wip: add commit-info command

lib/log.rb

@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+class Log
+  extend Forwardable
+
+  attr_reader :name
+  attr_reader :level
+
+  def initialize(name, level = :info)
+    @name = name
+    @level = level
+  end
+
+  def_delegators :logger, :debug, :info, :warn, :error, :fatal, :unkonwn
+
+  private
+
+  def logger
+    @logger ||= Logger.new($stderr).tap do |l|
+      l.progname = name
+      l.level = level
+      l.formatter = formatter
+    end
+  end
+
+  def formatter
+    proc do |severity, _datetime, progname, msg|
+      "==> [#{progname}] #{severity}: #{msg}\n"
+    end
+  end
+end