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inflation calculator

/ Published in: Ruby
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Just a quick command-line utility to check inflation values from US statistics office.

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  1. require 'rubygems'
  2. require 'net/http'
  3. require 'hpricot'
  4.  
  5. if (ARGV.size != 2) 
  6.     puts "usage: inflate.rb original-cost from-year"
  7.     exit(1)
  8. end
  9.  
  10. @original_cost = ARGV[0]
  11. @from_year     = ARGV[1]
  12. @this_year     = Date.today.year
  13.  
  14. res = Net::HTTP.post_form(URI.parse("http://data.bls.gov/cgi-bin/cpicalc.pl"),
  15.             { 'cost1' => @original_cost,
  16.               'year1' => @from_year,
  17.               'year2' => @this_year,
  18.               'submit' => 'Calculate' }
  19.             )
  20. doc = Hpricot(res.body)
  21.  
  22. puts doc.search("//span[@id='answer']").inner_html

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