How to use String tokenize function in XSLT

Here is an example to use String function: tokenize()

Say the csv has element Role seperated by " ; " and we need to translate using tokenize function:

Roles: Supplier;Vendor;Investor

<Roles>

             <Role>Supplier</Role>

             <Role>Vendor</Role>

             <Role>Investor</Role>

</Roles>

XSL Code:

  <Roles>

                <xsl:call-template name="tokenize">

                  <xsl:with-param name="string"

                                  select="/ns0:Role"/>

                </xsl:call-template>

              </Roles>

  <xsl:template name="tokenize">

    <xsl:param name="separator" select="';'"/>

    <xsl:param name="string"/>

    <xsl:choose>

      <xsl:when test="contains($string,$separator)">

        <Role>

          <xsl:value-of select="substring-before($string,$separator)"/>

        </Role>

        <xsl:call-template name="tokenize">

          <xsl:with-param name="string"

                          select="substring-after($string,$separator)"/>

        </xsl:call-template>

      </xsl:when>

      <xsl:otherwise>

        <Role>

          <xsl:value-of select="$string"/>

        </Role>

      </xsl:otherwise>

    </xsl:choose>

  </xsl:template>