id3tag.rb

#!/usr/bin/env ruby

require 'optparse'
require 'rubygems'
require 'id3lib'

Version = '0.0.1'

options = []

ARGV.options do |o|
  o.banner = 'usage: id3tag [options] mp3file'
  o.separator('id3tag - show id3 info')
  o.separator('')

  o.on('-A', '--all', 'all infos') do |u|
    options = [:title, :artist, :album, :year]
  end

  o.on('-t', '--title', 'title') do |u|
    options << :title
  end

  o.on('-a', '--artist', 'artist') do |u|
    options << :artist
  end

  o.on('-l', '--album', 'album') do |u|
    options << :album
  end

  o.on('-y', '--year', 'year') do |u|
    options << :year
  end

  o.on_tail('-V', '--version', 'Show version') do
    puts o.ver
    puts 'Written by BadBoy_'
    puts
    puts 'Copyright (C) 2008 BadBoy_ <http://badboy.pytalhost.de/>'
    puts 'This is free software released under Creative Common License'
    puts '<http://creativecommons.org/licenses/by-nc-sa/3.0/de/>'
    exit
  end

end
ARGV.parse!
file = ARGV.shift
if file
  if options.size == 0
    STDERR.puts "no option given! use #{$0} -h for more"
    exit 1
  end
  tag = ID3Lib::Tag.new file
  options.each do |val|
    puts "#{val}: #{tag.send(val)}"
  end
else
 STDERR.puts "no file given! use #{$0} -h for more"
 exit 1
end