erl_csv is a pure Erlang library to encode and decode csv files.

Examples:

Encoding

    DataSchema = [<<"city">>, <<"country">>, <<"continent">>],
    DataRows = [
          [<<"Madrid">>, <<"Spain">>, <<"Europe">>],
          [<<"Krakow">>, <<"Poland">>, <<"Europe">>],
          [<<"Berlin">>, <<"Germany">>, <<"Europe">>],
          [<<"New York">>, <<"USA">>, <<"America">>],
          [<<"Sidney">>, <<"Australia">>, <<"Asia">>]
    ],
    Encoded = erl_csv:encode([DataSchema | DataRows]),

Then, in a single readable binary as iolist_to_binary(Encoded), we will see:

    <<"city,country,continent\nMadrid,Spain,Europe\nKrakow,Poland,Europe\nBerlin,Germany,Europe\nNew York,USA,America\nSidney,Au"...>>

Decoding

If we are reading a file, we can decode as a stream as follows:

    {ok, CsvStream} = erl_csv:decode_new_s(Filename),
    {ok, do_import(CsvStream, WorkersQueue)};

do_import(stream_end, Decoded) ->
    lists:reverse(Decoded);
do_import(Stream, Decoded) ->
    {ok, MoreDecoded, MoreStream} = erl_csv:decode_s(Stream),
    do_import(MoreStream, [MoreDecoded | Decoded]).

More details

See the documentation for more details.