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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace RectorPrefix202308\Symfony\Component\Console;
use RectorPrefix202308\Symfony\Component\Console\Output\AnsiColorMode;
class Terminal
{
public const DEFAULT_COLOR_MODE = AnsiColorMode::Ansi4;
/**
* @var \Symfony\Component\Console\Output\AnsiColorMode|null
*/
private static $colorMode;
/**
* @var int|null
*/
private static $width;
/**
* @var int|null
*/
private static $height;
/**
* @var bool|null
*/
private static $stty;
/**
* About Ansi color types: https://en.wikipedia.org/wiki/ANSI_escape_code#Colors
* For more information about true color support with terminals https://github.com/termstandard/colors/.
*/
public static function getColorMode() : AnsiColorMode
{
// Use Cache from previous run (or user forced mode)
if (null !== self::$colorMode) {
return self::$colorMode;
}
// Try with $COLORTERM first
if (\is_string($colorterm = \getenv('COLORTERM'))) {
$colorterm = \strtolower($colorterm);
if (\strpos($colorterm, 'truecolor') !== \false) {
self::setColorMode(AnsiColorMode::Ansi24);
return self::$colorMode;
}
if (\strpos($colorterm, '256color') !== \false) {
self::setColorMode(AnsiColorMode::Ansi8);
return self::$colorMode;
}
}
// Try with $TERM
if (\is_string($term = \getenv('TERM'))) {
$term = \strtolower($term);
if (\strpos($term, 'truecolor') !== \false) {
self::setColorMode(AnsiColorMode::Ansi24);
return self::$colorMode;
}
if (\strpos($term, '256color') !== \false) {
self::setColorMode(AnsiColorMode::Ansi8);
return self::$colorMode;
}
}
self::setColorMode(self::DEFAULT_COLOR_MODE);
return self::$colorMode;
}
/**
* Force a terminal color mode rendering.
* @param ?\Symfony\Component\Console\Output\AnsiColorMode::* $colorMode
*/
public static function setColorMode(?string $colorMode) : void
{
self::$colorMode = $colorMode;
}
/**
* Gets the terminal width.
*/
public function getWidth() : int
{
$width = \getenv('COLUMNS');
if (\false !== $width) {
return (int) \trim($width);
}
if (null === self::$width) {
self::initDimensions();
}
return self::$width ?: 80;
}
/**
* Gets the terminal height.
*/
public function getHeight() : int
{
$height = \getenv('LINES');
if (\false !== $height) {
return (int) \trim($height);
}
if (null === self::$height) {
self::initDimensions();
}
return self::$height ?: 50;
}
/**
* @internal
*/
public static function hasSttyAvailable() : bool
{
if (null !== self::$stty) {
return self::$stty;
}
// skip check if shell_exec function is disabled
if (!\function_exists('shell_exec')) {
return \false;
}
return self::$stty = (bool) \shell_exec('stty 2> ' . ('\\' === \DIRECTORY_SEPARATOR ? 'NUL' : '/dev/null'));
}
private static function initDimensions() : void
{
if ('\\' === \DIRECTORY_SEPARATOR) {
$ansicon = \getenv('ANSICON');
if (\false !== $ansicon && \preg_match('/^(\\d+)x(\\d+)(?: \\((\\d+)x(\\d+)\\))?$/', \trim($ansicon), $matches)) {
// extract [w, H] from "wxh (WxH)"
// or [w, h] from "wxh"
self::$width = (int) $matches[1];
self::$height = isset($matches[4]) ? (int) $matches[4] : (int) $matches[2];
} elseif (!self::hasVt100Support() && self::hasSttyAvailable()) {
// only use stty on Windows if the terminal does not support vt100 (e.g. Windows 7 + git-bash)
// testing for stty in a Windows 10 vt100-enabled console will implicitly disable vt100 support on STDOUT
self::initDimensionsUsingStty();
} elseif (null !== ($dimensions = self::getConsoleMode())) {
// extract [w, h] from "wxh"
self::$width = (int) $dimensions[0];
self::$height = (int) $dimensions[1];
}
} else {
self::initDimensionsUsingStty();
}
}
/**
* Returns whether STDOUT has vt100 support (some Windows 10+ configurations).
*/
private static function hasVt100Support() : bool
{
return \function_exists('sapi_windows_vt100_support') && \sapi_windows_vt100_support(\fopen('php://stdout', 'w'));
}
/**
* Initializes dimensions using the output of an stty columns line.
*/
private static function initDimensionsUsingStty() : void
{
if ($sttyString = self::getSttyColumns()) {
if (\preg_match('/rows.(\\d+);.columns.(\\d+);/is', $sttyString, $matches)) {
// extract [w, h] from "rows h; columns w;"
self::$width = (int) $matches[2];
self::$height = (int) $matches[1];
} elseif (\preg_match('/;.(\\d+).rows;.(\\d+).columns/is', $sttyString, $matches)) {
// extract [w, h] from "; h rows; w columns"
self::$width = (int) $matches[2];
self::$height = (int) $matches[1];
}
}
}
/**
* Runs and parses mode CON if it's available, suppressing any error output.
*
* @return int[]|null An array composed of the width and the height or null if it could not be parsed
*/
private static function getConsoleMode() : ?array
{
$info = self::readFromProcess('mode CON');
if (null === $info || !\preg_match('/--------+\\r?\\n.+?(\\d+)\\r?\\n.+?(\\d+)\\r?\\n/', $info, $matches)) {
return null;
}
return [(int) $matches[2], (int) $matches[1]];
}
/**
* Runs and parses stty -a if it's available, suppressing any error output.
*/
private static function getSttyColumns() : ?string
{
return self::readFromProcess(['stty', '-a']);
}
/**
* @param string|mixed[] $command
*/
private static function readFromProcess($command) : ?string
{
if (!\function_exists('proc_open')) {
return null;
}
$descriptorspec = [1 => ['pipe', 'w'], 2 => ['pipe', 'w']];
$cp = \function_exists('sapi_windows_cp_set') ? \sapi_windows_cp_get() : 0;
$process = \proc_open(\is_array($command) ? \implode(' ', $command) : $command, $descriptorspec, $pipes, null, null, ['suppress_errors' => \true]);
if (!\is_resource($process)) {
return null;
}
$info = \stream_get_contents($pipes[1]);
\fclose($pipes[1]);
\fclose($pipes[2]);
\proc_close($process);
if ($cp) {
\sapi_windows_cp_set($cp);
}
return $info;
}
}