Zlib::GzipReader can take "an IO, or IO-like, object." as it's input, as stated in docs.
Zlib::GzipReader.open('hoge.gz') {|gz|
print gz.read
}
File.open('hoge.gz') do |f|
gz = Zlib::GzipReader.new(f)
print gz.read
gz.close
end
How should I ungzip a string?