StreamOutput.php

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<?php
 
namespace Symfony\Component\Console\Output;
 
/*
 * This file is part of the Symfony framework.
 *
 * (c) Fabien Potencier <fabien.potencier@symfony-project.com>
 *
 * This source file is subject to the MIT license that is bundled
 * with this source code in the file LICENSE.
 */
 
class StreamOutput extends Output
{
    protected $stream;
 
    public function __construct($stream, $verbosity = self::VERBOSITY_NORMAL, $decorated = null)
    {
        if (!is_resource($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 = $this->hasColorSupport($decorated);
        }
 
        parent::__construct($verbosity, $decorated);
    }
 
    public function getStream()
    {
        return $this->stream;
    }
 
    public function doWrite($message, $newline)
    {
        if (false === @fwrite($this->stream, $message.($newline ? PHP_EOL : ''))) {
            // @codeCoverageIgnoreStart
            // should never happen
            throw new \RuntimeException('Unable to write output.');
            // @codeCoverageIgnoreEnd
        }
 
        flush();
    }
 
    protected function hasColorSupport()
    {
        // @codeCoverageIgnoreStart
        if (DIRECTORY_SEPARATOR == '\\') {
            return false !== getenv('ANSICON');
        } else {
            return function_exists('posix_isatty') && @posix_isatty($this->stream);
        }
        // @codeCoverageIgnoreEnd
    }
}