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<?php
namespace PhpSchool\Terminal\IO;
use function is_resource;
use function get_resource_type;
use function stream_get_meta_data;
use function strpos;
/**
* @author Aydin Hassan <[email protected]>
*/
class ResourceInputStream implements InputStream
{
* @var resource
private $stream;
public function __construct($stream = \STDIN)
if (!is_resource($stream) || get_resource_type($stream) !== 'stream') {
throw new \InvalidArgumentException('Expected a valid stream');
}
$meta = stream_get_meta_data($stream);
if (strpos($meta['mode'], 'r') === false && strpos($meta['mode'], '+') === false) {
throw new \InvalidArgumentException('Expected a readable stream');
$this->stream = $stream;
public function read(int $numBytes, callable $callback) : void
$meta = stream_get_meta_data($this->stream);
if ($meta['blocked'] && ($meta['unread_bytes'] > 0)) {
stream_set_blocking($this->stream, false);
$buffer = fread($this->stream, $numBytes);
stream_set_blocking($this->stream, true);
$callback($buffer);
* Whether the stream is connected to an interactive terminal
public function isInteractive() : bool
return posix_isatty($this->stream);
php-school /
terminal
