VoxelEngine/src/coders/byte_utils.hpp
2024-09-04 15:41:51 +03:00

79 lines
2.3 KiB
C++

#pragma once
#include <string>
#include <vector>
#include "typedefs.hpp"
class ByteBuilder {
std::vector<ubyte> buffer;
public:
/// @brief Write one byte (8 bit unsigned integer)
void put(ubyte b);
/// @brief Write c-string (bytes array terminated with '\00')
void putCStr(const char* str);
/// @brief Write signed 16 bit little-endian integer
void putInt16(int16_t val);
/// @brief Write signed 32 bit integer
void putInt32(int32_t val);
/// @brief Write signed 64 bit integer
void putInt64(int64_t val);
/// @brief Write 32 bit floating-point number
void putFloat32(float val);
/// @brief Write 64 bit floating-point number
void putFloat64(double val);
/// @brief Write string (uint32 length + bytes)
void put(const std::string& s);
/// @brief Write sequence of bytes without any header
void put(const ubyte* arr, size_t size);
void set(size_t position, ubyte val);
void setInt16(size_t position, int16_t val);
void setInt32(size_t position, int32_t val);
void setInt64(size_t position, int64_t val);
inline size_t size() const {
return buffer.size();
}
inline const ubyte* data() const {
return buffer.data();
}
std::vector<ubyte> build();
};
class ByteReader {
const ubyte* data;
size_t size;
size_t pos;
public:
ByteReader(const ubyte* data, size_t size);
ByteReader(const ubyte* data);
void checkMagic(const char* data, size_t size);
/// @brief Read one byte (unsigned 8 bit integer)
ubyte get();
/// @brief Read one byte (unsigned 8 bit integer) without pointer move
ubyte peek();
/// @brief Read signed 16 bit little-endian integer
int16_t getInt16();
/// @brief Read signed 32 bit little-endian integer
int32_t getInt32();
/// @brief Read signed 64 bit little-endian integer
int64_t getInt64();
/// @brief Read 32 bit floating-point number
float getFloat32();
/// @brief Read 64 bit floating-point number
double getFloat64();
/// @brief Read C-String
const char* getCString();
/// @brief Read string with unsigned 32 bit number before (length)
std::string getString();
/// @return true if there is at least one byte remains
bool hasNext() const;
const ubyte* pointer() const;
void skip(size_t n);
};