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#include <iostream>
#include <fstream>
#include <cstring>
// Exercise 1
int fileSize(std::ifstream& file) {
int currPos = file.tellg();
file.seekg(0, std::ios::end);
int size = file.tellg();
file.seekg(currPos, std::ios::beg);
return size;
}
void duplicate(const char* filePath, const char* newFile, int n) {
std::ifstream inFile(filePath);
int inFileSize = fileSize(inFile);
std::ofstream outFile(newFile);
for (int i = 0; i < inFileSize * n; i++) {
outFile.put(inFile.get());
if (inFile.tellg() == inFileSize)
inFile.seekg(0, std::ios::beg);
}
outFile.close();
inFile.close();
}
void ex1() {
duplicate("dupeSrc.txt", "dupeDest.txt", 3);
}
// Exercise 2
struct Task {
private:
char* name = nullptr;
size_t nameLen;
char* description = nullptr;
size_t descriptionLen;
int points;
void setStringProp(char*& prop, size_t& propLen, const char* newVal, int valSize) {
delete[] prop;
prop = new char[valSize];
for (int i = 0; i < valSize; i++)
prop[i] = newVal[i];
propLen = valSize;
}
public:
Task() {
this->set_name("", 1);
this->set_description("", 1);
this->set_points(0);
}
Task(const char* name, const char* desc, int points) {
this->set_name(name, strlen(name) + 1); // +1 so we also capture the '\0'
this->set_description(desc, strlen(desc) + 1); // +1 so we also capture the '\0'
this->set_points(points);
}
~Task() {
delete[] this->name;
delete[] this->description;
}
void writeToFile(std::ofstream& file) const {
file.write((const char*)&this->nameLen, sizeof(this->nameLen));
file.write(this->name, nameLen);
file.write((const char*)&this->descriptionLen, sizeof(this->descriptionLen));
file.write(this->description, descriptionLen);
file.write((const char*)&this->points, sizeof(this->points));
}
void writeToFile(const char* name) const {
std::ofstream file(name);
this->writeToFile(file);
file.close();
}
void readFromFile(std::ifstream& file) {
file.read((char*)&this->nameLen, sizeof(this->nameLen));
file.read(this->name, this->nameLen);
file.read((char*)&this->descriptionLen, sizeof(this->descriptionLen));
file.read(this->description, this->descriptionLen);
file.read((char*)&this->points, sizeof(this->points));
}
void readFromFile(const char* fileName) {
std::ifstream file(fileName);
this->readFromFile(file);
file.close();
}
void set_name(const char* newName, int newNameSize) {
this->setStringProp(this->name, this->nameLen, newName, newNameSize);
}
const char* get_name() const {
return this->name;
}
int get_nameLen() const {
return this->nameLen;
}
void set_description(const char* newDesc, int newDescSize) {
this->setStringProp(this->description, this->descriptionLen, newDesc, newDescSize);
}
const char* get_description() const {
return this->description;
}
int get_descriptionLen() const {
return this->descriptionLen;
}
void set_points(int points) {
this->points = points;
}
int get_points() const {
return this->points;
}
};
const int EXAM_TASK_CNT = 3;
struct Exam {
private:
Task tasks[EXAM_TASK_CNT];
int passingPoints;
public:
Exam() {}
Exam(const Task* elems, int passingPoints) {
for (int i = 0; i < EXAM_TASK_CNT; i++) {
this->tasks[i].set_name(elems[i].get_name(), elems[i].get_nameLen());
this->tasks[i].set_description(elems[i].get_description(), elems[i].get_descriptionLen());
this->tasks[i].set_points(elems[i].get_points());
}
this->set_passingPoints(passingPoints);
}
void writeToFile(std::ofstream& file) const {
file.write((const char*)&this->passingPoints, sizeof(this->passingPoints));
for (int i = 0; i < EXAM_TASK_CNT; i++)
this->tasks[i].writeToFile(file);
}
void writeToFile(const char* fileName) const {
std::ofstream file(fileName, std::ios::binary);
this->writeToFile(file);
file.close();
}
void readFromFile(std::ifstream& file) {
file.read((char*)&this->passingPoints, sizeof(this->passingPoints));
for (int i = 0; i < EXAM_TASK_CNT; i++)
this->tasks[i].readFromFile(file);
}
void readFromFile(const char* fileName) {
std::ifstream file(fileName, std::ios::binary);
this->readFromFile(file);
file.close();
}
void set_passingPoints(int points) {
this->passingPoints = points;
}
int get_passingPoints() const {
return this->passingPoints;
}
int getMax() {
int acc = 0;
for (int i = 0; i < EXAM_TASK_CNT; i++)
acc += this->tasks[i].get_points();
return acc;
}
};
void ex2() {
Task tasks[EXAM_TASK_CNT] = { Task("Wow1", "Bruh1", 1), Task("Wow2", "Bruh2", 2), Task("Wow3", "Bruh3", 3) };
Exam ex(tasks, 4);
ex.writeToFile("test.txt");
Exam ex1;
ex1.readFromFile("test.txt");
ex1.writeToFile("test1.txt");
std::cout << ex1.getMax() << std::endl;
}
int main() {
ex2();
}
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