Support returning info data

Helpful if someone wants to use the generated Info data, but doesn't
want to jump through the hoops of capturing IO

lib/vintage_net.ex

@@ -100,9 +100,11 @@ defmodule VintageNet do
   @typedoc """
   Valid options for `VintageNet.info/1`
 
+  * `:into` - Specify an implementation of `Collectable` to send the chardata
+    result into. (defaults to `IO.stream(:stdio, :line)`)
   * `:redact` - Whether to hide passwords and similar information from the output (defaults to `true`)
   """
-  @type info_options :: {:redact, boolean()}
+  @type info_options :: [redact: boolean()]
 
   @typedoc """
   A VintageNet property
@@ -356,9 +358,11 @@ defmodule VintageNet do
 
   Options include:
 
+  * `:into` - Specify an implementation of `Collectable` to send the chardata
+    result into. (defaults to `IO.stream(:stdio, :line)`)
   * `:redact` - Set to `false` to print out passwords
   """
-  @spec info([info_options()]) :: :ok
+  @spec info(info_options()) :: :ok
   defdelegate info(options \\ []), to: Info
 
   @doc """

lib/vintage_net/info.ex

@@ -6,15 +6,25 @@ defmodule VintageNet.Info do
   @doc """
   Print the current network status
   """
-  @spec info([VintageNet.info_options()]) :: :ok
+  @spec info(VintageNet.info_options()) :: :ok
   def info(opts \\ []) do
+    info_as_ansidata(opts)
+    |> IO.ANSI.format()
+    |> IO.puts()
+  end
+
+  @doc """
+  Format the information as ANSI data
+  """
+  @spec info_as_ansidata(VintageNet.info_options()) :: IO.ANSI.ansidata()
+  def info_as_ansidata(opts \\ []) do
     case vintage_net_app_info() do
       {:ok, text} ->
         ifnames = interfaces_to_show()
-        IO.write([text, format_header(), format_interfaces(ifnames, opts)])
+        [text, format_header(), format_interfaces(ifnames, opts)]
 
       {:error, text} ->
-        IO.puts(text)
+        text
     end
   end
 
@@ -29,7 +39,7 @@ defmodule VintageNet.Info do
   end
 
   defp format_interfaces([], _opts) do
-    "No interfaces"
+    "No interfaces\n\n"
   end
 
   defp format_interfaces(ifnames, opts) do

test/vintage_net/info_test.exs

@@ -99,6 +99,16 @@ defmodule VintageNet.InfoTest do
     assert output =~ "No interfaces"
   end
 
+  test "info_as_ansidata can return ansidata" do
+    output = Info.info_as_ansidata()
+    assert is_list(output)
+    output_str = to_string(output)
+
+    assert output_str =~ "All interfaces"
+    assert output_str =~ "Available interfaces"
+    assert output_str =~ "No interfaces"
+  end
+
   test "info works with a configured interface" do
     capture_log(fn ->
       :ok = VintageNet.configure("eth0", %{type: VintageNetTest.TestTechnology})