public function OptiPngFilter::filterDump

Filters an asset just before it's dumped.

Parameters

AssetInterface $asset An asset:

Overrides FilterInterface::filterDump

File

drupal/core/vendor/kriswallsmith/assetic/src/Assetic/Filter/OptiPngFilter.php, line 47

Class

OptiPngFilter

Runs assets through OptiPNG.

Namespace

Code

public function filterDump(AssetInterface $asset) {
  $pb = $this
    ->createProcessBuilder(array(
    $this->optipngBin,
  ));
  if (null !== $this->level) {
    $pb
      ->add('-o')
      ->add($this->level);
  }
  $pb
    ->add('-out')
    ->add($output = tempnam(sys_get_temp_dir(), 'assetic_optipng'));
  unlink($output);
  $pb
    ->add($input = tempnam(sys_get_temp_dir(), 'assetic_optipng'));
  file_put_contents($input, $asset
    ->getContent());
  $proc = $pb
    ->getProcess();
  $code = $proc
    ->run();
  if (0 !== $code) {
    unlink($input);
    throw FilterException::fromProcess($proc)
      ->setInput($asset
      ->getContent());
  }
  $asset
    ->setContent(file_get_contents($output));
  unlink($input);
  unlink($output);
}