require "digest/md5"
require "stringio"
module Filezor::Util
  BUFFER_SIZE = 2**16
  
  # Streaming MD5 on IO objects
  def md5(io)
    md5 = Digest::MD5.new
    while chunk = io.read(BUFFER_SIZE)
      md5 << chunk
    end
    io.rewind
    md5.hexdigest
  end
  
  def files_from_map(map)
    map.inject([]) do |memo, (path, value)|
      memo << Filezor::File.new(StringIO.new(value), path)
    end
  end
  
  extend self
end