xml - How to use XSLT to group RSS feeds -

i have xml file data read feeds on internet. xml standard rss 2.0 file. looks (i ommited tags shorten post):

<?xml version="1.0" encoding="iso-8859-1"?> <rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/">   <channel>     <title/>     <item>       <title>blah</title>       <category>cat1</category>     </item>     <item>       <title>blah2</title>       <category>cat2</category>     </item>     <item>       <title>blah3</title>       <category>cat1</category>     </item>   </channel> </rss> 

what i'm trying use xslt create html file. problem need group items category tag. in order generate like:

<div>   <span>cat1</span>   <div>     <span>blah</span>     <span>blah3</span>   </div> </div> <div>   <span>cat2</span>   <div>     <span>blah2</span>   </div> </div> 

so far found bunch os posts teaches how use xslt group using attributes (like this, this , this). but, attempts adaptate failed.

tia,

bob

this should started

<?xml version="1.0" encoding="utf-8"?> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/xsl/transform"  >     <xsl:output method="html" indent="yes" omit-xml-declaration="yes"/>      <xsl:template match="@* | node()">             <xsl:apply-templates select="@* | node()"/>     </xsl:template>      <xsl:template match="item[not(category = preceding-sibling::item/category)]">         <xsl:variable name="category" select="category"/>         <div>             <span>                 <xsl:value-of select="category"/>             </span>             <div>             <span>                 <xsl:value-of select="title"/>             </span>             <xsl:apply-templates select="following-sibling::item[category=$category]" mode="extra"/>             </div>         </div>     </xsl:template>      <xsl:template match="item" mode="extra">         <span>             <xsl:value-of select="title"/>         </span>     </xsl:template> </xsl:stylesheet>