class MiniPortile

def download_file_http(url, full_path, count = 3)
  filename = File.basename(full_path)
  with_tempfile(filename, full_path) do |temp_file|
    total = 0
    params = {
      "Accept-Encoding" => 'identity',
      :content_length_proc => lambda{|length| total = length },
      :progress_proc => lambda{|bytes|
        if total
          new_progress = (bytes * 100) / total
          message "\rDownloading %s (%3d%%) " % [filename, new_progress]
        else
          # Content-Length is unavailable because Transfer-Encoding is chunked
          message "\rDownloading %s " % [filename]
        end
      },
      :open_timeout => @open_timeout,
      :read_timeout => @read_timeout,
    }
    proxy_uri = URI.parse(url).scheme.downcase == 'https' ?
                ENV["https_proxy"] :
                ENV["http_proxy"]
    if proxy_uri
      _, userinfo, _p_host, _p_port = URI.split(proxy_uri)
      if userinfo
        proxy_user, proxy_pass = userinfo.split(/:/).map{|s| CGI.unescape(s) }
        params[:proxy_http_basic_authentication] =
          [proxy_uri, proxy_user, proxy_pass]
      end
    end
    begin
      OpenURI.open_uri(url, 'rb', params) do |io|
        temp_file << io.read
      end
      output
    rescue OpenURI::HTTPRedirect => redirect
      raise "Too many redirections for the original URL, halting." if count <= 0
      count = count - 1
      return download_file(redirect.url, full_path, count-1)
    rescue => e
      count = count - 1
      @logger.puts "#{count} retrie(s) left for #{filename} (#{e.message})"
      if count > 0
        sleep 1
        return download_file_http(url, full_path, count)
      end
      output e.message
      return false
    end
  end
end