class PDF::Inspector

def self.analyze(output, *args, &block)
  if output.is_a?(String)
    output = StringIO.new(output)
  end
  obs = new(*args, &block)
  PDF::Reader.open(output) do |reader|
    reader.pages.each do |page|
      page.walk(obs)
    end
  end
  obs
end

def self.analyze_file(filename, *args, &block)
  File.open(filename, 'rb') do |io|
    analyze(io, *args, &block)
  end
end

def self.parse(obj)
  PDF::Reader::Parser.new(
    PDF::Reader::Buffer.new(StringIO.new(obj)),
    nil
  ).parse_token
end