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src/Bytes.cpp 9e0fb0258103d1bab3e0e4cf812db1506928bbb6 (9e0fb025) Text, 2.73 KB
#include "Bytes.h"
using namespace RNS;
void Bytes::ownData() {
if (!_data) {
newData();
}
else if (!_owner) {
Data *data;
if (!_data->empty()) {
//extreme("Bytes is creating a writable copy of its shared data");
data = new Data(*_data.get());
}
else {
//extreme("Bytes is creating its own data because shared is empty");
data = new Data();
}
_data = SharedData(data);
_owner = true;
}
}
int8_t Bytes::compare(const Bytes& bytes) const {
if (_data == bytes._data) {
return 0;
}
else if (!_data) {
return -1;
}
else if (!bytes._data) {
return 1;
}
else if (*_data < *(bytes._data)) {
return -1;
}
else if (*_data > *(bytes._data)) {
return 1;
}
else {
return 0;
}
}
void Bytes::assignHex(const char* hex) {
// if assignment is empty then clear data and don't bother creating new
if (hex == nullptr || hex[0] == 0) {
_data = nullptr;
_owner = true;
return;
}
newData();
size_t len = strlen(hex);
for (size_t i = 0; i < len; i += 2) {
uint8_t byte = (hex[i] % 32 + 9) % 25 * 16 + (hex[i+1] % 32 + 9) % 25;
_data->push_back(byte);
}
}
void Bytes::appendHex(const char* hex) {
// if append is empty then do nothing
if (hex == nullptr || hex[0] == 0) {
return;
}
ownData();
size_t len = strlen(hex);
for (size_t i = 0; i < len; i += 2) {
uint8_t byte = (hex[i] % 32 + 9) % 25 * 16 + (hex[i+1] % 32 + 9) % 25;
_data->push_back(byte);
}
}
const char hex_upper_chars[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
const char hex_lower_chars[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
std::string RNS::hexFromByte(uint8_t byte, bool upper /*= true*/) {
std::string hex;
if (upper) {
hex += hex_upper_chars[ (byte& 0xF0) >> 4];
hex += hex_upper_chars[ (byte& 0x0F) >> 0];
}
else {
hex += hex_lower_chars[ (byte& 0xF0) >> 4];
hex += hex_lower_chars[ (byte& 0x0F) >> 0];
}
return hex;
}
std::string Bytes::toHex(bool upper /*= true*/) const {
if (!_data) {
return "";
}
std::string hex;
for (uint8_t byte : *_data) {
if (upper) {
hex += hex_upper_chars[ (byte& 0xF0) >> 4];
hex += hex_upper_chars[ (byte& 0x0F) >> 0];
}
else {
hex += hex_lower_chars[ (byte& 0xF0) >> 4];
hex += hex_lower_chars[ (byte& 0x0F) >> 0];
}
}
return hex;
}
// mid
Bytes Bytes::mid(size_t beginpos, size_t len) const {
if (!_data || beginpos >= size()) {
return NONE;
}
if ((beginpos + len) >= size()) {
len = (size() - beginpos);
}
return {data() + beginpos, len};
}
// to end
Bytes Bytes::mid(size_t beginpos) const {
if (!_data || beginpos >= size()) {
return NONE;
}
return {data() + beginpos, size() - beginpos};
}
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