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#include "Packet.hpp"
Packet::Packet(int id) {
Field fLen;
fLen.SetVarInt(0);
m_fields.push_back(fLen);
Field fId;
fId.SetVarInt(id);
m_fields.push_back(fId);
}
Packet Packet::operator=(Packet other) {
other.swap(*this);
return *this;
}
void Packet::swap(Packet &other) {
std::swap(m_fields, other.m_fields);
std::swap(m_data, other.m_data);
std::swap(m_parsePtr, other.m_parsePtr);
std::swap(m_dataLength, other.m_dataLength);
}
void Packet::CopyToBuff(byte *ptr) {
m_fields[0].SetVarInt(GetLength() - m_fields[0].GetLength());
for (auto &it:m_fields) {
it.CopyToBuff(ptr);
ptr += it.GetLength();
}
}
void Packet::ParseField(FieldType type, size_t len) {
if (type == ByteArray && len == 0)
throw 118;
Field f = FieldParser::Parse(type, m_parsePtr, len);
m_fields.push_back(f);
m_parsePtr += f.GetLength();
if (m_parsePtr == m_data + m_dataLength) {
delete[] m_data;
m_data = nullptr;
m_dataLength = 0;
m_parsePtr = nullptr;
}
}
Packet::Packet(byte *data) {
Field fLen = FieldParser::Parse(VarIntType, data);
data += fLen.GetLength();
Field fId = FieldParser::Parse(VarIntType, data);
data += fId.GetLength();
m_dataLength = fLen.GetVarInt() - fId.GetLength();
m_data = new byte[m_dataLength];
std::copy(data, data + m_dataLength, m_data);
m_parsePtr = m_data;
m_fields.push_back(fLen);
m_fields.push_back(fId);
}
Field &Packet::GetField(int id) {
if (id < -2 || id >= (int) m_fields.size() - 2)
throw 111;
return m_fields[id + 2];
}
size_t Packet::GetLength() {
size_t len = 0;
for (auto &it:m_fields) {
len += it.GetLength();
}
return len + m_dataLength;
}
void Packet::AddField(Field field) {
m_fields.push_back(field);
}
int Packet::GetId() {
return m_fields[1].GetVarInt();
}
Packet::Packet(const Packet &other) {
if (other.m_dataLength > 0) {
m_dataLength = other.m_dataLength;
m_data = new byte[m_dataLength];
m_parsePtr = m_data + (other.m_data - other.m_parsePtr);
std::copy(other.m_data, other.m_data + m_dataLength, m_data);
}
m_fields = other.m_fields;
}
void Packet::ParseFieldArray(Field &field, FieldType type, size_t len) {
Field f = FieldParser::Parse(type, m_parsePtr, len);
field.Attach(f);
m_parsePtr += f.GetLength();
if (m_parsePtr == m_data + m_dataLength) {
delete[] m_data;
m_data = nullptr;
m_dataLength = 0;
m_parsePtr = nullptr;
}
}
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