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Segwit support: parse transactions #87

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Segwit support: parse transactions #87

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46 changes: 46 additions & 0 deletions parser.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -358,12 +358,26 @@ static void parseInputs(
const Block *block,
const uint8_t *&p,
const uint8_t *txHash
#if defined(BITCOIN)
, uint64_t* witnessNum
#endif
) {
if(!skip) {
startInputs(p);
}

LOAD_VARINT(nbInputs, p);

#if defined(BITCOIN) // segwit support
*witnessNum = 0;
if(nbInputs == 0)
{
SKIP(unsigned char, flag, p); // flag is always 1 in current implementation
LOAD_VARINT(nbRealInputs, p);
nbInputs = nbRealInputs;
*witnessNum = nbRealInputs;
}
#endif
for(uint64_t inputIndex=0; inputIndex<nbInputs; ++inputIndex) {
parseInput<skip>(
block,
Expand All @@ -378,6 +392,28 @@ static void parseInputs(
}
}

#if defined(BITCOIN)
static void parseWitness(
const uint8_t* &p
) {
LOAD_VARINT(num, p);
for(uint64_t i=0; i<num; ++i)
{
LOAD_VARINT(num2, p);
p += num2; // just skip witness data for now
}
}


static void parseWitnesses(
const uint64_t witnessNum,
const uint8_t* &p
) {
for(uint64_t i=0; i<witnessNum; ++i)
parseWitness(p);
}
#endif

template<
bool skip
>
Expand Down Expand Up @@ -409,7 +445,12 @@ static void parseTX(
SKIP(uint32_t, nTime, p);
#endif

#if defined(BITCOIN)
uint64_t witnessNum = 0;
parseInputs<skip>(block, p, txHash, &witnessNum);
#else
parseInputs<skip>(block, p, txHash);
#endif

Chunk *txo = 0;
size_t txoOffset = -1;
Expand All @@ -422,6 +463,11 @@ static void parseTX(

parseOutputs<skip, false>(p, txHash);

#if defined(BITCOIN)
if(witnessNum)
parseWitnesses(witnessNum, p);
#endif

if(txo) {
size_t txoSize = p - outputsStart;
txo->init(
Expand Down