/**
* {@inheritdoc}
*/
public function filterContent(AssetInterface $asset)
{
// has path?
if (!($path = $asset->getOption('path'))) {
return;
}
// set base path
$this->path = dirname($this->url->to($path)) . '/';
$asset->setContent(preg_replace_callback('/url\\(\\s*[\'"]?(?![a-z]+:|\\/+)([^\'")]+)[\'"]?\\s*\\)/i', array($this, 'rewrite'), $asset->getContent()));
}
/**
* {@inheritdoc}
*/
public function filterContent(AssetInterface $asset)
{
// has path?
if (!$asset['path']) {
return;
}
// resolve @import rules
$content = $this->load($asset['path'], $asset->getContent());
// move unresolved @import rules to the top
$comments = array();
$regexp = '/@import[^;]+;/i';
$content = $this->replaceComments($content, $comments);
if (preg_match_all($regexp, $content, $matches)) {
$content = preg_replace($regexp, '', $content);
$content = implode("\n", $matches[0]) . "\n" . $content;
}
$content = $this->restoreComments($content, $comments);
$asset->setContent($content);
}
/**
* {@inheritdoc}
*/
public function filterContent(AssetInterface $asset)
{
$images = array();
$content = $asset->getContent();
// get images and the related path
if (preg_match_all('/url\\(\\s*[\'"]?([^\'"]+)[\'"]?\\s*\\)/Ui', $asset->getContent(), $matches)) {
foreach ($matches[0] as $i => $url) {
if (strpos($path = $matches[1][$i], $this->baseUrl) !== 0) {
continue;
}
if ($path = realpath($this->basePath . '/' . ltrim(substr($path, strlen($this->baseUrl)), '/'))) {
$images[$url] = $path;
}
}
}
// check if image exists and filesize < 10kb
foreach ($images as $url => $path) {
if (filesize($path) <= 10240 && preg_match('/\\.(gif|png|jpg)$/i', $path, $extension)) {
$content = str_replace($url, sprintf('url(data:image/%s;base64,%s)', str_replace('jpg', 'jpeg', strtolower($extension[1])), base64_encode(file_get_contents($path))), $content);
}
}
$asset->setContent($content);
}
/**
* Resolves asset dependencies.
*
* @param AssetInterface $asset
* @param AssetInterface[] $resolved
* @param AssetInterface[] $unresolved
* @return AssetInterface[]
* @throws \RuntimeException
*/
public function resolveDependencies($asset, &$resolved = array(), &$unresolved = array())
{
$unresolved[$asset->getName()] = $asset;
foreach ($asset->getDependencies() as $dependency) {
if (!isset($resolved[$dependency])) {
if (isset($unresolved[$dependency])) {
throw new \RuntimeException(sprintf('Circular asset dependency "%s > %s" detected.', $asset->getName(), $dependency));
}
if ($d = $this->registered->get($dependency)) {
$this->resolveDependencies($d, $resolved, $unresolved);
}
}
}
$resolved[$asset->getName()] = $asset;
unset($unresolved[$asset->getName()]);
return $resolved;
}
/**
* {@inheritdoc}
*/
public function filterContent(AssetInterface $asset)
{
$asset->setContent($this->process($asset->getContent()));
}