FunctX XQuery Function Library > Strings > Trimming and Padding >

functx:trim

Trims leading and trailing whitespace

Description

The functx:trim function removes whitespace at the beginning and end of a string. Unlike the built-in fn:normalize-space function, it only removes leading and trailing whitespace, not whitespace in the middle of the value. Whitespace is defined as it is in XML, namely as space, tab, carriage return and line feed characters. If $arg is the empty sequence, it returns a zero-length string.

Arguments and Return Type

XQuery Function Declaration

declare namespace functx = "http://www.functx.com";
declare function functx:trim
  ( $arg as xs:string? )  as xs:string {

   replace(replace($arg,'\s+$',''),'^\s+','')
 } ;

Examples

functx:trim('   xyz   ')

xyz

functx:trim('   xyz')

xyz

functx:trim('x   xyz  ')

x   xyz

See Also

History