Unzip from StringIO, Using Rubyzip

Requires Rubyzip 1.1.0+

Given a data of Zip file that is read from an IO, extract that data into a Hash.

def unzip(data)
  fin = StringIO.new(data)

  entries = {}

  ::Zip::InputStream.open(fin) do |fzip|
    while entry = fzip.get_next_entry
      entries[entry.name] = fzip.read
    end
  end

  entries
end

Example:

entries = unzip(open("http://example.com/archive.zip").read)
entries["file.txt"] #=> "Hello World\n" (File Content)