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|
defmodule Hex.Netrc.Parser do
@moduledoc false
def parse(path \\ netrc_path()) when is_binary(path) do
case File.read(path) do
{:ok, contents} ->
parse_contents(contents)
error ->
error
end
end
defp parse_contents(contents) when is_binary(contents) do
parse_result =
contents
|> String.trim()
|> String.split("\n", trim: true)
|> Enum.map(&String.split/1)
|> Enum.reduce({%{}, nil}, &parse_line/2)
case parse_result do
{machines, %{username: _, password: _} = current} ->
{host, machine} = Map.pop(current, :host)
{:ok, Map.put(machines, host, machine)}
_ ->
{:error, :parse}
end
end
defp parse_line(_, :parse_error), do: :parse_error
defp parse_line(["machine", host], {machines, nil}) do
{machines, %{host: host}}
end
defp parse_line(["machine", next_host], {machines, %{username: _, password: _} = current}) do
{host, machine} = Map.pop(current, :host)
{Map.put(machines, host, machine), %{host: next_host}}
end
defp parse_line(["login", username], {machines, %{} = current}) do
{machines, Map.put(current, :username, username)}
end
defp parse_line(["password", password], {machines, %{} = current}) do
{machines, Map.put(current, :password, password)}
end
defp parse_line(_line, _parse_state), do: :parse_error
def netrc_path() do
System.get_env("NETRC") || default_path()
end
defp default_path() do
Path.join(System.user_home!(), ".netrc")
end
end
|
