Hello

I’m trying to process a .zip file “on-the-fly” using :zip.foldl/2. The way I understand the documentation, this function iterates over the files inside the ZIP. In the callback I get a function GetBin to get the content of the current file.

My Problem: When calling that function GetBin, I get a :data_error. Here’s the code:

iex> :zip.foldl(
  fn _, _, get_bin, _ -> dbg(get_bin.()) end, 
  nil, 
  String.to_charlist("path/to/my.zip")
) 

** (ErlangError) Erlang error: :data_error
    :zlib.inflate_nif(#Reference<0.1295784330.1440088067.199893>, 8192, 16384, 0)
    :zlib.dequeue_all_chunks_1/3
    :zlib.inflate/3
    :prim_zip.get_z_all/4

Just to rule out some things, this code works:

iex> :zip.foldl(
  fn filename, _, _, _ -> IO.puts(filename) end, 
  nil, 
  String.to_charlist("path/to/my.zip")
) 

file1
file2
file3
{:ok, :ok}

Version: IEx 1.15.4 (compiled with Erlang/OTP 26)

Does anybody know how to make this work?
Thanks!