ft_printf/modifiers.c at master · StToupin/ft_printf · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   modifiers.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: stoupin <marvin@42.fr>                     +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2017/04/24 13:53:21 by stoupin           #+#    #+#             */
/*   Updated: 2017/04/24 14:05:52 by stoupin          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "ft_printf.h"

long long int			read_int(va_list *ap, int modifiers)
{
	long long int number;

	if ((modifiers & (MOD_LL | MOD_J)) != 0)
		number = (long long int)va_arg(*ap, long long int);
	else if ((modifiers & (MOD_L | MOD_Z)) != 0)
		number = (long long int)va_arg(*ap, long int);
	else if ((modifiers & MOD_HH) != 0)
		number = (char)va_arg(*ap, int);
	else if ((modifiers & MOD_H) != 0)
		number = (short)va_arg(*ap, int);
	else
		number = (long long int)va_arg(*ap, int);
	return (number);
}

unsigned long long int	read_uint(va_list *ap, int modifiers)
{
	long long int number;

	if ((modifiers & (MOD_LL | MOD_J)) != 0)
		number = (unsigned long long int)va_arg(*ap, unsigned long long int);
	else if ((modifiers & (MOD_L | MOD_Z)) != 0)
		number = (unsigned long long int)va_arg(*ap, unsigned long int);
	else if ((modifiers & MOD_HH) != 0)
		number = (unsigned char)va_arg(*ap, unsigned int);
	else if ((modifiers & MOD_H) != 0)
		number = (unsigned short)va_arg(*ap, unsigned int);
	else
		number = (unsigned long long int)va_arg(*ap, unsigned int);
	return (number);
}

int						parse_modifier(char c, char c_next, int *modifiers)
{
	int is_ll;
	int is_hh;

	is_ll = (c == 'l' && c_next == 'l');
	is_hh = (c == 'h' && c_next == 'h');
	if (c == 'l')
		*modifiers |= MOD_L * !is_ll + MOD_LL * is_ll;
	else if (c == 'h')
		*modifiers |= MOD_H * !is_hh + MOD_HH * is_hh;
	else if (c == 'j')
		*modifiers |= MOD_J;
	else if (c == 'z')
		*modifiers |= MOD_Z;
	else
		return (0);
	return (1 + (is_ll || is_hh));
}

void					parse_flags(const char *format, int *i, int *flags)
{
	char	c;

	while (1)
	{
		c = format[*i];
		if (c == '0')
			*flags |= FLAG_ZERO;
		else if (c == '-')
			*flags |= FLAG_MINUS;
		else if (c == '#')
			*flags |= FLAG_SHARP;
		else if (c == '+')
			*flags |= FLAG_PLUS;
		else if (c == ' ')
			*flags |= FLAG_SPACE;
		else
			return ;
		(*i)++;
	}
	return ;
}

void					parse_width(const char *format, int *i, t_par *p,
									va_list *ap)
{
	p->width1 = 0;
	p->width2 = -1;
	while (ft_isdigit(format[*i]))
		p->width1 = p->width1 * 10 + format[(*i)++] - '0';
	if (format[*i] == '*')
	{
		p->width1 = (int)va_arg(*ap, int) + 0 * (*i)++;
		if (p->width1 < 0)
			p->width1 = -p->width1 + 0 * (p->flags |= FLAG_MINUS);
	}
	if (ft_isdigit(format[*i]))
	{
		p->width1 = 0;
		while (ft_isdigit(format[*i]))
			p->width1 = p->width1 * 10 + format[(*i)++] - '0';
	}
	if (format[*i] == '.')
	{
		p->width2 = 0 + 0 * (*i)++;
		if (format[*i] == '*')
			p->width2 = (int)va_arg(*ap, int) + 0 * (*i)++;
		else
			while (ft_isdigit(format[*i]))
				p->width2 = p->width2 * 10 + format[(*i)++] - '0';
	}
}