Method: Main::GetoptLong#set_options

Defined in:
lib/main/getoptlong.rb

#set_options(*arguments) ⇒ Object

Set options



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# File 'lib/main/getoptlong.rb', line 140

def set_options(*arguments)
  #
  # The method is failed if option processing has already started.
  #
  if @status != STATUS_YET
    raise RuntimeError, 
  "invoke set_options, but option processing has already started"
  end

  #
  # Clear tables of option names and argument flags.
  #
  @canonical_names.clear
  @argument_flags.clear

  arguments.each do |arg|
    #
    # Each argument must be an Array.
    #
    if !arg.is_a?(Array)
  raise ArgumentError, "the option list contains non-Array argument"
    end

    #
    # Find an argument flag and it set to `argument_flag'.
    #
    argument_flag = nil
    arg.each do |i|
  if ARGUMENT_FLAGS.include?(i)
 if argument_flag != nil
   raise ArgumentError, "too many argument-flags"
 end
 argument_flag = i
  end
    end
    raise ArgumentError, "no argument-flag" if argument_flag == nil

    canonical_name = nil
    arg.each do |i|
  #
  # Check an option name.
  #
  next if i == argument_flag
  begin
 if !i.is_a?(String) || i !~ /^-([^-]|-.+)$/
   raise ArgumentError, "an invalid option `#{i}'"
 end
 if (@canonical_names.include?(i))
   raise ArgumentError, "option redefined `#{i}'"
 end
  rescue
 @canonical_names.clear
 @argument_flags.clear
 raise
  end

  #
  # Register the option (`i') to the `@canonical_names' and 
  # `@canonical_names' Hashes.
  #
  if canonical_name == nil
 canonical_name = i
  end
  @canonical_names[i] = canonical_name
  @argument_flags[i] = argument_flag
    end
    raise ArgumentError, "no option name" if canonical_name == nil
  end
  return self
end