file_reader.cpp

//
// Created by gosha on 10/26/2021.
//

#include "headers/file_reader.h"

#include <fstream>
#include <cassert>
#include <cstddef>
#include <iostream>

File_Reader::File_Reader(const char *fn) : file_name(fn) {
    fin.open(file_name, std::ios::in);
    assert(fin.is_open() && "File opening failure!");
}

File_Reader::~File_Reader() {
    fin.close();
}

bool File_Reader::float_reading(float &f_out) {
    if (fin >> f_out) {
        return true;
    }
    std::cout << "Unable to read a floating point number, possibly incomplete data or data type mismatch.\n";
    return false;
}

bool File_Reader::sizet_reading(std::size_t &s_out) {
    if (fin >> s_out) {
        return true;
    }
    std::cout << "Unable to read a size_t data, possibly incomplete data or data type mismatch.\n";
    return false;
}

bool File_Reader::char_reading(char &c_out) {
    if (fin >> c_out) {
        return true;
    }

    return false;
}

bool File_Reader::string_reading(std::string &s_out) {
    if (!std::getline(fin, s_out)) {  //just reading '\n' symbol before line
        return false;
    }

    if (std::getline(fin, s_out)) {
        return true;
    }

    return false;
}