X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Usermode%2FApplications%2Faxwin4_src%2FCommon%2Fserialisation.cpp;h=016b000456aaf99733c9d50e93355701f0a60474;hb=HEAD;hp=4388eab7e9e5cfeb7a7aca179ab9434d2b73f79f;hpb=d74e5edc75b4fca94b71eef800b9d3a04760da05;p=tpg%2Facess2.git

diff --git a/Usermode/Applications/axwin4_src/Common/serialisation.cpp b/Usermode/Applications/axwin4_src/Common/serialisation.cpp
index 4388eab7..016b0004 100644
--- a/Usermode/Applications/axwin4_src/Common/serialisation.cpp
+++ b/Usermode/Applications/axwin4_src/Common/serialisation.cpp
@@ -7,34 +7,99 @@
  */
 #include <serialisation.hpp>
 #include <cstddef>
+#include <stdexcept>
+#include <acess/sys.h>	// SysDebug
 
 namespace AxWin {
 
-CDeserialiser::CDeserialiser(size_t Length, const uint8_t *Buffer):
-	m_length(Length),
-	m_data(Buffer),
+CDeserialiser::CDeserialiser(const ::std::vector<uint8_t>& vector):
+	m_vect(vector),
 	m_offset(0)
 {
 }
+CDeserialiser::CDeserialiser(::std::vector<uint8_t>&& vector):
+	m_vect(vector),
+	m_offset(0)
+{
+}
+CDeserialiser& CDeserialiser::operator=(const CDeserialiser& x)
+{
+	m_vect = x.m_vect;
+	m_offset = x.m_offset;
+}
+
+bool CDeserialiser::IsConsumed() const
+{
+	return m_offset == m_vect.size();
+}
 
 ::uint8_t CDeserialiser::ReadU8()
 {
-	return 0;
+	RangeCheck("CDeserialiser::ReadU8", 1);
+	uint8_t rv = m_vect[m_offset];
+	m_offset ++;
+	return rv;
 }
 
 ::uint16_t CDeserialiser::ReadU16()
 {
-	return 0;
+	RangeCheck("CDeserialiser::ReadU16", 2);
+	uint16_t rv = m_vect[m_offset] | ((uint16_t)m_vect[m_offset+1] << 8);
+	m_offset += 2;
+	return rv;
 }
 
 ::int16_t CDeserialiser::ReadS16()
 {
-	return 0;
+	uint16_t rv_u = ReadU16();
+	if( rv_u < 0x8000 )
+		return rv_u;
+	else
+		return ~rv_u + 1;
+}
+
+::uint32_t CDeserialiser::ReadU32()
+{
+	uint32_t rv = ReadU16();
+	rv |= (uint32_t)ReadU16() << 16;
+	return rv;
+}
+
+::uint64_t CDeserialiser::ReadU64()
+{
+	uint64_t rv = ReadU32();
+	rv |= (uint64_t)ReadU32() << 32;
+	return rv;
+}
+
+const ::std::vector<uint8_t> CDeserialiser::ReadBuffer()
+{
+	RangeCheck("CDeserialiser::ReadBuffer(len)", 2);
+	size_t	size = ReadU16();
+	
+	auto range_start = m_vect.begin() + int(m_offset);
+	::std::vector<uint8_t> ret( range_start, range_start + int(size) );
+	m_offset += size;
+	return ret;
 }
 
-::std::string CDeserialiser::ReadString()
+const ::std::string CDeserialiser::ReadString()
 {
-	return "";
+	RangeCheck("CDeserialiser::ReadString(len)", 1);
+	uint8_t len = ReadU8();
+	
+	RangeCheck("CDeserialiser::ReadString(data)", len);
+	::std::string ret( reinterpret_cast<const char*>(m_vect.data()+m_offset), len );
+	m_offset += len;
+	return ret;
+}
+
+void CDeserialiser::RangeCheck(const char *Method, size_t bytes) throw(::std::out_of_range)
+{
+	if( m_offset + bytes > m_vect.size() ) {
+		::_SysDebug("%s - out of range %i+%i >= %i", Method, m_offset, bytes, m_vect.size());
+		throw ::std::out_of_range(Method);
+	}
 }
 
 CSerialiser::CSerialiser()
@@ -65,21 +130,53 @@ void CSerialiser::WriteS16(::int16_t Value)
 	}
 }
 
+void CSerialiser::WriteU32(::uint32_t Value)
+{
+	m_data.push_back(Value & 0xFF);
+	m_data.push_back(Value >>  8);
+	m_data.push_back(Value >> 16);
+	m_data.push_back(Value >> 24);
+}
+
+void CSerialiser::WriteU64(::uint64_t Value)
+{
+	WriteU32(Value);
+	WriteU32(Value>>32);
+}
+
+void CSerialiser::WriteBuffer(size_t n, const void* val)
+{
+	const uint8_t*	val8 = static_cast<const uint8_t*>(val);
+	if( n > 0xFFFF )
+		throw ::std::length_error("CSerialiser::WriteBuffer");
+	m_data.reserve( m_data.size() + 2 + n );
+	WriteU16(n);
+	for( size_t i = 0; i < n; i ++ )
+		m_data.push_back(val8[i]);
+}
+
 void CSerialiser::WriteString(const char* val, size_t n)
 {
-	//if( n >= 256 )
-	//	throw ::std::out_of_range("CSerialiser::WriteString");
+	if( n > 0xFF )
+		throw ::std::length_error("CSerialiser::WriteString");
+	m_data.reserve( m_data.size() + 1 + n );
 	WriteU8(n);
 	for( size_t i = 0; i < n; i ++ )
-		WriteU8(val[i]);
+		m_data.push_back(val[i]);
 }
 
 void CSerialiser::WriteSub(const CSerialiser& val)
 {
+	// TODO: Append reference to sub-buffer contents
 	m_data.reserve( m_data.size() + val.m_data.size() );
 	for( auto byte : val.m_data )
 		m_data.push_back( byte );
 }
 
+const ::std::vector<uint8_t>& CSerialiser::Compact()
+{
+	return m_data;
+}
+
 };	// namespace AxWin