piotrmurach/tty-prompt

# frozen_string_literal: true

module TTY
  # A class responsible for shell prompt interactions.
  class Prompt
    # A class representing a statement output to prompt.
    class Statement
      # Flag to display newline
      #
      # @api public
      attr_reader :newline

      # Color used to display statement
      #
      # @api public
      attr_reader :color

      # Initialize a Statement
      #
      # @param [TTY::Prompt] prompt
      #
      # @param [Hash] options
      #
      # @option options [Symbol] :newline
      #   force a newline break after the message
      #
      # @option options [Symbol] :color
      #   change the message display to color
      #
      # @api public
      def initialize(prompt, newline: true, color: false)
        @prompt  = prompt
        @newline = newline
        @color   = color
      end

      # Output the message to the prompt
      #
      # @param [String] message
      #   the message to be printed to stdout
      #
      # @api public
      def call(message)
        message = @prompt.decorate(message, *color) if color

        if newline && /( |\t)(\e\[\d+(;\d+)*m)?\Z/ !~ message
          @prompt.puts message
        else
          @prompt.print message
          @prompt.flush
        end
      end
    end # Statement
  end # Prompt
end # TTY