1 27bf601b 2021-03-12 op /*
 2 27bf601b 2021-03-12 op  * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
 3 27bf601b 2021-03-12 op  *
 4 27bf601b 2021-03-12 op  * Permission to use, copy, modify, and distribute this software for any
 5 27bf601b 2021-03-12 op  * purpose with or without fee is hereby granted, provided that the above
 6 27bf601b 2021-03-12 op  * copyright notice and this permission notice appear in all copies.
 7 27bf601b 2021-03-12 op  *
 8 27bf601b 2021-03-12 op  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 9 27bf601b 2021-03-12 op  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 27bf601b 2021-03-12 op  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 27bf601b 2021-03-12 op  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 27bf601b 2021-03-12 op  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 27bf601b 2021-03-12 op  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 27bf601b 2021-03-12 op  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 27bf601b 2021-03-12 op  */
16 27bf601b 2021-03-12 op 
17 27bf601b 2021-03-12 op /*
18 27bf601b 2021-03-12 op  * A streaming text/plain "parser."
19 27bf601b 2021-03-12 op  */
20 27bf601b 2021-03-12 op 
21 27bf601b 2021-03-12 op #include <stdlib.h>
22 27bf601b 2021-03-12 op #include <string.h>
23 27bf601b 2021-03-12 op 
24 63f1dea5 2021-07-12 op #include "telescope.h"
25 63f1dea5 2021-07-12 op #include "parser.h"
26 63f1dea5 2021-07-12 op 
27 27bf601b 2021-03-12 op static int	textplain_parse(struct parser*, const char*, size_t);
28 a5845bb5 2021-03-20 op static int	textplain_foreach_line(struct parser*, const char*, size_t);
29 27bf601b 2021-03-12 op static int	textplain_free(struct parser*);
30 27bf601b 2021-03-12 op 
31 27bf601b 2021-03-12 op static inline int
32 27bf601b 2021-03-12 op emit_line(struct parser *p, enum line_type type, const char *line, size_t len)
33 27bf601b 2021-03-12 op {
34 27bf601b 2021-03-12 op 	struct line *l;
35 27bf601b 2021-03-12 op 
36 27bf601b 2021-03-12 op 	if ((l = calloc(1, sizeof(*l))) == NULL)
37 27bf601b 2021-03-12 op 		return 0;
38 27bf601b 2021-03-12 op 
39 27bf601b 2021-03-12 op 	l->type = type;
40 27bf601b 2021-03-12 op 
41 27bf601b 2021-03-12 op 	if (len != 0) {
42 27bf601b 2021-03-12 op 		if ((l->line = calloc(1, len+1)) == NULL) {
43 27bf601b 2021-03-12 op 			free(l);
44 27bf601b 2021-03-12 op 			return 0;
45 27bf601b 2021-03-12 op 		}
46 27bf601b 2021-03-12 op 
47 27bf601b 2021-03-12 op 		memcpy(l->line, line, len);
48 27bf601b 2021-03-12 op 	}
49 27bf601b 2021-03-12 op 
50 27bf601b 2021-03-12 op 	if (TAILQ_EMPTY(&p->head))
51 27bf601b 2021-03-12 op 		TAILQ_INSERT_HEAD(&p->head, l, lines);
52 27bf601b 2021-03-12 op 	else
53 27bf601b 2021-03-12 op 		TAILQ_INSERT_TAIL(&p->head, l, lines);
54 27bf601b 2021-03-12 op 
55 27bf601b 2021-03-12 op 	return 1;
56 27bf601b 2021-03-12 op }
57 27bf601b 2021-03-12 op 
58 27bf601b 2021-03-12 op void
59 27bf601b 2021-03-12 op textplain_initparser(struct parser *p)
60 27bf601b 2021-03-12 op {
61 27bf601b 2021-03-12 op 	memset(p, 0, sizeof(*p));
62 27bf601b 2021-03-12 op 
63 fc43eadd 2021-03-12 op 	p->name = "text/plain";
64 27bf601b 2021-03-12 op 	p->parse = &textplain_parse;
65 27bf601b 2021-03-12 op 	p->free = &textplain_free;
66 27bf601b 2021-03-12 op }
67 27bf601b 2021-03-12 op 
68 27bf601b 2021-03-12 op static int
69 27bf601b 2021-03-12 op textplain_parse(struct parser *p, const char *buf, size_t size)
70 27bf601b 2021-03-12 op {
71 a5845bb5 2021-03-20 op 	return parser_foreach_line(p, buf, size, textplain_foreach_line);
72 a5845bb5 2021-03-20 op }
73 27bf601b 2021-03-12 op 
74 a5845bb5 2021-03-20 op static int
75 a5845bb5 2021-03-20 op textplain_foreach_line(struct parser *p, const char *line, size_t linelen)
76 a5845bb5 2021-03-20 op {
77 a5845bb5 2021-03-20 op 	return emit_line(p, LINE_PRE_CONTENT, line, linelen);
78 27bf601b 2021-03-12 op }
79 27bf601b 2021-03-12 op 
80 27bf601b 2021-03-12 op static int
81 27bf601b 2021-03-12 op textplain_free(struct parser *p)
82 27bf601b 2021-03-12 op {
83 a97be00d 2021-03-16 op 	if (p->len != 0)
84 a97be00d 2021-03-16 op 		return emit_line(p, LINE_PRE_CONTENT, p->buf, p->len);
85 a97be00d 2021-03-16 op 	return 1;
86 27bf601b 2021-03-12 op }