protected function LibraryDiscoveryCollector::getLibraryDefinitions in Drupal 8

Same name and namespace in other branches

1. 9 core/lib/Drupal/Core/Asset/LibraryDiscoveryCollector.php \Drupal\Core\Asset\LibraryDiscoveryCollector::getLibraryDefinitions()

Returns the library definitions for a given extension.

This also implements libraries-overrides for entire libraries that have been specified by the LibraryDiscoveryParser.

Parameters

string $extension: The name of the extension for which library definitions will be returned.

Return value

array The library definitions for $extension with overrides applied.

Throws

\Drupal\Core\Asset\Exception\InvalidLibrariesOverrideSpecificationException

1 call to LibraryDiscoveryCollector::getLibraryDefinitions()

LibraryDiscoveryCollector::resolveCacheMiss in core/lib/Drupal/Core/Asset/LibraryDiscoveryCollector.php

Resolves a cache miss.

File

core/lib/Drupal/Core/Asset/LibraryDiscoveryCollector.php, line 86

Class

LibraryDiscoveryCollector

A CacheCollector implementation for building library extension info.

Namespace

Drupal\Core\Asset

Code

protected function getLibraryDefinitions($extension) {
  $libraries = $this->discoveryParser
    ->buildByExtension($extension);
  foreach ($libraries as $name => $definition) {

    // Handle libraries that are marked for override or removal.
    // @see \Drupal\Core\Asset\LibraryDiscoveryParser::applyLibrariesOverride()
    if (isset($definition['override'])) {
      if ($definition['override'] === FALSE) {

        // Remove the library definition if FALSE is given.
        unset($libraries[$name]);
      }
      else {

        // Otherwise replace with existing library definition if it exists.
        // Throw an exception if it doesn't.
        list($replacement_extension, $replacement_name) = explode('/', $definition['override']);
        $replacement_definition = $this
          ->get($replacement_extension);
        if (isset($replacement_definition[$replacement_name])) {
          $libraries[$name] = $replacement_definition[$replacement_name];
        }
        else {
          throw new InvalidLibrariesOverrideSpecificationException(sprintf('The specified library %s does not exist.', $definition['override']));
        }
      }
    }
    else {

      // If libraries are not overridden, then apply libraries-extend.
      $libraries[$name] = $this
        ->applyLibrariesExtend($extension, $name, $definition);
    }
  }
  return $libraries;
}