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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\Output; use Symfony\Component\Console\Formatter\OutputFormatterInterface; /** * StreamOutput writes the output to a given stream. * * Usage: * * $output = new StreamOutput(fopen('php://stdout', 'w')); * * As `StreamOutput` can use any stream, you can also use a file: * * $output = new StreamOutput(fopen('/path/to/output.log', 'a', false)); * * @author Fabien Potencier <fabien@symfony.com> * * @api */ class StreamOutput extends Output { private $stream; /** * Constructor. * * @param mixed $stream A stream resource * @param int $verbosity The verbosity level (one of the VERBOSITY constants in OutputInterface) * @param bool|null $decorated Whether to decorate messages (null for auto-guessing) * @param OutputFormatterInterface|null $formatter Output formatter instance (null to use default OutputFormatter) * * @throws \InvalidArgumentException When first argument is not a real stream * * @api */ public function __construct($stream, $verbosity = self::VERBOSITY_NORMAL, $decorated = null, OutputFormatterInterface $formatter = null) { if (!is_resource($stream) || 'stream' !== get_resource_type($stream)) { throw new \InvalidArgumentException('The StreamOutput class needs a stream as its first argument.'); } $this->stream = $stream; if (null === $decorated) { $decorated = $this->hasColorSupport(); } parent::__construct($verbosity, $decorated, $formatter); } /** * Gets the stream attached to this StreamOutput instance. * * @return resource A stream resource */ public function getStream() { return $this->stream; } /** * {@inheritdoc} */ protected function doWrite($message, $newline) { if (false === @fwrite($this->stream, $message.($newline ? PHP_EOL : ''))) { // should never happen throw new \RuntimeException('Unable to write output.'); } fflush($this->stream); } /** * Returns true if the stream supports colorization. * * Colorization is disabled if not supported by the stream: * * - Windows without Ansicon and ConEmu * - non tty consoles * * @return bool true if the stream supports colorization, false otherwise */ protected function hasColorSupport() { if (DIRECTORY_SEPARATOR == '\\') { return false !== getenv('ANSICON') || 'ON' === getenv('ConEmuANSI'); } return function_exists('posix_isatty') && @posix_isatty($this->stream); } }
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