'''

  import functools

  import json

  import os

  import urllib

  from urllib.parse import parse_qs

      INDEX = INDEX.replace('$PREFIX', CONFIG.get('PREFIX', ''))

  def allows_jsonp(function):

      ''' Add support for JSONP queries to the endpoint decorated. '''

  @asyncio.coroutine

  @allows_jsonp

  def get_pkg(request):

      branch = request.match_info.get('branch')

      pretty = _get_pretty(request)

      name = request.match_info.get('name')

  @asyncio.coroutine

  @allows_jsonp

  def get_src_pkg(request):

      branch = request.match_info.get('branch')

      pretty = _get_pretty(request)

      name = request.match_info.get('name')

  @asyncio.coroutine

  @allows_jsonp

  def get_pkg_files(request):

      branch = request.match_info.get('branch')

      name = request.match_info.get('name')

      pretty = _get_pretty(request)

  @asyncio.coroutine

  @allows_jsonp

  def get_pkg_changelog(request):

      branch = request.match_info.get('branch')

      name = request.match_info.get('name')

      pretty = _get_pretty(request)

  def list_branches(request):

      ''' Return the list of all branches currently supported by mdapi

      '''

      pretty = _get_pretty(request)

      output = sorted(list(set([

          # Remove the front part `mdapi-` and the end part -<type>.sqlite

      ''' Return the information about the packages having the specified

      action (provides, requires, obsoletes...)

      '''

      branch = request.match_info.get('branch')

      pretty = _get_pretty(request)

      name = request.match_info.get('name')

  @asyncio.coroutine

  def index(request):

      return web.Response(

          body=INDEX.encode('utf-8'),

          content_type='text/html',

  @asyncio.coroutine

  def init(loop):

      app = web.Application(loop=loop)

      routes = []

      prefix = CONFIG.get('PREFIX', '')

  # url to the database server:

  DB_FOLDER = '/var/tmp'