1  /* ************************************************************************** */
  2  /*                                                                            */
  3  /*                                                        :::      ::::::::   */
  4  /*   read.c                                             :+:      :+:    :+:   */
  5  /*                                                    +:+ +:+         +:+     */
  6  /*   By: gychoi <gychoi@student.42seoul.kr>         +#+  +:+       +#+        */
  7  /*                                                +#+#+#+#+#+   +#+           */
  8  /*   Created: 2022/12/21 00:51:06 by gychoi            #+#    #+#             */
  9  /*   Updated: 2023/01/03 23:39:04 by gychoi           ###   ########.fr       */
 10  /*                                                                            */
 11  /* ************************************************************************** */
 12  
 13  #include "fdf.h"
 14  
 15  static t_coord	*get_coord(t_map *map, char *line, int index_y)
 16  {
 17  	char	**vars_x;
 18  	int		i;
 19  	int		var_z;
 20  	t_coord	*coord;
 21  
 22  	vars_x = ft_split(line, ' ');
 23  	coord = fdf_malloc(sizeof(t_coord) * map->width);
 24  	i = 0;
 25  	while (vars_x && vars_x[i])
 26  	{
 27  		var_z = ft_atoi(vars_x[i]);
 28  		coord[i] = init_coord(i - map->x_origin, \
 29  			index_y - map->y_origin, var_z);
 30  		if (var_z > map->z_max)
 31  			map->z_max = var_z;
 32  		if (var_z < map->z_min)
 33  			map->z_min = var_z;
 34  		free(vars_x[i++]);
 35  	}
 36  	free(vars_x);
 37  	return (coord);
 38  }
 39  
 40  static void	check_valid_file(char *path)
 41  {
 42  	int	i;
 43  
 44  	i = ft_strlen(path);
 45  	if (i < 5)
 46  		fdf_error("Error: Not a valid file ");
 47  	if (path[i - 1] != 'f' || path[i - 2] != 'd' \
 48  	|| path[i - 3] != 'f' || path [i - 4] != '.')
 49  		fdf_error("Error: Not a valid file ");
 50  }
 51  
 52  static int	count_width(char *line)
 53  {
 54  	int		count;
 55  	char	**vars_x;
 56  
 57  	vars_x = ft_split(line, ' ');
 58  	count = 0;
 59  	while (vars_x && vars_x[count])
 60  	{
 61  		free(vars_x[count]);
 62  		count++;
 63  	}
 64  	free(vars_x);
 65  	return (count);
 66  }
 67  
 68  static void	read_map_info(t_fdf *fdf, char *path)
 69  {
 70  	int		fd;
 71  	int		width;
 72  	int		height;
 73  	char	*read_line;
 74  
 75  	check_valid_file(path);
 76  	fd = fdf_open(path, O_RDONLY);
 77  	read_line = get_next_line(fd);
 78  	width = count_width(read_line);
 79  	height = 1;
 80  	while (1)
 81  	{
 82  		free(read_line);
 83  		read_line = get_next_line(fd);
 84  		if (read_line == NULL)
 85  			break ;
 86  		height++;
 87  	}
 88  	fdf->map.width = width;
 89  	fdf->map.height = height;
 90  	fdf_close(fd);
 91  }
 92  
 93  void	read_file(t_fdf *fdf, char *path)
 94  {
 95  	int		fd;
 96  	int		index_y;
 97  	char	*read_line;
 98  
 99  	read_map_info(fdf, path);
100  	fdf->map.x_origin = fdf->map.width / 2;
101  	fdf->map.y_origin = fdf->map.height / 2;
102  	fd = fdf_open(path, O_RDONLY);
103  	fdf->coords = fdf_malloc(sizeof(t_coord *) * fdf->map.height);
104  	index_y = 0;
105  	while (1)
106  	{
107  		read_line = get_next_line(fd);
108  		if (read_line == NULL)
109  			break ;
110  		fdf->coords[index_y] = get_coord(&fdf->map, read_line, index_y);
111  		index_y++;
112  		free(read_line);
113  	}
114  	set_coord_margin(fdf);
115  	fdf_close(fd);
116  }