doc/xslt/website/rss.xsl

   1 <?xml version="1.0"?>
   2 <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
   3                 xmlns:rss="http://purl.org/rss/1.0/"
   4                 xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
   5                 xmlns:cvsf="http://nwalsh.com/xslt/ext/com.nwalsh.saxon.CVS"
   6                 xmlns:cvs="http://nwalsh.com/rdf/cvs#"
   7                 xmlns:dc="http://purl.org/dc/elements/1.1/"
   8                 exclude-result-prefixes="rss rdf cvs dc cvsf"
   9                 version="1.0">
  10
  11 <xsl:output method="html"/>
  12
  13 <xsl:template match="rss">
  14   <xsl:variable name="rss" select="document(@feed, .)"/>
  15
  16   <div class='rss'>
  17     <xsl:choose>
  18       <xsl:when test="not($rss)">
  19         <xsl:message>RSS Failed: <xsl:value-of select="@feed"/></xsl:message>
  20         <xsl:text>[RSS Failed: </xsl:text>
  21         <xsl:value-of select="@feed"/>
  22       </xsl:when>
  23       <xsl:when test="$rss/rdf:RDF">
  24         <xsl:apply-templates select="$rss/*/rss:channel"/>
  25       </xsl:when>
  26       <xsl:otherwise>
  27         <!-- is there an otherwise case? -->
  28         <xsl:apply-templates select="$rss//rss:channel"/>
  29       </xsl:otherwise>
  30     </xsl:choose>
  31   </div>
  32 </xsl:template>
  33
  34 <xsl:template match="rss:channel">
  35   <xsl:variable name="image-resource" select="rss:image/@rdf:resource"/>
  36   <xsl:variable name="image" select="//rss:image[@rdf:about = $image-resource]"/>
  37
  38   <xsl:if test="$image">
  39     <xsl:choose>
  40       <xsl:when test="$image/rss:link">
  41         <a href="{$image/rss:link}">
  42           <img src="{$image/rss:url}" alt="{$image/rss:title}" align="right" border="0"/>
  43         </a>
  44       </xsl:when>
  45       <xsl:otherwise>
  46         <img src="{$image/rss:url}" alt="{$image/rss:title}" align="right"/>
  47       </xsl:otherwise>
  48     </xsl:choose>
  49   </xsl:if>
  50
  51   <xsl:apply-templates select="rss:title"/>
  52   <xsl:apply-templates select="rss:description"/>
  53   <xsl:apply-templates select="rss:items"/>
  54
  55   <xsl:if test="$image">
  56     <br clear="right"/>
  57   </xsl:if>
  58 </xsl:template>
  59
  60 <xsl:template match="rss:title">
  61   <xsl:param name="wrapper" select="'h3'"/>
  62
  63   <xsl:element name="{$wrapper}">
  64     <xsl:choose>
  65       <xsl:when test="../rss:link">
  66         <a href="{../rss:link[1]}">
  67           <xsl:apply-templates/>
  68         </a>
  69       </xsl:when>
  70       <xsl:otherwise>
  71         <xsl:apply-templates/>
  72       </xsl:otherwise>
  73     </xsl:choose>
  74
  75     <xsl:if test="../dc:date|../cvs:date">
  76       <xsl:choose>
  77         <xsl:when test="../dc:date">
  78           <xsl:text> (</xsl:text>
  79           <xsl:value-of select="../dc:date[1]"/>
  80           <xsl:text>)</xsl:text>
  81         </xsl:when>
  82         <xsl:when test="function-available('cvsf:localTime')">
  83           <xsl:variable name="timeString" select="cvsf:localTime(../cvs:date[1])"/>
  84           <xsl:text> (</xsl:text>
  85           <xsl:value-of select="substring($timeString, 1, 3)"/>
  86           <xsl:text>, </xsl:text>
  87           <xsl:value-of select="substring($timeString, 9, 2)"/>
  88           <xsl:text> </xsl:text>
  89           <xsl:value-of select="substring($timeString, 5, 3)"/>
  90           <xsl:text> </xsl:text>
  91           <xsl:value-of select="substring($timeString, 25, 4)"/>
  92           <xsl:text>)</xsl:text>
  93         </xsl:when>
  94         <xsl:otherwise>
  95           <xsl:value-of select="../cvs:date[1]"/>
  96         </xsl:otherwise>
  97       </xsl:choose>
  98     </xsl:if>
  99   </xsl:element>
 100 </xsl:template>
 101
 102 <xsl:template match="rss:description">
 103   <p>
 104     <xsl:apply-templates/>
 105   </p>
 106 </xsl:template>
 107
 108 <xsl:template match="rss:items">
 109   <dl>
 110     <xsl:for-each select="rdf:Seq/rdf:li[@rdf:resource and @rdf:resource != '']">
 111       <xsl:variable name="resource" select="@rdf:resource"/>
 112       <xsl:variable name="item" select="//rss:item[@rdf:about = $resource]"/>
 113       <xsl:if test="not($item)">
 114         <xsl:message>
 115           <xsl:text>RSS Warning: there is no item labelled: </xsl:text>
 116           <xsl:value-of select="$resource"/>
 117         </xsl:message>
 118       </xsl:if>
 119       <xsl:if test="count($item) &gt; 1">
 120         <xsl:message>
 121           <xsl:text>RSS Warning: there is more than one item labelled: </xsl:text>
 122           <xsl:value-of select="$resource"/>
 123         </xsl:message>
 124       </xsl:if>
 125       <xsl:apply-templates select="$item"/>
 126     </xsl:for-each>
 127   </dl>
 128 </xsl:template>
 129
 130 <xsl:template match="rss:item">
 131   <xsl:message>RSS item: <xsl:value-of select="rss:title"/></xsl:message>
 132
 133   <xsl:apply-templates select="rss:title">
 134     <xsl:with-param name="wrapper" select="'dt'"/>
 135   </xsl:apply-templates>
 136   <xsl:if test="rss:description">
 137     <dd>
 138       <xsl:apply-templates select="rss:description"/>
 139     </dd>
 140   </xsl:if>
 141 </xsl:template>
 142
 143 </xsl:stylesheet>