From 597d48ba0fce30cd7d6de158affb7335afd2fb63 Mon Sep 17 00:00:00 2001
From: xoy <me@xoy.dev>
Date: Thu, 13 Jun 2024 17:02:39 +0200
Subject: [PATCH] [First commit]

Basic caesar encryption.
---
 .gitignore |  1 +
 caesar.cpp | 34 ++++++++++++++++++++++++++++++++++
 caesar.hpp | 19 +++++++++++++++++++
 main.cpp   | 25 +++++++++++++++++++++++++
 makefile   | 21 +++++++++++++++++++++
 5 files changed, 100 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 caesar.cpp
 create mode 100644 caesar.hpp
 create mode 100644 main.cpp
 create mode 100644 makefile

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..dbe9c82
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.vscode/
\ No newline at end of file
diff --git a/caesar.cpp b/caesar.cpp
new file mode 100644
index 0000000..c9bb5de
--- /dev/null
+++ b/caesar.cpp
@@ -0,0 +1,34 @@
+#include "caesar.hpp"
+#include <string>
+
+Caesar::Caesar(int rotation) {
+	setRotation(rotation);
+}
+
+void Caesar::setRotation(int rotation) {
+	this->rotation = rotation;
+}
+
+int Caesar::getRotation() {
+	return rotation;
+}
+
+char Caesar::encryptChar(char toEncrypt) {
+	char newChar = toEncrypt + rotation;
+
+	if(newChar > MAX) newChar -= MAX;
+
+	if(newChar < MIN) newChar += MIN;
+
+	return newChar;
+}
+
+std::string Caesar::encryptString(std::string toEncrypt) {
+	std::string encrypted = "";
+
+	for(int i = 0; i < toEncrypt.length(); i++) {
+		encrypted += encryptChar(toEncrypt[i]);
+	}
+
+	return encrypted;
+}
diff --git a/caesar.hpp b/caesar.hpp
new file mode 100644
index 0000000..16756d8
--- /dev/null
+++ b/caesar.hpp
@@ -0,0 +1,19 @@
+#ifndef CAESAR_H
+#define CAESAR_H
+
+#include <string>
+
+class Caesar {
+	public:
+		Caesar(int rotation);
+		void setRotation(int rotation);
+		int getRotation();
+		char encryptChar(char toEncrypt);
+		std::string encryptString(std::string toEncrypt);
+	private:
+		int rotation;
+		const int MIN = 33;
+		const int MAX = 126;
+};
+
+#endif
diff --git a/main.cpp b/main.cpp
new file mode 100644
index 0000000..993a6af
--- /dev/null
+++ b/main.cpp
@@ -0,0 +1,25 @@
+#include <string>
+#include <iostream>
+#include "caesar.hpp"
+
+const std::string usage = "caesar <rotation> <text to encrypt>";
+
+int main(int argc, char* argv[]) {
+	if(argc < 3) { 
+		std::cout << usage << std::endl;
+		return 1;
+	}
+
+	int rotation = std::stoi(argv[1]);
+	std::string toEncrypt = "";
+
+	for(int i = 2; i < argc; i++) {
+		toEncrypt += argv[i];
+		if(i < argc - 1) toEncrypt += " ";
+	}
+
+	Caesar caesar{rotation};
+	std::cout << caesar.encryptString(toEncrypt) << std::endl;
+	
+	return 0;
+}
diff --git a/makefile b/makefile
new file mode 100644
index 0000000..335064b
--- /dev/null
+++ b/makefile
@@ -0,0 +1,21 @@
+
+CXX = g++
+
+CXXFLAGS = -std=c++11 -Wall
+
+TARGET = caesar
+
+SRCS = main.cpp caesar.cpp
+
+OBJS = $(SRCS:.cpp=.o)
+
+$(TARGET): $(OBJS)
+	$(CXX) $(CXXFLAGS) $(OBJS) -o $(TARGET)
+
+%.o: %.cpp
+	$(CXX) $(CXXFLAGS) -c $< -o $@
+
+clean:
+	rm -f $(OBJS) $(TARGET)
+
+.PHONY: clean