2 * vim:ts=4:sw=4:expandtab
4 * i3bar - an xcb-based status- and ws-bar for i3
5 * © 2010 Axel Wagner and contributors (see also: LICENSE)
21 * Having verboselog(), errorlog() and debuglog() is necessary when using libi3.
24 void verboselog(char *fmt, ...) {
28 vfprintf(stdout, fmt, args);
32 void errorlog(char *fmt, ...) {
36 vfprintf(stderr, fmt, args);
40 void debuglog(char *fmt, ...) {
44 * Glob path, i.e. expand ~
47 char *expand_path(char *path) {
48 static glob_t globbuf;
49 if (glob(path, GLOB_NOCHECK | GLOB_TILDE, NULL, &globbuf) < 0) {
50 ELOG("glob() failed\n");
53 char *result = sstrdup(globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : path);
58 void print_usage(char *elf_name) {
59 printf("Usage: %s -b bar_id [-s sock_path] [-h] [-v]\n", elf_name);
61 printf("-b, --bar_id <bar_id>\tBar ID for which to get the configuration\n");
62 printf("-s, --socket <sock_path>\tConnect to i3 via <sock_path>\n");
63 printf("-h, --help Display this help message and exit\n");
64 printf("-v, --version Display version number and exit\n");
66 printf(" PLEASE NOTE that i3bar will be automatically started by i3\n"
67 " as soon as there is a 'bar' configuration block in your\n"
68 " config file. You should never need to start it manually.\n");
73 * We watch various signals, that are there to make our application stop.
74 * If we get one of those, we ev_unloop() and invoke the cleanup routines
78 void sig_cb(struct ev_loop *loop, ev_signal *watcher, int revents) {
79 switch (watcher->signum) {
81 DLOG("Got a SIGTERM, stopping\n");
84 DLOG("Got a SIGINT, stopping\n");
87 DLOG("Got a SIGHUP, stopping\n");
89 ev_unloop(main_loop, EVUNLOOP_ALL);
92 int main(int argc, char **argv) {
95 char *socket_path = getenv("I3SOCK");
96 if (socket_path != NULL) {
97 socket_path = sstrdup(socket_path);
99 char *i3_default_sock_path = "/tmp/i3-ipc.sock";
101 /* Initialize the standard config to use 0 as default */
102 memset(&config, '\0', sizeof(config_t));
104 static struct option long_opt[] = {
105 {"socket", required_argument, 0, 's'},
106 {"bar_id", required_argument, 0, 'b'},
107 {"help", no_argument, 0, 'h'},
108 {"version", no_argument, 0, 'v'},
111 while ((opt = getopt_long(argc, argv, "b:s:hv", long_opt, &option_index)) != -1) {
114 socket_path = expand_path(optarg);
117 printf("i3bar version " I3_VERSION " © 2010 Axel Wagner and contributors\n");
121 config.bar_id = sstrdup(optarg);
124 print_usage(argv[0]);
130 if (!config.bar_id) {
131 /* TODO: maybe we want -f which will automatically ask i3 for the first
132 * configured bar (and error out if there are too many)? */
133 ELOG("No bar_id passed. Please let i3 start i3bar or specify --bar_id\n");
137 main_loop = ev_default_loop(0);
139 char *atom_sock_path = init_xcb_early();
141 if (socket_path == NULL) {
142 socket_path = atom_sock_path;
144 free(atom_sock_path);
147 if (socket_path == NULL) {
148 ELOG("No socket path specified, default to %s\n", i3_default_sock_path);
149 socket_path = expand_path(i3_default_sock_path);
155 if (init_connection(socket_path)) {
156 /* Request the bar configuration. When it arrives, we fill the config array. */
157 i3_send_msg(I3_IPC_MESSAGE_TYPE_GET_BAR_CONFIG, config.bar_id);
161 /* We listen to SIGTERM/QUIT/INT and try to exit cleanly, by stopping the main loop.
162 * We only need those watchers on the stack, so putting them on the stack saves us
163 * some calls to free() */
164 ev_signal *sig_term = smalloc(sizeof(ev_signal));
165 ev_signal *sig_int = smalloc(sizeof(ev_signal));
166 ev_signal *sig_hup = smalloc(sizeof(ev_signal));
168 ev_signal_init(sig_term, &sig_cb, SIGTERM);
169 ev_signal_init(sig_int, &sig_cb, SIGINT);
170 ev_signal_init(sig_hup, &sig_cb, SIGHUP);
172 ev_signal_start(main_loop, sig_term);
173 ev_signal_start(main_loop, sig_int);
174 ev_signal_start(main_loop, sig_hup);
176 /* From here on everything should run smooth for itself, just start listening for
177 * events. We stop simply stop the event loop, when we are finished */
178 ev_loop(main_loop, 0);
183 ev_default_destroy();