「🎉」 init: hello world !

ex00/Makefile

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+SHELL = bash
+
+NAME = ScalarConverter
+
+CC = c++
+
+OBJSDIR = obj/
+
+SRCS = $(shell find . -name '*.cpp')
+
+OBJS = $(addprefix $(OBJSDIR), $(SRCS:.cpp=.o))
+
+FLAGS = -Wall -Werror -Wextra -std=c++98 -MMD -MP
+
+RED = \033[0;31m
+GREEN = \033[0;32m
+YELLOW = \033[1;33m
+PURPLE = \e[0;35m
+NC = \033[0m
+DELETE = \x1B[2K\r
+
+all: $(NAME)
+
+$(NAME): $(OBJS)
+	@$(CC) $(FLAGS) -I . $(OBJS) -o $(NAME)
+	@printf "$(YELLOW)「✨」($(NAME)) Program compiled\n"
+
+$(OBJSDIR)%.o: %.cpp
+	@mkdir -p $(@D)
+	@$(CC) $(FLAGS) -I . -c $< -o $@
+	@printf "$(DELETE)$(GREEN)「🔨」($<) Object compiled\n"
+
+clean:
+	@rm -f $(OBJS)
+	@printf "$(DELETE)$(RED)「🗑️」($(OBJS)) Object deleted\n"
+
+fclean: clean
+	@rm -f $(NAME)
+	@rm -Rf $(OBJSDIR)
+	@printf "$(RED)「🗑️」($(NAME)) Program deleted\n"
+
+re: fclean
+	@$(MAKE) -s all
+
+.PHONY: clean fclean all re

ex00/PrintValue.hpp

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+#pragma once
+
+#include "ScalarConverter.hpp"
+
+void _printChar(const std::string &s)
+{
+	std::cout << "char: ";
+	if (!std::isprint(s[0]))
+		std::cout << "Non displayable" << std::endl;
+	else
+		std::cout << "'" << static_cast<char>(s[0]) << "'" << std::endl;
+
+	std::cout << "int: " << static_cast<int>(s[0]) << std::endl;
+	std::cout << "float: " << std::fixed << static_cast<float>(s[0]) << "f" << std::endl;
+	std::cout << "double: " << std::fixed << static_cast<double>(s[0]) << std::endl;
+}
+
+void _printInt(const std::string &s)
+{
+	long int nb = std::strtol(s.c_str(), NULL, 10);
+
+	std::cout << "char: ";
+	if (nb < std::numeric_limits<char>::min() ||
+		nb > std::numeric_limits<char>::max())
+		std::cout << "impossible" << std::endl;
+	else if (!std::isprint(nb))
+		std::cout << "Non displayable" << std::endl;
+	else
+		std::cout << "'" << static_cast<char>(nb) << "'" << std::endl;
+
+	std::cout << "int: ";
+	if (nb < std::numeric_limits<int>::min() ||
+		nb > std::numeric_limits<int>::max())
+		std::cout << "impossible" << std::endl;
+	else
+		std::cout << static_cast<int>(nb) << std::endl;
+
+	std::cout << "float: " << std::fixed << static_cast<float>(nb) << "f" << std::endl;
+	std::cout << "double: " << std::fixed << static_cast<double>(nb) << std::endl;
+}
+
+void _printFloat(const std::string &s)
+{
+	long int nb = std::strtod(s.c_str(), NULL);
+
+	std::cout << "char: ";
+	if (nb < std::numeric_limits<char>::min() ||
+		nb > std::numeric_limits<char>::max())
+		std::cout << "impossible" << std::endl;
+	else if (!std::isprint(nb))
+		std::cout << "Non displayable" << std::endl;
+	else
+		std::cout << "'" << static_cast<char>(nb) << "'" << std::endl;
+
+	std::cout << "int: ";
+	if (nb < std::numeric_limits<int>::min() ||
+		nb > std::numeric_limits<int>::max())
+		std::cout << "impossible" << std::endl;
+	else
+		std::cout << static_cast<int>(nb) << std::endl;
+
+	std::cout << "float: ";
+	if (nb < std::numeric_limits<float>::min() ||
+		nb > std::numeric_limits<float>::max())
+		std::cout << "impossible" << std::endl;
+	else
+		std::cout << std::fixed << static_cast<float>(nb) << "f" << std::endl;
+	std::cout << "double: " << std::fixed << static_cast<double>(nb) << std::endl;
+}
+
+void _printDouble(const std::string &s)
+{
+	long int nb = std::strtod(s.c_str(), NULL);
+
+	std::cout << "char: ";
+	if (nb < std::numeric_limits<char>::min() ||
+		nb > std::numeric_limits<char>::max())
+		std::cout << "impossible" << std::endl;
+	else if (!std::isprint(nb))
+		std::cout << "Non displayable" << std::endl;
+	else
+		std::cout << "'" << static_cast<char>(nb) << "'" << std::endl;
+
+	std::cout << "int: ";
+	if (nb < std::numeric_limits<int>::min() ||
+		nb > std::numeric_limits<int>::max())
+		std::cout << "impossible" << std::endl;
+	else
+		std::cout << static_cast<int>(nb) << std::endl;
+
+	std::cout << "float: ";
+	if (nb < std::numeric_limits<float>::min() ||
+		nb > std::numeric_limits<float>::max())
+		std::cout << "impossible" << std::endl;
+	else
+		std::cout << std::fixed << static_cast<float>(nb) << "f" << std::endl;
+	std::cout << "double: " << std::fixed << static_cast<double>(nb) << std::endl;
+}
+
+void _printNan(const std::string &s)
+{
+	std::string input = s;
+	if (input == "inf" || input == "inff")
+		input = "+inf";
+	if (input == "nan" || input == "-inf"  || input == "+inf")
+	{
+		std::cout << "char: impossible\n";
+		std::cout << "int: impossible\n";
+		std::cout << "float: " << input << "f" << std::endl;
+		std::cout << "double: " << input << std::endl;
+		return;
+	}
+	if (input == "nanf" || input == "-inff" || input == "+inff")
+	{
+		std::cout << "char: impossible\n";
+		std::cout << "int: impossible\n";
+		std::cout << "float: " << input << std::endl;
+		std::cout << "double: ";
+		if (input == "nanf")
+			std::cout << "nan";
+		else if (input == "-inff")
+			std::cout << "-inf";
+		else
+			std::cout << "+inf";
+		std::cout << std::endl;
+	}
+}
+

ex00/ScalarConverter.cpp

@@ -0,0 +1,71 @@
+#include "ScalarConverter.hpp"
+#include "PrintValue.hpp"
+
+ScalarConverter::ScalarConverter(void) {
+}
+
+ScalarConverter::ScalarConverter(const ScalarConverter &cpy) {
+	if (this != &cpy) {
+		*this = cpy;
+	}
+}
+
+ScalarConverter::~ScalarConverter(void) {
+}
+
+ScalarConverter &ScalarConverter::operator=(const ScalarConverter &) {
+	return *this;
+}
+
+bool _isNan(const std::string &str) {
+	if (str == "nan" || str == "nanf" || str == "-inf" || str == "-inff" ||
+		str == "+inf" || str == "+inff" || str == "inf" || str == "inff")
+		return true;
+	return false;
+}
+
+e_type	_getType(const std::string &s)
+{
+	if (_isNan(s))
+		return NAN;
+
+	if (s.length() == 1 && !isdigit(s[0]))
+		return CHAR;
+
+	char *err;
+
+	(void)strtol(s.c_str(), &err, 10);
+	if (*err == 0)
+		return INT;
+	(void)strtod(s.c_str(), &err);
+	if (*err == 0)
+		return DOUBLE;
+	if (*err == 'f' && *(err + 1) == 0)
+		return FLOAT;
+	return NONE;
+
+}
+
+void ScalarConverter::convert(const std::string &s)
+{
+	switch (_getType(s))
+	{
+		case CHAR:
+			_printChar(s);
+			break;
+		case INT:
+			_printInt(s);
+			break;
+		case FLOAT:
+			_printFloat(s);
+			break;
+		case DOUBLE:
+			_printDouble(s);
+			break;
+		case NAN:
+			_printNan(s);
+			break;
+		default:
+			std::cerr << "'" << s << "' does not convert to any of the availables types" << std::endl;
+	}
+}

ex00/ScalarConverter.hpp

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+#pragma once
+
+#include <string>
+#include <cctype>
+#include <iostream>
+#include <limits>
+#include <sstream>
+#include <cstdlib>
+
+enum e_type {
+	CHAR,
+	INT,
+	FLOAT,
+	DOUBLE,
+	NAN,
+	NONE
+};
+
+class ScalarConverter {
+  public:
+	static void convert(const std::string &);
+
+  private:
+	ScalarConverter(void);
+	ScalarConverter(const ScalarConverter &);
+	~ScalarConverter(void);
+
+	ScalarConverter			  &operator=(const ScalarConverter &);
+};

ex00/main.cpp

@@ -0,0 +1,10 @@
+#include "ScalarConverter.hpp"
+#include <iostream>
+
+int main(int ac, char **av) {
+	if (ac < 2) {
+		std::cout << "needs an input ! D:" << std::endl;
+		return 1;
+	}
+	ScalarConverter::convert(av[1]);
+}