Initial commit

src/Bytes.cpp

@@ -0,0 +1,88 @@
+#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 {
+		return 1;
+	}
+}
+
+char const hex_upper_chars[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
+char const hex_lower_chars[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
+
+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;
+}
+
+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;
+		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);
+	}
+}