--- /dev/null
+<?php
+
+namespace Drupal\advagg\Asset;
+
+use Drupal\Core\Asset\AssetCollectionGrouperInterface;
+use Drupal\Core\Asset\AssetCollectionOptimizerInterface;
+use Drupal\Core\Asset\AssetDumperInterface;
+use Drupal\Core\Asset\AssetOptimizerInterface;
+use Drupal\Core\Asset\CssCollectionOptimizer as CoreCssCollectionOptimizer;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Cache\Cache;
+use Drupal\Core\Config\ConfigFactoryInterface;
+use Drupal\Core\State\StateInterface;
+use Symfony\Component\HttpFoundation\RequestStack;
+
+/**
+ * {@inheritdoc}
+ */
+class CssCollectionOptimizer extends CoreCssCollectionOptimizer implements AssetCollectionOptimizerInterface {
+
+ /**
+ * A config object for the advagg configuration.
+ *
+ * @var \Drupal\Core\Config\Config
+ */
+ protected $config;
+
+ /**
+ * A config object for the system performance configuration.
+ *
+ * @var \Drupal\Core\Config\Config
+ */
+ protected $systemConfig;
+
+ /**
+ * A state information store for the AdvAgg generated aggregates.
+ *
+ * @var \Drupal\Core\State\StateInterface
+ */
+ protected $advaggAggregates;
+
+ /**
+ * Module handler service.
+ *
+ * @var \Drupal\Core\Extension\ModuleHandlerInterface
+ */
+ protected $moduleHandler;
+
+ /**
+ * The AdvAgg file status state information storage service.
+ *
+ * @var \Drupal\Core\State\StateInterface
+ */
+ protected $advaggFiles;
+
+ /**
+ * Hash of the AdvAgg settings.
+ *
+ * @var string
+ */
+ protected $settingsHash;
+
+ /**
+ * The request stack.
+ *
+ * @var \Symfony\Component\HttpFoundation\RequestStack
+ */
+ protected $requestStack;
+
+ /**
+ * {@inheritdoc}
+ *
+ * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
+ * A config factory for retrieving required config objects.
+ * @param \Drupal\Core\State\StateInterface $advagg_aggregates
+ * A state information store for the AdvAgg generated aggregates.
+ * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
+ * The module handler.
+ * @param \Drupal\Core\State\StateInterface $advagg_files
+ * The AdvAgg file status state information storage service.
+ * @param \Symfony\Component\HttpFoundation\RequestStack $request_stack
+ * The request stack.
+ */
+ public function __construct(AssetCollectionGrouperInterface $grouper, AssetOptimizerInterface $optimizer, AssetDumperInterface $dumper, StateInterface $state, ConfigFactoryInterface $config_factory, StateInterface $advagg_aggregates, ModuleHandlerInterface $module_handler, StateInterface $advagg_files, RequestStack $request_stack) {
+ $this->grouper = $grouper;
+ $this->optimizer = $optimizer;
+ $this->dumper = $dumper;
+ $this->state = $state;
+ $this->config = $config_factory->get('advagg.settings');
+ $this->systemConfig = $config_factory->get('system.performance');
+ $this->advaggAggregates = $advagg_aggregates;
+ $this->moduleHandler = $module_handler;
+ $this->advaggFiles = $advagg_files;
+ $this->settingsHash = '_' . advagg_get_current_hooks_hash();
+ $this->requestStack = $request_stack;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function optimize(array $css_assets) {
+ // Group the assets.
+ $css_groups = $this->grouper->group($css_assets);
+
+ // Now optimize (concatenate + minify) and dump each asset group, unless
+ // that was already done, in which case it should appear in
+ // drupal_css_cache_files.
+ // Drupal contrib can override this default CSS aggregator to keep the same
+ // grouping, optimizing and dumping, but change the strategy that is used to
+ // determine when the aggregate should be rebuilt (e.g. mtime, HTTPS …).
+ $css_assets = [];
+ $protocol_relative = $this->config->get('path.convert.absolute_to_protocol_relative');
+ $force_https = $this->config->get('path.convert.force_https');
+ $combine_media = $this->config->get('css.combine_media');
+ $page_uri = $this->requestStack->getCurrentRequest()->getUri();
+ foreach ($css_groups as $order => $css_group) {
+ // We have to return a single asset, not a group of assets. It is now up
+ // to one of the pieces of code in the switch statement below to set the
+ // 'data' property to the appropriate value.
+ $css_assets[$order] = $css_group;
+ unset($css_assets[$order]['items']);
+ switch ($css_group['type']) {
+ case 'file':
+ // No preprocessing, single CSS asset: just use the existing URI.
+ if (!$css_group['preprocess']) {
+ $css_assets[$order]['data'] = $css_group['items'][0]['data'];
+ }
+ // Preprocess (aggregate), unless the aggregate file already exists.
+ else {
+ $key = $this->generateHash($css_group) . $this->settingsHash;
+ $uri = '';
+ if ($aggregate = $this->advaggAggregates->get($key)) {
+ $uri = $aggregate['uri'];
+ $aggregate['basic']['pages'][] = $page_uri;
+ $this->advaggAggregates->set($key, $aggregate);
+ }
+ if (empty($uri) || !file_exists($uri)) {
+ // Optimize each asset within the group.
+ $data = '';
+ $group_file_info = $this->advaggFiles->getMultiple(array_column($css_group['items'], 'data'));
+
+ // Add aggregate & page to advaggFiles store per included file.
+ foreach ($group_file_info as &$file) {
+ $file['aggregates'][] = $key;
+ $file['pages'][] = $page_uri;
+ }
+ if (array_column($group_file_info, 'dns_prefetch')) {
+ $css_assets[$order]['dns_prefetch'] = [];
+ foreach ($group_file_info as $file) {
+ if (!empty($file['dns_prefetch'])) {
+ $css_assets[$order]['dns_prefetch'] = array_merge($css_assets[$order]['dns_prefetch'], $file['dns_prefetch']);
+ }
+ }
+ }
+ foreach ($css_group['items'] as $css_asset) {
+ $content = $this->optimizer->optimize($css_asset);
+ if ($combine_media && isset($css_asset['media']) && $css_asset['media'] != 'all') {
+ $content = '@media ' . $css_asset['media'] . ' {' . $content . '}';
+ }
+
+ // Allow other modules to modify this file's contents.
+ // Call hook_advagg_css_contents_alter().
+ $this->moduleHandler->alter('advagg_css_contents', $content, $css_asset, $group_file_info);
+ $data .= $content;
+ }
+ // Per the W3C specification at
+ // http://www.w3.org/TR/REC-CSS2/cascade.html#at-import, @import
+ // rules must precede any other style, so we move those to the
+ // top.
+ $regexp = '/@import[^;]+;/i';
+ preg_match_all($regexp, $data, $matches);
+ $data = preg_replace($regexp, '', $data);
+ $data = implode('', $matches[0]) . $data;
+ // Dump the optimized CSS for this group into an aggregate file.
+ list($uri, $filename) = $this->dumper->dump($data, 'css');
+ // Set the URI for this group's aggregate file.
+ $css_assets[$order]['data'] = $uri;
+ // Persist the URI for this aggregate file.
+ $aggregate_info = [
+ 'uri' => $uri,
+ 'uid' => $filename,
+ 'basic' => [
+ 'files' => array_keys($css_group['items']),
+ 'pages' => [$page_uri],
+ ],
+ 'detailed' => [
+ 'files' => $css_group['items'],
+ 'hooks_hash' => advagg_current_hooks_hash_array(),
+ ],
+ ];
+ $this->advaggAggregates->set($key, $aggregate_info);
+ }
+ else {
+ // Use the persisted URI for the optimized CSS file.
+ $css_assets[$order]['data'] = $uri;
+ }
+ $css_assets[$order]['preprocessed'] = TRUE;
+ }
+ break;
+
+ case 'external':
+ // We don't do any aggregation and hence also no caching for external
+ // CSS assets.
+ $uri = $css_group['items'][0]['data'];
+ if ($force_https) {
+ $uri = advagg_path_convert_force_https($uri);
+ }
+ elseif ($protocol_relative) {
+ $uri = advagg_path_convert_protocol_relative($uri);
+ }
+ $css_assets[$order]['data'] = $uri;
+ break;
+ }
+ }
+ return $css_assets;
+ }
+
+ /**
+ * Generate a hash for a given group of CSS assets.
+ *
+ * @param array $css_group
+ * A group of CSS assets.
+ *
+ * @return string
+ * A hash to uniquely identify the given group of CSS assets.
+ */
+ protected function generateHash(array $css_group) {
+ $css_data = [];
+ foreach ($css_group['items'] as $css_file) {
+ $css_data[] = $css_file['data'];
+ $css_data[] = filemtime($css_file['data']);
+ }
+ return hash('sha256', serialize($css_data));
+ }
+
+ /**
+ * Deletes all optimized collection assets.
+ *
+ * Note: Core's deleteAll() only deletes old files not all.
+ */
+ public function deleteAllReal() {
+ $log = [];
+ $this->state->delete('system.css_cache_files');
+ Cache::invalidateTags(['library_info']);
+ $delete_all = function ($uri) use (&$log) {
+ file_unmanaged_delete($uri);
+ $log[] = $uri;
+ };
+ $this->state->delete('system.js_cache_files');
+ file_scan_directory($this->dumper->preparePath('css'), '/.*/', ['callback' => $delete_all]);
+ return $log;
+ }
+
+ /**
+ * Delete stale optimized collection assets.
+ */
+ public function deleteStale() {
+ $log = [];
+ $this->state->delete('system.css_cache_files');
+ Cache::invalidateTags(['library_info']);
+ $delete_stale = function ($uri) use (&$log) {
+ // Default stale file threshold is 30 days.
+ if (REQUEST_TIME - fileatime($uri) > $this->systemConfig->get('stale_file_threshold')) {
+ file_unmanaged_delete($uri);
+ $log[] = $uri;
+ }
+ };
+ file_scan_directory($this->dumper->preparePath('css'), '/.*/', ['callback' => $delete_stale]);
+ return $log;
+ }
+
+ /**
+ * Delete old optimized collection assets.
+ */
+ public function deleteOld() {
+ $log = [];
+ $this->state->delete('system.css_cache_files');
+ Cache::invalidateTags(['library_info']);
+ $delete_old = function ($uri) use (&$log) {
+ // Default stale file threshold is 30 days.
+ // Delete old if > 3 times that.
+ if (REQUEST_TIME - filemtime($uri) > $this->systemConfig->get('stale_file_threshold') * 3) {
+ file_unmanaged_delete($uri);
+ $log[] = $uri;
+ }
+ };
+ file_scan_directory($this->dumper->preparePath('css'), '/.*/', ['callback' => $delete_old]);
+ return $log;
+ }
+
+}
projects / yaffs-website / blobdiff