An unofficial mirror of the Tiny Tiny RSS, an open-source RSS feed reader and aggregator https://git.tt-rss.org/fox/tt-rss
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tt-rss/plugins/af_readability/init.php

254 lines
6.4 KiB

<?php
use andreskrey\Readability\Readability;
use andreskrey\Readability\Configuration;
class Af_Readability extends Plugin {
/* @var PluginHost $host */
private $host;
function about() {
return array(1.0,
"Try to inline article content using Readability",
"fox");
}
function flags() {
return array("needs_curl" => true);
}
function save() {
$enable_share_anything = checkbox_to_sql_bool($_POST["enable_share_anything"]);
$this->host->set($this, "enable_share_anything", $enable_share_anything);
echo __("Data saved.");
}
function init($host)
{
$this->host = $host;
if (version_compare(PHP_VERSION, '5.6.0', '<')) {
return;
}
$host->add_hook($host::HOOK_ARTICLE_FILTER, $this);
$host->add_hook($host::HOOK_PREFS_TAB, $this);
$host->add_hook($host::HOOK_PREFS_EDIT_FEED, $this);
$host->add_hook($host::HOOK_PREFS_SAVE_FEED, $this);
$host->add_filter_action($this, "action_inline", __("Inline content"));
}
function hook_prefs_tab($args) {
if ($args != "prefFeeds") return;
print "<div dojoType=\"dijit.layout.AccordionPane\" title=\"".__('Readability settings (af_readability)')."\">";
if (version_compare(PHP_VERSION, '5.6.0', '<')) {
print_error("This plugin requires PHP version 5.6.");
}
print_notice("Enable the plugin for specific feeds in the feed editor.");
print "<form dojoType=\"dijit.form.Form\">";
print "<script type=\"dojo/method\" event=\"onSubmit\" args=\"evt\">
evt.preventDefault();
if (this.validate()) {
console.log(dojo.objectToQuery(this.getValues()));
new Ajax.Request('backend.php', {
parameters: dojo.objectToQuery(this.getValues()),
onComplete: function(transport) {
Notify.info(transport.responseText);
}
});
//this.reset();
}
</script>";
print_hidden("op", "pluginhandler");
print_hidden("method", "save");
print_hidden("plugin", "af_readability");
$enable_share_anything = $this->host->get($this, "enable_share_anything");
print_checkbox("enable_share_anything", $enable_share_anything);
print "&nbsp;<label for=\"enable_share_anything\">" . __("Use Readability for pages shared via bookmarklet.") . "</label>";
print "<p>"; print_button("submit", __("Save"));
print "</form>";
$enabled_feeds = $this->host->get($this, "enabled_feeds");
if (!is_array($enabled_feeds)) $enabled_feeds = array();
$enabled_feeds = $this->filter_unknown_feeds($enabled_feeds);
$this->host->set($this, "enabled_feeds", $enabled_feeds);
if (count($enabled_feeds) > 0) {
print "<h3>" . __("Currently enabled for (click to edit):") . "</h3>";
print "<ul class=\"browseFeedList\" style=\"border-width : 1px\">";
foreach ($enabled_feeds as $f) {
print "<li>" .
"<img src='images/pub_set.png'
style='vertical-align : middle'> <a href='#'
onclick='CommonDialogs.editFeed($f)'>".
Feeds::getFeedTitle($f) . "</a></li>";
}
print "</ul>";
}
print "</div>";
}
function hook_prefs_edit_feed($feed_id) {
print "<div class=\"dlgSec\">".__("Readability")."</div>";
print "<div class=\"dlgSecCont\">";
$enabled_feeds = $this->host->get($this, "enabled_feeds");
if (!is_array($enabled_feeds)) $enabled_feeds = array();
$key = array_search($feed_id, $enabled_feeds);
$checked = $key !== FALSE ? "checked" : "";
print "<hr/><input dojoType=\"dijit.form.CheckBox\" type=\"checkbox\" id=\"af_readability_enabled\"
name=\"af_readability_enabled\"
$checked>&nbsp;<label for=\"af_readability_enabled\">".__('Inline article content')."</label>";
print "</div>";
}
function hook_prefs_save_feed($feed_id) {
$enabled_feeds = $this->host->get($this, "enabled_feeds");
if (!is_array($enabled_feeds)) $enabled_feeds = array();
$enable = checkbox_to_sql_bool($_POST["af_readability_enabled"]);
$key = array_search($feed_id, $enabled_feeds);
if ($enable) {
if ($key === FALSE) {
array_push($enabled_feeds, $feed_id);
}
} else {
if ($key !== FALSE) {
unset($enabled_feeds[$key]);
}
}
$this->host->set($this, "enabled_feeds", $enabled_feeds);
}
/**
* @SuppressWarnings(PHPMD.UnusedFormalParameter)
*/
function hook_article_filter_action($article, $action) {
return $this->process_article($article);
}
public function extract_content($url) {
global $fetch_effective_url;
$tmp = fetch_file_contents([
"url" => $url,
"http_accept" => "text/*",
"type" => "text/html"]);
if ($tmp && mb_strlen($tmp) < 1024 * 500) {
$tmpdoc = new DOMDocument("1.0", "UTF-8");
if (!$tmpdoc->loadHTML('<?xml encoding="utf-8" ?>\n' . $tmp))
return false;
if (strtolower($tmpdoc->encoding) != 'utf-8') {
$tmpxpath = new DOMXPath($tmpdoc);
foreach ($tmpxpath->query("//meta") as $elem) {
$elem->parentNode->removeChild($elem);
}
$tmp = $tmpdoc->saveHTML();
}
$r = new Readability(new Configuration());
try {
if ($r->parse($tmp)) {
$tmpxpath = new DOMXPath($r->getDOMDOcument());
$entries = $tmpxpath->query('(//a[@href]|//img[@src])');
foreach ($entries as $entry) {
if ($entry->hasAttribute("href")) {
$entry->setAttribute("href",
rewrite_relative_url($fetch_effective_url, $entry->getAttribute("href")));
}
if ($entry->hasAttribute("src")) {
$entry->setAttribute("src",
rewrite_relative_url($fetch_effective_url, $entry->getAttribute("src")));
}
}
return $r->getContent();
}
} catch (Exception $e) {
return false;
}
}
return false;
}
function process_article($article) {
$extracted_content = $this->extract_content($article["link"]);
# let's see if there's anything of value in there
$content_test = trim(strip_tags(sanitize($extracted_content)));
if ($content_test) {
$article["content"] = $extracted_content;
}
return $article;
}
function hook_article_filter($article) {
$enabled_feeds = $this->host->get($this, "enabled_feeds");
if (!is_array($enabled_feeds)) return $article;
$key = array_search($article["feed"]["id"], $enabled_feeds);
if ($key === FALSE) return $article;
return $this->process_article($article);
}
function api_version() {
return 2;
}
private function filter_unknown_feeds($enabled_feeds) {
$tmp = array();
foreach ($enabled_feeds as $feed) {
$sth = $this->pdo->prepare("SELECT id FROM ttrss_feeds WHERE id = ? AND owner_uid = ?");
$sth->execute([$feed, $_SESSION['uid']]);
if ($row = $sth->fetch()) {
array_push($tmp, $feed);
}
}
return $tmp;
}
}