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|
defmodule Irc.Parser.Numeric do
require Logger
@moduledoc """
Helpers for using IRC Numerics.
* Use macros to translate from `rpl_MOTDSTART` (a macro is generated for every numeric name).
* Convert a numeric to its name (name_numeric())
* Convert a name to its numeric (to_numeric())
* Check if a numeric is an error (error_numeric?())
"""
defmacro __using__(_) do
quote do
alias Irc.Parser.Numeric
require Irc.Parser.Numeric
import Irc.Parser.Numeric
end
end
@numerics File.read!(Path.join(:code.priv_dir(:irc), "numerics.txt"))
|> String.split("\n")
|> Enum.map(fn(line) ->
case String.split(String.trim(line), " ", parts: 2) do
["#"<>_, _] -> nil
["#"<>_] -> nil
[numeric, full_name = "ERR_" <> name] -> {numeric, name, true, full_name}
[numeric, full_name = "RPL_" <> name] -> {numeric, name, false, full_name}
line ->
Logger.debug "Invalid line in numeric.txt: #{inspect line}"
end
end)
|> Enum.filter(fn(n) -> n end)
for {num, name, error, full_name} <- @numerics do
prefix = if error, do: "err_", else: "rpl_"
fname = "#{prefix}#{name}" |> String.to_atom()
defmacro unquote(fname)() do
unquote(num)
end
def error_numeric?(unquote(num)) do
unquote(error)
end
def error_numeric?(unquote(name)) do
unquote(error)
end
def error_numeric?(unquote(full_name)) do
unquote(error)
end
def name_numeric(unquote(num)) do
unquote(full_name)
end
def to_numeric(unquote(num)) do
unquote(num)
end
def to_numeric(unquote(name)) do
unquote(num)
end
def to_numeric(unquote(fname)) do
unquote(num)
end
def to_numeric(unquote(full_name)) do
unquote(num)
end
end
end
|
