#include "String.h"
#include <cstring>

void String::copyFrom(const String& other) {
	length = other.length;
	str = new char[length + 1];
	strncpy(str, other.str, length + 1);
}

void String::free() {
	delete[] str;
}

String::String(const char* str) {
	length = strlen(str);
	this->str = new char[length + 1];
	strncpy(this->str, str, length + 1);
}

String::String() : String("") {}

String::String(const String& other) {
	copyFrom(other);
}

String& String::operator=(const String& other) {
	if (this != &other) {
		free();
		copyFrom(other);
	}
	return *this;
}

String::~String() {
	free();
}

std::ostream& operator<<(std::ostream& ostr, const String& str) {
	return ostr << str.str;
}