2 * vim:ts=4:sw=4:expandtab
4 * i3bar - an xcb-based status- and ws-bar for i3
6 * © 2010-2011 Axel Wagner and contributors
8 * See file LICNSE for license information
25 * Glob path, i.e. expand ~
28 char *expand_path(char *path) {
29 static glob_t globbuf;
30 if (glob(path, GLOB_NOCHECK | GLOB_TILDE, NULL, &globbuf) < 0) {
31 ELOG("glob() failed\n");
34 char *result = strdup(globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : path);
36 ELOG("malloc() failed: %s\n", strerror(errno));
43 void print_usage(char *elf_name) {
44 printf("Usage: %s [-b bar_id] [-s sock_path] [-h] [-v]\n", elf_name);
46 printf("-b <bar_id>\tBar ID for which to get the configuration\n");
47 printf("-s <sock_path>\tConnect to i3 via <sock_path>\n");
48 printf("-h\t\tDisplay this help-message and exit\n");
49 printf("-v\t\tDisplay version number and exit\n");
51 printf(" PLEASE NOTE that i3bar will be automatically started by i3\n"
52 " as soon as there is a 'bar' configuration block in your\n"
53 " config file. You should never need to start it manually.\n");
58 * We watch various signals, that are there to make our application stop.
59 * If we get one of those, we ev_unloop() and invoke the cleanup-routines
63 void sig_cb(struct ev_loop *loop, ev_signal *watcher, int revents) {
64 switch (watcher->signum) {
66 DLOG("Got a SIGTERM, stopping\n");
69 DLOG("Got a SIGINT, stopping\n");
72 DLOG("Got a SIGHUP, stopping\n");
74 ev_unloop(main_loop, EVUNLOOP_ALL);
77 int main(int argc, char **argv) {
80 char *socket_path = getenv("I3SOCK");
81 char *i3_default_sock_path = "/tmp/i3-ipc.sock";
83 /* Initialize the standard config to use 0 as default */
84 memset(&config, '\0', sizeof(config_t));
86 static struct option long_opt[] = {
87 { "socket", required_argument, 0, 's' },
88 { "bar_id", required_argument, 0, 0 },
89 { "help", no_argument, 0, 'h' },
90 { "version", no_argument, 0, 'v' },
94 while ((opt = getopt_long(argc, argv, "s:hv", long_opt, &option_index)) != -1) {
97 socket_path = expand_path(optarg);
100 printf("i3bar version " I3_VERSION " © 2010-2011 Axel Wagner and contributors\n");
104 if (!strcmp(long_opt[option_index].name, "bar_id")) {
106 config.bar_id = sstrdup(optarg);
110 print_usage(argv[0]);
116 if (!config.bar_id) {
117 /* TODO: maybe we want -f which will automatically ask i3 for the first
118 * configured bar (and error out if there are too many)? */
119 ELOG("No bar_id passed. Please let i3 start i3bar or specify --bar_id\n");
123 main_loop = ev_default_loop(0);
125 char *atom_sock_path = init_xcb_early();
127 if (socket_path == NULL) {
128 socket_path = atom_sock_path;
131 if (socket_path == NULL) {
132 ELOG("No Socket Path Specified, default to %s\n", i3_default_sock_path);
133 socket_path = expand_path(i3_default_sock_path);
137 if (init_connection(socket_path)) {
138 /* Request the bar configuration. When it arrives, we fill the config array. */
139 i3_send_msg(I3_IPC_MESSAGE_TYPE_GET_BAR_CONFIG, config.bar_id);
142 /* We listen to SIGTERM/QUIT/INT and try to exit cleanly, by stopping the main-loop.
143 * We only need those watchers on the stack, so putting them on the stack saves us
144 * some calls to free() */
145 ev_signal *sig_term = malloc(sizeof(ev_signal));
146 ev_signal *sig_int = malloc(sizeof(ev_signal));
147 ev_signal *sig_hup = malloc(sizeof(ev_signal));
149 if (sig_term == NULL || sig_int == NULL || sig_hup == NULL) {
150 ELOG("malloc() failed: %s\n", strerror(errno));
154 ev_signal_init(sig_term, &sig_cb, SIGTERM);
155 ev_signal_init(sig_int, &sig_cb, SIGINT);
156 ev_signal_init(sig_hup, &sig_cb, SIGHUP);
158 ev_signal_start(main_loop, sig_term);
159 ev_signal_start(main_loop, sig_int);
160 ev_signal_start(main_loop, sig_hup);
162 /* From here on everything should run smooth for itself, just start listening for
163 * events. We stop simply stop the event-loop, when we are finished */
164 ev_loop(main_loop, 0);
168 FREE(statusline_buffer);
171 ev_default_destroy();