ft_printf/ft_flags.c at main · mcombeau/ft_printf · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_flags.c                                         :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: mcombeau <mcombeau@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/12/16 15:57:31 by mcombeau          #+#    #+#             */
/*   Updated: 2021/12/17 16:21:21 by mcombeau         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "ft_printf.h"

t_flags	ft_flags_init(void)
{
	t_flags	flags;

	flags.spec = 0;
	flags.width = 0;
	flags.left = 0;
	flags.zero = 0;
	flags.star = 0;
	flags.precision = -1;
	flags.hash = 0;
	flags.space = 0;
	flags.plus = 0;
	return (flags);
}

t_flags	ft_flag_left(t_flags flags)
{
	flags.left = 1;
	flags.zero = 0;
	return (flags);
}

t_flags	ft_flag_digit(char c, t_flags flags)
{
	if (flags.star == 1)
		flags.width = 0;
	flags.width = (flags.width * 10) + (c - '0');
	return (flags);
}

t_flags	ft_flag_width(va_list args, t_flags flags)
{
	flags.star = 1;
	flags.width = va_arg(args, int);
	if (flags.width < 0)
	{
		flags.left = 1;
		flags.width *= -1;
	}
	return (flags);
}

int	ft_flag_precision(const char *str, int pos, va_list args, t_flags *flags)
{
	int	i;

	i = pos + 1;
	if (str[i] == '*')
	{
		flags->precision = va_arg(args, int);
		return (i++);
	}
	flags->precision = 0;
	while (ft_isdigit(str[i]))
	{
		flags->precision = (flags->precision * 10) + (str[i] - '0');
		i++;
	}
	return (i);
}