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diff --git a/vendor/symfony/console/Symfony/Component/Console/Output/StreamOutput.php b/vendor/symfony/console/Symfony/Component/Console/Output/StreamOutput.php
new file mode 100644
index 0000000..e00d065
--- /dev/null
+++ b/vendor/symfony/console/Symfony/Component/Console/Output/StreamOutput.php
@@ -0,0 +1,113 @@
+<?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 integer $verbosity The verbosity level (self::VERBOSITY_QUIET, self::VERBOSITY_NORMAL,
+     *                                   self::VERBOSITY_VERBOSE)
+     * @param Boolean         $decorated Whether to decorate messages or not (null for auto-guessing)
+     * @param OutputFormatter $formatter Output formatter instance
+     *
+     * @throws \InvalidArgumentException When first argument is not a real stream
+     *
+     * @api
+     */
+    public function __construct($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 = $this->hasColorSupport($decorated);
+        }
+
+        parent::__construct($verbosity, $decorated, $formatter);
+    }
+
+    /**
+     * Gets the stream attached to this StreamOutput instance.
+     *
+     * @return resource A stream resource
+     */
+    public function getStream()
+    {
+        return $this->stream;
+    }
+
+    /**
+     * Writes a message to the output.
+     *
+     * @param string  $message A message to write to the output
+     * @param Boolean $newline Whether to add a newline or not
+     *
+     * @throws \RuntimeException When unable to write output (should never happen)
+     */
+    protected function doWrite($message, $newline)
+    {
+        if (false === @fwrite($this->stream, $message.($newline ? PHP_EOL : ''))) {
+            // @codeCoverageIgnoreStart
+            // should never happen
+            throw new \RuntimeException('Unable to write output.');
+            // @codeCoverageIgnoreEnd
+        }
+
+        fflush($this->stream);
+    }
+
+    /**
+     * Returns true if the stream supports colorization.
+     *
+     * Colorization is disabled if not supported by the stream:
+     *
+     *  -  windows without ansicon
+     *  -  non tty consoles
+     *
+     * @return Boolean true if the stream supports colorization, false otherwise
+     */
+    protected function hasColorSupport()
+    {
+        // @codeCoverageIgnoreStart
+        if (DIRECTORY_SEPARATOR == '\\') {
+            return false !== getenv('ANSICON');
+        }
+
+        return function_exists('posix_isatty') && @posix_isatty($this->stream);
+        // @codeCoverageIgnoreEnd
+    }
+}