CPP/CPP01/ex04/main.cpp

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   main.cpp                                           :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: narnaud <narnaud@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/07/18 10:27:42 by narnaud           #+#    #+#             */
/*   Updated: 2022/07/18 12:46:16 by narnaud          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */


#include <iostream>
#include <fstream>
using std::string;
using std::ifstream;
using std::ofstream;


int	main(int argc, char **argv)
{
	string	text;
	string	buffer;
	string	filename;
	string	oldStr;
	string	newStr;
	int		oldLen;
	int		i = 0, fileLen = 0;

	if (argc != 4)
		return (EXIT_FAILURE);
	ifstream	input(argv[1]);
	if (!input.is_open()) {
		std::cout << "Invalid file." << std::endl;
		return (EXIT_FAILURE);
	}
	oldStr = argv[2];
	newStr = argv[3];
	while (getline(input, buffer)) {
		text += buffer;
		text += '\n';
	}
	input.close();
	fileLen = text.length();
	oldLen = oldStr.length();
	while (i < fileLen)
	{
		i = text.find(oldStr, i);
		if (i == -1)
			break ;
		text.erase(i, oldLen);
		text.insert(i, newStr);
	}
	filename = argv[1];
	ofstream	output(filename.append(".replace"));
	output << text;
	output.close();
	return (EXIT_SUCCESS);
}