#
# Copyright:: Copyright (c) 2014 Chef Software Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

module ChefDK
  class UI

    class NullStream

      def puts(*anything)
        nil
      end

      def print(*anything)
        nil
      end

    end

    def self.null
      new(out: NullStream.new, err: NullStream.new)
    end

    attr_reader :out_stream
    attr_reader :err_stream

    def initialize(out: nil, err: nil)
      @out_stream = out || $stdout
      @err_stream = err || $stderr
    end

    def err(message)
      @err_stream.puts(message)
    end

    def msg(message)
      @out_stream.puts(message)
    end

    def print(message)
      @out_stream.print(message)
    end
  end
end