def deserialize(self, s):
h = []
while s:
txid = s[0:32].encode('hex')
txpos = int( rev_hex( s[32:36].encode('hex') ), 16 )
height = int( rev_hex( s[36:40].encode('hex') ), 16 )
h.append( ( txid, txpos, height ) )
s = s[40:]
return h
def remove_from_history(self, addr, tx_hash, tx_pos):
txi = (tx_hash + int_to_hex(tx_pos, 4)).decode('hex')
if addr is None:
try:
addr = self.batch_txio[txi]
except:
raise BaseException(tx_hash, tx_pos)
serialized_hist = self.batch_list[addr]
l = len(serialized_hist)/40
for i in range(l):
item = serialized_hist[40*i:40*(i+1)]
if item[0:36] == txi:
height = int( rev_hex( item[36:40].encode('hex') ), 16 )
serialized_hist = serialized_hist[0:40*i] + serialized_hist[40*(i+1):]
break
else:
hist = self.deserialize(serialized_hist)
raise BaseException("prevout not found", addr, hist, tx_hash, tx_pos)
self.batch_list[addr] = serialized_hist
return height, addr
def add_to_history(self, addr, tx_hash, tx_pos, tx_height):
# keep it sorted
s = (tx_hash + int_to_hex(tx_pos, 4) + int_to_hex(tx_height, 4)).decode('hex')
serialized_hist = self.batch_list[addr]
l = len(serialized_hist)/40
for i in range(l-1, -1, -1):
item = serialized_hist[40*i:40*(i+1)]
item_height = int( rev_hex( item[36:40].encode('hex') ), 16 )
if item_height < tx_height:
serialized_hist = serialized_hist[0:40*(i+1)] + s + serialized_hist[40*(i+1):]
break
else:
serialized_hist = s + serialized_hist
self.batch_list[addr] = serialized_hist
# backlink
txo = (tx_hash + int_to_hex(tx_pos, 4)).decode('hex')
self.batch_txio[txo] = addr
def hash_header(self, header):
return rev_hex(Hash(header_to_string(header).decode('hex')).encode('hex'))
