ft_printf/libftprintf/ft_vprintf_decimal.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_vprintf_decimal.c                               :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: gbaconni@student.42lausanne.ch             +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/01/20 11:55:02 by gbaconni          #+#    #+#             */
/*   Updated: 2022/04/29 09:09:08 by gbaconni         ###   lausanne.ch       */
/*                                                                            */
/* ************************************************************************** */

#include "libftprintf.h"

int	ft_vprintf_decimal(const char *format, va_list ap)
{
	int					ret;
	unsigned int		u;
	int					d;
	char				*s;
	char				c;

	ret = 0;
	c = *(format + ft_eoflags(format));
	if (c == 'u')
	{
		u = va_arg(ap, unsigned int);
		s = ft_ltoa_base((long) u, "0123456789");
	}
	else
	{
		d = va_arg(ap, int);
		s = ft_itoa(d);
	}

	const char	*f;
	int			flags;
	int			precision;
	int			len;
	precision = 0;
	flags = ft_vprintf_flags_bonus(format, ap);
	f = format;
	while (*f != '\0')
	{
		if (ft_isdigit(*f))
			precision = precision * 10 + *f - '0';
		if (ft_strchr(SPECIFIERS, *f) != NULL)
			break ;
		f++;
	}
	len = 0;
	if (precision > 0)
	{
		len = precision - ft_strlen(s);
		while (len-- > 0)
		{
			if (flags & F_ZERO)
				ret += ft_putchar('0');
			else
				ret += ft_putchar(' ');
		}
	}

	ret += ft_puts(s);
	free(s);
	return (ret);
}