1 75a8a1ec 2022-02-08 op /*
 2 75a8a1ec 2022-02-08 op  * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
 3 75a8a1ec 2022-02-08 op  *
 4 75a8a1ec 2022-02-08 op  * Permission to use, copy, modify, and distribute this software for any
 5 75a8a1ec 2022-02-08 op  * purpose with or without fee is hereby granted, provided that the above
 6 75a8a1ec 2022-02-08 op  * copyright notice and this permission notice appear in all copies.
 7 75a8a1ec 2022-02-08 op  *
 8 75a8a1ec 2022-02-08 op  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 9 75a8a1ec 2022-02-08 op  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 75a8a1ec 2022-02-08 op  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 75a8a1ec 2022-02-08 op  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 75a8a1ec 2022-02-08 op  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 75a8a1ec 2022-02-08 op  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 75a8a1ec 2022-02-08 op  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 75a8a1ec 2022-02-08 op  */
16 75a8a1ec 2022-02-08 op 
17 75a8a1ec 2022-02-08 op /*
18 75a8a1ec 2022-02-08 op  * A streaming text/plain "parser."
19 75a8a1ec 2022-02-08 op  */
20 75a8a1ec 2022-02-08 op 
21 75a8a1ec 2022-02-08 op #include <stdlib.h>
22 75a8a1ec 2022-02-08 op #include <string.h>
23 75a8a1ec 2022-02-08 op 
24 75a8a1ec 2022-02-08 op #include "telescope.h"
25 75a8a1ec 2022-02-08 op #include "parser.h"
26 75a8a1ec 2022-02-08 op 
27 75a8a1ec 2022-02-08 op static int	textplain_parse(struct parser*, const char*, size_t);
28 75a8a1ec 2022-02-08 op static int	textplain_foreach_line(struct parser*, const char*, size_t);
29 75a8a1ec 2022-02-08 op static int	textplain_free(struct parser*);
30 75a8a1ec 2022-02-08 op 
31 75a8a1ec 2022-02-08 op static inline int
32 75a8a1ec 2022-02-08 op emit_line(struct parser *p, const char *line, size_t len)
33 75a8a1ec 2022-02-08 op {
34 75a8a1ec 2022-02-08 op 	struct line *l;
35 75a8a1ec 2022-02-08 op 
36 75a8a1ec 2022-02-08 op 	if ((l = calloc(1, sizeof(*l))) == NULL)
37 75a8a1ec 2022-02-08 op 		return 0;
38 75a8a1ec 2022-02-08 op 
39 75a8a1ec 2022-02-08 op 	l->type = LINE_TEXT;
40 75a8a1ec 2022-02-08 op 
41 75a8a1ec 2022-02-08 op 	if (len != 0) {
42 75a8a1ec 2022-02-08 op 		if ((l->line = calloc(1, len+1)) == NULL) {
43 75a8a1ec 2022-02-08 op 			free(l);
44 75a8a1ec 2022-02-08 op 			return 0;
45 75a8a1ec 2022-02-08 op 		}
46 75a8a1ec 2022-02-08 op 
47 75a8a1ec 2022-02-08 op 		memcpy(l->line, line, len);
48 75a8a1ec 2022-02-08 op 	}
49 75a8a1ec 2022-02-08 op 
50 75a8a1ec 2022-02-08 op 	TAILQ_INSERT_TAIL(&p->head, l, lines);
51 75a8a1ec 2022-02-08 op 
52 75a8a1ec 2022-02-08 op 	return 1;
53 75a8a1ec 2022-02-08 op }
54 75a8a1ec 2022-02-08 op 
55 75a8a1ec 2022-02-08 op void
56 75a8a1ec 2022-02-08 op textplain_initparser(struct parser *p)
57 75a8a1ec 2022-02-08 op {
58 75a8a1ec 2022-02-08 op 	memset(p, 0, sizeof(*p));
59 75a8a1ec 2022-02-08 op 
60 75a8a1ec 2022-02-08 op 	p->name = "text/plain";
61 75a8a1ec 2022-02-08 op 	p->parse = &textplain_parse;
62 75a8a1ec 2022-02-08 op 	p->free = &textplain_free;
63 75a8a1ec 2022-02-08 op 
64 75a8a1ec 2022-02-08 op 	TAILQ_INIT(&p->head);
65 75a8a1ec 2022-02-08 op }
66 75a8a1ec 2022-02-08 op 
67 75a8a1ec 2022-02-08 op static int
68 75a8a1ec 2022-02-08 op textplain_parse(struct parser *p, const char *buf, size_t size)
69 75a8a1ec 2022-02-08 op {
70 75a8a1ec 2022-02-08 op 	return parser_foreach_line(p, buf, size, textplain_foreach_line);
71 75a8a1ec 2022-02-08 op }
72 75a8a1ec 2022-02-08 op 
73 75a8a1ec 2022-02-08 op static int
74 75a8a1ec 2022-02-08 op textplain_foreach_line(struct parser *p, const char *line, size_t linelen)
75 75a8a1ec 2022-02-08 op {
76 75a8a1ec 2022-02-08 op 	return emit_line(p, line, linelen);
77 75a8a1ec 2022-02-08 op }
78 75a8a1ec 2022-02-08 op 
79 75a8a1ec 2022-02-08 op static int
80 75a8a1ec 2022-02-08 op textplain_free(struct parser *p)
81 75a8a1ec 2022-02-08 op {
82 75a8a1ec 2022-02-08 op 	if (p->len != 0)
83 75a8a1ec 2022-02-08 op 		return emit_line(p, p->buf, p->len);
84 75a8a1ec 2022-02-08 op 	return 1;
85 75a8a1ec 2022-02-08 op }