pdf_page_count.rb

require 'rubygems'
require 'pdf/reader'
require 'rjb'

# Load Java classes
Rjb::load
PdfReader = Rjb::import('com.lowagie.text.pdf.PdfReader')

# Ruby PDF Reader Version
# Works...however(comma) RIDICULOUSLY slow
# Runtime: (153 page, 43.1MB PDF) Gave up @ 2m27.918s!
class PageReceiver
  attr_accessor :pages
  def page_count(arg)
    @pages = arg
  end
end

def ruby_page_count(file)
  receiver = PageReceiver.new
  pdf = PDF::Reader.file(file, receiver)
  receiver.pages
end

# iText PDF Reader version, via RJB
# Lets see if this is any faster
# Runtime: (153 page, 43.1MB PDF) 0m1.541s! Who's Yur Daddy?!
def itext_page_count(file)
  pdf = PdfReader.new(file)
  pdf.getNumberOfPages
end

# Main
def main
  pdfs = Dir["*.pdf"]
  # pages = ruby_page_count pdfs[1]
  pages = itext_page_count pdfs[1]
  puts "#{pages} pages"
end

if $0 == __FILE__
  begin
    main
  rescue Exception
    puts "Exception Caught: #{$!}"
  end
end