From e9321631c5173a9ac704a68a72f11fbb21af418e Mon Sep 17 00:00:00 2001
From: Persson-dev <sim16.prib@gmail.com>
Date: Fri, 2 Feb 2024 14:41:31 +0100
Subject: [PATCH] save and load

---
 matricies/matrice3x3.mat          |  4 +++
 matricies/matrice3x3echelonne.mat |  4 +++
 src/Matrix.h                      | 45 +++++++++++++++++++++++++------
 src/main.cpp                      | 21 ++++++---------
 4 files changed, 53 insertions(+), 21 deletions(-)
 create mode 100644 matricies/matrice3x3.mat
 create mode 100644 matricies/matrice3x3echelonne.mat

diff --git a/matricies/matrice3x3.mat b/matricies/matrice3x3.mat
new file mode 100644
index 0000000..8751921
--- /dev/null
+++ b/matricies/matrice3x3.mat
@@ -0,0 +1,4 @@
+3 3
+1 2 3 
+4 5 6 
+1 2 3 
diff --git a/matricies/matrice3x3echelonne.mat b/matricies/matrice3x3echelonne.mat
new file mode 100644
index 0000000..e7cd658
--- /dev/null
+++ b/matricies/matrice3x3echelonne.mat
@@ -0,0 +1,4 @@
+3 3
+1 0 -1 
+0 1 2 
+0 0 0 
diff --git a/src/Matrix.h b/src/Matrix.h
index db148b1..8f2c3db 100644
--- a/src/Matrix.h
+++ b/src/Matrix.h
@@ -1,9 +1,10 @@
 #pragma once
 
-#include <vector>
 #include <algorithm>
 #include <cmath>
+#include <fstream>
 #include <iostream>
+#include <vector>
 
 template <typename T>
 static bool EqualZero(T var) {
@@ -19,9 +20,17 @@ class Matrix {
 	std::vector<T> m_Data;
 
   public:
+	Matrix(const std::string& fileNameInput) {
+		Load(fileNameInput);
+	}
 	Matrix(std::size_t lignes, std::size_t colonnes) : m_Lignes(lignes), m_Colonnes(colonnes), m_Dimension(lignes * colonnes) {
 		m_Data.resize(m_Dimension);
 	}
+	Matrix(std::size_t lignes, std::size_t colonnes, std::initializer_list<T>&& initList) :
+		m_Lignes(lignes), m_Colonnes(colonnes), m_Dimension(lignes * colonnes) {
+		m_Data = initList;
+		m_Data.resize(m_Dimension);
+	}
 	~Matrix() {}
 
 	void Print() const {
@@ -52,15 +61,35 @@ class Matrix {
 		}
 	}
 
-	/*
-	void DivideLine(T div, std::size_t line){
-		for (size_t i = 0; i < count; i++)
-		{
-
+	void Save(const std::string& fileName) {
+		std::ofstream out{fileName};
+		if (!out) {
+			std::cerr << "Impossible de sauvegarder la matrice !\n";
+			return;
+		}
+		out << m_Lignes << " " << m_Colonnes << "\n";
+		for (std::size_t i = 0; i < m_Lignes; i++) {
+			for (std::size_t j = 0; j < m_Colonnes; j++) {
+				out << at(i, j) << " ";
+			}
+			out << "\n";
+		}
+	}
+
+	void Load(const std::string& filename) {
+		std::ifstream in{filename};
+		if (!in) {
+			std::cerr << "Impossible de charger la matrice !\n";
+			return;
+		}
+		in >> m_Lignes >> m_Colonnes;
+		m_Data.resize(m_Lignes * m_Colonnes);
+		for (std::size_t i = 0; i < m_Lignes; i++) {
+			for (std::size_t j = 0; j < m_Colonnes; j++) {
+				in >> at(i, j);
+			}
 		}
-
 	}
-	*/
 
 	void GaussJordan() {
 		int r = -1;
diff --git a/src/main.cpp b/src/main.cpp
index 4513251..94e04f9 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,25 +1,16 @@
 #include "Matrix.h"
 
 void test() {
-	Matrix<float> mat(3, 3);
-	mat.at(0, 0) = mat.at(2, 0) = 1;
-	mat.at(0, 1) = mat.at(2, 1) = 2;
-	mat.at(0, 2) = mat.at(2, 2) = 3;
-
-	mat.at(1, 0) = 4;
-	mat.at(1, 1) = 5;
-	mat.at(1, 2) = 6;
-
+	Matrix<float> mat{"matrice3x3.mat"};
 	mat.Print();
+	//mat.Save("matrice3x3.mat");
 	mat.GaussJordan();
 	std::cout << "\nResultat :\n";
 	mat.Print();
+	mat.Save("matrice3x3echelonne.mat");
 }
 
-int main(int argc, char** argv) {
-	test();
-
-	std::cout << "hello world!" << std::endl;
+void prompt() {
 	std::cout << "Quelle est le nombre de lignes de votre matrice ?" << std::endl;
 	std::size_t lignes;
 	std::cin >> lignes;
@@ -36,6 +27,10 @@ int main(int argc, char** argv) {
 	mat.GaussJordan();
 	std::cout << std::endl;
 	mat.Print();
+}
 
+int main(int argc, char** argv) {
+	test();
+	prompt();
 	return 0;
 }