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1 #---
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2 # Excerpted from "Seven Languages in Seven Weeks",
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3 # published by The Pragmatic Bookshelf.
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4 # Copyrights apply to this code. It may not be used to create training material,
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5 # courses, books, articles, and the like. Contact us if you are in doubt.
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6 # We make no guarantees that this code is fit for any purpose.
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7 # Visit http://www.pragmaticprogrammer.com/titles/btlang for more book information.
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8 #---
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9 module ActsAsCsv
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10 def self.included(base)
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11 base.extend ClassMethods
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12 end
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13
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14 module ClassMethods
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15 def acts_as_csv
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16 include InstanceMethods
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17 end
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18 end
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19
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20 module InstanceMethods
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21 def read
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22 @csv_contents = []
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23 filename = self.class.to_s.downcase + '.txt'
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24 file = File.new(filename)
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25 @headers = file.gets.chomp.split(', ')
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26
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27 file.each do |row|
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28 @csv_contents << row.chomp.split(', ')
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29 end
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30 end
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31
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32 attr_accessor :headers, :csv_contents
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33 def initialize
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34 read
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35 end
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36 end
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37 end
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38
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39 class RubyCsv # no inheritance! You can mix it in
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40 include ActsAsCsv
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41 acts_as_csv
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42 end
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43
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44 m = RubyCsv.new
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45 puts m.headers.inspect
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46 puts m.csv_contents.inspect
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47
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