blob.h

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#pragma once
 
#include "ku_string.h"
 
namespace kuzu {
namespace common {
 
struct blob_t {
 ku_string_t value;
};
 
struct HexFormatConstants {
 // map of integer -> hex value.
 static constexpr const char* HEX_TABLE = "0123456789ABCDEF";
 // reverse map of byte -> integer value, or -1 for invalid hex values.
 static const int HEX_MAP[256];
 static constexpr const uint64_t NUM_BYTES_TO_SHIFT_FOR_FIRST_BYTE = 4;
 static constexpr const uint64_t SECOND_BYTE_MASK = 0x0F;
 static constexpr const char PREFIX[] = "\\x";
 static constexpr const uint64_t PREFIX_LENGTH = 2;
 static constexpr const uint64_t FIRST_BYTE_POS = PREFIX_LENGTH;
 static constexpr const uint64_t SECOND_BYTES_POS = PREFIX_LENGTH + 1;
 static constexpr const uint64_t LENGTH = 4;
};
 
struct Blob {
 static std::string toString(const uint8_t* value, uint64_t len);
 
 static inline std::string toString(const blob_t& blob) {
 return toString(blob.value.getData(), blob.value.len);
 }
 
 static uint64_t getBlobSize(const ku_string_t& blob);
 
 static uint64_t fromString(const char* str, uint64_t length, uint8_t* resultBuffer);
 
 template<typename T>
 static inline T getValue(const blob_t& data) {
 return *reinterpret_cast<const T*>(data.value.getData());
 }
 template<typename T>
 // NOLINTNEXTLINE(readability-non-const-parameter): Would cast away qualifiers.
 static inline T getValue(char* data) {
 return *reinterpret_cast<T*>(data);
 }
 
private:
 static void validateHexCode(const uint8_t* blobStr, uint64_t length, uint64_t curPos);
};
 
} // namespace common
} // namespace kuzu