drawio generator

lib/libft/srcs/sprintf/ft_sprintf.c

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+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_sprintf.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: lderidde <lderidde@student.s19.be>        +#+  +:+       +#+         */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/01/24 13:46:45 by lderidde          #+#    #+#             */
+/*   Updated: 2025/01/24 13:46:45 by lderidde         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "ft_sprintf.h"
+
+static int	is_spec(char c)
+{
+	if (c == 'c' || c == 's' || c == 'd')
+		return (1);
+	return (0);
+}
+
+static char	*add_arg(char c, char *str, va_list args)
+{
+	char	*out;
+
+	if (c == 'c')
+		out = ft_strfjoinc(str, va_arg(args, int));
+	else if (c == 's')
+		out = ft_strfjoin(str, va_arg(args, char *));
+	else if (c == 'd')
+		out = ft_strfjoind(str, ft_itoa(va_arg(args, int)));
+	return (out);
+}
+
+static char	*build_str(const char *str, va_list args)
+{
+	char	*out;
+	int		i;
+
+	out = NULL;
+	i = 0;
+	while (str[i])
+	{
+		if (str[i] == '%' && str[i + 1])
+		{
+			if (is_spec(str[++i]))
+				out = add_arg(str[i], out, args);
+			else
+				out = ft_strfjoinc(out, '%');
+		}
+		else
+			out = ft_strfjoinc(out, str[i]);
+		i++;
+	}
+	return (out);
+}
+
+char	*ft_sprintf(const char *str, ...)
+{
+	va_list	args;
+	char	*out;
+
+	va_start(args, str);
+	out = build_str(str, args);
+	va_end(args);
+	return (out);
+}