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<?php
/*
* This file is part of Psy Shell.
*
* (c) 2012-2020 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 Hoa\Console\Console;
use Hoa\Console\Cursor;
use Hoa\Console\Readline\Readline as HoaReadline;
use Psy\Exception\BreakException;
/**
* Hoa\Console Readline implementation.
*/
class HoaConsole implements Readline
{
/** @var HoaReadline */
private $hoaReadline;
/** @var string|null */
private $lastPrompt;
/**
* @return bool
*/
public static function isSupported()
{
return \class_exists(Console::class, true);
}
public function __construct()
{
$this->hoaReadline = new HoaReadline();
$this->hoaReadline->addMapping('\C-l', function () {
$this->redisplay();
return HoaReadline::STATE_NO_ECHO;
});
}
/**
* {@inheritdoc}
*/
public function addHistory($line)
{
$this->hoaReadline->addHistory($line);
return true;
}
/**
* {@inheritdoc}
*/
public function clearHistory()
{
$this->hoaReadline->clearHistory();
return true;
}
/**
* {@inheritdoc}
*/
public function listHistory()
{
$i = 0;
$list = [];
while (($item = $this->hoaReadline->getHistory($i++)) !== null) {
$list[] = $item;
}
return $list;
}
/**
* {@inheritdoc}
*/
public function readHistory()
{
return true;
}
/**
* {@inheritdoc}
*
* @throws BreakException if user hits Ctrl+D
*
* @return string
*/
public function readline($prompt = null)
{
$this->lastPrompt = $prompt;
return $this->hoaReadline->readLine($prompt);
}
/**
* {@inheritdoc}
*/
public function redisplay()
{
$currentLine = $this->hoaReadline->getLine();
Cursor::clear('all');
echo $this->lastPrompt, $currentLine;
}
/**
* {@inheritdoc}
*/
public function writeHistory()
{
return true;
}
}