+ return $title;
+ }
+
+ /**
+ * Remove invalid UTF-8 characters from the given string.
+ *
+ * @param string $rawText
+ *
+ * @return string
+ */
+ private function sanitizeUTF8Text($rawText)
+ {
+ if (mb_check_encoding($rawText, 'UTF-8')) {
+ return $rawText;
+ }
+
+ return iconv('UTF-8', 'UTF-8//IGNORE', $rawText);
+ }
+
+ /**
+ * Stock entry with fetched or imported content.
+ * Will fall back to OpenGraph data if available.
+ *
+ * @param Entry $entry Entry to stock
+ * @param array $content Array with at least title, url & html
+ */
+ private function stockEntry(Entry $entry, array $content)
+ {
+ $this->updateOriginUrl($entry, $content['url']);
+
+ $this->setEntryDomainName($entry);
+
+ if (!empty($content['title'])) {
+ $entry->setTitle($content['title']);
+ } elseif (!empty($content['open_graph']['og_title'])) {
+ $entry->setTitle($content['open_graph']['og_title']);
+ }
+
+ if (empty($content['html'])) {
+ $content['html'] = $this->fetchingErrorMessage;
+
+ if (!empty($content['open_graph']['og_description'])) {
+ $content['html'] .= '<p><i>But we found a short description: </i></p>';
+ $content['html'] .= $content['open_graph']['og_description'];
+ }
+ }
+
+ $entry->setContent($content['html']);
+ $entry->setReadingTime(Utils::getReadingTime($content['html']));
+
+ if (!empty($content['status'])) {
+ $entry->setHttpStatus($content['status']);
+ }
+
+ if (!empty($content['authors']) && \is_array($content['authors'])) {
+ $entry->setPublishedBy($content['authors']);
+ }
+
+ if (!empty($content['all_headers']) && $this->storeArticleHeaders) {
+ $entry->setHeaders($content['all_headers']);
+ }
+
+ if (!empty($content['date'])) {
+ $this->updatePublishedAt($entry, $content['date']);
+ }
+
+ if (!empty($content['language'])) {
+ $this->updateLanguage($entry, $content['language']);
+ }
+
+ if (!empty($content['open_graph']['og_image'])) {
+ $this->updatePreviewPicture($entry, $content['open_graph']['og_image']);
+ }
+
+ // if content is an image, define it as a preview too
+ if (!empty($content['content_type']) && \in_array($this->mimeGuesser->guess($content['content_type']), ['jpeg', 'jpg', 'gif', 'png'], true)) {
+ $this->updatePreviewPicture($entry, $content['url']);
+ }
+
+ if (!empty($content['content_type'])) {
+ $entry->setMimetype($content['content_type']);
+ }
+
+ try {
+ $this->tagger->tag($entry);
+ } catch (\Exception $e) {
+ $this->logger->error('Error while trying to automatically tag an entry.', [
+ 'entry_url' => $content['url'],
+ 'error_msg' => $e->getMessage(),
+ ]);
+ }
+ }
+
+ /**
+ * Update the origin_url field when a redirection occurs
+ * This field is set if it is empty and new url does not match ignore list.
+ *
+ * @param Entry $entry
+ * @param string $url
+ */
+ private function updateOriginUrl(Entry $entry, $url)
+ {
+ if (empty($url) || $entry->getUrl() === $url) {
+ return false;
+ }
+
+ $parsed_entry_url = parse_url($entry->getUrl());
+ $parsed_content_url = parse_url($url);
+
+ /**
+ * The following part computes the list of part changes between two
+ * parse_url arrays.
+ *
+ * As array_diff_assoc only computes changes to go from the left array
+ * to the right one, we make two differents arrays to have both
+ * directions. We merge these two arrays and sort keys before passing
+ * the result to the switch.
+ *
+ * The resulting array gives us all changing parts between the two
+ * urls: scheme, host, path, query and/or fragment.
+ */
+ $diff_ec = array_diff_assoc($parsed_entry_url, $parsed_content_url);
+ $diff_ce = array_diff_assoc($parsed_content_url, $parsed_entry_url);
+
+ $diff = array_merge($diff_ec, $diff_ce);
+ $diff_keys = array_keys($diff);
+ sort($diff_keys);
+
+ if ($this->ignoreUrl($entry->getUrl())) {
+ $entry->setUrl($url);
+
+ return false;
+ }
+
+ /**
+ * This switch case lets us apply different behaviors according to
+ * changing parts of urls.
+ *
+ * As $diff_keys is an array, we provide arrays as cases. ['path'] means
+ * 'only the path is different between the two urls' whereas
+ * ['fragment', 'query'] means 'only fragment and query string parts are
+ * different between the two urls'.
+ *
+ * Note that values in $diff_keys are sorted.
+ */
+ switch ($diff_keys) {
+ case ['path']:
+ if (($parsed_entry_url['path'] . '/' === $parsed_content_url['path']) // diff is trailing slash, we only replace the url of the entry
+ || ($url === urldecode($entry->getUrl()))) { // we update entry url if new url is a decoded version of it, see EntryRepository#findByUrlAndUserId
+ $entry->setUrl($url);
+ }
+ break;
+ case ['scheme']:
+ $entry->setUrl($url);
+ break;
+ case ['fragment']:
+ // noop
+ break;
+ default:
+ if (empty($entry->getOriginUrl())) {
+ $entry->setOriginUrl($entry->getUrl());
+ }
+ $entry->setUrl($url);
+ break;
+ }
+ }
+
+ /**
+ * Check entry url against an ignore list to replace with content url.
+ *
+ * XXX: move the ignore list in the database to let users handle it
+ *
+ * @param string $url url to test
+ *
+ * @return bool true if url matches ignore list otherwise false
+ */
+ private function ignoreUrl($url)
+ {
+ $ignored_hosts = ['feedproxy.google.com', 'feeds.reuters.com'];
+ $ignored_patterns = ['https?://www\.lemonde\.fr/tiny.*'];
+
+ $parsed_url = parse_url($url);
+
+ $filtered = array_filter($ignored_hosts, function ($var) use ($parsed_url) {
+ return $var === $parsed_url['host'];
+ });
+
+ if ([] !== $filtered) {
+ return true;
+ }
+
+ $filtered = array_filter($ignored_patterns, function ($var) use ($url) {
+ return preg_match("`$var`i", $url);
+ });
+
+ if ([] !== $filtered) {
+ return true;
+ }
+
+ return false;
+ }
+
+ /**
+ * Validate that the given content has at least a title, an html and a url.
+ *
+ * @param array $content
+ *
+ * @return bool true if valid otherwise false
+ */
+ private function validateContent(array $content)
+ {
+ return !empty($content['title']) && !empty($content['html']) && !empty($content['url']);