import logging

# Handle efficient operations on a non-fixed length buffer like appending,
# replacing, reading chunks, etc
class ChunkBuffer:
    def __init__( self, data = '' ):
        logging.debug( "Creating chunkbuffer: %s" % data )
        self.chunk = list( data )

    def append( self, s ):
        self.chunk.extend( list( s ) )

    def replace( self, s, start, end ):
        self.chunk

    def length( self ):
        return len( self.chunk )

    def string(self):
        logging.debug( "Stringifying: %s" % self.chunk )
        return ''.join( self.chunk )