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#include "BinaryReader.h"
#include "MemoryStream.h"
#include <cmath>
#include <stdexcept>
LUS::BinaryReader::BinaryReader(char* nBuffer, size_t nBufferSize) {
mStream = std::make_shared<MemoryStream>(nBuffer, nBufferSize);
}
LUS::BinaryReader::BinaryReader(Stream* nStream) {
mStream.reset(nStream);
}
LUS::BinaryReader::BinaryReader(std::shared_ptr<Stream> nStream) {
mStream = nStream;
}
void LUS::BinaryReader::Close() {
mStream->Close();
}
void LUS::BinaryReader::SetEndianness(Endianness endianness) {
this->mEndianness = endianness;
}
LUS::Endianness LUS::BinaryReader::GetEndianness() const {
return mEndianness;
}
void LUS::BinaryReader::Seek(int32_t offset, SeekOffsetType seekType) {
mStream->Seek(offset, seekType);
}
uint32_t LUS::BinaryReader::GetBaseAddress() {
return mStream->GetBaseAddress();
}
void LUS::BinaryReader::Read(int32_t length) {
mStream->Read(length);
}
void LUS::BinaryReader::Read(char* buffer, int32_t length) {
mStream->Read(buffer, length);
}
char LUS::BinaryReader::ReadChar() {
return (char)mStream->ReadByte();
}
int8_t LUS::BinaryReader::ReadInt8() {
return mStream->ReadByte();
}
int16_t LUS::BinaryReader::ReadInt16() {
int16_t result = 0;
mStream->Read((char*)&result, sizeof(int16_t));
if (mEndianness != Endianness::Native) {
result = BSWAP16(result);
}
return result;
}
int32_t LUS::BinaryReader::ReadInt32() {
int32_t result = 0;
mStream->Read((char*)&result, sizeof(int32_t));
if (mEndianness != Endianness::Native) {
result = BSWAP32(result);
}
return result;
}
uint8_t LUS::BinaryReader::ReadUByte() {
return (uint8_t)mStream->ReadByte();
}
uint16_t LUS::BinaryReader::ReadUInt16() {
uint16_t result = 0;
mStream->Read((char*)&result, sizeof(uint16_t));
if (mEndianness != Endianness::Native) {
result = BSWAP16(result);
}
return result;
}
uint32_t LUS::BinaryReader::ReadUInt32() {
uint32_t result = 0;
mStream->Read((char*)&result, sizeof(uint32_t));
if (mEndianness != Endianness::Native) {
result = BSWAP32(result);
}
return result;
}
uint64_t LUS::BinaryReader::ReadUInt64() {
uint64_t result = 0;
mStream->Read((char*)&result, sizeof(uint64_t));
if (mEndianness != Endianness::Native) {
result = BSWAP64(result);
}
return result;
}
float LUS::BinaryReader::ReadFloat() {
float result = NAN;
mStream->Read((char*)&result, sizeof(float));
if (mEndianness != Endianness::Native) {
float tmp;
char* dst = (char*)&tmp;
char* src = (char*)&result;
dst[3] = src[0];
dst[2] = src[1];
dst[1] = src[2];
dst[0] = src[3];
result = tmp;
}
if (std::isnan(result)) {
throw std::runtime_error("BinaryReader::ReadFloat(): Error reading stream");
}
return result;
}
double LUS::BinaryReader::ReadDouble() {
double result = NAN;
mStream->Read((char*)&result, sizeof(double));
if (mEndianness != Endianness::Native) {
double tmp;
char* dst = (char*)&tmp;
char* src = (char*)&result;
dst[7] = src[0];
dst[6] = src[1];
dst[5] = src[2];
dst[4] = src[3];
dst[3] = src[4];
dst[2] = src[5];
dst[1] = src[6];
dst[0] = src[7];
result = tmp;
}
if (std::isnan(result)) {
throw std::runtime_error("BinaryReader::ReadDouble(): Error reading stream");
}
return result;
}
std::string LUS::BinaryReader::ReadString() {
std::string res;
int numChars = ReadInt32();
for (int i = 0; i < numChars; i++) {
res += ReadChar();
}
return res;
}
std::string LUS::BinaryReader::ReadCString() {
std::string res;
unsigned char c = 0;
do {
if (mStream->GetBaseAddress() >= mStream->GetLength()) {
break;
}
c = ReadChar();
res += c;
} while (c != '\0');
return res;
}
std::vector<char> LUS::BinaryReader::ToVector() {
return mStream->ToVector();
}
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