FunctX XSLT Functions

FunctX XSLT Function Library > Strings > Substrings >

fn:substring-before

The substring before the first occurrence of a delimiter

Description

The fn:substring-before function extracts all the characters of a string ($arg1) that appear before the first occurrence of another specified string ($arg2).

This description is © Copyright 2007, O'Reilly Media. It is excerpted from the book XQuery by Priscilla Walmsley, O'Reilly, 2007. For a complete explanation of this function, please refer to Appendix A of the book.

Arguments and Return Type

Name	Type	Description
`$arg1`	`xs:string?`	the entire string
`$arg2`	`xs:string?`	the string that ends the substring
`$collation`	`xs:string`	the collation to use to compare strings
return value	`xs:string`

Examples

XSLT Example	Results
`substring-before('query', 'r')`	`que`
`substring-before('query', 'ery')`	`qu`
`substring-before('queryquery', 'ery')`	`qu`
`substring-before('query', 'query')`	zero-length string
`substring-before('query', 'x')`	zero-length string
`substring-before('query', '')`	zero-length string
`substring-before('query', ())`	zero-length string

functx:substring-before-last	The substring before the last occurrence of a delimiter
functx:substring-before-if-contains	Performs substring-before, returning the entire string if it does not contain the delimiter
fn:substring	A substring based on a starting point and optional length
fn:substring-after	The substring after the first occurrence of a delimiter

History

Published On	Last Updated	Contributor(s)
2006-06-27	2007-02-26	W3C, XQuery 1.0 and XPath 2.0 Functions and Operators, http://www.w3.org/TR/xpath-functions/

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