Class: Renamr::Configurator

Inherits:
Object
  • Object
show all
Defined in:
lib/renamr/configurator.rb

Overview

Parses and validates command-line options.

Constant Summary collapse

DIC = 
[
  ['-a', '--act',     'Performs actual renaming.',          :act],
  ['-d', '--dir dir', 'Directory to process.',              :dir],
  ['-l', '--lim',     'Limits file name length.',           :lim],
  ['-m', '--mod',     'Prepends file modification time.',   :mod],
  ['-r', '--rec',     'Processes directories recursively.', :rec],
  ['-s', '--src src', 'String to replace.',                 :src],
  ['-t', '--dst dst', 'Replacement string.',                :dst],
  ['-w', '--wid wid', 'Output table width.',                :wid]
].freeze

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Configurator

Returns a new instance of Configurator.



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# File 'lib/renamr/configurator.rb', line 60

def initialize
  @options = {}
  OptionParser.new do |o|
    o.banner = "Usage: #{File.basename($PROGRAM_NAME)} [options]."
    add(o)
  end.parse!
  validate
end

Instance Method Details

#act? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/renamr/configurator.rb', line 80

def act?
  @options[:act]
end

#add(opt) ⇒ Object 



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# File 'lib/renamr/configurator.rb', line 50

def add(opt)
  add_simple(opt, :act)
  add_cut(opt)
  %i[dir lim mod].each { |k| add_simple(opt, k) }
  add_prepend(opt)
  %i[rec src dst].each { |k| add_simple(opt, k) }
  add_version(opt)
  add_simple(opt, :wid)
end

#add_cut(opt) ⇒ Object 



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# File 'lib/renamr/configurator.rb', line 28

def add_cut(opt)
  msg = 'Removes len characters starting at pos.'
  opt.on('-c', '--cut pos,len', Array, msg) do |l|
    @options[:pos] = l[0]
    @options[:len] = l[1]
  end
end

#add_prepend(opt) ⇒ Object 



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# File 'lib/renamr/configurator.rb', line 36

def add_prepend(opt)
  opt.on('-p', '--prepend str,beg', Array, 'Prepends a string.') do |l|
    @options[:pre] = l[0]
    @options[:beg] = l[1].nil? ? 0 : l[1].to_i
  end
end

#add_simple(opt, key) ⇒ Object 



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# File 'lib/renamr/configurator.rb', line 23

def add_simple(opt, key)
  f, p, d = DIC.find { |_, _, _, k| k == key }
  opt.on(f, p, d) { |i| @options[key] = i }
end

#add_version(opt) ⇒ Object 



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# File 'lib/renamr/configurator.rb', line 43

def add_version(opt)
  opt.on('-v', '--version', 'Shows the version.') do
    puts "#{File.basename($PROGRAM_NAME)} #{VERSION} #{DATE}"
    exit
  end
end

#beg ⇒ Object 



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# File 'lib/renamr/configurator.rb', line 112

def beg
  @options[:beg]
end

#dir ⇒ Object 



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# File 'lib/renamr/configurator.rb', line 96

def dir
  @options[:dir]
end

#dst ⇒ Object 



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# File 'lib/renamr/configurator.rb', line 104

def dst
  @options[:dst]
end

#len ⇒ Object 



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# File 'lib/renamr/configurator.rb', line 120

def len
  @options[:len]
end

#lim? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/renamr/configurator.rb', line 88

def lim?
  @options[:lim]
end

#mod? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/renamr/configurator.rb', line 92

def mod?
  @options[:mod]
end

#pos ⇒ Object 



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# File 'lib/renamr/configurator.rb', line 116

def pos
  @options[:pos]
end

#pre ⇒ Object 



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# File 'lib/renamr/configurator.rb', line 108

def pre
  @options[:pre]
end

#rec? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/renamr/configurator.rb', line 84

def rec?
  @options[:rec]
end

#src ⇒ Object 



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# File 'lib/renamr/configurator.rb', line 100

def src
  @options[:src]
end

#validate ⇒ Object 



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# File 'lib/renamr/configurator.rb', line 69

def validate
  if dir.nil?
    @options[:dir] = Dir.pwd
  else
    raise "No such directory: #{dir}." unless File.directory?(dir)

    @options[:dir] = File.expand_path(dir)
  end
  raise "Table width must be at least 15 characters: #{wid}." if wid < 15
end

#wid ⇒ Object 



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# File 'lib/renamr/configurator.rb', line 124

def wid
  if @options[:wid].nil?

    # Reads the current terminal width.
    wid = `tput cols`
    wid.to_s.empty? ? 79 : wid.to_i
  else
    @options[:wid].to_i
  end
end