file = {}

function file.Exists(file)
	local f = io.open(file,"r")
	if f~=nil then f:close() end
	return f~=nil
end

function file.Read(file)
	if not file.Exists(file) then return false end
	local f = io.open(file,"r")
	local fr = f:read("*all")
	f:close()
	return fr
end

function file.Write(file,write)
	if not file.Exists(file) then return false end
	local f = io.open(file,"w")
	f:write(write)
	f:close()
	return true
end

function file.Append(file,write)
	local read = file.Read(file)
	if not read then return false end
	if not file.Write(file,read..write) then return false end
	return true 
end