class Buryspam::CommandLine

A simple class to help process command line options and enforce any restrictions. Simply instantiate a CommandLine object and the mode, arg and overrides instance variables will be set. Because this is a singleton class, its (only) instance must be created with the instance method (and not new).

Constants

OPTS: Command line options and arguments. NOTE: The Help class is sensitive to the formatting of this section.

Attributes

arg[R]

mode[R]

overrides[R]

Public Class Methods

new() click to toggle source

Parse the command line arguments, making sure things are okay. Stores the option mode and the argument of the option plus any configuration overrides, if any, specified by --override

# File buryspam.rb, line 1481
def initialize
  begin
    @mode = nil
    OPTS.each do |opt, arg|
      # Treat --override specially since it can be used in conjunction
      # with other modes.
      if opt == '--override'
        (@overrides ||= []) << arg
        next
      end
      unless @mode.nil?
        raise Error, "Cannot operate in two modes: --#{@mode} and #{opt}."
      end
      @mode = opt.gsub(/^--/, "").to_sym
      case @mode
        when :grep
          @arg = Config::Converter.regex(@mode, arg)
        when :help, :log
          @arg = arg
      end
    end
  rescue GetoptLong::MissingArgument,
         GetoptLong::InvalidOption
    raise Error, "Use the '-h' option to get help."
  end

  # Filter, decode, grep and color modes treat the remaining command line
  # arguments as mboxes.  If we are not in any of these modes, but there are
  # still command line arguments available, then ignore the remaining command
  # line arguments with a warning.
  unless ARGV.size == 0 || [:filter, :decode, :grep, :colour].include?(@mode)
    $stderr.puts "Warning: superfluous command line arguments ignored."
    ARGV.clear
  end
end