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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* parse.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: cacharle <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2019/11/15 09:29:21 by cacharle #+# #+# */
/* Updated: 2020/02/04 02:28:12 by cacharle ### ########.fr */
/* */
/* ************************************************************************** */
#include "cub3d.h"
t_state *parse(char *filename)
{
int i;
char **lines;
t_state *state;
if ((state = state_new_empty()) == NULL)
return (error_put_return("create empty state"));
if ((lines = get_file_lines(filename)) == NULL)
return (error_put_return_state_destroy("read .cub file", state));
i = -1;
while (lines[++i] != NULL)
{
if (*lines[i] == '1')
break ;
if (!parse_line(state, lines[i]))
return (error_put_return_lines_state_destroy(
"parse configuration", state, lines));
}
if ((state = parse_map(state, lines + i)) == NULL)
{
return (error_put_return_lines_state_destroy("parse map",
state, lines));
}
helper_free_splited(lines);
return (state);
}
char **get_file_lines(char *filename)
{
int fd;
int ret;
char buf[CUB3D_BUFFER_SIZE + 1];
char *file;
if ((fd = open(filename, O_RDONLY)) < 0)
return (NULL);
if ((file = ft_strdup("")) == NULL)
return (NULL);
while ((ret = read(fd, buf, CUB3D_BUFFER_SIZE)) > 0)
{
buf[ret] = '\0';
if ((file = ft_strjoin(file, buf)) == NULL)
return (NULL);
}
if (ret == -1)
return (NULL);
close(fd);
return (ft_split(file, '\n'));
}
static t_option_parser g_option_parsers[] =
{
{"R", parse_resolution},
{"NO", parse_north_texture},
{"SO", parse_south_texture},
{"WE", parse_west_texture},
{"EA", parse_east_texture},
{"S", parse_sprite_texture},
{"F", parse_floor_color},
{"C", parse_ceilling_color}
};
t_bool parse_line(t_state *state, char *line)
{
int i;
if (!*line)
return (TRUE);
i = -1;
while (++i < (int)(sizeof(g_option_parsers) / sizeof(t_option_parser)))
{
if (ft_strncmp(g_option_parsers[i].id, line,
ft_strlen(g_option_parsers[i].id)) == 0)
return (g_option_parsers[i].func(
state, line + ft_strlen(g_option_parsers[i].id) + 1));
}
return (FALSE);
}
t_state *parse_map(t_state *state, char **lines)
{
int i;
i = -1;
while (lines[++i] != NULL)
if (*lines[i] != '1')
return (NULL);
state->map_height = i;
if ((state->map = (t_map)malloc(sizeof(t_cell*) * i)) == NULL)
return (NULL);
state->map_width = ft_strcount(*lines, '1');
i = -1;
while (lines[++i] != NULL)
if ((state->map[i] = create_map_row(lines[i])) == NULL)
return (NULL);
return (state);
}
t_cell *create_map_row(char *line)
{
int i;
t_cell *row;
if ((row = (t_cell*)malloc(sizeof(t_cell) * ft_strlen(line))) == NULL)
return (NULL);
i = 0;
while (*line)
{
if (*line == '0' || *line == '1' || *line == '2')
row[i++] = *line - '0';
else if (*line == 'N')
row[i++] = CELL_LOOK_NORTH;
else if (*line == 'S')
row[i++] = CELL_LOOK_SOUTH;
else if (*line == 'W')
row[i++] = CELL_LOOK_WEST;
else if (*line == 'E')
row[i++] = CELL_LOOK_EAST;
else
{
free(row);
return (NULL);
}
line++;
while (*line == ' ')
line++;
}
return (row);
}
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