Class: Nrename::Options

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Defined in:
lib/nrename/options.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Options

Returns a new instance of Options.



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# File 'lib/nrename/options.rb', line 11

def initialize
  self.class.def_delegators :options, *default_options.keys
end

Instance Method Details

#default_options ⇒ Object 



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# File 'lib/nrename/options.rb', line 15

def default_options
  {
  :numbers_only => false,
  :dirs         => Set.new,
  :execute      => false,
  :pattern      => /(\d+)/,
  :recursive    => false,
  :rename_dirs  => false,
  :renumber     => false,
  :verbose      => true
  }
end

#extract_dirs(args) ⇒ Object 



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# File 'lib/nrename/options.rb', line 107

def extract_dirs(args)
  dirs = Set.new

  args.each do |arg|
    dir = File.expand_path arg
    if File.directory? dir
      dirs << dir
    else
      warn "#{dir} is not a valid directory."
      exit 1
    end
  end

  if options.recursive
    dirs.dup.each do |dir|
      dirs.merge Utils.all_subdirs_of dir
    end
  end

  dirs
end

#options ⇒ Object 



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# File 'lib/nrename/options.rb', line 28

def options
  @options ||= OpenStruct.new default_options
end

#parse(args) ⇒ Object 



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# File 'lib/nrename/options.rb', line 88

def parse(args)
  # Display help if called through 'nrename' executable and without arguments:
  if args.empty? && Nrename.executable_name == 'nrename'
    args << '--help'
  end

  parser.parse! args

  if !options.execute && Nrename.executable_name == 'nrename'
    at_exit do
      warn 'No renaming is done. Run with -X option to perform actual changes.'
    end
  end

  options.dirs = extract_dirs args

  self
end

#parser ⇒ Object 



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# File 'lib/nrename/options.rb', line 36

def parser
  OptionParser.new do |opts|
    opts.banner = "Usage: #{Nrename.executable_name} [OPTINS] DIR..."

    opts.separator ''
    opts.separator 'Options:'

    opts.on '-X', '--execute', "Do actual work" do |x|
      options.execute = x
    end

    opts.on '-R', '--recursive',
    'Process given directories recursively' do |rec|
      options.recursive = rec
    end

    opts.on '-N', '--numbers-only',
    'Leave only numbers in file name' do |n|
      options.numbers_only = n
    end

    opts.on '-D', '--rename-dirs',
    'Rename only directories instead of regular files' do |d|
      options.rename_dirs = d
    end

    opts.on '--renumber',
    'Renumber files from starting from 1 and on' do |renum|
      options.renumber = renum
    end

    opts.on '--regexp REGEXP', Regexp,
    'Use REGEXP to match filenames' do |regexp|
      options.pattern = regexp
    end

    opts.on '-v', '--[no-]verbose', 'Run verbosely' do |v|
      options.verbose = v
    end

    opts.on '-h', '--help', 'Display this message' do
      puts opts
      exit
    end

    opts.on '--version', 'Display version' do
      puts VERSION
      exit
    end
  end
end

#reset ⇒ Object 



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# File 'lib/nrename/options.rb', line 32

def reset
  @options = nil
end