Developer
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Console;
use Symfony\Component\Console\Output\OutputInterface;
/**
* @author Pierre du Plessis <pdples@gmail.com>
*/
final class Cursor
{
private $output;
private $input;
/**
* @param resource|null $input
*/
public function __construct(OutputInterface $output, $input = null)
{
$this->output = $output;
$this->input = $input ?? (\defined('STDIN') ? \STDIN : fopen('php://input', 'r+'));
}
/**
* @return $this
*/
public function moveUp(int $lines = 1): static
{
$this->output->write(sprintf("\x1b[%dA", $lines));
return $this;
}
/**
* @return $this
*/
public function moveDown(int $lines = 1): static
{
$this->output->write(sprintf("\x1b[%dB", $lines));
return $this;
}
/**
* @return $this
*/
public function moveRight(int $columns = 1): static
{
$this->output->write(sprintf("\x1b[%dC", $columns));
return $this;
}
/**
* @return $this
*/
public function moveLeft(int $columns = 1): static
{
$this->output->write(sprintf("\x1b[%dD", $columns));
return $this;
}
/**
* @return $this
*/
public function moveToColumn(int $column): static
{
$this->output->write(sprintf("\x1b[%dG", $column));
return $this;
}
/**
* @return $this
*/
public function moveToPosition(int $column, int $row): static
{
$this->output->write(sprintf("\x1b[%d;%dH", $row + 1, $column));
return $this;
}
/**
* @return $this
*/
public function savePosition(): static
{
$this->output->write("\x1b7");
return $this;
}
/**
* @return $this
*/
public function restorePosition(): static
{
$this->output->write("\x1b8");
return $this;
}
/**
* @return $this
*/
public function hide(): static
{
$this->output->write("\x1b[?25l");
return $this;
}
/**
* @return $this
*/
public function show(): static
{
$this->output->write("\x1b[?25h\x1b[?0c");
return $this;
}
/**
* Clears all the output from the current line.
*
* @return $this
*/
public function clearLine(): static
{
$this->output->write("\x1b[2K");
return $this;
}
/**
* Clears all the output from the current line after the current position.
*/
public function clearLineAfter(): self
{
$this->output->write("\x1b[K");
return $this;
}
/**
* Clears all the output from the cursors' current position to the end of the screen.
*
* @return $this
*/
public function clearOutput(): static
{
$this->output->write("\x1b[0J");
return $this;
}
/**
* Clears the entire screen.
*
* @return $this
*/
public function clearScreen(): static
{
$this->output->write("\x1b[2J");
return $this;
}
/**
* Returns the current cursor position as x,y coordinates.
*/
public function getCurrentPosition(): array
{
static $isTtySupported;
if (null === $isTtySupported && \function_exists('proc_open')) {
$isTtySupported = (bool) @proc_open('echo 1 >/dev/null', [['file', '/dev/tty', 'r'], ['file', '/dev/tty', 'w'], ['file', '/dev/tty', 'w']], $pipes);
}
if (!$isTtySupported) {
return [1, 1];
}
$sttyMode = shell_exec('stty -g');
shell_exec('stty -icanon -echo');
@fwrite($this->input, "\033[6n");
$code = trim(fread($this->input, 1024));
shell_exec(sprintf('stty %s', $sttyMode));
sscanf($code, "\033[%d;%dR", $row, $col);
return [$col, $row];
}
}
Developer
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