deflater.rb

module Zip
  class Deflater < Compressor #:nodoc:all
    def initialize(outputStream, level = Zlib::DEFAULT_COMPRESSION)
      super()
      @outputStream = outputStream
      @zlibDeflater = Zlib::Deflate.new(level, -Zlib::MAX_WBITS)
      @size = 0
      @crc = Zlib::crc32
    end
    
    def << (data)
      val = data.to_s
      @crc = Zlib::crc32(val, @crc)
      @size += val.bytesize
      @outputStream << @zlibDeflater.deflate(data)
    end

    def finish
      until @zlibDeflater.finished?
        @outputStream << @zlibDeflater.finish
      end
    end

    attr_reader :size, :crc
  end
end

# Copyright (C) 2002, 2003 Thomas Sondergaard
# rubyzip is free software; you can redistribute it and/or
# modify it under the terms of the ruby license.