From: Jos Backus <jos@...>
Date: 2011-02-04T06:57:56+09:00
Subject: Re: Zlib::GzipReader and multiple compressed blobs in a single stream

On Thu, Feb 03, 2011 at 02:03:49PM +0900, Jeremy Bopp wrote:
> Once your fix is in place and GZipReader#unused works correctly, is
> there any convenient way to take the returned string and continue
> processing it along with the remaining file contents with an instance of
> GzipReader?

Fwiw, with the changes just committed to trunk the following code works for me
on a file with multiple gzipped blobs:

    require 'stringio'
    require 'zlib'

    def inflate(filename)
      File.open(filename) do |file|
	zio = StringIO.new(file.read)
	loop do
	  io = Zlib::GzipReader.new zio
	  puts io.read
	  unused = io.unused
	  io.finish
	  break if unused.nil?
	  zio.pos -= unused.length
	end
      end
    end

    inflate "gz"

Thanks,
Jos

-- 
Jos Backus
jos at catnook.com