Ruby parse csv file

parse_csv.rb

# Command line parse csv file
require 'CSV'

gf = "ucp_top_500_pages.txt"
af = "ucp_top_500_091209_categorized.txt"

src = File.open(gf,"r").read
views = {}
views = build_views(src)

src2 = File.open(af,"r").read
views2 = {}
views2 = build_views(src2)

views3 = {}
views.keys.each { |k|
 puts k
 next if k.nil? or views[k].nil? or views2[k].nil? 
 url = views[k] + views2[k]
 views3[k] = url
}

# "/ucp_channeldoc.cfm/1/15/11383/11383-11383/2848"=>["/ucp_channeldoc.cfm/1/15/11383/11383-11383/2848", "20", "17", "156.25", "0.875", "0.8", "0", "/ucp_channeldoc.cfm/1/15/11383/11383-11383/2848", "Sports / Leisure", "UCP: Sports / Leisure"],
# >> views3["/ucp_generaldoc.cfm/1/3/6633/6633-6633/6256"][8]
# => "About Organization"


def build_views(src)
 idx = 0
 fs = "\t"
 views = {}
 begin
  parsed = []
  parsed_cells, idx = CSV.parse_row(src, idx, parsed, fs)
  puts "Parsed #{ parsed_cells } cells."
  puts parsed[0]
  p parsed
  views[parsed[0]] = parsed
 end while parsed_cells > 0
 return views
end

# Other parts of code

views4 = {}
views.keys.each { |k|
 next if views3[k].nil? 
 category = views3[k][8]
 pv = views3[k][1]
 puts "#{pv} #{category}"
 if views4.has_key?(category) then
  views4[category] = views4[category].to_i + views3[k][1].to_i
 else
  views4[category] = views3[k][1].to_i
 end
}


views4.keys.each {|k|
 puts "#{views4[k]}, #{k}"
}