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.
25 #include "telescope.h"
27 static void imsg_event_add(struct imsgev *);
34 if ((flags = fcntl(fd, F_GETFL)) == -1)
36 if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1)
42 has_prefix(const char *str, const char *prfx)
46 for (i = 0; str[i] != '\0' && prfx[i] != '\0'; ++i)
47 if (str[i] != prfx[i])
49 return prfx[i] == '\0';
53 unicode_isspace(uint32_t cp)
61 unicode_isgraph(uint32_t cp)
69 imsg_event_add(struct imsgev *iev)
71 iev->events = EV_READ;
72 if (iev->ibuf.w.queued)
73 iev->events |= EV_WRITE;
76 event_set(&iev->ev, iev->ibuf.fd, iev->events, iev->handler, iev);
77 event_add(&iev->ev, NULL);
81 dispatch_imsg(struct imsgev *iev, short event, imsg_handlerfn **handlers,
91 if (event & EV_READ) {
92 if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
93 err(1, "imsg_read error");
97 if (event & EV_WRITE) {
98 if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN)
99 err(1, "msgbuf_write");
105 if ((n = imsg_get(ibuf, &imsg)) == -1)
109 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
111 if (i > (size / sizeof(imsg_handlerfn*)) || handlers[i] == NULL)
113 handlers[i](&imsg, datalen);
122 imsg_compose_event(struct imsgev *iev, uint16_t type, uint32_t peerid,
123 pid_t pid, int fd, const void *data, uint16_t datalen)
127 if ((ret = imsg_compose(&iev->ibuf, type, peerid, pid, fd, data,