1 files changed, 41 insertions, 0 deletions
diff --git a/lib/irc/parser/isupport.ex b/lib/irc/parser/isupport.ex
new file mode 100644
index 0000000..9dd7f30
--- /dev/null
+++ b/lib/irc/parser/isupport.ex
@@ -0,0 +1,41 @@
+defmodule Irc.Parser.Isupport do
+  @moduledoc """
+  ISUPPORT list parser
+  """
+
+  def parse(list, acc \\ %{}) do
+    list = List.flatten(list)
+    Enum.reduce(list, acc, fn(entry, acc) ->
+      case String.split(entry, "=", parts: 2) do
+        [entry] ->
+          if String.contains?(entry, " ") do
+            acc
+          else
+            Map.put(acc, entry, true)
+          end
+        [entry, value] -> Map.put(acc, entry, parse_value(value))
+      end
+    end)
+  end
+
+  defp parse_value(value) do
+    if String.contains?(value, ":") do
+      Enum.reduce(String.split(value, ","), %{}, fn(key_and_value, acc) ->
+        case String.split(key_and_value, ":", parts: 2) do
+          [key] -> Map.put(acc, key, nil)
+          [key, value] -> Map.put(acc, key, format_value(value))
+        end
+      end)
+    else
+        format_value(value)
+    end
+  end
+
+  def format_value(value) do
+    case Integer.parse(value) do
+      {i, ""} -> i
+      _ -> value
+    end
+  end
+
+end