<?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\Exception\InvalidArgumentException;
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>
 */
class StreamOutput extends Output
{
    /** @var resource */
    private $stream;

    /**
     * @param resource                      $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 $formatter Output formatter instance (null to use default OutputFormatter)
     *
     * @throws InvalidArgumentException When first argument is not a real stream
     */
    public function __construct($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);
    }

    /**
     * Gets the stream attached to this StreamOutput instance.
     *
     * @return resource
     */
    public function getStream()
    {
        return $this->stream;
    }

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

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

        fflush($this->stream);
    }

    /**
     * Returns true if the stream supports colorization.
     *
     * Colorization is disabled if not supported by the stream:
     *
     * This is tricky on Windows, because Cygwin, Msys2 etc emulate pseudo
     * terminals via named pipes, so we can only check the environment.
     *
     * Reference: Composer\XdebugHandler\Process::supportsColor
     * https://github.com/composer/xdebug-handler
     *
     * @return bool true if the stream supports colorization, false otherwise
     */
    protected function hasColorSupport(): bool
    {
        // Follow https://no-color.org/
        if ('' !== ($_SERVER['NO_COLOR'] ?? getenv('NO_COLOR') ?: '')) {
            return false;
        }

        // Detect msysgit/mingw and assume this is a tty because detection
        // does not work correctly, see https://github.com/composer/composer/issues/9690
        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;
        }

        // See https://github.com/chalk/supports-color/blob/d4f413efaf8da045c5ab440ed418ef02dbb28bf1/index.js#L157
        return preg_match('/^((screen|xterm|vt100|vt220|putty|rxvt|ansi|cygwin|linux).*)|(.*-256(color)?(-bce)?)$/', $term);
    }
}

.NET Framework

Project Request

ProjectC

Vehicle Maintenance

Movie Navigator

Customers Exchange

ATM

.NET Core

Mail Daemon

Custom

Buns of code

PHP

Mediabox

Loan Castle

Content Management

Laravel

Phone Check

Frontend

Forex Wall

Business projects

Certification Center

Amerikas Auto

Pet projects

Geolocation Assistant

Web Dynamics

Blackball

Good old times

DOS Clock

BrainOut

Airport Administrator

Atomizer

Mediabox