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File: Data.xml
<test>
<color>red</color>
<color>blue</color>
<color>yellow</color>
</test>
File: Transform.xslt
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:output omit-xml-declaration="yes" />
<xsl:variable name="fieldWidth">12</xsl:variable>
<xsl:template match="color">
<xsl:variable name="valueLength" select="string-length(.)" />
<xsl:variable name="padding" select="$fieldWidth - $valueLength" />
<xsl:value-of select="substring(' ',1,$padding)" />
<xsl:value-of select="." />
</xsl:template>
</xsl:stylesheet>
Output:
red
blue
yellow
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