rubyzip/samples/example_recursive.rb

require 'zip'

# This is a simple example which uses rubyzip to
# recursively generate a zip file from the contents of
# a specified directory. The directory itself is not
# included in the archive, rather just its contents.
#
# Usage:
#   directoryToZip = "/tmp/input"
#   outputFile = "/tmp/out.zip"
#   zf = ZipFileGenerator.new(directoryToZip, outputFile)
#   zf.write()
class ZipFileGenerator
  # Initialize with the directory to zip and the location of the output archive.
  def initialize(inputDir, outputFile)
    @inputDir = inputDir
    @outputFile = outputFile
  end

  # Zip the input directory.
  def write
    entries = Dir.entries(@inputDir)
    entries.delete('.')
    entries.delete('..')
    io = Zip::File.open(@outputFile, Zip::File::CREATE)

    writeEntries(entries, '', io)
    io.close()
  end

  # A helper method to make the recursion work.

  private

  def writeEntries(entries, path, io)
    entries.each do |e|
      zipFilePath = path == '' ? e : File.join(path, e)
      diskFilePath = File.join(@inputDir, zipFilePath)
      puts 'Deflating ' + diskFilePath
      if  File.directory?(diskFilePath)
        io.mkdir(zipFilePath)
        subdir = Dir.entries(diskFilePath)
        subdir.delete('.')
        subdir.delete('..')
        writeEntries(subdir, zipFilePath, io)
      else
        io.get_output_stream(zipFilePath) { |f| f.puts(File.open(diskFilePath, 'rb').read()) }
      end
    end
  end
end