[JW Lua] Perform operations on folder files

[Chris]

Hello Jari and all

Is this the right method to perform operations on folder files ?
(LoadFolderFiles and ForEachFile have no filter)

-----------------------------------------
local function getExtension(filename)
     local extension = finale.FCString()
     extension:SetString(filename)
     extension:ExtractFileExtension()
     return extension
end

local function isFinaleExtension(extension)
     local FINALEEXTENSIONS = {"musx","MUSX","mus","MUS"}
     for _ , v in ipairs(FINALEEXTENSIONS) do
         if extension:IsEqual(v) then return true end
     end
     return false
end

local function myfilecallback(doc, filename)
    if not doc then return end
     -- ******* OPERATIONS *********
    print(filename.LuaString)
end



local dialogFolder = finale.FCFolderBrowseDialog(finenv.UI())

if dialogFolder:Execute() then
     local folderPath = finale.FCString()
     dialogFolder:GetFolderPath(folderPath)
     folderPath:AssureEndingPathDelimiter()

     local filenames = finale.FCStrings()
     filenames:LoadFolderFiles(folderPath)

      for filename in each(filenames) do
         local extension = getExtension(filename)

         if isFinaleExtension(extension) then
             filename:InsertString(folderPath,0)
         else
             filename:Clear()
         end
     end
     filenames:ClearEmptyStrings()

     local iterator = finale.FCLuaIterator()
     iterator:ForEachFile(filenames, myfilecallback)
end

-----------------------------------------

Best regards

Chris