2 * vim:ts=4:sw=4:expandtab
4 * i3bar - an xcb-based status- and ws-bar for i3
5 * © 2010-2012 Axel Wagner and contributors (see also: LICENSE)
21 * Having verboselog() and errorlog() 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);
41 * Glob path, i.e. expand ~
44 char *expand_path(char *path) {
45 static glob_t globbuf;
46 if (glob(path, GLOB_NOCHECK | GLOB_TILDE, NULL, &globbuf) < 0) {
47 ELOG("glob() failed\n");
50 char *result = sstrdup(globbuf.gl_pathc > 0 ? globbuf.gl_pathv[0] : path);
55 void print_usage(char *elf_name) {
56 printf("Usage: %s -b bar_id [-s sock_path] [-h] [-v]\n", elf_name);
58 printf("-b, --bar_id <bar_id>\tBar ID for which to get the configuration\n");
59 printf("-s, --socket <sock_path>\tConnect to i3 via <sock_path>\n");
60 printf("-h, --help Display this help-message and exit\n");
61 printf("-v, --version Display version number and exit\n");
63 printf(" PLEASE NOTE that i3bar will be automatically started by i3\n"
64 " as soon as there is a 'bar' configuration block in your\n"
65 " config file. You should never need to start it manually.\n");
70 * We watch various signals, that are there to make our application stop.
71 * If we get one of those, we ev_unloop() and invoke the cleanup-routines
75 void sig_cb(struct ev_loop *loop, ev_signal *watcher, int revents) {
76 switch (watcher->signum) {
78 DLOG("Got a SIGTERM, stopping\n");
81 DLOG("Got a SIGINT, stopping\n");
84 DLOG("Got a SIGHUP, stopping\n");
86 ev_unloop(main_loop, EVUNLOOP_ALL);
89 int main(int argc, char **argv) {
92 char *socket_path = getenv("I3SOCK");
93 char *i3_default_sock_path = "/tmp/i3-ipc.sock";
95 /* Initialize the standard config to use 0 as default */
96 memset(&config, '\0', sizeof(config_t));
98 static struct option long_opt[] = {
99 { "socket", required_argument, 0, 's' },
100 { "bar_id", required_argument, 0, 'b' },
101 { "help", no_argument, 0, 'h' },
102 { "version", no_argument, 0, 'v' },
106 while ((opt = getopt_long(argc, argv, "b:s:hv", long_opt, &option_index)) != -1) {
109 socket_path = expand_path(optarg);
112 printf("i3bar version " I3_VERSION " © 2010-2011 Axel Wagner and contributors\n");
116 config.bar_id = sstrdup(optarg);
119 print_usage(argv[0]);
125 if (!config.bar_id) {
126 /* TODO: maybe we want -f which will automatically ask i3 for the first
127 * configured bar (and error out if there are too many)? */
128 ELOG("No bar_id passed. Please let i3 start i3bar or specify --bar_id\n");
132 main_loop = ev_default_loop(0);
134 char *atom_sock_path = init_xcb_early();
136 if (socket_path == NULL) {
137 socket_path = atom_sock_path;
140 if (socket_path == NULL) {
141 ELOG("No Socket Path Specified, default to %s\n", i3_default_sock_path);
142 socket_path = expand_path(i3_default_sock_path);
146 if (init_connection(socket_path)) {
147 /* Request the bar configuration. When it arrives, we fill the config array. */
148 i3_send_msg(I3_IPC_MESSAGE_TYPE_GET_BAR_CONFIG, config.bar_id);
151 /* We listen to SIGTERM/QUIT/INT and try to exit cleanly, by stopping the main-loop.
152 * We only need those watchers on the stack, so putting them on the stack saves us
153 * some calls to free() */
154 ev_signal *sig_term = smalloc(sizeof(ev_signal));
155 ev_signal *sig_int = smalloc(sizeof(ev_signal));
156 ev_signal *sig_hup = smalloc(sizeof(ev_signal));
158 ev_signal_init(sig_term, &sig_cb, SIGTERM);
159 ev_signal_init(sig_int, &sig_cb, SIGINT);
160 ev_signal_init(sig_hup, &sig_cb, SIGHUP);
162 ev_signal_start(main_loop, sig_term);
163 ev_signal_start(main_loop, sig_int);
164 ev_signal_start(main_loop, sig_hup);
166 /* From here on everything should run smooth for itself, just start listening for
167 * events. We stop simply stop the event-loop, when we are finished */
168 ev_loop(main_loop, 0);
172 FREE(statusline_buffer);
175 ev_default_destroy();