| /vendor/symfony/process/Pipes/AbstractPipes.php |
|---|
| @@ -0,0 +1,169 @@ |
|---|
| <?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\Process\Pipes; |
| |
| use Symfony\Component\Process\Exception\InvalidArgumentException; |
| |
| /** |
| * @author Romain Neutron <imprec@gmail.com> |
| * |
| * @internal |
| */ |
| abstract class AbstractPipes implements PipesInterface |
| { |
| /** @var array */ |
| public $pipes = array(); |
| |
| /** @var string */ |
| private $inputBuffer = ''; |
| /** @var resource|scalar|\Iterator|null */ |
| private $input; |
| /** @var bool */ |
| private $blocked = true; |
| |
| public function __construct($input) |
| { |
| if (is_resource($input) || $input instanceof \Iterator) { |
| $this->input = $input; |
| } elseif (is_string($input)) { |
| $this->inputBuffer = $input; |
| } else { |
| $this->inputBuffer = (string) $input; |
| } |
| } |
| |
| /** |
| * {@inheritdoc} |
| */ |
| public function close() |
| { |
| foreach ($this->pipes as $pipe) { |
| fclose($pipe); |
| } |
| $this->pipes = array(); |
| } |
| |
| /** |
| * Returns true if a system call has been interrupted. |
| * |
| * @return bool |
| */ |
| protected function hasSystemCallBeenInterrupted() |
| { |
| $lastError = error_get_last(); |
| |
| // stream_select returns false when the `select` system call is interrupted by an incoming signal |
| return isset($lastError['message']) && false !== stripos($lastError['message'], 'interrupted system call'); |
| } |
| |
| /** |
| * Unblocks streams. |
| */ |
| protected function unblock() |
| { |
| if (!$this->blocked) { |
| return; |
| } |
| |
| foreach ($this->pipes as $pipe) { |
| stream_set_blocking($pipe, 0); |
| } |
| if (is_resource($this->input)) { |
| stream_set_blocking($this->input, 0); |
| } |
| |
| $this->blocked = false; |
| } |
| |
| /** |
| * Writes input to stdin. |
| * |
| * @throws InvalidArgumentException When an input iterator yields a non supported value |
| */ |
| protected function write() |
| { |
| if (!isset($this->pipes[0])) { |
| return; |
| } |
| $input = $this->input; |
| |
| if ($input instanceof \Iterator) { |
| if (!$input->valid()) { |
| $input = null; |
| } elseif (is_resource($input = $input->current())) { |
| stream_set_blocking($input, 0); |
| } elseif (!isset($this->inputBuffer[0])) { |
| if (!is_string($input)) { |
| if (!is_scalar($input)) { |
| throw new InvalidArgumentException(sprintf('%s yielded a value of type "%s", but only scalars and stream resources are supported', get_class($this->input), gettype($input))); |
| } |
| $input = (string) $input; |
| } |
| $this->inputBuffer = $input; |
| $this->input->next(); |
| $input = null; |
| } else { |
| $input = null; |
| } |
| } |
| |
| $r = $e = array(); |
| $w = array($this->pipes[0]); |
| |
| // let's have a look if something changed in streams |
| if (false === $n = @stream_select($r, $w, $e, 0, 0)) { |
| return; |
| } |
| |
| foreach ($w as $stdin) { |
| if (isset($this->inputBuffer[0])) { |
| $written = fwrite($stdin, $this->inputBuffer); |
| $this->inputBuffer = substr($this->inputBuffer, $written); |
| if (isset($this->inputBuffer[0])) { |
| return array($this->pipes[0]); |
| } |
| } |
| |
| if ($input) { |
| for (;;) { |
| $data = fread($input, self::CHUNK_SIZE); |
| if (!isset($data[0])) { |
| break; |
| } |
| $written = fwrite($stdin, $data); |
| $data = substr($data, $written); |
| if (isset($data[0])) { |
| $this->inputBuffer = $data; |
| |
| return array($this->pipes[0]); |
| } |
| } |
| if (feof($input)) { |
| if ($this->input instanceof \Iterator) { |
| $this->input->next(); |
| } else { |
| $this->input = null; |
| } |
| } |
| } |
| } |
| |
| // no input to read on resource, buffer is empty |
| if (!isset($this->inputBuffer[0]) && !($this->input instanceof \Iterator ? $this->input->valid() : $this->input)) { |
| $this->input = null; |
| fclose($this->pipes[0]); |
| unset($this->pipes[0]); |
| } elseif (!$w) { |
| return array($this->pipes[0]); |
| } |
| } |
| } |
