Determine the position and content of an item in a string sequence

Issue

We have a sequence of strings and for each item we need the position of the item within the sequence

Resolution

use the following xpath expression

Xquery

let
  $items := tokenize('xslt-tricks.blogspot.co.uk/search/label/xquery','/')
return
  for $i in 1 to count($items) 
  return (
   $i, (: position  :)
   $items[$i]  (: item content :)
  )

Xpath to generate an xpath string to the current item

An xpath to be used in either xquery or XSLT to generate the heirarchical path to the current item

string-join(
   (for $node in ancestor::* 
    return 
      concat($node/name(),
              '[', 
              count($node/preceding-sibling::*[name() = $node/name()])+1, 
              ']'
            ),
      concat(name(),
              '[', 
              count(preceding-sibling::*[name() = current()/name()]) + 1, 
              ']'
            )
    ),
  '/')