Extracting a class from the section attribute using xsl

Question

I have a XSLT question which follows on from the question I asked last week. XSL for Xml: Inserting specific classes using XSL

The challenge is to insert classes acc

Answer 1

Slightly modified XSLT from my answer: https://stackoverflow.com/a/13225163/787016. It adds class attribute and uses substring-after function to extract right part of section attribute.

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="xml" omit-xml-declaration="yes" indent="yes"/>

  <xsl:key name="k" match="page" use="@section"/>

  <xsl:template match="/root">
    <table>
      <tr>
        <xsl:apply-templates select="page[generate-id() = generate-id(key('k', @section))]"/>
      </tr>
      <tr>
        <xsl:apply-templates select="page[generate-id() = generate-id(key('k', @section))]" mode="page"/>
      </tr>
    </table>
  </xsl:template>

  <xsl:template match="page">
    <td class="{substring-after(@section, '_')}">
      <xsl:value-of select="."/>
    </td>
    <td></td>
  </xsl:template>

  <xsl:template match="page" mode="page">
    <td>
      <xsl:value-of select="@number"/>
    </td>
    <td>
      <xsl:value-of select="key('k', @section)[last()]/@number"/>
    </td>
  </xsl:template>

</xsl:stylesheet>