From 20e43935fca9d1fa8838782cf714c40cc286acbc Mon Sep 17 00:00:00 2001
From: Andrew Dolgov <fox@madoka.volgo-balt.ru>
Date: Mon, 4 Apr 2011 13:30:33 +0400
Subject: [PATCH] generate template-enabled Atom feeds instead of makeshift rss

---
 functions.php                | 82 ++++++++++++++++++------------------
 templates/generated_feed.txt | 36 ++++++++++++++++
 2 files changed, 78 insertions(+), 40 deletions(-)
 create mode 100644 templates/generated_feed.txt

diff --git a/functions.php b/functions.php
index 37f56d063..26a973679 100644
--- a/functions.php
+++ b/functions.php
@@ -3628,6 +3628,8 @@
 	function generate_syndicated_feed($link, $owner_uid, $feed, $is_cat,
 		$limit, $search, $search_mode, $match_on, $view_mode = false) {
 
+		require_once "lib/MiniTemplator.class.php";
+
 		$note_style = 	"float : right; background-color : #fff7d5; border-width : 1px; ".
 			"padding : 5px; border-style : dashed; border-color : #e7d796;".
 			"margin-bottom : 1em; color : #9a8c59;";
@@ -3649,69 +3651,69 @@
 		$feed_site_url = $qfh_ret[2];
 		$last_error = $qfh_ret[3];
 
+		$feed_self_url = get_self_url_prefix() .
+			"/backend.php?op=rss&id=-2&key=" .
+			get_feed_access_key($link, -2, false);
+
 		if (!$feed_site_url) $feed_site_url = get_self_url_prefix();
 
-		print "<?xml version=\"1.0\" encoding=\"utf-8\"?>
-			<?xml-stylesheet type=\"text/xsl\" href=\"rss.xsl\"?>
-			<rss version=\"2.0\" xmlns:dc=\"http://purl.org/dc/elements/1.1/\"
-				  xmlns:atom=\"http://www.w3.org/2005/Atom\">
-			<channel>";
+		$tpl = new MiniTemplator;
 
-		if (PUBSUBHUBBUB_HUB && $feed == -2) {
-			print "<atom:link rel='hub' href='".PUBSUBHUBBUB_HUB."'/>";
+		$tpl->readTemplateFromFile("templates/generated_feed.txt");
+
+		$tpl->setVariable('FEED_TITLE', $feed_title);
+		$tpl->setVariable('VERSION', VERSION);
+		$tpl->setVariable('FEED_URL', htmlspecialchars($feed_self_url));
+
+		if (PUBSUBHUBBUB_HUB) {
+			$tpl->setVariable('HUB_URL', htmlspecialchars(PUBSUBHUBBUB_HUB));
+			$tpl->addBlock('feed_hub');
 		}
 
-		print "<title>$feed_title</title>
-			<link>$feed_site_url</link>
-			<description>Feed generated by Tiny Tiny RSS</description>";
+		$tpl->setVariable('SELF_URL', htmlspecialchars(get_self_url_prefix()));
 
  		while ($line = db_fetch_assoc($result)) {
- 			print "<item>";
- 			print "<guid>" . htmlspecialchars($line["guid"]) . "</guid>";
- 			print "<link>" . htmlspecialchars($line["link"]) . "</link>";
+			$tpl->setVariable('ARTICLE_ID', htmlspecialchars($line['link']));
+			$tpl->setVariable('ARTICLE_LINK', htmlspecialchars($line['link']));
+			$tpl->setVariable('ARTICLE_TITLE', htmlspecialchars($line['title']));
+			$tpl->setVariable('ARTICLE_EXCERPT',
+				truncate_string(strip_tags($line["content_preview"]), 100, '...'));
+			$tpl->setVariable('ARTICLE_CONTENT',
+				sanitize_rss($link, $line["content_preview"], false, $owner_uid));
+
+			$tpl->setVariable('ARTICLE_UPDATED', date('c', strtotime($line["updated"])));
+			$tpl->setVariable('ARTICLE_AUTHOR', htmlspecialchars($line['author']));
 
 			$tags = get_article_tags($link, $line["id"], $owner_uid);
 
 			foreach ($tags as $tag) {
-				print "<category>" . htmlspecialchars($tag) . "</category>";
+				$tpl->setVariable('ARTICLE_CATEGORY', htmlspecialchars($tag));
+				$tpl->addBlock('category');
 			}
 
- 			$rfc822_date = date('r', strtotime($line["updated"]));
-
-			print "<pubDate>$rfc822_date</pubDate>";
-
-			if ($line["author"]) {
-				print "<author>" . htmlspecialchars($line["author"]) . "</author>";
-			}
-
- 			print "<title><![CDATA[" .
- 				htmlspecialchars($line["title"]) . "]]></title>";
-
-			print "<description><![CDATA[";
-
-			if ($line["note"]) {
-				print "<div style='$note_style'>";
-				print $line["note"];
-				print "</div>";
-			}
-
-			print sanitize_rss($link, $line["content_preview"], false, $owner_uid);
-			print "]]></description>";
-
 			$enclosures = get_article_enclosures($link, $line["id"]);
 
 			foreach ($enclosures as $e) {
 				$type = htmlspecialchars($e['content_type']);
 				$url = htmlspecialchars($e['content_url']);
 				$length = $e['duration'];
-				print "<enclosure url=\"$url\" type=\"$type\" length=\"$length\"/>";
+
+				$tpl->setVariable('ARTICLE_ENCLOSURE_URL', $url);
+				$tpl->setVariable('ARTICLE_ENCLOSURE_TYPE', $type);
+				$tpl->setVariable('ARTICLE_ENCLOSURE_LENGTH', $length);
+
+				$tpl->addBlock('enclosure');
 			}
 
- 			print "</item>";
-  		}
+			$tpl->addBlock('entry');
+		}
 
- 		print "</channel></rss>";
+		$tmp = "";
 
+		$tpl->addBlock('feed');
+		$tpl->generateOutputToString($tmp);
+
+		print $tmp;
 	}
 
 	function getCategoryTitle($link, $cat_id) {
diff --git a/templates/generated_feed.txt b/templates/generated_feed.txt
new file mode 100644
index 000000000..9631d4cf8
--- /dev/null
+++ b/templates/generated_feed.txt
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- $BeginBlock feed -->
+<feed xmlns="http://www.w3.org/2005/Atom">
+<title>${FEED_TITLE}</title>
+<generator uri="http://tt-rss.org/">Tiny Tiny RSS/${VERSION}</generator>
+<updated>${ARTICLE_UPDATED}</updated>
+<id>${FEED_URL}</id>
+<link href="${FEED_URL}" rel="self"/>
+<!-- $BeginBlock feed_hub -->
+<link href="${HUB_URL}" rel="hub"/>
+<!-- $EndBlock feed_hub -->
+<link href="${SELF_URL}" rel="alternate"/>
+<!-- $BeginBlock entry -->
+<entry>
+	<id>${ARTICLE_ID}</id>
+	<link href="${ARTICLE_LINK}" rel="alternate" type="text/html"/>
+	<title>${ARTICLE_TITLE}</title>
+	<summary type="html"><![CDATA[${ARTICLE_EXCERPT}]]></summary>
+	<content type="html"><![CDATA[${ARTICLE_CONTENT}]]></content>
+	<updated>${ARTICLE_UPDATED}</updated>
+	<author><name>${ARTICLE_AUTHOR}</name></author>
+<!-- $BeginBlock category -->
+	<category term="${ARTICLE_CATEGORY}"/>
+<!-- $EndBlock category -->
+<!-- $BeginBlock enclosure -->
+	<link rel="enclosure" 
+		type="${ARTICLE_ENCLOSURE_TYPE}" 
+		length="${ARTICLE_ENCLOSURE_LENGTH}"
+		href="${ARTICLE_ENCLOSURE_URL}"/>
+<!-- $EndBlock enclosure -->
+</entry>
+<!-- $EndBlock entry -->
+<!-- $EndBlock feed -->
+</feed>
+<!-- vim:ft=xml
+	  -->