ft_printf/libftprintf/ft_vprintf_string.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_vprintf_string.c                                :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: gbaconni@student.42lausanne.ch             +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/01/20 11:56:37 by gbaconni          #+#    #+#             */
/*   Updated: 2022/04/29 09:03:47 by gbaconni         ###   lausanne.ch       */
/*                                                                            */
/* ************************************************************************** */

#include "libftprintf.h"

int	ft_vprintf_string(const char *format, va_list ap)
{
	int			ret;
	char		*s;

	(void) format;
	ret = 0;
	s = va_arg(ap, char *);
	if (s == NULL)
	{
		ret = ft_puts("(null)");
		return (ret);
	}

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