Morevna Changeset - e6752944fe6b

Changeset - e6752944fe6b

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Laman - 8 years ago 2017-05-07 17:29:12

hashtree loading and saving

1 file changed with 18 insertions and 3 deletions:

src/hashtree.py

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src/hashtree.py

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 import hashlib
 import os
 import collections
 class HashTree:
@@ @@ -9,7 +8,7 @@ class HashTree: @@
 	## Prepares a tree containing leafCount leaves.
 	def __init__(self,leafCount):
-		self.store=[None]*(leafCount*2-1)
+		self.store=[b""]*(leafCount*2-1)
 		self.leafStart=leafCount-1
 		self.index=self.leafStart
 		self.leafCount=leafCount
@@ @@ -27,7 +26,23 @@ class HashTree: @@
 		res.buildTree()
 		return res
 	@classmethod
 	def load(cls,filename):
 		with open(filename,"rb") as f:
 			stat=os.fstat(f.fileno())
 			size=stat.st_size
 			nodeCount=size//HashTree.HASH_LEN
 			res=cls((nodeCount+1)//2)
 			for i in range(nodeCount):
 				res.store[i]=f.read(HashTree.HASH_LEN)
 	def save(self,filename):
 		with open(filename,"wb") as f:
 			for h in self.store:
 				f.write(h)
 	## Inserts a leaf at the first empty position.
+	#

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