parse_fc_utils.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   parse_fc_utils.c                                   :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: kamitsui <kamitsui@student.42tokyo.jp>     +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/11/16 18:17:19 by kamitsui          #+#    #+#             */
/*   Updated: 2024/12/18 03:04:12 by kamitsui         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include "cub3d.h"
 
static bool is_not_number(char *str)
{
    return (*str != '\0' && *str != ',');
}
 
static t_result atoi_0_to_255(char *str)
{
    int     result;
 
    result = 0;
    if (*str == ',')
        return ((t_result){.value = -1, .err_msg = NULL});
    while (*str != '\0' && ft_isdigit(*str) == true)
    {
        while (result == 0 && *str == '0' && *str != '\0')
            str++;
        if (*str == '\0')
            return ((t_result){.value = 0, .err_msg = NULL});
        if (*str == ',')
            str--;
        result = result * 10 + (*str - '0');
        if (result > 255)
            return ((t_result){.value = -2, .err_msg = NULL});
        str++;
    }
    if (is_not_number(str) == true)
        return ((t_result){.value = -3, .err_msg = str});
    return ((t_result){.value = result, .err_msg = NULL});
}
 
static int  check_error_atoi(t_result *result, const char *rgb_str, char *str)
{
    if (result->value >= 0)
        return (EXIT_SUCCESS);
    if (result->value == -1)
        result->err_msg = rgb_str;
    if (result->value == -2)
        result->err_msg = str;
    return (EXIT_FAILURE);
}
 
t_result    get_rgb_color(char *str)
{
    t_result            result[3];
    static const char   *rgb_str[3] = {"R", "G", "B"};
    t_type_rgb          type;
 
    type = ENUM_R;
    while (str != NULL && *str != '\0' && type <= ENUM_B)
    {
        result[type] = atoi_0_to_255(str);
        if (check_error_atoi(&result[type], rgb_str[type], str) != EXIT_SUCCESS)
            return (result[type]);
        type++;
        str = ft_strchr(str, ',');
        if (str == NULL)
            break ;
        str++;
        while (*str != '\0' && *str == ' ')
            str++;
    }
    if (type <= ENUM_B)
        return ((t_result){.value = -1, .err_msg = rgb_str[type]});
    if (str != NULL)
        return ((t_result){.value = -4, .err_msg = --str});
    return ((t_result){(result[0].value << 16) + (result[1].value << 8)
        + result[2].value, NULL});
}
    //debug_get_rgb_color(debug_fd, type, rgb, "get_rgb_color()");