Loop through all the files in a directory with Corona and Lua

Is it possible in Corona SDK to get a list of all the files in a directory? Say I have variable开发者_StackOverflow社区 resourceDir = system.ResourceDirectory, how would I loop through all the files in resourceDir?

This functionality has just been added with Corona including the LuaFileSystem module:

local lfs = require "lfs"

local doc_path = system.pathForFile( "", system.DocumentsDirectory )

for file in lfs.dir(doc_path) do
    -- file is the current file or directory name
    print( "Found file: " .. file )
end

More info: http://blog.anscamobile.com/2012/05/luafilesystem-lfs-tutorial/

Currently Corona doesn't support getting a list of files in a directory. There was a hack that used os.excute to issue a "ls" command but it turns out that only works in the Corona Simulator because the device OS is probably blocking the feature for security reasons.