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<?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;
use Psy\Exception\BreakException;
use Psy\Readline\Hoa\Console as HoaConsole;
use Psy\Readline\Hoa\ConsoleCursor as HoaConsoleCursor;
use Psy\Readline\Hoa\ConsoleInput as HoaConsoleInput;
use Psy\Readline\Hoa\ConsoleOutput as HoaConsoleOutput;
use Psy\Readline\Hoa\ConsoleTput as HoaConsoleTput;
use Psy\Readline\Hoa\Readline as HoaReadline;
use Psy\Readline\Hoa\Ustring as HoaUstring;
/**
* Userland Readline implementation.
*/
class Userland implements Readline
{
/** @var HoaReadline */
private $hoaReadline;
/** @var string|null */
private $lastPrompt;
private $tput;
private $input;
private $output;
/**
* @return bool
*/
public static function isSupported(): bool
{
static::bootstrapHoa();
return HoaUstring::checkMbString() && HoaConsoleTput::isSupported();
}
/**
* {@inheritdoc}
*/
public static function supportsBracketedPaste(): bool
{
return false;
}
/**
* Doesn't (currently) support history file, size or erase dupes configs.
*/
public function __construct($historyFile = null, $historySize = 0, $eraseDups = false)
{
static::bootstrapHoa(true);
$this->hoaReadline = new HoaReadline();
$this->hoaReadline->addMapping('\C-l', function () {
$this->redisplay();
return HoaReadline::STATE_NO_ECHO;
});
$this->tput = new HoaConsoleTput();
HoaConsole::setTput($this->tput);
$this->input = new HoaConsoleInput();
HoaConsole::setInput($this->input);
$this->output = new HoaConsoleOutput();
HoaConsole::setOutput($this->output);
}
/**
* Bootstrap some things that Hoa used to do itself.
*/
public static function bootstrapHoa(bool $withTerminalResize = false)
{
// A side effect registers hoa:// stream wrapper
\class_exists('Psy\Readline\Hoa\ProtocolWrapper');
// A side effect registers hoa://Library/Stream
\class_exists('Psy\Readline\Hoa\Stream');
// A side effect binds terminal resize
$withTerminalResize && \class_exists('Psy\Readline\Hoa\ConsoleWindow');
}
/**
* {@inheritdoc}
*/
public function addHistory(string $line): bool
{
$this->hoaReadline->addHistory($line);
return true;
}
/**
* {@inheritdoc}
*/
public function clearHistory(): bool
{
$this->hoaReadline->clearHistory();
return true;
}
/**
* {@inheritdoc}
*/
public function listHistory(): array
{
$i = 0;
$list = [];
while (($item = $this->hoaReadline->getHistory($i++)) !== null) {
$list[] = $item;
}
return $list;
}
/**
* {@inheritdoc}
*/
public function readHistory(): bool
{
return true;
}
/**
* {@inheritdoc}
*
* @throws BreakException if user hits Ctrl+D
*
* @return string
*/
public function readline(string $prompt = null)
{
$this->lastPrompt = $prompt;
return $this->hoaReadline->readLine($prompt);
}
/**
* {@inheritdoc}
*/
public function redisplay()
{
$currentLine = $this->hoaReadline->getLine();
HoaConsoleCursor::clear('all');
echo $this->lastPrompt, $currentLine;
}
/**
* {@inheritdoc}
*/
public function writeHistory(): bool
{
return true;
}
}
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