/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_printf_hexa.c                                   :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: jguelen <jguelen@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/11/18 10:39:10 by jguelen           #+#    #+#             */
/*   Updated: 2025/02/04 09:52:40 by jguelen          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "ft_printf.h"

/*Presumes base 10 or higher*/
int	ft_put_ull_base_fd(unsigned long long n, char *base, int base_size, int fd)
{
	unsigned long long	calc;
	char				buf[20];
	int					i;

	if (n == 0)
		return (write(fd, "0", 1));
	calc = n;
	i = 19;
	while (calc != 0)
	{
		buf[i--] = base[calc % base_size];
		calc /= base_size;
	}
	return (write(fd, buf + i + 1, 19 - i));
}

static int	ft_printf_hexa2(int fd, t_printf_format *format)
{
	if (ft_printf_str(fd, format->prefix, INT_MAX) == -1
		|| (format->specifier == PRINTF_HEXA_UPSPEC
			&& ft_put_ull_base_fd((unsigned long long)format->var.u,
				HEXA_UP, HEX_LEN, fd) == -1))
		return (-1);
	else if (format->specifier == PRINTF_HEXA_LOWSPEC
		&& ft_put_ull_base_fd((unsigned long long)format->var.u,
			HEXA_LOW, HEX_LEN, fd) == -1)
		return (-1);
	return (ft_pad_char(fd, format, " "));
}

int	ft_printf_hexa(int fd, t_printf_format *format)
{
	int					i;
	unsigned long long	calc;

	calc = (unsigned long long)format->var.u;
	i = ft_uint_len(calc, HEX_LEN);
	if ((format->flags & PRINTF_DOTFLAG) && (format->precision == 0)
		&& (format->var.u == 0))
		format->total_len = 0;
	if ((format->flags & ~PRINTF_MINUSFLAG) == format->flags)
	{
		if ((format->flags & ~PRINTF_ZEROFLAG) == format->flags
			&& ft_pad_char(fd, format, " ") == -1)
			return (-1);
		else if (ft_pad_char(fd, format, "0") == -1)
			return (-1);
	}
	while (i++ < format->precision)
		if (write(fd, "0", 1) == -1)
			return (-1);
	if ((format->flags & PRINTF_DOTFLAG) && (format->precision == 0)
		&& (format->var.u == 0))
		return (ft_pad_char(fd, format, " "));
	return (ft_printf_hexa2(fd, format));
}