Get files in dir of zips

files_in_dir_of_zips.rb

require 'zip/zipfilesystem'
require 'net/ftp'
require 'csv'

def files_in_zip(filename)
  Zip::ZipFile.open(filename) do |zip|
    res = []
    dirs = [""]
    while dirs.size > 0
      d = dirs.pop
      begin
        curr = zip.dir.entries(d).map { |x| [d,x].select { |x| x != '' }.join("/") }
        res += curr
        dirs += curr.reject { |x| x =~ /\./ }
        res -= [d]
      rescue => exp
        puts exp.message
      end
    end
    res
  end
rescue => exp
  puts exp.message
  return ["ERRORED"]
end

CSV.open("output.csv","w") do |csv|
  csv << ["Zip","File"]
  files = Dir["**/*.zip"]
  puts "Found #{files.size} zip files"
  files.each do |f|
    puts "Doing file #{f}"
    res = files_in_zip(f)
    res.each do |file|
      csv << [f,file]
    end
  end
end