Allows posting raw values to node

lib/ipfs.ex

@@ -48,6 +48,14 @@ defmodule IPFS do
     request(conn, path, &HTTPoison.post(&1, multipart(filename), params: params))
   end
 
+  @doc """
+  High level function which allows to send a raw value to the node, say, a JSON encoded value.
+  """
+  @spec post_raw(t, String.t(), String.t(), Sring.t(), keyword) :: result
+  def post_raw(conn, path, content, filename, params \\ []) do
+    request(conn, path, &HTTPoison.post(&1, raw_multipart(content, filename), params: params))
+  end
+
   # Private stuff.
 
   @typep poison_result :: {:ok, Response.t() | AsyncResponse.t()} | {:error, Error.t()}
@@ -90,6 +98,13 @@ defmodule IPFS do
      [{:file, filename, {"form-data", [name: Path.basename(filename), filename: filename]}, []}]}
   end
 
+  defp raw_multipart(content, name) do
+    {:multipart,
+     [
+       {"file", content, {"form-data", [name: "file", filename: name]}, []}
+     ]}
+  end
+
   defimpl String.Chars, for: IPFS do
     def to_string(%{scheme: scheme, host: host, port: port, base: base}) do
       ["#{scheme}://#{host}:#{port}", base]

lib/ipfs/api.ex

@@ -1,7 +1,7 @@
 defmodule IPFS.API do
   @moduledoc false
 
-  import IPFS, only: [get: 2, get: 3, post_file: 4]
+  import IPFS, only: [get: 2, get: 3, post_file: 4, post_raw: 5]
   import IPFS.Utils, only: [remap_fields: 2, remap_array: 2, successify_with: 1, okify: 1]
 
   @type t :: IPFS.t()
@@ -101,6 +101,13 @@ defmodule IPFS.API do
     |> okify
   end
 
+  def add_raw(conn, content, name, params \\ []) do
+    conn
+    |> post_raw("add", content, name, params)
+    |> remap_fields(name: "Name", hash: "Hash", size: "Size")
+    |> okify()
+  end
+
   # Pinning.
 
   @doc "List all pins registered on this node."