$ saxon time.xml  time.xsl


Elapsed Time (hh:mm:ss): 00:07:00



Song 1: title1
Length (hh:mm:ss): 00:02:30

Song 2: title2
Length (hh:mm:ss): 00:02:15

Song 3: title3
Length (hh:mm:ss): 00:02:15




<album>
   <general>
      <title>My Album</title>
      <year>2005</year>
   </general>

   <content>
      <song>
         <songTitle>title1</songTitle>
         <songLengthInSeconds>150</songLengthInSeconds>
      </song>
      <song>
         <songTitle>title2</songTitle>
         <songLengthInSeconds>135</songLengthInSeconds>
      </song>
      <song>
         <songTitle>title3</songTitle>
         <songLengthInSeconds>135</songLengthInSeconds>
      </song>
   </content>
</album>



<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                version="1.0">



<xsl:output method="text"/>

<xsl:template name="time">
<xsl:param name="s" select="songLengthInSeconds"/>
 <xsl:text>(hh:mm:ss): </xsl:text>
 <xsl:variable name="h" select="floor($s div 3600)"/>
 <xsl:value-of select="format-number($h,'00')"/>
 <xsl:text>:</xsl:text>
 <xsl:variable name="m" select="floor(($s - $h * 60) div 60)"/>
 <xsl:value-of select="format-number($m,'00')"/>
 <xsl:text>:</xsl:text>
 <xsl:value-of select="format-number($s - $h*3600 - $m*60,'00')"/>
</xsl:template>

<xsl:template match="song">
Song <xsl:number/>: <xsl:value-of select="songTitle"/>
Length <xsl:call-template name="time"/>
</xsl:template>


<xsl:template match="general">
<xsl:value-of select="Title"/>
Elapsed Time <xsl:text/>
 <xsl:call-template name="time">
 <xsl:with-param name="s" select="sum(../content/song/songLengthInSeconds)"/>
 </xsl:call-template>
</xsl:template>

</xsl:stylesheet>