1 70d237df 2021-07-25 op /*
 2 70d237df 2021-07-25 op  * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
 3 70d237df 2021-07-25 op  *
 4 70d237df 2021-07-25 op  * Permission to use, copy, modify, and distribute this software for any
 5 70d237df 2021-07-25 op  * purpose with or without fee is hereby granted, provided that the above
 6 70d237df 2021-07-25 op  * copyright notice and this permission notice appear in all copies.
 7 70d237df 2021-07-25 op  *
 8 70d237df 2021-07-25 op  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 9 70d237df 2021-07-25 op  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 70d237df 2021-07-25 op  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 70d237df 2021-07-25 op  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 70d237df 2021-07-25 op  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 70d237df 2021-07-25 op  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 70d237df 2021-07-25 op  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 70d237df 2021-07-25 op  */
16 70d237df 2021-07-25 op 
17 70d237df 2021-07-25 op /*
18 70d237df 2021-07-25 op  * A streaming text/plain "parser."
19 70d237df 2021-07-25 op  */
20 70d237df 2021-07-25 op 
21 70d237df 2021-07-25 op #include <stdlib.h>
22 70d237df 2021-07-25 op #include <string.h>
23 70d237df 2021-07-25 op 
24 70d237df 2021-07-25 op #include "telescope.h"
25 70d237df 2021-07-25 op #include "parser.h"
26 70d237df 2021-07-25 op 
27 70d237df 2021-07-25 op static int	textplain_parse(struct parser*, const char*, size_t);
28 70d237df 2021-07-25 op static int	textplain_foreach_line(struct parser*, const char*, size_t);
29 70d237df 2021-07-25 op static int	textplain_free(struct parser*);
30 70d237df 2021-07-25 op 
31 70d237df 2021-07-25 op static inline int
32 d646a8f7 2021-07-25 op emit_line(struct parser *p, const char *line, size_t len)
33 70d237df 2021-07-25 op {
34 70d237df 2021-07-25 op 	struct line *l;
35 70d237df 2021-07-25 op 
36 70d237df 2021-07-25 op 	if ((l = calloc(1, sizeof(*l))) == NULL)
37 70d237df 2021-07-25 op 		return 0;
38 70d237df 2021-07-25 op 
39 04439a78 2021-07-25 op 	l->type = LINE_TEXT;
40 70d237df 2021-07-25 op 
41 70d237df 2021-07-25 op 	if (len != 0) {
42 70d237df 2021-07-25 op 		if ((l->line = calloc(1, len+1)) == NULL) {
43 70d237df 2021-07-25 op 			free(l);
44 70d237df 2021-07-25 op 			return 0;
45 70d237df 2021-07-25 op 		}
46 70d237df 2021-07-25 op 
47 70d237df 2021-07-25 op 		memcpy(l->line, line, len);
48 70d237df 2021-07-25 op 	}
49 70d237df 2021-07-25 op 
50 70d237df 2021-07-25 op 	if (TAILQ_EMPTY(&p->head))
51 70d237df 2021-07-25 op 		TAILQ_INSERT_HEAD(&p->head, l, lines);
52 70d237df 2021-07-25 op 	else
53 70d237df 2021-07-25 op 		TAILQ_INSERT_TAIL(&p->head, l, lines);
54 70d237df 2021-07-25 op 
55 70d237df 2021-07-25 op 	return 1;
56 70d237df 2021-07-25 op }
57 70d237df 2021-07-25 op 
58 70d237df 2021-07-25 op void
59 70d237df 2021-07-25 op textplain_initparser(struct parser *p)
60 70d237df 2021-07-25 op {
61 70d237df 2021-07-25 op 	memset(p, 0, sizeof(*p));
62 70d237df 2021-07-25 op 
63 70d237df 2021-07-25 op 	p->name = "text/plain";
64 70d237df 2021-07-25 op 	p->parse = &textplain_parse;
65 70d237df 2021-07-25 op 	p->free = &textplain_free;
66 70d237df 2021-07-25 op }
67 70d237df 2021-07-25 op 
68 70d237df 2021-07-25 op static int
69 70d237df 2021-07-25 op textplain_parse(struct parser *p, const char *buf, size_t size)
70 70d237df 2021-07-25 op {
71 70d237df 2021-07-25 op 	return parser_foreach_line(p, buf, size, textplain_foreach_line);
72 70d237df 2021-07-25 op }
73 70d237df 2021-07-25 op 
74 70d237df 2021-07-25 op static int
75 70d237df 2021-07-25 op textplain_foreach_line(struct parser *p, const char *line, size_t linelen)
76 70d237df 2021-07-25 op {
77 d646a8f7 2021-07-25 op 	return emit_line(p, line, linelen);
78 70d237df 2021-07-25 op }
79 70d237df 2021-07-25 op 
80 70d237df 2021-07-25 op static int
81 70d237df 2021-07-25 op textplain_free(struct parser *p)
82 70d237df 2021-07-25 op {
83 70d237df 2021-07-25 op 	if (p->len != 0)
84 d646a8f7 2021-07-25 op 		return emit_line(p, p->buf, p->len);
85 70d237df 2021-07-25 op 	return 1;
86 70d237df 2021-07-25 op }