how to Split random string with coma(,) in XSLT 1.0

Question

I need to split string with coma and output something like below.

input 1:
<xsl:variable name="weekdays" select="sunday,tuesday,wednesday">

input 2:
<xsl:variable name="weekdays" select="sunday,thursday,friday,saturday">

Input might contain random weekdays. I need output something like below.

output 1:
<weekday>
sunday
Tuesday
wednesday
</weekday>

output 2:
<weekday>
sunday
Thursday
Friday
Saturday
</weekday>

Can someone help on this.

Answer 1

In order to achieve this, your input XML should contain the comma separated values in one of the elements or you will have to prepare the value of the <xsl:variable> accordingly. The syntax for <xsl:variable> shown in your question is incorrect.

Input XML

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<weekdays>Sunday,Tuesday,Wednesday</weekdays>

In the XSL, you can use a variable to hold the value from the element and use the translate function to replace the comma with the newline characters.

Transformation XSL

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes" />
    <xsl:strip-space elements="*" />
    <xsl:variable name="weekday-names" select="weekdays" />
    <xsl:template match="/">
        <output>
            <xsl:value-of select="translate($weekday-names,',','&#xA;')" />
        </output>
    </xsl:template>
</xsl:stylesheet>

Output XML

<?xml version="1.0" encoding="UTF-8"?>
<output>Sunday
    Tuesday
    Wednesday
</output>