generating a document with list of files in a directory using xslt 2.0

I have a bunch of folder with party xml files and partly binary image files.

I am generating a list of those files, using the following:

    <xsl:variable name="string" select="iri-to-uri(concat(@name, '/?select=*.(xml|gxf)'))"/>
    <xsl:variable name="input" select="collection($string)"/>
    <xsl:for-each select="$input">
    <file>
    <xsl:value-of select="tokenize(document-uri(.), '/')[last()]"/>
    </file>
    </xsl:for-each>

Works well, except of course for the binary files. How could I get the uri of those files? Is that possible with pure xslt 2.0 using saxon9he?