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Direktori : /home2/selectio/public_html/myclassicfit.com/vendor/symfony/process/Pipes/ |
Current File : //home2/selectio/public_html/myclassicfit.com/vendor/symfony/process/Pipes/AbstractPipes.php |
<?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 { public $pipes = []; private $inputBuffer = ''; private $input; private $blocked = true; private $lastError; /** * @param resource|string|int|float|bool|\Iterator|null $input */ public function __construct($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 $pipe) { if (\is_resource($pipe)) { fclose($pipe); } } $this->pipes = []; } /** * Returns true if a system call has been interrupted. */ protected function hasSystemCallBeenInterrupted(): bool { $lastError = $this->lastError; $this->lastError = null; // stream_select returns false when the `select` system call is interrupted by an incoming signal return null !== $lastError && false !== stripos($lastError, '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); } $this->blocked = false; } /** * Writes input to stdin. * * @throws InvalidArgumentException When an input iterator yields a non supported value */ protected function write(): ?array { if (!isset($this->pipes[0])) { return null; } $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($input)) { throw new InvalidArgumentException(sprintf('"%s" yielded a value of type "%s", but only scalars and stream resources are supported.', get_debug_type($this->input), get_debug_type($input))); } $input = (string) $input; } $this->inputBuffer = $input; $this->input->next(); $input = null; } else { $input = null; } } $r = $e = []; $w = [$this->pipes[0]]; // let's have a look if something changed in streams if (false === @stream_select($r, $w, $e, 0, 0)) { return null; } foreach ($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 [$this->pipes[0]]; } } if ($input) { while (true) { $data = fread($input, self::CHUNK_SIZE); if (!isset($data[0])) { break; } $written = fwrite($stdin, $data); $data = substr($data, $written); if (isset($data[0])) { $this->inputBuffer = $data; return [$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 [$this->pipes[0]]; } return null; } /** * @internal */ public function handleError(int $type, string $msg) { $this->lastError = $msg; } }