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