converts twitter username and password to oauth access token and secret

twitter_oauth_conversion.rb

require 'rubygems'
require 'twitter'
require 'mechanize'

consumer_token = 'token'
consumer_secret = 'secret'

twitter_name = ARGV[0]
twitter_password = ARGV[1]

oauth = Twitter::OAuth.new(consumer_token,consumer_secret);
a = WWW::Mechanize.new { |agent|
   agent.user_agent_alias = 'Mac Safari'
}

page = a.get( oauth.request_token.authorize_url) 
form = page.forms.first
form['session[username_or_email]'] = twitter_name
form['session[password]'] = twitter_password
result = a.submit(form)


if (result.body.include?('Success!') #result will be your own redirect page (Web Apps)
      or 
    result.body.include?("You've successfully granted access to")) #twitter success page (APIs)
  
	oauth.authorize_from_request(oauth.request_token.token, oauth.request_token.secret)
	puts "#{twitter_name} has twitter_token=#{oauth.access_token.token}, twitter_secret=#{oauth.access_token.secret}"
else
  puts result.body
  puts "Failed to authorize #{twitter_name}"
end