From c177de288a16dbe6e88acdb91a6488a191df41cc Mon Sep 17 00:00:00 2001
From: Egil Moeller <egil.moller@freecode.no>
Date: Sun, 28 Mar 2010 03:26:16 +0200
Subject: Added RSS support for the tag browser

---
 .../twitterStyleTags/controllers/tagBrowser.js     | 22 +++++--
 .../twitterStyleTags/templates/tagBrowser.ejs      |  1 +
 .../plugins/twitterStyleTags/templates/tagRss.ejs  | 69 ++++++++++++++++++++++
 3 files changed, 88 insertions(+), 4 deletions(-)
 create mode 100644 etherpad/src/plugins/twitterStyleTags/templates/tagRss.ejs

diff --git a/etherpad/src/plugins/twitterStyleTags/controllers/tagBrowser.js b/etherpad/src/plugins/twitterStyleTags/controllers/tagBrowser.js
index 46175c8..461f30a 100644
--- a/etherpad/src/plugins/twitterStyleTags/controllers/tagBrowser.js
+++ b/etherpad/src/plugins/twitterStyleTags/controllers/tagBrowser.js
@@ -199,6 +199,7 @@ function onRequest() {
   var sql = '' +
     'select ' +
     '  m.id as ID, ' +
+    '  DATE_FORMAT(m.lastWriteTime, \'%a, %d %b %Y %H:%i:%s GMT\') as lastWriteTime, ' +
     '  c.TAGS ' +
     'from ' +
        querySql.sql + ' as q ' +
@@ -207,7 +208,7 @@ function onRequest() {
     '  join PAD_TAG_CACHE as c on ' +
     '    c.PAD_ID = q.ID ' +
     'order by ' +
-    '  lastWriteTime desc ' +
+    '  m.lastWriteTime desc ' +
     'limit 10';
 
     matchingPads = sqlobj.executeRaw(sql, querySql.params);
@@ -232,8 +233,7 @@ function onRequest() {
 
   var isProUser = (isPro && ! padusers.isGuest(userId));
 
-  renderHtml("tagBrowser.ejs",
-   {
+  var info = {
     config: appjet.config,
     tagsToQuery: tagsToQuery,
     padIdToReadonly: server_utils.padIdToReadonly,
@@ -245,6 +245,20 @@ function onRequest() {
     isPro: isPro,
     isProAccountHolder: isProUser,
     account: getSessionProAccount(), // may be falsy
-   }, 'twitterStyleTags');
+  };
+
+  var format = "html";
+  if (request.params.format != undefined)
+    format = request.params.format;
+
+  if (format == "html")
+    renderHtml("tagBrowser.ejs", info, 'twitterStyleTags');
+  else if (format == "rss") {
+    response.setContentType("application/xml; charset=utf-8");
+    response.write(renderTemplateAsString("tagRss.ejs", info, 'twitterStyleTags'));
+    if (request.acceptsGzip) {
+      response.setGzip(true);
+    }
+  }
   return true;
 }
diff --git a/etherpad/src/plugins/twitterStyleTags/templates/tagBrowser.ejs b/etherpad/src/plugins/twitterStyleTags/templates/tagBrowser.ejs
index 61c8e93..1f1c0e3 100644
--- a/etherpad/src/plugins/twitterStyleTags/templates/tagBrowser.ejs
+++ b/etherpad/src/plugins/twitterStyleTags/templates/tagBrowser.ejs
@@ -40,6 +40,7 @@ limitations under the License. */ %>
  helpers.includeJs("pad2.js");
  helpers.suppressGA();
  helpers.setRobotsPolicy({index: false, follow: false});
+ helpers.addToHead('\n<link rel="alternate" href="/ep/tag/?query=' + tagsToQuery(tags, antiTags) + '&format=rss" type="application/rss+xml" title="Query results as RSS" />\n');
 
  function inArray(item, arr) {
    for (var i = 0; i < arr.length; i++)
diff --git a/etherpad/src/plugins/twitterStyleTags/templates/tagRss.ejs b/etherpad/src/plugins/twitterStyleTags/templates/tagRss.ejs
new file mode 100644
index 0000000..2d06781
--- /dev/null
+++ b/etherpad/src/plugins/twitterStyleTags/templates/tagRss.ejs
@@ -0,0 +1,69 @@
+<?xml version="1.0"?>
+<%
+ function inArray(item, arr) {
+   for (var i = 0; i < arr.length; i++)
+     if (arr[i] == item)
+       return true;
+   return false;
+ }
+%>
+<rss version="2.0">
+   <channel>
+      <title>
+	 <% if (tags.length == 0 && antiTags.length == 0) { %>
+	   Latest changed pads
+	 <% } else { %>
+	   <% for (i = 0; i < tags.length; i++) { %>
+	     #<%= tags[i] %>
+	   <% } %>
+	   <% for (i = 0; i < antiTags.length; i++) { %>
+	     !#<%= antiTags[i] %>
+	   <% } %>
+	 <% } %>
+      </title>
+      <link>http://liftoff.msfc.nasa.gov/</link>
+      <description>
+         Etherpad pads / changes for the query:
+	 <% if (tags.length == 0 && antiTags.length == 0) { %>
+	   Latest changed pads
+	 <% } else { %>
+	   <% for (i = 0; i < tags.length; i++) { %>
+	     #<%= tags[i] %>
+	   <% } %>
+	   <% for (i = 0; i < antiTags.length; i++) { %>
+	     !#<%= antiTags[i] %>
+	   <% } %>
+	 <% } %>
+      </description>
+      <language>en-us</language>
+      <pubDate>Tue, 10 Jun 2003 04:00:00 GMT</pubDate>
+      <lastBuildDate>Tue, 10 Jun 2003 09:41:01 GMT</lastBuildDate>
+      <docs>http://blogs.law.harvard.edu/tech/rss</docs>
+      <generator>Etherpad</generator>
+      <managingEditor>editor@example.com</managingEditor>
+      <webMaster>webmaster@example.com</webMaster>
+
+      <% for (i = 0; i < matchingPads.length; i++) { %>
+        <%
+	   var matchingPadId = matchingPads[i].ID;
+	   var matchingPadUrl = matchingPadId;
+	   if (!inArray('writable', matchingPads[i].TAGS)) {
+	     matchingPadId = padIdToReadonly(matchingPads[i].ID);
+	     matchingPadUrl = 'ep/pad/view/' + matchingPadId + '/latest';
+	   }
+        %>
+	<item>
+	  <title><%= matchingPadId %></title>
+	  <link>http://<%= request.host %>/<%= matchingPadUrl %></link>
+	  <description>
+	    <% for (j = 0; j < matchingPads[i].TAGS.length; j++) { %>
+	     #<%= matchingPads[i].TAGS[j] %>
+	    <% } %>
+	  </description>
+	  <pubDate><%= matchingPads[i].lastWriteTime %></pubDate>
+	  <guid>http://<%= request.host %>/<%= matchingPadUrl %></guid>
+	</item>
+      <% } %>
+
+   </channel>
+</rss>
\ No newline at end of file
-- 
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