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How to split a string into an array using xpath


Alex_2
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I'm trying to break a string into an array based on the length. for Ex: If I have a string of 30 characters, I want to convert into an array of 5 characters each using an xpath function.


Is there any way to do this? Also, I noticed in this thread - Creating an incremental count variable in XSLT / XPath when using Xpath for..in..return?


that we can use "For" as "For $i in 1 to $length return $i". When I'm trying to use "1 to 5" i.e. constants, xpath is accepting, but when I'm trying to pass a variable " 1 to $length", xpath is not accepting.


Please suggest ASAP.


Alex


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Assuming you have an XSLT 2.0 processor like Saxon 9 or XmlPrime or Exselt or Altova and you want to split up a string into a sequence of strings where each string has a certain size then

 

[

<?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"
	xmlns:mf="http://example.com/mf"
	exclude-result-prefixes="xs mf"
	version="2.0">
	
	<xsl:function name="mf:split" as="xs:string*">
		<xsl:param name="input" as="xs:string"/>
		<xsl:param name="size" as="xs:integer"/>
		<xsl:for-each-group select="string-to-codepoints($input)" group-adjacent="(position() - 1) idiv $size">
			<xsl:sequence select="codepoints-to-string(current-group())"/>
		</xsl:for-each-group>
	</xsl:function>
	
	<xsl:template match="/" name="main">
		<xsl:value-of select="mf:split('123456789012345678901234567890123', 5)" separator="
"/>
	</xsl:template>
</xsl:stylesheet>

outputs

12345
67890
12345
67890
12345
67890
123

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