124 lines
2.9 KiB
C
124 lines
2.9 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* parsing.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: apago <apago@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2023/04/04 16:19:27 by apago #+# #+# */
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/* Updated: 2023/04/04 18:26:39 by apago ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "parsing.h"
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int parse_meta(char *str, t_meta *meta)
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{
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int read_bytes;
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read_bytes = read_uint(str);
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meta->height = parse_valid_uint(str, read_bytes);
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if (meta->height < 1)
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return (0);
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if (!read_char(&str[read_bytes++], &meta->empty))
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return (0);
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if (!read_char(&str[read_bytes++], &meta->obstacle))
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return (0);
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if (!read_char(&str[read_bytes++], &meta->full))
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return (0);
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if (!printable(meta->empty) || !printable(meta->obstacle)
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|| !printable(meta->full))
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return (0);
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if ((meta->empty == meta->obstacle) || (meta->obstacle == meta->full))
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return (0);
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if (str[read_bytes++] != '\n')
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return (0);
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return (read_bytes);
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}
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size_t parse_line(char *line, char *dst, t_meta *meta)
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{
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int i;
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i = 0;
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while (i < meta->width)
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{
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if (!line[i])
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return (0);
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if (line[i] == meta->empty)
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dst[i] = '.';
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else if (line[i] == meta->obstacle)
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dst[i] = 'o';
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else
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return (0);
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i++;
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}
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if (line[i] != '\n')
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return (0);
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return (meta->width + 1);
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}
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char *parse_data(char *data, t_meta *meta)
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{
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char *res;
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size_t offset;
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size_t read_bytes;
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int i;
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i = 0;
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res = malloc(meta->width * meta->height * sizeof(char));
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if (!res)
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return (0);
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while (i < meta->height)
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{
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read_bytes = parse_line(data, res, meta);
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if (!read_bytes)
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{
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free(res);
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return (0);
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}
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data += read_bytes;
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i++;
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}
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if (!*data)
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return (res);
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free(res);
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return (0);
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}
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int parse_input(char *str, t_map *map)
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{
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size_t offset;
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size_t read_bytes;
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read_bytes = parse_meta(str, &map->meta);
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if (!read_bytes)
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return (0);
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offset = read_bytes;
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map->meta.width = count_first_line(&str[offset]);
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if (!map->meta.width)
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return (0);
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map->data = parse_data(&str[offset], &map->meta);
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if (!map->data)
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return (0);
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return (1);
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}
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int read_fname(char *name, t_map *map)
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{
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int file;
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char *text;
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int res;
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file = open(name, O_RDONLY);
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if (file == -1)
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return (0);
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text = read_file(file);
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close(file);
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if (!text)
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return (0);
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res = parse_input(text, map);
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free(text);
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return (res);
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}
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