Splitfunction gives troubles - xslt-2.0

Question

I'm facing the following problem or challenge.
I've a an element in my source XML which can have 450 characters.
With my xslt I want to transform this into chunks of 75 characters.
...
<T61>
<parentInfo>SomeInfo</parentInfo>
<T86>
<info>abcdefghijklmnopqrstuvwxyz01234567890abcdefghijklmnopqrstuvwxyz01234567890</info>
</T86>
</T61>
...
The output I generate should look something like:
<T31>
<x>abcdefghijklmnopqrstuvwxyz01234567890</x>
</T31>
<T31>
<x>abcdefghijklmnopqrstuvwxyz01234567890</x>
</T31>
In my code I use an template for T61 which does his work.
I thought to create another template for T86 and call this from inside the T61 template but this seems not to work because I've the complete string. I created an function which could split up the string in parts of 75. But the outcome of the function is still the complete string.
I used a function from an earlier post:
<xsl:function name="my:splitItUp" as="xs:string">
<xsl:param name="input" as="xs:string"/>
<xsl:param name="chunk-size" as="xs:integer"/>
<xsl:value-of>
<xsl:for-each-group select="string-to-codepoints($input)" group-by="(position() -1) idiv $chunk-size">
<xsl:sequence select="codepoints-to-string(current-group())"/>
</xsl:for-each-group>
</xsl:value-of>
</xsl:function>
...
<xsl:template match="T86">
<xsl:for-each select="my:splitItUp(info, 75)">
<T31>
<communication>
<xsl:value-of select="." />
</communication>
</T31>
</xsl:for-each>
</xsl:template>
This structure always result in a complete string. In debug I see it split it up but it concatenates the result together. Can I somehow come out of the function?
Best Regards Dirk

Answer 1

Please have a look this XSLT where you need to set <xsl:param name="stringRequired" select="xs:integer(13)"/> to chunk text:
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xsl:output method="xml" omit-xml-declaration="yes" indent="yes" encoding="utf-8"/>
<xsl:param name="XML">
<info>abcdefghijklmnopqrstuvwxyz01234567890abcdefghijklmnopqrstuvwxyz01234567890</info>
</xsl:param>
<xsl:param name="stringRequired" select="xs:integer(13)"/>
<xsl:param name="XMLLenfgh" select="string-length($XML)"/>
<xsl:template match="/">
<xsl:choose>
<xsl:when test="$XMLLenfgh gt $stringRequired">
<xsl:call-template name="getPart"/>
</xsl:when>
<xsl:otherwise>
<T31>
<x>
<xsl:value-of select="$XML/info"/>
</x>
</T31>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template name="getPart">
<xsl:param name="XML" select="$XML"/>
<xsl:param name="stringRequired" select="$stringRequired"/>
<xsl:param name="XMLLenfgh" select="$XMLLenfgh"/>
<xsl:message>
<xsl:value-of select="$XML"/>
</xsl:message>
<xsl:if test="$XMLLenfgh gt $stringRequired">
<T>
<x>
<xsl:value-of select="substring($XML,1,$stringRequired)"/>
</x>
</T>
<xsl:call-template name="getPart">
<xsl:with-param name="XML"
select="substring($XML,string-length(substring($XML,1,$stringRequired)))"/>
<xsl:with-param name="XMLLenfgh"
select="string-length(substring($XML,string-length(substring($XML,1,$stringRequired))))"/>
<xsl:with-param name="stringRequired" select="$stringRequired"/>
</xsl:call-template>
</xsl:if>
</xsl:template>
</xsl:stylesheet>
OUTPUT:
<T xmlns:xs="http://www.w3.org/2001/XMLSchema">
<x>abcdefghijklm</x>
</T>
<T xmlns:xs="http://www.w3.org/2001/XMLSchema">
<x>mnopqrstuvwxy</x>
</T>
<T xmlns:xs="http://www.w3.org/2001/XMLSchema">
<x>yz01234567890</x>
</T>
<T xmlns:xs="http://www.w3.org/2001/XMLSchema">
<x>0abcdefghijkl</x>
</T>
<T xmlns:xs="http://www.w3.org/2001/XMLSchema">
<x>lmnopqrstuvwx</x>
</T>
<T xmlns:xs="http://www.w3.org/2001/XMLSchema">
<x>xyz0123456789</x>
</T>