Problems formatting trailing zeroes to specific decimal places - xslt

Question

I'm having some difficulty with the format-number function.
Given this XML
<testvalues>
<test value="02.25"/>
<test value="02.2"/>
<test value="02.20"/>
</testvalues>
I am trying to produce this output
<testvalues>
<test>02.25</test>
<test>02.2</test>
<test>02.20</test>
</testvalues>
But I can't find a picture-string do do that.
Given this xslt
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
exclude-result-prefixes="xs"
version="2.0">
<xsl:template match="/">
<xsl:apply-templates/>
</xsl:template>
<xsl:template match="testvalues">
<xsl:copy>
<xsl:apply-templates mode="by-1d"/>
<xsl:apply-templates mode="by-1plus1d"/>
<xsl:apply-templates mode="by-2d"/>
</xsl:copy>
</xsl:template>
<xsl:template match="test" mode="by-1d">
<xsl:copy>
<xsl:value-of select="format-number(#value,'00.0')"/>
</xsl:copy>
</xsl:template>
<xsl:template match="test" mode="by-1plus1d">
<xsl:copy>
<xsl:value-of select="format-number(#value,'00.0#')"/>
</xsl:copy>
</xsl:template>
<xsl:template match="test" mode="by-2d">
<xsl:copy>
<xsl:value-of select="format-number(#value,'00.00')"/>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
the output created is
<?xml version="1.0" encoding="UTF-8"?>
<testvalues>
<test>02.2</test>
<test>02.2</test>
<test>02.2</test>
<test>02.25</test>
<test>02.2</test>
<test>02.2</test>
<test>02.25</test>
<test>02.20</test>
<test>02.20</test>
</testvalues>
The trailing zeros do not match the the incoming digits.
'00.00' will force 2 trailing digit
'00.0' will trim to one trailing digit
'00.0#' will force 2 digits except where 2nd digit is zero when it trims to 1 digit
I want to print just 1 trailing digit where the input is 1 trailing digit, but 2 digits (including zero) where the input has >1 trailing digit.
Is that possible?

Answer 1

I want to print just 1 trailing digit where the input is 1 trailing digit, but 2 digits (including zero) where the input has >1 trailing digit.
To do exactly that, you could use:
<xsl:template match="test">
<xsl:copy>
<xsl:value-of select="format-number(#value, if(string-length(substring-after(#value, '.')) > 1) then'00.00' else '00.0')"/>
</xsl:copy>
</xsl:template>
Given the input of:
XML
<testvalues>
<test value="02"/>
<test value="02.2"/>
<test value="02.20"/>
<test value="02.200"/>
<test value="02.2000"/>
<test value="02.20002"/>
</testvalues>
this would produce:
Result
<?xml version="1.0" encoding="UTF-8"?>
<testvalues>
<test>02.0</test>
<test>02.2</test>
<test>02.20</test>
<test>02.20</test>
<test>02.20</test>
<test>02.20</test>
</testvalues>
Demo: https://xsltfiddle.liberty-development.net/nbBfrFy/2