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#!/usr/bin/env ruby
require 'optimist'
STDIN.set_encoding 'utf-8'
STDOUT.set_encoding 'utf-8'
conf = Optimist::options do
banner "splitpipes -f <n> < <input>"
opt :field, "field", :type => :int, :required => true
opt :to, "to", :type => :int, :default => nil
end
a = []
range = false
if conf[:to]
range = true
end
if range
if conf[:field] >= conf[:to]
STDERR.write "field >= to, exiting\n"
exit
end
end
if conf[:field]<=0 || (range && conf[:to]<=0)
STDERR.write "field or to <= 0, exiting"
exit
end
while line = STDIN.gets
j = 1
line.strip.split(' ||| ').each { |i|
if range && (conf[:field]..conf[:to]).include?(j)
a << i.strip
elsif j == conf[:field]
puts i.strip
break
end
j += 1
}
if range
puts "#{a.join " ||| "}\n"
end
a.clear
end
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