getFileSize

<%
    ' Copyright (c) 2009, reusablecode.blogspot.com; some rights reserved.
    '
    ' This work is licensed under the Creative Commons Attribution License. To view
    ' a copy of this license, visit http://creativecommons.org/licenses/by/3.0/ or
    ' send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California
    ' 94305, USA.
 
    ' Retrieve the file size of a given file.
    function getFileSize(someFile)
        dim fs
        dim file
 
        set fs = Server.CreateObject("Scripting.FileSystemObject")
        set file = fs.GetFile(Server.MapPath(someFile))
 
        getFileSize = FormatFileSize(file.size)
        set file = nothing
        set fs = nothing
    end function
 
    ' Format a file size in the most practical units.
    ' Input: size in bytes
    function FormatFileSize(size)
        dim units
        dim factor
 
        units = Array("B", "kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB")
        factor = log(size) \ 7
 
        FormatFileSize = Round(size / (1024 ^ factor), 2) & units(factor)
    end function
%>