Allow for filtering pages and Spaces out of Web RSS

{pre}
#set ($hiddenSpaces = ["XWiki", "Admin", "Panels"])
#set ($hiddenPages = ["Main.WebRss", "Main.WebSearch", "Main.BlogRss","Main.Test", "Blog.Macros", "Main.TagsRss", "Main.WikiLaunch", "Main.RegisterNewUserAction", "Main.SpaceIndex", "Blog.Category", "Main.RecentMembers", "Main.Tags", "Main.Dashboard", "Main.PersonalRSS", "Blog.Categories"])
$context.setCacheDuration(1800)
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://purl.org/rss/1.0/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:wiki="http://purl.org/rss/1.0/modules/wiki/" xmlns:html="http://www.w3.org/1999/xhtml">
<channel rdf:about="$baseurl">
<title>
#if($title)
  $title
#else
  $request.serverName
#end
</title>
<link>$baseurl</link>
<description>
#if($description)
  $description
#else
  $request.serverName
#end
</description>
#set($logourl = $xwiki.getSkinFile($xwiki.getSkinPreference('logo', 'logo.png')))
#set($port = "")
#if(($request.scheme == "http") && ($request.serverPort != 80))
  #set($port = ":${request.serverPort}")
#elseif(($request.scheme == "https") && ($request.serverPort != 443))
  #set($port = ":${request.serverPort}")
#end
#set($logourl = "${request.scheme}://${request.serverName}${port}$logourl")
<image rdf:resource="$logourl"/>
<dc:language>$doc.defaultLanguage</dc:language>
<dc:rights>$xwiki.getXMLEncoded($xwiki.webCopyright.replaceAll('<', '<html:').replaceAll('<html:/', '</html:'))</dc:rights>
<dc:publisher>$xwiki.getUserName($doc.author, false)</dc:publisher>
<dc:creator>$xwiki.getUserName($doc.author, false)</dc:creator>
<items>
<rdf:Seq>
#if(!$list)
  #if(!$sql)
    #set($sql = "where 1=1 order by doc.date desc")
  #end
  #set($list = $xwiki.searchDocuments($sql, 50, 0))
#end
#set($list = $xwiki.wrapDocs($list))
#foreach ($currentdoc in $list)
  #if(!$hiddenPages.contains($currentdoc.fullName) && !$hiddenSpaces.contains($currentdoc.space))
    #if($xwiki.hasAccessLevel("view", "${context.database}:${currentdoc.fullName}"))
      <rdf:li rdf:resource="$currentdoc.getExternalURL('view', "language=${currentdoc.realLanguage}")" />
    #end
  #end
#end
</rdf:Seq>
</items>
</channel>
<image rdf:about="$logourl">
  <title>XWiki Logo</title>
  <link>${baseurl}</link>
  <url>$logourl</url>
</image>
#foreach ($currentdoc in $list)
  #if(!$hiddenPages.contains($currentdoc.fullName) && !$hiddenSpaces.contains($currentdoc.space))
    #if($xwiki.hasAccessLevel("view", "${context.database}:${currentdoc.fullName}"))
      #set ($url = $currentdoc.getExternalURL('view', "language=${currentdoc.realLanguage}"))
      #if ($currentdoc.content.length() < 255)
        #set ($length = $currentdoc.content.length())
      #else
        #set ($length = 255)
      #end
      <item rdf:about="$url">
        <title>$xwiki.getXMLEncoded(${currentdoc.displayTitle})</title>
        <link>$url</link>
        <description>Version $currentdoc.version edited by $xwiki.getXMLEncoded($xwiki.getUserName($currentdoc.author,     false)) on $currentdoc.date</description>
        #set($tz = $xwiki.formatDate($currentdoc.date, "Z"))
        #set($tz = "${tz.substring(0, 3)}:${tz.substring(3)}")
        <dc:date>$xwiki.formatDate($currentdoc.date, "yyyy-MM-dd")T$xwiki.formatDate($currentdoc.date, "hh:mm:ss")$tz</dc:date>
        <dc:creator>$xwiki.getXMLEncoded($xwiki.getUserName($currentdoc.creator, false))</dc:creator>
        <dc:contributor>
          <rdf:Description link="">
            <rdf:value>$xwiki.getXMLEncoded($xwiki.getUserName($currentdoc.author, false))</rdf:value>
          </rdf:Description>
        </dc:contributor>
      </item>
    #end
  #end
#end
</rdf:RDF>
{/pre}