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Fixed zigzag decode

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This commit is contained in:
Martin Tůma 2025-01-06 10:04:41 +01:00
parent b630d1d205
commit c12c2b4497
1 changed files with 8 additions and 2 deletions
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10
src/data.cpp
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@ -13,6 +13,12 @@ struct CTX
quint64 tag; quint64 tag;
}; };
static inline qint64 zigzag64decode(quint64 value)
{
return static_cast<qint64>((value >> 1u) ^ static_cast<quint64>(
-static_cast<qint64>(value & 1u)));
}
template<typename T> template<typename T>
static bool varint(CTX &ctx, T &val) static bool varint(CTX &ctx, T &val)
{ {
@ -155,7 +161,7 @@ static bool value(CTX &ctx, QVariant &val)
case 4: case 4:
if (!varint(ctx, num)) if (!varint(ctx, num))
return false; return false;
val = QVariant((qint64)num); val = QVariant(static_cast<qint64>(num));
break; break;
case 5: case 5:
if (!varint(ctx, num)) if (!varint(ctx, num))
@ -165,7 +171,7 @@ static bool value(CTX &ctx, QVariant &val)
case 6: case 6:
if (!varint(ctx, num)) if (!varint(ctx, num))
return false; return false;
val = QVariant((qint64)((num >> 1) ^ -(num & 1))); val = QVariant(zigzag64decode(num));
break; break;
case 7: case 7:
if (!varint(ctx, num)) if (!varint(ctx, num))