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#include "Train.h"
#include <iostream>
#include <cstring>
#include <fstream>
void Train::free() {
delete[] regionsFileName;
delete[] currentRegion;
}
void Train::copyFrom(const Train& other) {
strcpy(this->model, other.model);
this->railID = other.railID;
this->regionsFileName = new char[strlen(other.regionsFileName) + 1];
strcpy(this->regionsFileName, other.regionsFileName);
this->currentRegion = new char[strlen(other.currentRegion) + 1];
strcpy(this->currentRegion, other.currentRegion);
}
Train::Train() {
model[0] = '\0';
railID = 0;
regionsFileName = currentRegion = nullptr;
}
Train::~Train() {
free();
}
Train::Train(const Train& other) {
copyFrom(other);
}
Train& Train::operator=(const Train& other) {
if (this != &other) {
free();
copyFrom(other);
}
return *this;
}
Train::Train(Train&& other) {
strcpy(this->model, other.model);
this->railID = other.railID;
this->regionsFileName = other.regionsFileName;
other.regionsFileName = nullptr;
this->currentRegion = other.currentRegion;
other.currentRegion = nullptr;
}
Train& Train::operator=(Train&& other) {
if (this != &other) {
free();
strcpy(this->model, other.model);
this->railID = other.railID;
this->regionsFileName = other.regionsFileName;
other.regionsFileName = nullptr;
this->currentRegion = other.currentRegion;
other.currentRegion = nullptr;
}
return *this;
}
void Train::setCurrentRegion(std::ifstream& inFile) {
int start = inFile.tellg();
while (!inFile.eof() && inFile.peek() != '\n') {
inFile.get();
}
if (inFile.eof()) {
inFile.clear();
inFile.seekg(0, std::ios::end);
}
int length = inFile.tellg();
this->currentRegion = new char[length + 1];
inFile.seekg(start, std::ios::beg);
inFile.getline(this->currentRegion, length);
this->currentRegion[length] = '\0';
}
Train::Train(const char model[128], unsigned railID, const char* regionsFileName) {
strcpy(this->model, model);
this->railID = railID;
this->regionsFileName = new char[strlen(regionsFileName) + 1];
strcpy(this->regionsFileName, regionsFileName);
std::ifstream inFile(regionsFileName);
if (!inFile.is_open()) {
throw "Couldn't open regions file!";
}
setCurrentRegion(inFile);
inFile.close();
}
// Обикаля сегашния ред във файла и сравнява всяка буква със съответната от str
// Във всички случаи предвижва inFile напред към следващия ред
bool fileStringEq(std::ifstream& inFile, const char* str) {
if (inFile.eof()) {
inFile.close();
throw -1;
}
bool equal = true;
while (!inFile.eof() && inFile.peek() != '\n') {
if (inFile.peek() != *str) {
equal = false;
}
inFile.get();
if (*str != '\0') str++;
}
if (!inFile.eof()) {
inFile.get();
}
return equal && *str == '\0';
}
void Train::TransferNextRegion() {
std::ifstream inFile(regionsFileName);
if (!inFile.is_open()) {
throw "Couldn't open regions file!";
}
while (!fileStringEq(inFile, currentRegion)) {
}
setCurrentRegion(inFile);
inFile.close();
}
void Train::SwitchRailLine(unsigned railID, const char* regionsFileName) {
this->railID = railID;
delete[] this->regionsFileName;
this->regionsFileName = new char[strlen(regionsFileName) + 1];
strcpy(this->regionsFileName, regionsFileName);
std::ifstream inFile(regionsFileName);
if (!inFile.is_open()) {
throw "Couldn't open regions file!";
}
setCurrentRegion(inFile);
inFile.close();
}
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