Sort pictures by date

sort_pics.rb

#!/usr/bin/env ruby

require 'fileutils'
require 'exifr'

def parse_options
  if ARGV.size != 2
    puts "Invalid parameters"
    exit 1
  end

  options = {}
  options[:input_dir] = ARGV[0]
  options[:output_dir] = ARGV[1]

  return options
end

def load_pics(options)
 pics = {}

 files = Dir["#{options[:input_dir]}/**/*.{JPG,jpg,jpeg,JPEG}"]
 files.each do |filename|
   pics[filename] = EXIFR::JPEG.new(filename).date_time
 end

 return pics
end

def copy(pics, options)
  pics.each do |filename, date|
    dst_dir = File.join(options[:output_dir], date.year.to_s, date.month.to_s.rjust(2, '0'), date.day.to_s.rjust(2, '0'))
    dst = File.join(dst_dir, File.basename(filename))

    FileUtils.mkdir_p(dst_dir, :verbose => true)
    FileUtils.cp(filename, dst, :verbose => true, :preserve => true)
  end
end

options = parse_options
copy(load_pics(options), options)