fotolife.rb

#!/usr/bin/env ruby
# usage:
#   bundle exec ./fotolife.rb FILE_PATH
# required:
#   oauth.gem

require 'base64'
require 'oauth'

@consumer = OAuth::Consumer.new(
  'CONSUMER_KEY',
  'CONSUMER_SECRET',
  site: 'http://f.hatena.ne.jp'
)

@access_token = OAuth::AccessToken.new(
  @consumer,
  'ACCESS_TOKEN',
  'ACCESS_TOKEN_SECRET'
)

def upload_to_fotolife(file_path)
  title = File.basename(file_path, '.*')
  header = {'Accept'=>'application/xml', 'Content-Type' => 'application/xml'}
  content = Base64.encode64(open(file_path).read)
  body =<<-"EOF"
<entry xmlns=http://purl.org/atom/ns>
  <title>#{title}</title>
  <content mode='base64'  type='image/jpeg'>#{content}</content>
</entry>
  EOF
  response = @access_token.request(:post, '/atom/post', body, header)
  response.body =~ /<hatena:imageurl>(.*?)<\/hatena:imageurl>/
  $1
end

photo_id = upload_to_fotolife(ARGV[0])

puts "uploaded: #{photo_id}"