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148 lars 1 
<?php declare(strict_types=1);
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/*
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 * This file is part of sebastian/environment.
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 *
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 * (c) Sebastian Bergmann <sebastian@phpunit.de>
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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namespace SebastianBergmann\Environment;
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use const DIRECTORY_SEPARATOR;
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use const STDIN;
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use const STDOUT;
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use function defined;
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use function fclose;
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use function fstat;
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use function function_exists;
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use function getenv;
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use function is_resource;
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use function is_string;
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use function posix_isatty;
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use function preg_match;
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use function proc_close;
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use function proc_open;
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use function sapi_windows_vt100_support;
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use function shell_exec;
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use function stream_get_contents;
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use function stream_isatty;
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use function trim;
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final class Console
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{
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    /**
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     * @var int
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     */
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    public const STDIN = 0;
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    /**
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     * @var int
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     */
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    public const STDOUT = 1;
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    /**
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     * @var int
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     */
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    public const STDERR = 2;
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    /**
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     * Returns true if STDOUT supports colorization.
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     *
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     * This code has been copied and adapted from
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     * Symfony\Component\Console\Output\StreamOutput.
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     */
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    public function hasColorSupport(): bool
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    {
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        if ('Hyper' === getenv('TERM_PROGRAM')) {
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            return true;
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        }
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        if ($this->isWindows()) {
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            // @codeCoverageIgnoreStart
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            return (defined('STDOUT') && function_exists('sapi_windows_vt100_support') && @sapi_windows_vt100_support(STDOUT)) ||
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                false !== getenv('ANSICON') ||
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                'ON' === getenv('ConEmuANSI') ||
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                'xterm' === getenv('TERM');
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            // @codeCoverageIgnoreEnd
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        }
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        if (!defined('STDOUT')) {
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            // @codeCoverageIgnoreStart
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            return false;
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            // @codeCoverageIgnoreEnd
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        }
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        return $this->isInteractive(STDOUT);
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    }
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    /**
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     * Returns the number of columns of the terminal.
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     *
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     * @codeCoverageIgnore
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     */
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    public function getNumberOfColumns(): int
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    {
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        if (!$this->isInteractive(defined('STDIN') ? STDIN : self::STDIN)) {
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            return 80;
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        }
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        if ($this->isWindows()) {
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            return $this->getNumberOfColumnsWindows();
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        }
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        return $this->getNumberOfColumnsInteractive();
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    }
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    /**
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     * Returns if the file descriptor is an interactive terminal or not.
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     *
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     * Normally, we want to use a resource as a parameter, yet sadly it's not always awailable,
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     * eg when running code in interactive console (`php -a`), STDIN/STDOUT/STDERR constants are not defined.
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     *
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     * @param int|resource $fileDescriptor
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     */
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    public function isInteractive($fileDescriptor = self::STDOUT): bool
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    {
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        if (is_resource($fileDescriptor)) {
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            if (function_exists('stream_isatty') && @stream_isatty($fileDescriptor)) {
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                return true;
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            }
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            if (function_exists('fstat')) {
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                $stat = @fstat(STDOUT);
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                return $stat && 0020000 === ($stat['mode'] & 0170000);
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            }
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            return false;
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        }
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        return function_exists('posix_isatty') && @posix_isatty($fileDescriptor);
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    }
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    private function isWindows(): bool
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    {
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        return DIRECTORY_SEPARATOR === '\\';
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    }
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    /**
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     * @codeCoverageIgnore
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     */
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    private function getNumberOfColumnsInteractive(): int
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    {
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        if (function_exists('shell_exec') && preg_match('#\d+ (\d+)#', shell_exec('stty size') ?: '', $match) === 1) {
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            if ((int) $match[1] > 0) {
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                return (int) $match[1];
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            }
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        }
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        if (function_exists('shell_exec') && preg_match('#columns = (\d+);#', shell_exec('stty') ?: '', $match) === 1) {
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            if ((int) $match[1] > 0) {
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                return (int) $match[1];
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            }
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        }
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        return 80;
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    }
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    /**
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     * @codeCoverageIgnore
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     */
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    private function getNumberOfColumnsWindows(): int
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    {
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        $ansicon = getenv('ANSICON');
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        $columns = 80;
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        if (is_string($ansicon) && preg_match('/^(\d+)x\d+ \(\d+x(\d+)\)$/', trim($ansicon), $matches)) {
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            $columns = (int) $matches[1];
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        } elseif (function_exists('proc_open')) {
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            $process = proc_open(
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                'mode CON',
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                [
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                    1 => ['pipe', 'w'],
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                    2 => ['pipe', 'w'],
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                ],
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                $pipes,
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                null,
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                null,
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                ['suppress_errors' => true]
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            );
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            if (is_resource($process)) {
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                $info = stream_get_contents($pipes[1]);
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                fclose($pipes[1]);
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                fclose($pipes[2]);
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                proc_close($process);
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                if (preg_match('/--------+\r?\n.+?(\d+)\r?\n.+?(\d+)\r?\n/', $info, $matches)) {
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                    $columns = (int) $matches[2];
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                }
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            }
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        }
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        return $columns - 1;
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    }
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}