2 * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
34 static void gm_parse_selector(char *, struct gm_selector *);
36 static int gm_parse(struct parser *, const char *, size_t);
37 static int gm_foreach_line(struct parser *, const char *, size_t);
38 static int gm_free(struct parser *);
41 gophermap_initparser(struct parser *p)
43 memset(p, 0, sizeof(*p));
45 p->name = "gophermap";
53 gm_parse_selector(char *line, struct gm_selector *s)
61 if ((line = strchr(line, '\t')) == NULL)
66 if ((line = strchr(line, '\t')) == NULL)
71 if ((line = strchr(line, '\t')) == NULL)
78 gm_parse(struct parser *p, const char *buf, size_t size)
80 return parser_foreach_line(p, buf, size, gm_foreach_line);
84 emit_line(struct parser *p, enum line_type type, struct gm_selector *s)
87 char buf[LINE_MAX], b[2] = {0};
89 if ((l = calloc(1, sizeof(*l))) == NULL)
92 if ((l->line = strdup(s->ds)) == NULL)
95 switch (l->type = type) {
97 if (s->type == 'h' && has_prefix(s->selector, "URL:")) {
98 strlcpy(buf, s->selector+4, sizeof(buf));
100 strlcpy(buf, "gopher://", sizeof(buf));
101 strlcat(buf, s->addr, sizeof(buf));
102 strlcat(buf, ":", sizeof(buf));
103 strlcat(buf, s->port, sizeof(buf));
104 strlcat(buf, "/", sizeof(buf));
106 strlcat(buf, b, sizeof(buf));
107 if (*s->selector != '/')
108 strlcat(buf, "/", sizeof(buf));
109 strlcat(buf, s->selector, sizeof(buf));
112 if ((l->alt = strdup(buf)) == NULL)
120 TAILQ_INSERT_TAIL(&p->head, l, lines);
134 gm_foreach_line(struct parser *p, const char *line, size_t linelen)
136 char buf[LINE_MAX] = {0};
137 struct gm_selector s = {0};
139 memcpy(buf, line, MIN(sizeof(buf)-1, linelen));
140 gm_parse_selector(buf, &s);
143 case '0': /* text file */
144 case '1': /* gopher submenu */
145 case '2': /* CCSO nameserver */
146 case '4': /* binhex-encoded file */
147 case '5': /* DOS file */
148 case '6': /* uuencoded file */
149 case '7': /* full-text search */
150 case '8': /* telnet */
151 case '9': /* binary file */
152 case '+': /* mirror or alternate server */
154 case 'I': /* image */
155 case 'T': /* telnet 3270 */
156 case ':': /* gopher+: bitmap image */
157 case ';': /* gopher+: movie file */
158 case 'd': /* non-canonical: doc */
159 case 'h': /* non-canonical: html file */
160 case 's': /* non-canonical: sound file */
161 if (!emit_line(p, LINE_LINK, &s))
167 case 'i': /* non-canonical: message */
168 if (!emit_line(p, LINE_TEXT, &s))
172 case '3': /* error code */
173 if (!emit_line(p, LINE_QUOTE, &s))
182 gm_free(struct parser *p)
184 /* flush the buffer */
186 gm_foreach_line(p, p->buf, p->len);