ft_printf/ft_print_ptr.c at main · vittoric/ft_printf · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_print_ptr.c                                     :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: vcodrean <vcodrean@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/12/28 10:56:22 by vcodrean          #+#    #+#             */
/*   Updated: 2022/12/28 11:11:40 by vcodrean         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "ft_printf.h"

void	ft_putchar_fd(char c, int fd);

int	ft_ptr_len(uintptr_t num)
{
	int	len;

	len = 0;
	while (num != 0)
	{
		len++;
		num = num / 16;
	}
	return (len);
}

void	ft_put_ptr(uintptr_t num)
{
	if (num >= 16)
	{
		ft_put_ptr(num / 16);
		ft_put_ptr(num % 16);
	}
	else
	{
		if (num <= 9)
			ft_putchar_fd((num + '0'), 1);
		else
			ft_putchar_fd((num - 10 + 'a'), 1);
	}
}

int	ft_print_ptr(uintptr_t ptr)
{
	int	lenght;

	lenght = 0;
	lenght += write(1, "0x", 2);
	if (ptr == 0)
		lenght += write(1, "0", 1);
	else
	{
		ft_put_ptr(ptr);
		lenght += ft_ptr_len(ptr);
	}
	return (lenght);
}