plugin.php


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<?php

class gravatar extends RatatoeskrPlugin
{
    public function ste_tag_gravatar($ste, $params, $sub)
    {
        if(!isset($params["comment"]))
            throw new \ste\RuntimeError("ste:gravatar needs the comment parameter.");

        $ste_comment = $ste->get_var_by_name($params["comment"]);

        if(isset($ste_comment["__obj"]))
            $comment = $ste_comment["__obj"];
        else
            $comment = Comment::by_id($ste_comment["id"]);

        $mail_hash = md5(strtolower(trim($comment->author_mail)));

        $gravatar_args = array("default" => "identicon", "rating" => "g", "size" => "80");
        $query_fragments = array();
        foreach($gravatar_args as $key => &$value)
        {
            if(isset($params[$key]))
                $value = $params[$key];
            $value = htmlspecialchars(urlencode($value));
            $query_fragments[] = "$key=$value";
        }

        $styles = "width: {$gravatar_args["size"]}px; height: {$gravatar_args["size"]}px;" . (isset($params["style"]) ? " " . $params["style"] : "");

        $protocol = ((!empty($_SERVER["HTTPS"])) and ($_SERVER["HTTPS"] == "on")) ? "https" : "http";

        return "<img src=\"$protocol://www.gravatar.com/avatar/$mail_hash?" . implode("&", $query_fragments) . "\" style=\"" . htmlspecialchars($styles) . "\" alt=\"\" />";
    }

    public function init()
    {
        $this->ste->register_tag("gravatar", array($this, "ste_tag_gravatar"));
    }
}