ft_printf/ft_printf_utils.c at main · aymenmarjan/ft_printf · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_printf_utils.c                                  :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: amarjan <amarjan@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2026/01/18 12:09:10 by amarjan           #+#    #+#             */
/*   Updated: 2026/01/18 12:09:57 by amarjan          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "ft_printf.h"

int	ft_hex(unsigned long p, char *h)
{
	if (p < 16)
		return (write(1, h + p, 1));
	return (ft_hex(p / 16, h) + write (1, h + (p % 16), 1));
}

int	ft_ptr(void *ptr)
{
	unsigned long	p;

	if (!ptr)
		return (write(1, "(nil)", 5));
	p = (unsigned long)ptr;
	write(1, "0x", 2);
	return (ft_hex(p, "0123456789abcdef") + 2);
}

int	ft_unsigned(unsigned int n)
{
	if (n <= 9)
	{
		return (ft_putchar_fd(n + 48, 1));
	}
	return (ft_unsigned(n / 10) + ft_putchar_fd(n % 10 + 48, 1));
}

int	ft_conversions(char c, va_list ap)
{
	if (c == 'c')
		return (ft_putchar_fd((char)va_arg(ap, int), 1));
	else if (c == 's')
		return (ft_putstr_fd(va_arg(ap, char *), 1));
	else if (c == 'p')
		return (ft_ptr(va_arg(ap, void *)));
	else if (c == 'd')
		return (ft_putnbr_fd(va_arg(ap, int), 1));
	else if (c == 'i')
		return (ft_putnbr_fd(va_arg(ap, int), 1));
	else if (c == 'u')
		return (ft_unsigned(va_arg(ap, unsigned int)));
	else if (c == 'x')
		return (ft_hex(va_arg(ap, unsigned int), "0123456789abcdef"));
	else if (c == 'X')
		return (ft_hex(va_arg(ap, unsigned int), "0123456789ABCDEF"));
	else if (c == '%')
		return (ft_putchar_fd('%', 1));
	return (ft_putchar_fd('%', 1) + ft_putchar_fd(c, 1));
}