How to handle the below type of scenario using XSLT?
Example 1:
Input: <cross-refs>[5, 6, 7, 8, 9]</cross-refs>
Excepted output: <cross-refs>[5-9]</cross-refs>
Example 2:
Input: <cross-refs>[4, 6, 7, 8, 9]</cross-refs>
Excepted output: <cross-refs>[4,6-9]</cross-refs>
Example 3:
Input: <cross-refs>[4, 5, 6, 7, 9, 11, 12,13]</cross-refs>
Excepted output: <cross-refs>[4-7,9,11-13]</cross-refs>
Example 4:
Input: <cross-refs>[4, 5, 6, 7, 9, 10, 11, 12, 13]</cross-refs>
Excepted output: <cross-refs>[4-7,9-13]</cross-refs>
Thanks in advance
Consider the following example:
XML
<input>
<cross-refs>[5, 6, 7, 8, 9]</cross-refs>
<cross-refs>[4, 6, 7, 8, 9]</cross-refs>
<cross-refs>[4, 5, 6, 7, 9, 11, 12, 13]</cross-refs>
<cross-refs>[4, 5, 6, 7, 9, 10, 11, 12, 13]</cross-refs>
</input>
XSLT 2.0
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:template match="/input">
<output>
<xsl:for-each select="cross-refs">
<xsl:copy>
<xsl:variable name="tokens" select="tokenize(translate(., '[]', ''), ', ')" />
<xsl:for-each-group select="$tokens" group-adjacent="number(.) - position()">
<xsl:value-of select="." />
<xsl:if test="count(current-group()) > 1">
<xsl:text>-</xsl:text>
<xsl:value-of select="current-group()[last()]" />
</xsl:if>
<xsl:if test="position()!=last()">,</xsl:if>
</xsl:for-each-group>
</xsl:copy>
</xsl:for-each>
</output>
</xsl:template>
</xsl:stylesheet>
Result
<?xml version="1.0" encoding="UTF-8"?>
<output>
<cross-refs>5-9</cross-refs>
<cross-refs>4,6-9</cross-refs>
<cross-refs>4-7,9,11-13</cross-refs>
<cross-refs>4-7,9-13</cross-refs>
</output>