ruby download with progress

download.rb

# WIP  

  def download(src, dest)
    uri = URI.parse(src)
    yield "Download #{src} to #{dest}"

    mutex = Mutex.new
    size = 0
    downloaded = 0

    Thread.new do
      File.open(dest, 'w') do |dest_file|
        http = Net::HTTP.new(uri.host, uri.port)
        http.use_ssl = (uri.scheme == 'https')
        http.start do
          http.request_get(uri.request_uri) do |resp|
            size = resp['Content-Length'].to_i.freeze
            resp.read_body do |chunk|
              dest_file.write chunk
              downloaded += chunk.size
            end
          end
        end
      end
    end

    loop do
      if size.positive?
        pct = ((downloaded / size) * 100.0).round
        yield "#{pct}%\t#{downloaded} of #{size}"
        break if downloaded >= size
      end

      sleep 0.2
    end
  end