public function AppendStream::seek in Zircon Profile 8.0

Same name and namespace in other branches

1. 8 vendor/guzzlehttp/psr7/src/AppendStream.php \GuzzleHttp\Psr7\AppendStream::seek()

Attempts to seek to the given position. Only supports SEEK_SET.

Overrides StreamInterface::seek

1 call to AppendStream::seek()

AppendStream::rewind in vendor/guzzlehttp/psr7/src/AppendStream.php

Seek to the beginning of the stream.

File

vendor/guzzlehttp/psr7/src/AppendStream.php, line 140

Class

AppendStream

Reads from multiple streams, one after the other.

Namespace

GuzzleHttp\Psr7

Code

public function seek($offset, $whence = SEEK_SET) {
  if (!$this->seekable) {
    throw new \RuntimeException('This AppendStream is not seekable');
  }
  elseif ($whence !== SEEK_SET) {
    throw new \RuntimeException('The AppendStream can only seek with SEEK_SET');
  }
  $this->pos = $this->current = 0;

  // Rewind each stream
  foreach ($this->streams as $i => $stream) {
    try {
      $stream
        ->rewind();
    } catch (\Exception $e) {
      throw new \RuntimeException('Unable to seek stream ' . $i . ' of the AppendStream', 0, $e);
    }
  }

  // Seek to the actual position by reading from each stream
  while ($this->pos < $offset && !$this
    ->eof()) {
    $result = $this
      ->read(min(8096, $offset - $this->pos));
    if ($result === '') {
      break;
    }
  }
}