From bc974067cbbc23a165f94fea351d55f7d92908a0 Mon Sep 17 00:00:00 2001
From: aortigos <angelortigosa02@gmail.com>
Date: Mon, 29 Sep 2025 07:25:49 +0200
Subject: [PATCH] New function for main loop

---
 ex04/main.cpp | 89 +++++++++++++++++++++++++++++++--------------------
 1 file changed, 55 insertions(+), 34 deletions(-)

diff --git a/ex04/main.cpp b/ex04/main.cpp
index f86326e..a3913a3 100644
--- a/ex04/main.cpp
+++ b/ex04/main.cpp
@@ -6,13 +6,31 @@
 /*   By: aortigos <aortigos@student.42malaga.com    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/09/06 14:44:18 by aortigos          #+#    #+#             */
-/*   Updated: 2025/09/14 13:50:49 by aortigos         ###   ########.fr       */
+/*   Updated: 2025/09/29 07:24:35 by aortigos         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include <iostream>
 #include <fstream>
 
+void	replaceAndWrite(std::ifstream &infile, std::ofstream &outfile,
+							const std::string &s1, const std::string &s2)
+{
+	std::string	line;
+
+	line = "";
+	while (std::getline(infile, line)) {
+		size_t	pos = 0;
+		while ((pos = line.find(s1, pos)) != std::string::npos)
+		{
+			line.erase(pos, s1.length());
+			line.insert(pos, s2);
+			pos += s2.length();
+		}
+		outfile << line << std::endl;
+	}	
+}
+
 int	main(int argc, char **argv)
 {
 	std::string	filename;
@@ -20,41 +38,44 @@ int	main(int argc, char **argv)
 	std::string	s2;
 	std::string	line;
 
-	if (argc == 4)
+	if (argc != 4)
 	{
-		filename = argv[1];
-		s1 = argv[2];
-		s2 = argv[3];
-		line = "";
-		
-		std::ifstream infile(filename.c_str(), std::ifstream::in);
-		if (!infile.is_open())
-		{
-			std::cout << "Ha ocurrido un error en el infile" << std::endl;
-			return (1);
-		}
-
-		std::ofstream outfile((filename + ".replace").c_str());
-		if(!outfile.is_open())
-		{
-			std::cout << "Hubo un error en el outfile" << std::endl;
-			return (1);
-		}
-
-		while (std::getline(infile, line)) {
-			size_t	pos = 0;
-			while ((pos = line.find(s1, pos)) != std::string::npos)
-			{
-				line.erase(pos, s1.length());
-				line.insert(pos, s2);
-				pos += s2.length();
-			}
-			outfile << line << std::endl;
-		}
-		infile.close();
-		outfile.close();
-	} else {
 		std::cout << "Uso: ./sed <filename> <s1> <s2>" << std::endl;
+		return (1);
 	}
+	filename = argv[1];
+	s1 = argv[2];
+	s2 = argv[3];
+	line = "";
+
+	// Comprobamos que s1 no sea un string vacío
+	if (s1.empty()) {
+		std::cout << "s1 no puede estar vacío" << std::endl;
+		return (1);
+	}
+
+	// Intentamos abrir el input
+	std::ifstream infile(filename.c_str(), std::ifstream::in);
+	if (!infile.is_open())
+	{
+		std::cout << "Ha ocurrido un error en el infile" << std::endl;
+		return (1);
+	}
+
+	// Intentamos abrir el output
+	std::ofstream outfile((filename + ".replace").c_str());
+	if(!outfile.is_open())
+	{
+		std::cout << "Hubo un error en el outfile" << std::endl;
+		return (1);
+	}
+
+	// Ejecutamos el bucle para reemplazar
+	replaceAndWrite(infile, outfile, s1, s2);
+
+	// Cerramos los archivos
+	infile.close();
+	outfile.close();
+
 	return (0);
 }