private ulong ReadRawVarint64()
{
int shift = 0;
ulong result = 0;
while (shift < 64)
{
byte b = ReadByteFromStream();
result |= (ulong)(b & 0x7F) << shift;
if ((b & 0x80) == 0)
{
return(result);
}
shift += 7;
}
throw InvalidProtocolBufferException.MalformedVarint();
}
private uint ReadRawVarint32(bool zeroIfEndOfStream = false)
{
int tmp;
if (zeroIfEndOfStream)
{
tmp = stream.ReadByte();
if (tmp == -1)
{
return(0);
}
}
else
{
tmp = ReadByteFromStream();
}
if (tmp < 128)
{
return((uint)tmp);
}
int result = tmp & 0x7f;
if ((tmp = ReadByteFromStream()) < 128)
{
result |= tmp << 7;
}
else
{
result |= (tmp & 0x7f) << 7;
if ((tmp = ReadByteFromStream()) < 128)
{
result |= tmp << 14;
}
else
{
result |= (tmp & 0x7f) << 14;
if ((tmp = ReadByteFromStream()) < 128)
{
result |= tmp << 21;
}
else
{
result |= (tmp & 0x7f) << 21;
result |= (tmp = ReadByteFromStream()) << 28;
if (tmp >= 128)
{
// Discard upper 32 bits
for (int i = 0; i < 5; i++)
{
if (ReadByteFromStream() < 128)
{
return((uint)result);
}
}
throw InvalidProtocolBufferException.MalformedVarint();
}
}
}
}
return((uint)result);
}
public void SkipField(WireType wireType)
{
switch (wireType)
{
case WireType.Varint:
int tmp;
int cnt = 0;
while ((tmp = ReadByteFromStream()) >= 128)
{
cnt++;
if (cnt == 10)
{
throw InvalidProtocolBufferException.MalformedVarint();
}
}
break;
case WireType.Fixed64:
ReadFromStream(buffForSeek, 0, 8);
break;
case WireType.LengthDelimited:
var len = ReadLength();
if (len <= buffForSeek.Length)
{
ReadFromStream(buffForSeek, 0, len);
}
else
{
ReadFromStream(new byte[len], 0, len);
}
break;
case WireType.StartGroup:
recursionDepth++;
uint tag;
WireType wt;
do
{
tag = ReadTag();
if (tag == 0)
{
throw InvalidProtocolBufferException.TruncatedMessage();
}
wt = WireFormat.GetTagWireType(tag);
SkipField(wt);
} while (wt != WireType.EndGroup);
recursionDepth--;
break;
case WireType.EndGroup:
break;
case WireType.Fixed32:
ReadFromStream(buffForSeek, 0, 4);
break;
default:
throw InvalidProtocolBufferException.UnknownWireType();
break;
}
}