parse_opt.c

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   parse_opt.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: kfujita <kfujita@student.42tokyo.jp>       +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/04/23 01:27:16 by kfujita           #+#    #+#             */
/*   Updated: 2022/04/26 00:23:37 by kfujita          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include "ft_printf_local.h"
#include "../ft_mem/ft_mem.h"
#include "../ft_math/ft_math.h"
 
t_fmt   *parse_opt(size_t *len, char **fmt, va_list *args)
{
    t_fmt   *p_ret;
 
    *fmt += 1;
    if (!is_valid_conv_char(**fmt)
        && !is_valid_flag_char(**fmt))
        return (check_no_opt_str(len, fmt, NULL));
    p_ret = ft_calloc(1, sizeof(t_fmt));
    if (p_ret == NULL)
        return (p_ret);
    while (is_valid_flag_char(**fmt))
        parse_opt_flags(fmt, p_ret);
    if (!(parse_opt_c_str(**fmt, args, p_ret)
            || parse_opt_num(**fmt, args, p_ret)
            || parse_opt_ptr(**fmt, args, p_ret)))
        return (check_no_opt_str(len, fmt, p_ret));
    *fmt += 1;
    *len += ft_max(p_ret->min_len, p_ret->str_len + p_ret->head_len);
    return (p_ret);
}