I needed to convert a nasty text document with formatted emails to CSV, so I made this.

csv.rb

require 'csv'

class User
  attr_accessor :email, :first_name, :last_name
  
  def initialize(email = nil, first_name = nil, last_name = nil)
    @email = email
    @first_name = first_name
    @last_name = last_name
  end
  
  def initialize_with_formatted_email email
    email.strip!
    parts = email.split
    if parts.count == 3
      @email = parts[2].gsub(/[<>]/, "")
      @first_name = parts[0]
      @last_name = parts[1]
    else
      @email = parts[0]
    end
  end
end

emails = File::open("/Users/Trimble/Desktop/emails.txt", "r").readlines

CSV.open("/Users/Trimble/Desktop/emails.csv", "wb") do |csv|
  emails.each do |email|
    email.strip!
    email.chomp! ","
    user = User.new
    user.initialize_with_formatted_email email
    csv << [user.email, user.first_name, user.last_name]
  end
end