Discourse addon created
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NSFW
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"Not safe for work"
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Scans the message content for the string 'nsfw'
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(case insensitive) and if found replaces the content
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with a "click to open/close" link, default is closed.
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If you click on the 'Not safe for work' addon under
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/settings/addon a text field appears, where you can
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extend the list of search terms. The terms must be
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seperated by commas.
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It is also possible to enter profile URLs as values.
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This is quite useful for the case, that you perhaps
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don't want to see postings by person_A, but person_B
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is one of your contacts and person_B used to reshare
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postings by person_A.
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You can also make use of regular expressions.
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They also have to be seperated by commas and the
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regex itself has to be enclosed with slashes:
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... nsfw, /<REGEX>/, politics,...
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---------------
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A few examples:
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---------------
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1)
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Let's say you don't want to see postings which contain
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the term 'fake news'
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The term could appear in several ways:
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fakenews, fake news, fake_news, fake-news, f@ke news,
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f4ke news, f4k3 n3ws, and so on and so on and so on.
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You could write every possible version of it as single
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item into your NSFW-filter list, but this can also be
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done with a single regex, which matches all of them:
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/f[@4a]k[3e][-_ ]n[3e]w[sz]/
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2)
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Another use case could be, that you are simply not
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interested in postings about christmas.
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/christmas(?:[-_ ]?(?:tree|time|eve|pudding))?/
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ATTENTION:
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It is absolutely important, that you use grouping
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parentheses instead of capturing parentheses!!
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Grouping parentheses are:
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(?: )
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If you use capturing parentheses, which are
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( )
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it will produce errors and the regex won't work and
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at least your targets will not get collapsed.
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3)
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Another possibility is the usage of a so called
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'lookbehind' construct. I'll give an example followed
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by a descripton:
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/(?<!the )\badvent\b/
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The \b is a word boundary, what matches the beginning
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and the end of a word. The simple pattern of 'advent'
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would match advent iteself, but also adventure.
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This can be prevented by
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/\badvent\b/
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The first part of the regex above
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(?<!the )
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is a negative lookbehind. It makes \badvent\b only
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match, if there is no 'the ' before \badvent\b or in
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words:
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It looks for 'advent', but doesn't match 'the advent'.
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For more informations take a look at the PCRE regex
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dialect.
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@ -0,0 +1,224 @@
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<?php
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/**
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* Name: Discourse Mail Connector
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* Description: Improves mails from Discourse in mailing list mode
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* Version: 0.1
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* Author: Michael Vogel <http://pirati.ca/profile/heluecht>
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*
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*/
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//use DOMDocument;
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//use DOMXPath;
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use Friendica\App;
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use Friendica\Core\Hook;
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use Friendica\Core\L10n;
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use Friendica\Core\Logger;
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use Friendica\Core\PConfig;
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use Friendica\Util\XML;
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use Friendica\Content\Text\Markdown;
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use Friendica\Util\Network;
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Use Friendica\Util\DateTimeFormat;
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function discourse_install()
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{
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Hook::register('email_getmessage', __FILE__, 'discourse_email_getmessage');
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Hook::register('email_getmessage_end', __FILE__, 'discourse_email_getmessage_end');
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Hook::register('addon_settings', __FILE__, 'discourse_addon_settings');
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Hook::register('addon_settings_post', __FILE__, 'discourse_addon_settings_post');
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}
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function discourse_uninstall()
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{
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Hook::unregister('email_getmessage', __FILE__, 'discourse_email_getmessage');
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Hook::unregister('email_getmessage_end', __FILE__, 'discourse_email_getmessage_end');
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Hook::unregister('addon_settings', __FILE__, 'discourse_addon_settings');
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Hook::unregister('addon_settings_post', __FILE__, 'discourse_addon_settings_post');
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}
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function discourse_addon_settings(App $a, &$s)
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{
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}
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function discourse_addon_settings_post(App $a)
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{
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}
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function discourse_email_getmessage(App $a, &$message)
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{
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// Logger::info('Got raw message', $message);
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// Remove the title on comments, they don't serve any purpose there
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if ($message['item']['parent-uri'] != $message['item']['uri']) {
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unset($message['item']['title']);
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}
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if (preg_match('=topic/(.*)/(.*)@(.*)=', $message['item']['uri'], $matches)) {
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Logger::info('Got post data', ['topic' => $matches[1], 'post' => $matches[2], 'host' => $matches[3]]);
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if (discourse_fetch_post_from_api($message, $matches[2], $matches[3])) {
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return;
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}
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}
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// Search in the text part for the link to the discourse entry and the text body
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// The text body is used as alternative, if the fetched HTML isn't working
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if (!empty($message['text'])) {
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discourse_get_text($message);
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}
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if (!empty($message['item']['plink'])) {
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if (preg_match('=(http.*)/t/.*/(.*\d)/(.*\d)=', $message['item']['plink'], $matches)) {
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if (discourse_fetch_topic_from_api($message, $matches[1], $matches[1], $matches[1])) {
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return;
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}
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}
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}
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// Search in the HTML part for the discourse entry and the author profile
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if (!empty($message['html'])) {
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discourse_get_html($message);
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}
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}
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function discourse_fetch_topic_from_api(&$message, $host, $topic, $pid)
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{
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$url = $host . '/t/' . $topic . '/posts.json?posts_ids[]=' . $pid;
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$curlResult = Network::curl($url);
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if (!$curlResult->isSuccess()) {
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return false;
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}
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$raw = $curlResult->getBody();
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$data = json_decode($raw, true);
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$posts = $data['post_stream']['posts'];
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foreach($posts as $post) {
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if ($post['post_number'] != $pid) {
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continue;
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}
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Logger::info('Got post data from topic', $post);
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discourse_process_post($message, $post);
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return true;
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}
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return false;
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}
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function discourse_fetch_post_from_api(&$message, $post, $host)
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{
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$url = "https://" . $host . '/posts/' . $post . '.json';
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$curlResult = Network::curl($url);
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if (!$curlResult->isSuccess()) {
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return false;
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}
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$raw = $curlResult->getBody();
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$data = json_decode($raw, true);
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if (empty($data)) {
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return false;
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}
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discourse_process_post($message, $data);
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Logger::info('Got API data', $message);
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return true;
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}
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function discourse_process_post(&$message, $post)
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{
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if ($post['post_number'] == 1) {
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// Thread information
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}
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$nick = $post['username'];
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$name = $post['name'];
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// User information
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$message['html'] = $post['cooked'];
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$message['text'] = $post['raw'];
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$message['item']['created'] = DateTimeFormat::utc($post['created_at']);
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}
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function discourse_get_html(&$message)
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{
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$doc = new DOMDocument();
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$doc2 = new DOMDocument();
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$doc->preserveWhiteSpace = false;
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$html = mb_convert_encoding($message['html'], 'HTML-ENTITIES', "UTF-8");
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@$doc->loadHTML($html, LIBXML_HTML_NODEFDTD);
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$xpath = new DomXPath($doc);
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// Fetch the first 'div' before the 'hr' -hopefully this fits for all systems
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$result = $xpath->query("//hr//preceding::div[1]");
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$div = $doc2->importNode($result->item(0), true);
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$doc2->appendChild($div);
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$message['html'] = $doc2->saveHTML();
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Logger::info('Found html body', ['html' => $message['html']]);
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$profile = discourse_get_profile($xpath);
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if (!empty($profile)) {
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Logger::info('Found profile', $profile);
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/*
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$message['item']['author-avatar'] = $contact['avatar'];
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$message['item']['author-link'] = $profile['link'];
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$message['item']['author-name'] = $profile['name'];
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*/
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}
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}
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function discourse_get_text(&$message)
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{
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$text = $message['text'];
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$text = str_replace("\r", '', $text);
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$pos = strpos($text, "\n---\n");
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if ($pos > 0) {
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$message['text'] = trim(substr($text, 0, $pos));
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Logger::info('Found text body', ['text' => $message['text']]);
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$message['text'] = Markdown::toBBCode($message['text']);
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$text = substr($text, $pos);
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if (preg_match('=\((http.*?)\)=', $text, $link)) {
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$message['item']['plink'] = $link[1];
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Logger::info('Found plink', ['plink' => $message['item']['plink']]);
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}
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} else {
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Logger::info('No separator found', ['text' => $text]);
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}
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}
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function discourse_get_profile($xpath)
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{
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$profile = [];
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$list = $xpath->query("//td//following::img");
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foreach ($list as $node) {
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$attr = [];
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foreach ($node->attributes as $attribute) {
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$attr[$attribute->name] = $attribute->value;
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}
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if (!empty($attr['src']) && !empty($attr['title'])
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&& !empty($attr['width']) && !empty($attr['height'])
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&& ($attr['width'] == $attr['height'])) {
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$profile = ['avatar' => $attr['src'], 'name' => $attr['title']];
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break;
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}
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}
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$list = $xpath->query("//td//following::a");
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foreach ($list as $node) {
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if (!empty(trim($node->textContent)) && $node->attributes->length) {
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$attr = [];
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foreach ($node->attributes as $attribute) {
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$attr[$attribute->name] = $attribute->value;
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}
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if (!empty($attr['href']) && (strpos($attr['href'], '/' . $profile['name']))) {
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$profile['link'] = $attr['href'];
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break;
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}
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}
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}
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return $profile;
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}
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function discourse_email_getmessage_end(App $a, &$message)
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{
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// Logger::info('Got converted message', $message);
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}
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