public function getAssets($resource, $previousContext = null)
{
if (!is_string($resource)) {
throw new InvalidResourceException('Expected string filename as resource', $resource);
} elseif (!is_file($resource) || !is_readable($resource) || !stream_is_local($resource)) {
throw new InvalidResourceException('File not found, not readable or not local', $resource);
}
if ($previousContext !== null) {
if (!is_array($previousContext) || !isset($previousContext['modified_at']) || !is_int($previousContext['modified_at']) || !isset($previousContext['assets']) || !is_array($previousContext['assets'])) {
throw new InvalidContextException('Expected context with int `modified_at` and array `assets`', $previousContext);
}
if ($previousContext['modified_at'] === filemtime($resource)) {
$assetResult = new AssetResult();
$assetResult->setAssets($previousContext['assets']);
$assetResult->setContext($previousContext);
return $assetResult;
}
}
try {
$tokens = $this->twig->tokenize(file_get_contents($resource), $resource);
$node = $this->twig->parse($tokens);
} catch (SyntaxException $exception) {
$this->errorHandler->processException(new ResourceParsingException('Got twig syntax exception while parsing', 0, $exception));
return new AssetResult();
}
$assets = $this->loadNode($node, $resource);
$assetResult = new AssetResult();
$assetResult->setAssets($assets);
$assetResult->setContext(array('modified_at' => filemtime($resource), 'assets' => $assets));
return $assetResult;
}
public function getAssets($resource, $previousContext = null)
{
$internalResources = array();
foreach ($this->collectionResource->getInternalResources($resource) as $internalResource) {
$internalResourceKey = json_encode($internalResource);
$internalResources[$internalResourceKey] = $internalResource;
}
$result = new AssetResult();
$context = array();
$internalContexts = $this->getResourceContexts(array_keys($internalResources), $previousContext);
foreach ($internalResources as $internalResourceKey => $internalResource) {
$internalContext = isset($internalContexts[$internalResourceKey]) ? $internalContexts[$internalResourceKey] : null;
$internalResult = $this->internalResourceProvider->getAssets($internalResource, $internalContext);
$result->addAssets($internalResult->getAssets());
$context[$internalResourceKey] = $internalResult->getContext();
}
$result->setContext($context);
return $result;
}
