<?php


namespace Symfony\Component\Console\Output;

use Symfony\Component\Console\Exception\InvalidArgumentException;
use Symfony\Component\Console\Formatter\OutputFormatterInterface;


class StreamOutput extends Output
{
    
    private $stream;

    
    public function __construct($stream, int $verbosity = self::VERBOSITY_NORMAL, ?bool $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;

        $decorated ??= $this->hasColorSupport();

        parent::__construct($verbosity, $decorated, $formatter);
    }

    
    public function getStream()
    {
        return $this->stream;
    }

    
    protected function doWrite(string $message, bool $newline)
    {
        if ($newline) {
            $message .= \PHP_EOL;
        }

        @fwrite($this->stream, $message);

        fflush($this->stream);
    }

    
    protected function hasColorSupport(): bool
    {
        
        if ('' !== (($_SERVER['NO_COLOR'] ?? getenv('NO_COLOR'))[0] ?? '')) {
            return false;
        }

        
        if (!@stream_isatty($this->stream) && !\in_array(strtoupper((string) getenv('MSYSTEM')), ['MINGW32', 'MINGW64'], true)) {
            return false;
        }

        if ('\\' === \DIRECTORY_SEPARATOR && @sapi_windows_vt100_support($this->stream)) {
            return true;
        }

        if ('Hyper' === getenv('TERM_PROGRAM')
            || false !== getenv('COLORTERM')
            || false !== getenv('ANSICON')
            || 'ON' === getenv('ConEmuANSI')
        ) {
            return true;
        }

        if ('dumb' === $term = (string) getenv('TERM')) {
            return false;
        }

        
        return preg_match('/^((screen|xterm|vt100|vt220|putty|rxvt|ansi|cygwin|linux).*)|(.*-256(color)?(-bce)?)$/', $term);
    }
}