Question

This is a problem I came across. To prevent h1 to be duplicated, in xml every h1 tag will have a radom number after h1. And the source xml and the wanted html are shown below:

source xml:

<h1_JW1XRT>Hello1</h1_JW1XRT>
<h1_JXZRIE>Hello2</h1_JXZRIE>

convert into html

<h1 id="h1_JW1XRT">Hello1</h1>
<h1 id="h1_JXZRIE">Hello2</h1>

how can i write this template?

Answer 1

This transformation:

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

 <xsl:template match="*[starts-with(name(), 'h1')]">
  <h1 id="{name()}"><xsl:apply-templates/></h1>
 </xsl:template>
</xsl:stylesheet>

when applied on the following XML document (the provided XML fragment, wrapped in a single top element — to become a well-formed XML document):

<t>
    <h1_JW1XRT>Hello1</h1_JW1XRT>
    <h1_JXZRIE>Hello2</h1_JXZRIE>
</t>

produces the wanted, correct result:

<h1 id="h1_JW1XRT">Hello1</h1>
<h1 id="h1_JXZRIE">Hello2</h1>

Explanation: Proper use of the standard XPath function starts-with()