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<?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;
use Symfony\Component\Console\Output\AnsiColorMode;
class Terminal
{
public const DEFAULT_COLOR_MODE = AnsiColorMode::Ansi4;
private static ?AnsiColorMode $colorMode = null;
private static ?int $width = null;
private static ?int $height = null;
private static ?bool $stty = null;
private static ?bool $kittyGraphics = null;
private static ?bool $iterm2Images = null;
/**
* About Ansi color types: https://en.wikipedia.org/wiki/ANSI_escape_code#Colors
* For more information about true color support with terminals https://github.com/termstandard/colors/.
*/
public static function getColorMode(): AnsiColorMode
{
// Use Cache from previous run (or user forced mode)
if (null !== self::$colorMode) {
return self::$colorMode;
}
// Try with $COLORTERM first
if (\is_string($colorterm = getenv('COLORTERM'))) {
$colorterm = strtolower($colorterm);
if (str_contains($colorterm, 'truecolor')) {
self::setColorMode(AnsiColorMode::Ansi24);
return self::$colorMode;
}
if (str_contains($colorterm, '256color')) {
self::setColorMode(AnsiColorMode::Ansi8);
return self::$colorMode;
}
}
// Try with $TERM
if (\is_string($term = getenv('TERM'))) {
$term = strtolower($term);
if (str_contains($term, 'truecolor')) {
self::setColorMode(AnsiColorMode::Ansi24);
return self::$colorMode;
}
if (str_contains($term, '256color')) {
self::setColorMode(AnsiColorMode::Ansi8);
return self::$colorMode;
}
}
self::setColorMode(self::DEFAULT_COLOR_MODE);
return self::$colorMode;
}
/**
* Force a terminal color mode rendering.
*/
public static function setColorMode(?AnsiColorMode $colorMode): void
{
self::$colorMode = $colorMode;
}
public function getWidth(): int
{
$width = getenv('COLUMNS');
if (false !== $width) {
return (int) trim($width);
}
if (null === self::$width) {
self::initDimensions();
}
return self::$width ?: 80;
}
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::$stty = (bool) @shell_exec('stty 2> '.('\\' === \DIRECTORY_SEPARATOR ? 'NUL' : '/dev/null'));
}
public static function supportsKittyGraphics(): bool
{
if (null !== self::$kittyGraphics) {
return self::$kittyGraphics;
}
$termProgram = getenv('TERM_PROGRAM') ?: '';
if (\in_array($termProgram, ['kitty', 'WezTerm', 'ghostty'], true)) {
return self::$kittyGraphics = true;
}
if (str_contains(getenv('TERM') ?: '', 'kitty')) {
return self::$kittyGraphics = true;
}
if (false !== getenv('GHOSTTY_RESOURCES_DIR')) {
return self::$kittyGraphics = true;
}
if (false !== getenv('KONSOLE_VERSION')) {
return self::$kittyGraphics = true;
}
return self::$kittyGraphics = false;
}
public static function supportsITerm2Images(): bool
{
if (null !== self::$iterm2Images) {
return self::$iterm2Images;
}
return self::$iterm2Images = 'iTerm.app' === getenv('TERM_PROGRAM');
}
public static function supportsImageProtocol(): bool
{
return self::supportsKittyGraphics() || self::supportsITerm2Images();
}
public static function setKittyGraphicsSupport(?bool $supported): void
{
self::$kittyGraphics = $supported;
}
public static function setITerm2ImagesSupport(?bool $supported): void
{
self::$iterm2Images = $supported;
}
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 (!sapi_windows_vt100_support(fopen('php://stdout', 'w')) && 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) $dimensions[1];
}
} else {
self::initDimensionsUsingStty();
}
}
private static function initDimensionsUsingStty(): void
{
if ($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]];
}
private static function getSttyColumns(): ?string
{
return self::readFromProcess(['stty', '-a']);
}
private static function readFromProcess(string|array $command): ?string
{
if (!\function_exists('proc_open')) {
return null;
}
$descriptorspec = [
1 => ['pipe', 'w'],
2 => ['pipe', 'w'],
];
$cp = \function_exists('sapi_windows_cp_set') ? sapi_windows_cp_get() : 0;
if (!$process = @proc_open($command, $descriptorspec, $pipes, null, null, ['suppress_errors' => true])) {
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;
}
}