XPointer

StringRangeWithXquery

declare function local:getIndex(){
   let $doc :=
      <div xml:id="transcription">
         <h1 xml:id="c1">Sélectionnez une portion de texte pour obtenir sa position</h1>
         <p xml:id="c2">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Asperiores cumque dignissimos dolore et, facilis iure iusto laborum neque, officiis quas quis velit? Dolor iure libero non optio repudiandae. Error, nulla.</p>
         <p xml:id="c3">Lorem ipsum dolor sit amet, <span>consectetur</span> adipisicing elit. <span>Asperiores</span> cumque dignissimos dolore et, facilis iure iusto laborum neque, officiis quas quis velit? Dolor iure libero non optio repudiandae. Error, nulla.</p>
      </div>

   (: $xpointer récupéré depuis le doc html avec le couple JS/XForms :)
   let $xpointer := ("//p[@xml:id='c3']", "consectetur adipisicing")

   let $xpath := local:getXpath($xpointer[1])

   let $conteneur := fn:normalize-space($doc//*[fn:local-name() = $xpath[1]][@xml:id=$xpath[2]])

   return (
      "index : " || fn:string-length(fn:substring-before($conteneur, $xpointer[2]))+1,
      "length : " || fn:string-length($xpointer[2])
   )
};



declare function local:getXpath($xpath){
   let $node := fn:substring-before($xpath, "[") => fn:substring-after("//")
   let $id := fn:substring-before($xpath, "']") => fn:substring-after( "='")
   return ($node, $id)
};


local:getIndex()