text: # -*- coding: utf8 -*-
  
  __author__ = 'sergey'
  
  """
  Class for ZLIB compression helper
  """
  
  from dedupsqlfs.compression import BaseCompression
  
  class ZlibCompression(BaseCompression):
  
      _method_name = "zlib"
  
      _minimal_size = 12
  
      _has_comp_level_options = True
  
      def getFastCompressionOptions(self):
          return ( 1, )
  
      def getNormCompressionOptions(self):
          return ( 6, )
  
      def getBestCompressionOptions(self):
          return ( 9, )
  
      def getDefaultCompressionOptions(self):
          return ( 2, )
  
      def getCustomCompressionOptions(self):
          try:
              level = int(self._custom_comp_level)
              if level < 0:
                  level = 0
              elif level > 9:
                  level = 9
              opts = (level, )
          except:
              opts = False
              pass
          return opts
  
      pass
  