Initial commit

lib/iban_ex/validator/replacements.ex

@@ -0,0 +1,46 @@
+defmodule IbanEx.Validator.Replacements do
+  @moduledoc """
+  Replacements in IBANs for checksums calculations
+  """
+
+  import IbanEx.Commons, only: [normalize: 1]
+
+  @type symbol() :: <<_::8>>
+  @type value() :: <<_::16>>
+  @type replacements() :: %{symbol() => value()}
+
+  @replacements %{
+    "A" => "10",
+    "B" => "11",
+    "C" => "12",
+    "D" => "13",
+    "E" => "14",
+    "F" => "15",
+    "G" => "16",
+    "H" => "17",
+    "I" => "18",
+    "J" => "19",
+    "K" => "20",
+    "L" => "21",
+    "M" => "22",
+    "N" => "23",
+    "O" => "24",
+    "P" => "25",
+    "Q" => "26",
+    "R" => "27",
+    "S" => "28",
+    "T" => "29",
+    "U" => "30",
+    "V" => "31",
+    "W" => "32",
+    "X" => "33",
+    "Y" => "34",
+    "Z" => "35"
+  }
+
+  @spec replacements() :: replacements()
+  def replacements(), do: @replacements
+
+  @spec replace(symbol()) :: value()
+  def replace(symbol), do: @replacements[normalize(symbol)] || normalize(symbol)
+end