42_cube3D/map/parsing_header.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   parsing_header.c                                   :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: cchauvet <cchauvet@student.42angouleme.fr  +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/05/16 16:28:10 by cchauvet          #+#    #+#             */
/*   Updated: 2023/05/16 16:54:16 by cchauvet         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "./parsing_private.h"
#include <sys/types.h>

int	get_token(const char *key)
{
	if (ft_strcmp(key, "NO") == 0)
		return (1);
	if (ft_strcmp(key, "SO") == 0)
		return (3);
	if (ft_strcmp(key, "WE") == 0)
		return (2);
	if (ft_strcmp(key, "EA") == 0)
		return (4);
	if (ft_strcmp(key, "F") == 0)
		return (5);
	if (ft_strcmp(key, "C") == 0)
		return (6);
	return (0);
}

static int	is_header(const char *line)
{
	char	**list;

	list = ft_split(line, ' ');
	if (list == NULL)
	{
		ft_eprintf("malloc failed");
		ft_freer_tab_ultimate(1, list);
		return (0);
	}
	if (ft_tablen((const void **) list) != 2)
	{
		ft_freer_tab_ultimate(1, list);
		return (0);
	}
	if (get_token(list[0]) == 0)
	{
		ft_freer_tab_ultimate(1, list);
		return (0);
	}
	ft_freer_tab_ultimate(1, list);
	return (1);
}

static size_t	get_header_size(const char **file_content, size_t *header_size)
{
	ssize_t	i;
	size_t	len;

	len = 0;
	i = -1;
	while (file_content[++i] != NULL)
	{
		if (ft_contain_only(file_content[i], ' '))
			continue ;
		if (!is_header(file_content[i]))
			break ;
		len++;
	}
	*header_size = i;
	return (len);
}

char	***get_header(const char **file_content, size_t *header_size)
{
	char	***header;
	size_t	len;
	size_t	i;
	ssize_t	y;

	len = get_header_size(file_content, header_size);
	header = malloc(sizeof(char *) * (len + 1));
	if (header == NULL)
		return (NULL);
	header[len] = NULL;
	y = -1;
	i = 0;
	while (++y < (ssize_t) len)
	{
		while (ft_contain_only(file_content[i], ' '))
			i++;
		header[y] = ft_split(file_content[i], ' ');
		if (header[y] == NULL)
		{
			ft_cancel((void **) header, y);
			return (NULL);
		}
		i++;
	}
	return (header);
}