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<?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; public function __construct(OutputInterface $output, $input = null) { $this->output = $output; $this->input = $input ?? (\defined('STDIN') ? \STDIN : fopen('php://input', 'r+')); } public function moveUp(int $lines = 1): self { $this->output->write(sprintf("\x1b[%dA", $lines)); return $this; } public function moveDown(int $lines = 1): self { $this->output->write(sprintf("\x1b[%dB", $lines)); return $this; } public function moveRight(int $columns = 1): self { $this->output->write(sprintf("\x1b[%dC", $columns)); return $this; } public function moveLeft(int $columns = 1): self { $this->output->write(sprintf("\x1b[%dD", $columns)); return $this; } public function moveToColumn(int $column): self { $this->output->write(sprintf("\x1b[%dG", $column)); return $this; } public function moveToPosition(int $column, int $row): self { $this->output->write(sprintf("\x1b[%d;%dH", $row + 1, $column)); return $this; } public function savePosition(): self { $this->output->write("\x1b7"); return $this; } public function restorePosition(): self { $this->output->write("\x1b8"); return $this; } public function hide(): self { $this->output->write("\x1b[?25l"); return $this; } public function show(): self { $this->output->write("\x1b[?25h\x1b[?0c"); return $this; } /** * Clears all the output from the current line. */ public function clearLine(): self { $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. */ public function clearOutput(): self { $this->output->write("\x1b[0J"); return $this; } /** * Clears the entire screen. */ public function clearScreen(): self { $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]; } }