CSVLixir v2.0.4 CSVLixir
Reads or writes CSV data. The reader reads a file or a list strings returns a list of lists whose values are of the same type.
The writer takes a list or a list of lists and returns a string containing a single row or newline-separated rows.
Summary
Functions
Given a string, returns a list of lists of strings
Given a path to a file, returns a stream that generates lists of strings
Returns a stream that transforms a list of lists into strings
Given a single list, return a single string
Functions
Given a string, returns a list of lists of strings.
Examples
iex> CSVLixir.parse("abc,def,ghi\n123,456,789")
[["abc","def","ghi"],["123","456","789"]]
iex> CSVLixir.parse(~s{abc,def,"gh"",""i"})
[["abc", "def", "gh\",\"i"]]
iex> f = File.open!("/tmp/csvlixir.csv", [:write])
iex> IO.puts(f, "row,one")
iex> IO.puts(f, "row,two")
iex> File.close(f)
iex> CSVLixir.parse(File.read!("/tmp/csvlixir.csv")) |> Enum.to_list
[["row", "one"], ["row", "two"]]
iex> File.rm("/tmp/csvlixir.csv")
:okGiven a path to a file, returns a stream that generates lists of strings.
Examples
iex> f = File.open!("/tmp/csvlixir.csv", [:write])
iex> IO.puts(f, "row,one")
iex> IO.puts(f, "row,two")
iex> File.close(f)
iex> CSVLixir.read("/tmp/csvlixir.csv")
...> |> Enum.to_list
[["row", "one"], ["row", "two"]]
iex> File.rm("/tmp/csvlixir.csv")
:okReturns a stream that transforms a list of lists into strings.
CSVLixir.write transforms a possibly lazy list of lists into a stream of
CSV strings. Each generated string ends with a newline.
Examples
iex> CSVLixir.write([["first", "row"], [123, 456]])
...> |> Enum.to_list
["first,row\n", "123,456\n"]Writing to a file:
Writing using streams:
iex> f = File.open!("/tmp/csvlixir.csv", [:write])
iex> 1..3
...> |> Stream.map(&([&1, &1+1 ,&1+2]))
...> |> CSVLixir.write
...> |> Stream.each(&(IO.write(f, &1)))
...> |> Stream.run
iex> File.close(f)
iex> File.read!("/tmp/csvlixir.csv")
"1,2,3\n2,3,4\n3,4,5\n"
iex> File.rm("/tmp/csvlixir.csv")
:ok
Writing a line at a time:
iex> f = File.open!("/tmp/csvlixir.csv", [:write, :utf8])
iex> IO.write(f, CSVLixir.write_row(["garçon", "waiter"]))
iex> IO.write(f, CSVLixir.write_row(["résumé", "resume"]))
iex> File.close(f)
iex> File.read!("/tmp/csvlixir.csv")
"garçon,waiter\nrésumé,resume\n"
iex> File.rm("/tmp/csvlixir.csv")
:ok
Don't forget to specify :utf8 when opening the file for writing if
needed. (I often forget.)