/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_itoa.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: kcolin <marvin@42.fr>                      +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/10/17 17:08:01 by kcolin            #+#    #+#             */
/*   Updated: 2024/10/17 17:33:18 by kcolin           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"
#include <stdlib.h>

static int	nb_needed_chars(long num)
{
	int	count;

	count = 0;
	if (num <= 0)
	{
		count++;
		num = -num;
	}
	while (num != 0)
	{
		count++;
		num /= 10;
	}
	return (count);
}

char	*ft_itoa(int n)
{
	long	num;
	size_t	idx;
	char	*out;

	num = n;
	idx = nb_needed_chars(num);
	if (num < 0)
		num = -num;
	out = malloc(idx + 1);
	if (out == NULL)
		return (NULL);
	out[idx--] = '\0';
	while (num > 0)
	{
		out[idx--] = (num % 10) + '0';
		num /= 10;
	}
	if (n < 0)
		out[idx] = '-';
	if (n == 0)
		out[idx] = '0';
	return (out);
}

/*
#include <stdio.h>
#include <limits.h>

int	main(void)
{
	printf("%s\n", ft_itoa(0));
	printf("%s\n", ft_itoa(42));
	printf("%s\n", ft_itoa(-42));
	printf("%s\n", ft_itoa(INT_MAX));
	printf("%s\n", ft_itoa(INT_MIN));
	return (0);
}
*/