def testBinaryUnpacker(self):
ts = '\xff\xff\xff'
bu = BinaryUnpacker(ts)
self.assertEqual(bu.getSize(), len(ts))
bu.advance(1)
self.assertEqual(bu.getRemainingSize(), len(ts) - 1)
self.assertEqual(bu.getBinaryString(), ts)
self.assertEqual(bu.getRemainingString(), ts[1:])
bu.rewind(1)
self.assertEqual(bu.getRemainingSize(), len(ts))
bu.resetPosition(2)
self.assertEqual(bu.getRemainingSize(), len(ts) - 2)
self.assertEqual(bu.getPosition(), 2)
bu.resetPosition()
self.assertEqual(bu.getRemainingSize(), len(ts))
self.assertEqual(bu.getPosition(), 0)
bu.append(ts)
self.assertEqual(bu.getBinaryString(), ts + ts)
def testBinaryUnpacker(self):
ts = '\xff\xff\xff'
bu = BinaryUnpacker(ts)
self.assertEqual(bu.getSize(), len(ts))
bu.advance(1)
self.assertEqual(bu.getRemainingSize(), len(ts)-1)
self.assertEqual(bu.getBinaryString(), ts)
self.assertEqual(bu.getRemainingString(), ts[1:])
bu.rewind(1)
self.assertEqual(bu.getRemainingSize(), len(ts))
bu.resetPosition(2)
self.assertEqual(bu.getRemainingSize(), len(ts) - 2)
self.assertEqual(bu.getPosition(), 2)
bu.resetPosition()
self.assertEqual(bu.getRemainingSize(), len(ts))
self.assertEqual(bu.getPosition(), 0)
bu.append(ts)
self.assertEqual(bu.getBinaryString(), ts + ts)
def getTxOffsetList(txListBinary, txCount):
binunpack = BinaryUnpacker(txListBinary)
txOffsetList = []
for i in range(txCount):
txOffsetList.append(binunpack.getPosition())
binunpack.advance(VERSION_LENGTH)
txInCount = binunpack.get(VAR_INT)
for j in range(txInCount):
binunpack.advance(TX_OUT_HASH_LENGTH + TX_OUT_INDEX_LENGTH)
sigScriptLength = binunpack.get(VAR_INT)
binunpack.advance(sigScriptLength + SEQUENCE_LENGTH)
txOutCount = binunpack.get(VAR_INT)
for k in range(txOutCount):
binunpack.advance(SATOSHI_LENGTH)
scriptLength = binunpack.get(VAR_INT)
binunpack.advance(scriptLength)
binunpack.advance(LOCKTIME_LENGTH)
return txOffsetList
