def get_file(self, fileName):
fileValue = self.buffer.search_retNode(fileName)
if(fileValue != None):
if(type(fileValue) == str):
fileValue = Meta.getMetaObject(fileValue)
if fileValue != None:
for value in self.buffer.interate():
if type(value) == str:
if(Meta.genarte_hash(value) == fileValue.hash):
return Encoding.decode64BitEncoding(value)
def replaceHash(self, old_value, new_value):
current_node = self.head
new_node = Node(new_value,current_node.prev, current_node.next)
while current_node is not Node:
if type(current_node.data) == str:
if Meta.genarte_hash(current_node.data) == old_value:
current_node.prev.next = new_node
current_node.next.prev = new_node
return True
current_node = current_node.next
return False
def removeHash(self,node_value):
current_node = self.head
while current_node is not None:
if type(current_node.data) == str:
if Meta.genarte_hash(current_node.data) == node_value:
if current_node.prev is not None:
current_node.prev.next = current_node.next
current_node.next.prev = current_node.prev
else:
# otherwise we have no prev (it's None), head is the next one, and prev becomes None
self.head = current_node.next
current_node.next.prev = None
return True
current_node = current_node.next
return False