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share: add support for og:image, etc. metadata for shared articles

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This commit is contained in:
Andrew Dolgov 2018-05-29 22:04:02 +03:00
parent 636164301f
commit f5302247c6
1 changed files with 39 additions and 3 deletions
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42
classes/article.php Normal file → Executable file
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@ -629,16 +629,52 @@ class Article extends Handler_Protected {
} }
} }
$enclosures = self::get_article_enclosures($line["id"]);
if ($zoom_mode) { if ($zoom_mode) {
header("Content-Type: text/html"); header("Content-Type: text/html");
$rv['content'] .= "<html><head> $rv['content'] .= "<!DOCTYPE html>
<html><head>
<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/> <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"/>
<title>".$line["title"]."</title>". <title>".$line["title"]."</title>".
stylesheet_tag("css/default.css")." stylesheet_tag("css/default.css")."
<link rel=\"shortcut icon\" type=\"image/png\" href=\"images/favicon.png\"> <link rel=\"shortcut icon\" type=\"image/png\" href=\"images/favicon.png\">
<link rel=\"icon\" type=\"image/png\" sizes=\"72x72\" href=\"images/favicon-72px.png\"> <link rel=\"icon\" type=\"image/png\" sizes=\"72x72\" href=\"images/favicon-72px.png\">";
</head><body class=\"claro ttrss_utility ttrss_zoom\">"; $rv['content'] .= "<meta property=\"og:title\" content=\"".htmlspecialchars($line["title"])."\"/>\n";
$rv['content'] .= "<meta property=\"og:site_name\" content=\"".htmlspecialchars($line["feed_title"])."\"/>\n";
$rv['content'] .= "<meta property=\"og:description\" content=\"".
htmlspecialchars(truncate_string(strip_tags($line["content"]), 500, "..."))."\"/>\n";
$rv['content'] .= "</head>";
$og_image = false;
foreach ($enclosures as $enc) {
if (strpos($enc["content_type"], "image/") !== FALSE) {
$og_image = $enc["content_url"];
break;
}
}
if (!$og_image) {
$tmpdoc = new DOMDocument();
if (@$tmpdoc->loadHTML(mb_substr($line["content"], 0, 131070))) {
$tmpxpath = new DOMXPath($tmpdoc);
$first_img = $tmpxpath->query("//img")->item(0);
if ($first_img) {
$og_image = $first_img->getAttribute("src");
}
}
}
if ($og_image) {
$rv['content'] .= "<meta property=\"og:image\" content=\"" . htmlspecialchars($og_image) . "\"/>";
}
$rv['content'] .= "<body class=\"claro ttrss_utility ttrss_zoom\">";
} }
$rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">"; $rv['content'] .= "<div class=\"postReply\" id=\"POST-$id\">";