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(:**************************************************************:)
(: Test: functx-functx-index-of-string-1 :)
(: Written by: Priscilla Walmsley (Frans Englich is maintainer) :)
(: Date: 2008-05-16+02:00 :)
(:**************************************************************:)
declare namespace functx = "http://www.example.com/";
(:~
: The position(s) of a substring
:
: @author Priscilla Walmsley, Datypic
: @version 1.0
: @see http://www.xqueryfunctions.com/xq/functx_index-of-string.html
: @param $arg the string
: @param $substring the substring to find
:)
declare function functx:index-of-string
( $arg as xs:string? ,
$substring as xs:string ) as xs:integer* {
if (contains($arg, $substring))
then (string-length(substring-before($arg, $substring))+1,
for $other in
functx:index-of-string(substring-after($arg, $substring),
$substring)
return
$other +
string-length(substring-before($arg, $substring)) +
string-length($substring))
else ()
} ;
(functx:index-of-string('abcdabcdabcd','abc'))
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