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lib/credo/cli/output/shell.ex

defmodule Credo.CLI.Output.Shell do
use GenServer
def start_link(opts \\ []) do
{:ok, _pid} = GenServer.start_link(__MODULE__, opts, name: __MODULE__)
end
def puts do
puts("")
end
def puts(value) do
GenServer.call(__MODULE__, {:puts, value})
end
def use_colors(use_colors) do
GenServer.call(__MODULE__, {:use_colors, use_colors})
end
@doc "Like `puts`, but writes to `:stderr`."
def warn(value) do
GenServer.call(__MODULE__, {:warn, value})
end
# callbacks
def init(_) do
{:ok, %{use_colors: true}}
end
def handle_call({:use_colors, use_colors}, _from, current_state) do
new_state = Map.put(current_state, :use_colors, use_colors)
{:reply, nil, new_state}
end
def handle_call({:puts, value}, _from, %{use_colors: true} = current_state) do
Bunt.puts(value)
{:reply, nil, current_state}
end
def handle_call({:puts, value}, _from, %{use_colors: false} = current_state) do
value
|> List.wrap
|> List.flatten
|> Enum.reject(&is_atom/1)
|> Bunt.puts
{:reply, nil, current_state}
end
def handle_call({:warn, value}, _from, %{use_colors: true} = current_state) do
Bunt.warn(value)
{:reply, nil, current_state}
end
def handle_call({:warn, value}, _from, %{use_colors: false} = current_state) do
value
|> List.wrap
|> List.flatten
|> Enum.reject(&is_atom/1)
|> Bunt.warn
{:reply, nil, current_state}
end
end