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functx:scheme-from-uri

Returns the scheme from a URI

Description

The functx:scheme-from-uri function returns the scheme part of a URI, for example http or ftp, which appears before the colon. If there is no scheme (because it is a relative URI), a zero-length string is returned.

Arguments and Return Type

XQuery Function Declaration

declare namespace functx = "http://www.functx.com";
declare function functx:scheme-from-uri
  ( $uri as xs:string? )  as xs:string? {

   substring-before($uri,':')
 } ;

Examples

functx:scheme-from-uri(
   'http://www.datypic.com')

http

functx:scheme-from-uri(
   'ftp://ftp.datypic.com')

ftp

functx:scheme-from-uri('ftp.datypic.com')

functx:scheme-from-uri('www.datypic.com')

functx:scheme-from-uri('prod.html')

See Also

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