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<?php |
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declare (strict_types=1); |
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namespace HumbugBox451\KevinGH\RequirementChecker; |
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use function exec; |
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use function fclose; |
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use function fopen; |
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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 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 stream_get_contents; |
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use function trim; |
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use const DIRECTORY_SEPARATOR; |
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/** @internal */ |
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class Terminal |
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{ |
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private static $width; |
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private static $height; |
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private static $stty; |
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public function getWidth() : int |
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{ |
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$width = getenv('COLUMNS'); |
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if (\false !== $width) { |
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return (int) trim($width); |
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} |
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if (!isset(self::$width)) { |
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self::initDimensions(); |
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} |
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return self::$width ?: 80; |
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} |
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public function getHeight() : int |
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{ |
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$height = getenv('LINES'); |
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if (\false !== $height) { |
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return (int) trim($height); |
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} |
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if (!isset(self::$height)) { |
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self::initDimensions(); |
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} |
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return self::$height ?: 50; |
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} |
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public static function hasSttyAvailable() : bool |
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{ |
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if (isset(self::$stty)) { |
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return self::$stty; |
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} |
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if (!function_exists('exec')) { |
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return \false; |
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} |
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exec('stty 2>&1', $output, $exitcode); |
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return self::$stty = 0 === $exitcode; |
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} |
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private static function initDimensions() : void |
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{ |
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if ('\\' === DIRECTORY_SEPARATOR) { |
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if (preg_match('/^(\\d+)x(\\d+)(?: \\((\\d+)x(\\d+)\\))?$/', trim(getenv('ANSICON') ?: ''), $matches)) { |
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self::$width = (int) $matches[1]; |
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self::$height = isset($matches[4]) ? (int) $matches[4] : (int) $matches[2]; |
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} elseif (!self::hasVt100Support() && self::hasSttyAvailable()) { |
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self::initDimensionsUsingStty(); |
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} elseif (null !== ($dimensions = self::getConsoleMode())) { |
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self::$width = (int) $dimensions[0]; |
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self::$height = (int) $dimensions[1]; |
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} |
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} else { |
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self::initDimensionsUsingStty(); |
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} |
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} |
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private static function hasVt100Support() : bool |
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{ |
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return function_exists('sapi_windows_vt100_support') && sapi_windows_vt100_support(fopen('php://stdout', 'wb')); |
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} |
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private static function initDimensionsUsingStty() : void |
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{ |
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if ($sttyString = self::getSttyColumns()) { |
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if (preg_match('/rows.(\\d+);.columns.(\\d+);/i', $sttyString, $matches)) { |
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self::$width = (int) $matches[2]; |
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self::$height = (int) $matches[1]; |
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} elseif (preg_match('/;.(\\d+).rows;.(\\d+).columns/i', $sttyString, $matches)) { |
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self::$width = (int) $matches[2]; |
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self::$height = (int) $matches[1]; |
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} |
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} |
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} |
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private static function getConsoleMode() : ?array |
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{ |
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$info = self::readFromProcess('mode CON'); |
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if (null === $info || !preg_match('/--------+\\r?\\n.+?(\\d+)\\r?\\n.+?(\\d+)\\r?\\n/', $info, $matches)) { |
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return null; |
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} |
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return [(int) $matches[2], (int) $matches[1]]; |
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} |
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private static function getSttyColumns() : ?string |
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{ |
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return self::readFromProcess('stty -a | grep columns'); |
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} |
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private static function readFromProcess(string $command) : ?string |
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{ |
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if (!function_exists('proc_open')) { |
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return null; |
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} |
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$descriptorspec = [1 => ['pipe', 'w'], 2 => ['pipe', 'w']]; |
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$process = proc_open($command, $descriptorspec, $pipes, null, null, ['suppress_errors' => \true]); |
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if (!is_resource($process)) { |
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return null; |
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} |
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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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return $info; |
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} |
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} |
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humbug /
box
