rss for images extension

git-svn-id: file:///home/shish/svn/shimmie2/trunk@45 7f39781d-f577-437e-ae19-be835c7a54ca

ext/rss_images.ext.php

@@ -0,0 +1,71 @@
+<?php
+
+class RSS_Images 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\" href=\"".make_link("rss/images")."\" />");
+		}
+		if(is_a($event, 'PageRequestEvent') && ($event->page == "rss")) {
+			if($event->get_arg(0) == 'images') {
+				global $database;
+				$this->do_rss($database->get_images(0, 12));
+			}
+		}
+	}
+// }}}
+// output {{{
+	private function do_rss($images) {
+		// TODO: this function
+		global $page;
+		global $config;
+		$page->set_mode("data");
+		$page->set_type("application/xml");
+
+		$data = "";
+		foreach($images as $image) {
+			$link = make_link("post/view/{$image->id}");
+			$tags = $image->get_tag_list();
+			$owner = $image->get_owner();
+			$content = html_escape(
+				"<p>" . build_thumb_html($image) . "</p>" .
+				"<p>Uploaded by " . $owner->name . "</p>"
+			);
+			
+			$data .= "
+				<item>
+					<title>{$image->id} - $tags</title>
+					<link>$link</link>
+					<guid isPermaLink=\"true\">$link</guid>
+					<description>$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 uploads to 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_Images());
+?>