FunctX XSLT Function Library > Strings > Substrings >

functx:substring-before-if-contains

Performs substring-before, returning the entire string if it does not contain the delimiter

Description

The functx:substring-before-if-contains function performs substring-before, returning the entire string if it does not contain the delimiter. It differs from the built-in fn:substring-before function, which returns a zero-length string if the delimiter is not found.

Arguments and Return Type

XSLT Function Declaration

<xsl:function name="functx:substring-before-if-contains" as="xs:string?"
              xmlns:functx="http://www.functx.com">
  <xsl:param name="arg" as="xs:string?"/>
  <xsl:param name="delim" as="xs:string"/>

  <xsl:sequence select="
   if (contains($arg,$delim))
   then substring-before($arg,$delim)
   else $arg
 "/>

</xsl:function>

Examples

functx:substring-before-if-contains('abcd','c')

ab

functx:substring-before-if-contains('abcd','x')

abcd

See Also

History