From: Martin Hansen <mail@...>
Date: 2010-08-18T20:18:14+09:00
Subject: Re: Making File.open work on gzipped files

Thanks Brian and Robert. The below snippet appears to be working nicely 
- though I am not sure that the file is closed if zipped?



class Parser
  def self.open(*args)
    ios = File.open(*args)

    begin
      ios = Zlib::GzipReader.new(ios)
    rescue
      ios.rewind
    end

    parse = self.new(ios)

    if block_given?
      begin
        yield parse
      ensure
        ios.close
      end

      return true
    else
      return parse
    end
  end
end
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