PDF Split using PDFBox

split.rb

require 'java'
require './pdfbox-1.8.13.jar'
require './fontbox-1.8.13.jar'
require './commons-logging-1.2.jar'

input = java.io.File.new("example.pdf")
inputDocument = org.apache.pdfbox.pdmodel.PDDocument::loadNonSeq(input, nil)
stripper = org.apache.pdfbox.util.PDFTextStripper.new
outputDocument = org.apache.pdfbox.pdmodel.PDDocument.new

for page in (1..inputDocument.getNumberOfPages)
  stripper.setStartPage(page)
  stripper.setEndPage(page)
  text = stripper.getText(inputDocument)
  p = java.util.regex.Pattern::compile("Growing Faster Than PCs")
  m = p.matcher(text)
  if m.find
    pdPage = inputDocument.getDocumentCatalog.getAllPages.get(page - 1)
    outputDocument.importPage(pdPage)
  end
end

f = java.io.File.new("extract.pdf")
outputDocument.save(f)
outputDocument.close()
inputDocument.close()