[xsl] Split string and assign result to variables

[Lighton Phiri <lighton.phiri@xxxxxxxxx>]

I am using xslt 1.0 and trying to split a string into three chunks and
then assign them to individual variables. I came across a useful way
of splitting up strings here
dpawson.co.uk/xsl/sect2/StringReplace[DOT]html
However, I cannot seem to find a reliable resource on how I can
dynamically assign variables to the resulting chunks.

A sample string would be as depicted below.
string1/string2/string3

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