rubyzip/lib/zip/deflater.rb

31 lines
758 B
Ruby
Executable File

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.size
@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.