def listunspent(self, addr):
key = self.address_to_key(addr)
if key is None:
raise BaseException('Invalid Bitcoin address', addr)
out = []
with self.db_utxo.lock:
for k, v in self.db_utxo.db.iterator(start=key):
if not k.startswith(key):
break
if len(k) == KEYLENGTH:
txid = k[20:52].encode('hex')
txpos = bytes4_to_int(k[52:56])
h = bytes4_to_int(v[8:12])
v = bytes8_to_int(v[0:8])
out.append({
'tx_hash': txid,
'tx_pos': txpos,
'height': h,
'value': v
})
if len(out) == 1000:
print_log('max utxo reached', addr)
break
out.sort(key=lambda x: x['height'])
return out
def get_history(self, addr):
out = []
o = self.listunspent(addr)
for item in o:
out.append((item['height'], item['tx_hash']))
h = self.db_hist.get(addr)
while h:
item = h[0:80]
h = h[80:]
txi = item[0:32].encode('hex')
hi = bytes4_to_int(item[36:40])
txo = item[40:72].encode('hex')
ho = bytes4_to_int(item[76:80])
out.append((hi, txi))
out.append((ho, txo))
# uniqueness
out = set(out)
# sort by height then tx_hash
out = sorted(out)
return map(lambda x: {'height': x[0], 'tx_hash': x[1]}, out)
def get_history(self, addr):
out = []
o = self.listunspent(addr)
for item in o:
out.append((item['height'], item['tx_hash']))
h = self.db_hist.get(addr)
while h:
item = h[0:80]
h = h[80:]
txi = item[0:32].encode('hex')
hi = bytes4_to_int(item[36:40])
txo = item[40:72].encode('hex')
ho = bytes4_to_int(item[76:80])
out.append((hi, txi))
out.append((ho, txo))
# uniqueness
out = set(out)
# sort by height then tx_hash
out = sorted(out)
return map(lambda x: {'height':x[0], 'tx_hash':x[1]}, out)
def listunspent(self, addr):
key = self.address_to_key(addr)
if key is None:
raise BaseException('Invalid Reddcoin address', addr)
out = []
with self.db_utxo.lock:
for k, v in self.db_utxo.db.iterator(start=key):
if not k.startswith(key):
break
if len(k) == KEYLENGTH:
txid = k[20:52].encode('hex')
txpos = bytes4_to_int(k[52:56])
h = bytes4_to_int(v[8:12])
v = bytes8_to_int(v[0:8])
out.append({'tx_hash': txid, 'tx_pos':txpos, 'height': h, 'value':v})
if len(out) == 1000:
print_log('max utxo reached', addr)
break
out.sort(key=lambda x:x['height'])
return out
def listunspent(self, addr):
key = self.address_to_key(addr)
if key is None:
raise BaseException("Invalid Bitcoin address", addr)
out = []
with self.db_utxo.lock:
for k, v in self.db_utxo.db.iterator(start=key):
if not k.startswith(key):
break
if len(k) == KEYLENGTH:
txid = k[20:52].encode("hex")
txpos = bytes4_to_int(k[52:56])
h = bytes4_to_int(v[8:12])
v = bytes8_to_int(v[0:8])
out.append({"tx_hash": txid, "tx_pos": txpos, "height": h, "value": v})
if len(out) == 1000:
print_log("max utxo reached", addr)
break
out.sort(key=lambda x: x["height"])
return out
def set_spent(self, addr, txi, txid, index, height, undo):
key = self.address_to_key(addr)
leaf = key + txi
s = self.delete_key(leaf)
value = bytes8_to_int(s[0:8])
in_height = bytes4_to_int(s[8:12])
undo[leaf] = value, in_height
# delete backlink txi-> addr
self.db_addr.delete(txi)
# add to history
s = self.db_hist.get(addr)
if s is None: s = ''
txo = (txid + int_to_hex4(index) + int_to_hex4(height)).decode('hex')
s += txi + int_to_bytes4(in_height) + txo
s = s[-80 * self.pruning_limit:]
self.db_hist.put(addr, s)
def set_spent(self, addr, txi, txid, index, height, undo):
key = self.address_to_key(addr)
leaf = key + txi
s = self.delete_key(leaf)
value = bytes8_to_int(s[0:8])
in_height = bytes4_to_int(s[8:12])
undo[leaf] = value, in_height
# delete backlink txi-> addr
self.db_addr.delete(txi)
# add to history
s = self.db_hist.get(addr)
if s is None: s = ''
txo = (txid + int_to_hex4(index) + int_to_hex4(height)).decode('hex')
s += txi + int_to_bytes4(in_height) + txo
s = s[ -80*self.pruning_limit:]
self.db_hist.put(addr, s)
