Import your Gallery 2 g2data dir into Flickr

gallery2flickr.rb

# This takes your g2data albums directory (run it from inside g2data) and makes sets on flickr containing all the photos
# They are set to private so you can make sure everything is looking good before sharing with the world


require 'flickraw'

FlickRaw.api_key=ENV['flickr-api-key']
FlickRaw.shared_secret=ENV['flickr-api-secret']

# token = flickr.get_request_token
# auth_url = flickr.get_authorize_url(token['oauth_token'], :perms => 'delete')
#
# puts "Open this url in your process to complete the authication process : #{auth_url}"
# puts "Copy here the number given when you complete the process."
# verify = gets.strip
#
# begin
#   flickr.get_access_token(token['oauth_token'], token['oauth_token_secret'], verify)
#   login = flickr.test.login
#   puts "You are now authenticated as #{login.username} with token #{flickr.access_token} and secret #{flickr.access_secret}"
# rescue FlickRaw::FailedResponse => e
#   puts "Authentication failed : #{e.msg}"
# end

flickr.access_token=ENV['flickr-access-token']
flickr.access_secret=ENV['flickr-access-secret']

@photosets = {}
@mappings = {}

def refresh_a_mapping(dir, name)
  Dir.entries(dir).each do |f|
    if f != '.' && f != '..'
      if File.directory?("#{dir}/#{f}")
        @mappings["#{dir}/#{f}".gsub('/','-')] = "#{dir}/#{f}"
        refresh_a_mapping("#{dir}/#{f}", f)
      end
    end
  end
end

def refresh_mappings(dir)
  Dir.entries(dir).each do |f|
    if f != '.' && f != '..'
      refresh_a_mapping(dir + f, f)
    end
  end
end

def refresh_photosets
  @photosets = flickr.photosets.getList
end

def upload_image_to_set(file, set)
  puts "INFO: #{file} to #{set}"
  #if flickr.photos.search(user_id: 'me', tags: "g2migrated", text: file).count > 0
  #  puts "WARN: #{file} already uploaded to set #{set}!"
  #else
    photo_id = flickr.upload_photo file,
      description: file,
      tags: 'g2migrated',
      is_public: 0
    if the_set = @photosets.find { |ps| ps.title == set }
      puts "INFO: Existing set: #{set}"
      flickr.photosets.addPhoto(photoset_id: the_set.id, photo_id: photo_id)
    else
      puts "INFO: New set: #{set}"
      flickr.photosets.create(title: set, primary_photo_id: photo_id)
      refresh_photosets
    end
    sleep 10
  #end
end

def process_album_for_set(set_name)
  refresh_photosets
  album_path = @mappings[set_name]
  if album_path.nil? || !File.exists?(album_path)
    puts "Not here: #{set_name}"
    return
  end

  if set = @photosets.find { |ps| ps.title == set_name }
    @full_photoset = flickr.photosets.getPhotos(photoset_id: set.id)

    Dir.entries(album_path).sort.each do |f|
      if f != '.' && f != '..'
        if !File.directory?("#{album_path}/#{f}")
          if !@full_photoset.photo.map(&:title).find { |p| p == f.gsub(/\.(.*)$/, '') }
            puts "INFO: not found #{f} in #{set_name}"
            upload_image_to_set("#{album_path}/#{f}",set_name)
          end
        end
      end
    end
  else
    puts "WARN: Can't find set #{set_name}"
    return
  end
end

def import_album(album_path, name)
  refresh_photosets
  set_name = "#{album_path}".gsub('/','-')
  if set = @photosets.find { |ps| ps.title == set_name }
    puts "WARN: Set #{set_name} already imported! Finding missing instead."
    process_album_for_set(set_name)
  else
    puts "INFO: processing: #{set_name}"
    Dir.entries(album_path).sort.each do |f|
      if f != '.' && f != '..'
        if File.directory?("#{album_path}/#{f}")
          import_album("#{album_path}/#{f}", f)
        else
          upload_image_to_set("#{album_path}/#{f}",set_name)
        end
      end
    end
  end
end

def import(albums_path)
  refresh_mappings(albums_path)
  Dir.entries(albums_path).sort.each do |f|
    if f != '.' && f != '..'
      import_album(albums_path + f, f)
    end
  end
end

def find_missing(albums_path)
  refresh_mappings(albums_path)
  refresh_photosets
  @photosets.each do |ps|
    process_album_for_set(ps.title)
  end
end

import('albums/')
# find_missing('albums/')

Never got an e-mail notification of your comment! Sorry for 1000x delay.

You could easily adapt this to do Gallery 3, just change it to use var/albums/ instead of g2data/albums/ and it should work.