42 - j02 - ex06

/* *************************************************************************** */
/*                                                                             */
/*                                                         :::      ::::::::   */
/*   ft_putnbr.c                                         :+:      :+:    :+:   */
/*                                                     +:+ +:+         +:+     */
/*   by: adhenain <ambroise.dhenain@gmail.com>       +#+  +:+       +#+        */
/*                                                 +#+#+#+#+#+   +#+           */
/*   Created: 2013/07/18 17:37:19 by adhenain           #+#    #+#             */
/*   Updated: 2013/07/18 19:08:13 by adhenain          ###   ########.fr       */
/*                                                                             */
/* *************************************************************************** */

int     ft_putchar(char c);

int     ft_get_int_size(int nb)
{
    int size;

    if (nb < 0)
    {
        nb = nb * -1;
    }
    size = nb > 0 ? 0 : 1;
    while (nb > 0)
    {
        nb /= 10;
        size++;
    }
    return size;
}

int     ft_get_first_char(int val, int size)
{
    int divider;
    int increment;

    if (val == 0)
    {
        return 0;
    }
    divider = 1;
    increment = 0;
    while (increment < size - 1)
    {
        divider *= 10;
        increment++;
    }
    return val / divider;
}

void    ft_manage_negative(int *nb)
{
    if (*nb == -2147483648)
    {
        ft_putchar('-');
        ft_putchar('2');
        ft_putchar('1');
        ft_putchar('4');
        ft_putchar('7');
        ft_putchar('4');
        ft_putchar('8');
        ft_putchar('3');
        ft_putchar('6');
        ft_putchar('4');
        *nb = 8;
    }
    if (*nb < 0)
    {
        *nb *= -1;
        ft_putchar('-');
    }
}

void    ft_putnbr(int nb)
{
    int size;
    int fake_char;
    int minus;
    int i;

    ft_manage_negative(&nb);
    size = ft_get_int_size(nb);
    while (size > 0)
    {
        fake_char = ft_get_first_char(nb, size);
        minus = fake_char;
        i = size - 1;
        while (i > 0)
        {
            minus *= 10;
            i--;
        }
        minus = minus == 0 ? size * fake_char : minus;
        nb -= minus;
        ft_putchar(48 + fake_char);
        size--;
    }
}