ft_printf/printf.c at main · ReoKenChin/ft_printf · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   printf.c                                           :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: mcherki <marvin@42.fr>                     +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/03/13 20:45:00 by mcherki           #+#    #+#             */
/*   Updated: 2022/03/13 20:46:01 by mcherki          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "ft_printf.h"

int	format(va_list ap, char c)
{
	int	len;

	len = 0;
	if (c == 'd' || c == 'i')
		len += ft_putnbr(va_arg(ap, int));
	else if (c == 'c')
		len += ft_putchar(va_arg(ap, int));
	else if (c == 's')
		len += ft_putstr(va_arg(ap, char *));
	else if (c == 'x')
		len += ft_putlhex(va_arg(ap, unsigned long));
	else if (c == 'X')
		len += ft_putuhex(va_arg(ap, unsigned int));
	else if (c == 'p')
	{
		len += ft_putstr("0x");
		len += ft_putlhex(va_arg(ap, unsigned long));
	}
	else if (c == 'u')
		len += ft_putdmc(va_arg(ap, unsigned int));
	else if (c == '%')
		len += ft_putchar('%');
	else
		len += ft_putchar(c);
	return (len);
}

int	ft_printf(const char *str, ...)
{
	int	len;

	len = 0;
	va_list(ap);
	va_start(ap, str);
	while (*str)
	{
		if (*str == '%')
		{
			str++;
			len += format(ap, *str);
		}
		else
			len += ft_putchar(*str);
		str++;
	}
	va_end(ap);
	return (len);
}