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cuberite-2a/src/Protocol/Packetizer.cpp

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// Packetizer.cpp
// Implements the cPacketizer class representing a wrapper for sending a single packet over a protocol.
#include "Globals.h"
#include "Packetizer.h"
/** Converts the hex digit character to its value. */
static UInt8 HexDigitValue(char a_Character)
{
switch (a_Character)
{
case '0': return 0;
case '1': return 1;
case '2': return 2;
case '3': return 3;
case '4': return 4;
case '5': return 5;
case '6': return 6;
case '7': return 7;
case '8': return 8;
case '9': return 9;
case 'a': return 10;
case 'b': return 11;
case 'c': return 12;
case 'd': return 13;
case 'e': return 14;
case 'f': return 15;
case 'A': return 10;
case 'B': return 11;
case 'C': return 12;
case 'D': return 13;
case 'E': return 14;
case 'F': return 15;
default:
{
LOGWARNING("Bad hex digit: %c", a_Character);
ASSERT(!"Bad hex digit");
return 0;
}
}
}
////////////////////////////////////////////////////////////////////////////////
// cPacketizer:
cPacketizer::~cPacketizer()
{
m_Protocol.SendPacket(*this);
}
void cPacketizer::WriteByteAngle(double a_Angle)
{
WriteBEInt8(static_cast<Int8>(255 * a_Angle / 360));
}
void cPacketizer::WriteFPInt(double a_Value)
{
WriteBEInt32(static_cast<Int32>(a_Value * 32));
}
void cPacketizer::WriteUUID(const AString & a_UUID)
{
if (a_UUID.length() != 32)
{
LOGWARNING("%s: Attempt to send a bad uuid (length isn't 32): %s", __FUNCTION__, a_UUID.c_str());
ASSERT(!"Wrong uuid length!");
return;
}
for (size_t i = 0; i < 32; i += 2)
{
auto val = static_cast<UInt8>(HexDigitValue(a_UUID[i]) << 4 | HexDigitValue(a_UUID[i + 1]));
VERIFY(m_Out.WriteBEUInt8(val));
}
}