initial import of rss for comments

git-svn-id: file:///home/shish/svn/shimmie2/trunk@102 7f39781d-f577-437e-ae19-be835c7a54ca

contrib/rss_comments/main.php

@@ -0,0 +1,83 @@
+<?php
+
+class RSS_Comments extends Extension {
+// event handling {{{
+	public function receive_event($event) {
+		if(is_a($event, 'PageRequestEvent') && ($event->page == "index")) {
+			global $page;
+			global $config;
+			$title = $config->get_string('title');
+
+			$page->add_header("<link rel=\"alternate\" type=\"application/rss+xml\" ".
+				"title=\"$title - Comments\" href=\"".make_link("rss/comments")."\" />");
+		}
+		if(is_a($event, 'PageRequestEvent') && ($event->page == "rss")) {
+			if($event->get_arg(0) == 'comments') {
+				global $database;
+				$this->do_rss($database);
+			}
+		}
+	}
+// }}}
+// output {{{
+	private function do_rss($database) {
+		global $page;
+		global $config;
+		$page->set_mode("data");
+		$page->set_type("application/xml");
+
+		$comments = $database->db->GetAll("
+				SELECT
+				users.id as user_id, users.name as user_name,
+				comments.comment as comment, comments.id as comment_id,
+				comments.image_id as image_id, comments.owner_ip as poster_ip,
+				UNIX_TIMESTAMP(posted) AS posted_timestamp
+				FROM comments
+				LEFT JOIN users ON comments.owner_id=users.id
+				ORDER BY comments.id DESC
+				LIMIT 10
+				");
+
+		$data = "";
+		foreach($comments as $comment) {
+			$image_id = $comment['image_id'];
+			$comment_id = $comment['comment_id'];
+			$link = make_link("post/view/$image_id");
+			$owner = html_escape($comment['user_name']);
+			$posted = strftime("%a, %d %b %Y %T %Z", $comment['posted_timestamp']);
+			$comment = html_escape($comment['comment']);
+			$content = html_escape("$owner: $comment");
+			
+			$data .= "
+				<item>
+					<title>$owner comments on $image_id</title>
+					<link>$link</link>
+					<guid isPermaLink=\"false\">$comment_id</guid>
+					<pubDate>$posted</pubDate>
+					<description>$content</description>
+				</item>
+			";
+		}
+
+		$title = $config->get_string('title');
+		$base_href = $config->get_string('base_href');
+		$version = $config->get_string('version');
+		$xml = <<<EOD
+<?xml version="1.0" encoding="utf-8" ?>
+<rss version="2.0">
+    <channel>
+        <title>$title</title>
+        <description>The latest comments on the image board</description>
+		<link>$base_href</link>
+		<generator>$version</generator>
+		<copyright>(c) 2007 Shish</copyright>
+		$data
+	</channel>
+</rss>
+EOD;
+		$page->set_data($xml);
+	}
+// }}}
+}
+add_event_listener(new RSS_Comments());
+?>