content: #
  # Filter lookup expressions
  #
  
  FILTER_CHAR_BASED_LOOKUP_MAP = dict(
      n='exact',
      ic='icontains',
      nic='icontains',
      iew='iendswith',
      niew='iendswith',
      isw='istartswith',
      nisw='istartswith',
      ie='iexact',
      nie='iexact',
      empty='empty',
      regex='regex',
      iregex='iregex',
  )
  
  FILTER_NUMERIC_BASED_LOOKUP_MAP = dict(
      n='exact',
      lte='lte',
      lt='lt',
      gte='gte',
      gt='gt',
      empty='isnull',
  )
  
  FILTER_NEGATION_LOOKUP_MAP = dict(
      n='exact'
  )
  
  FILTER_TREENODE_NEGATION_LOOKUP_MAP = dict(
      n='in'
  )
  
  #
  # HTTP Request META safe copy
  #
  
  HTTP_REQUEST_META_SAFE_COPY = [
      'CONTENT_LENGTH',
      'CONTENT_TYPE',
      'HTTP_ACCEPT',
      'HTTP_ACCEPT_ENCODING',
      'HTTP_ACCEPT_LANGUAGE',
      'HTTP_HOST',
      'HTTP_REFERER',
      'HTTP_USER_AGENT',
      'HTTP_X_FORWARDED_FOR',
      'HTTP_X_FORWARDED_HOST',
      'HTTP_X_FORWARDED_PORT',
      'HTTP_X_FORWARDED_PROTO',
      'HTTP_X_REAL_IP',
      'QUERY_STRING',
      'REMOTE_ADDR',
      'REMOTE_HOST',
      'REMOTE_USER',
      'REQUEST_METHOD',
      'SERVER_NAME',
      'SERVER_PORT',
  ]
  
  
  #
  # CSV-style format delimiters
  #
  
  CSV_DELIMITERS = {
      'comma': ',',
      'semicolon': ';',
      'pipe': '|',
      'tab': '\t',
  }
  
  
  #
  # HTML allowed tags & attributes
  #
  
  HTML_ALLOWED_TAGS = {
      "a", "b", "blockquote", "br", "code", "dd", "del", "div", "dl", "dt", "em", "h1", "h2", "h3", "h4", "h5", "h6",
      "hr", "i", "img", "li", "ol", "p", "pre", "strong", "table", "tbody", "td", "th", "thead", "tr", "ul"
  }
  
  HTML_ALLOWED_ATTRIBUTES = {
      "a": {"href", "title"},
      "div": {"class"},
      "h1": {"id"},
      "h2": {"id"},
      "h3": {"id"},
      "h4": {"id"},
      "h5": {"id"},
      "h6": {"id"},
      "img": {"alt", "src", "title"},
      "td": {"align"},
      "th": {"align"},
  }
  
  HTTP_PROXY_SUPPORTED_SOCK_SCHEMAS = ['socks4', 'socks4a', 'socks4h', 'socks5', 'socks5a', 'socks5h']
  HTTP_PROXY_SOCK_RDNS_SCHEMAS = ['socks4h', 'socks4a', 'socks5h', 'socks5a']
  HTTP_PROXY_SUPPORTED_SCHEMAS = ['http', 'https', 'socks4', 'socks4a', 'socks4h', 'socks5', 'socks5a', 'socks5h']
  