * Currently, the GNU readline implementation does, but the libedit wrapper does not. * * @return bool */ public static function supportsBracketedPaste(): bool { return self::isSupported() && \stripos(\readline_info('library_version') ?: '', 'editline') === false; } public function __construct($historyFile = null, $historySize = 0, $eraseDups = false) { $this->historyFile = ($historyFile !== null) ? $historyFile : false; $this->historySize = $historySize; $this->eraseDups = $eraseDups; \readline_info('readline_name', 'psysh'); } /** * {@inheritdoc} */ public function addHistory(string $line): bool { if ($res = \readline_add_history($line)) { $this->writeHistory(); } return $res; } /** * {@inheritdoc} */ public function clearHistory(): bool { if ($res = \readline_clear_history()) { $this->writeHistory(); } return $res; } /** * {@inheritdoc} */ public function listHistory(): array { return \readline_list_history(); } /** * {@inheritdoc} */ public function readHistory(): bool { \readline_read_history(); \readline_clear_history(); return \readline_read_history($this->historyFile); } /** * {@inheritdoc} */ public function readline(string $prompt = null) { return \readline($prompt); } /** * {@inheritdoc} */ public function redisplay() { \readline_redisplay(); } /** * {@inheritdoc} */ public function writeHistory(): bool { // We have to write history first, since it is used // by Libedit to list history if ($this->historyFile !== false) { $res = \readline_write_history($this->historyFile); } else { $res = true; } if (!$res || !$this->eraseDups && !$this->historySize > 0) { return $res; } $hist = $this->listHistory(); if (!$hist) { return true; } if ($this->eraseDups) { // flip-flip technique: removes duplicates, latest entries win. $hist = \array_flip(\array_flip($hist)); // sort on keys to get the order back \ksort($hist); } if ($this->historySize > 0) { $histsize = \count($hist); if ($histsize > $this->historySize) { $hist = \array_slice($hist, $histsize - $this->historySize); } } \readline_clear_history(); foreach ($hist as $line) { \readline_add_history($line); } if ($this->historyFile !== false) { return \readline_write_history($this->historyFile); } return true; } }