sway/swaybar/main.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <getopt.h>
#include "ipc-client.h"
#include "log.h"
#include "bar/bar.h"

/* global bar state */
struct bar swaybar;

void sway_terminate(int exit_code) {
	bar_teardown(&swaybar);
	exit(exit_code);
}

void sig_handler(int signal) {
	bar_teardown(&swaybar);
	exit(0);
}

int main(int argc, char **argv) {
	char *socket_path = NULL;
	char *bar_id = NULL;
	bool debug = false;

	static struct option long_options[] = {
		{"help", no_argument, NULL, 'h'},
		{"version", no_argument, NULL, 'v'},
		{"socket", required_argument, NULL, 's'},
		{"bar_id", required_argument, NULL, 'b'},
		{"debug", no_argument, NULL, 'd'},
		{0, 0, 0, 0}
	};

	const char *usage =
		"Usage: swaybar [options...]\n"
		"\n"
		"  -h, --help             Show help message and quit.\n"
		"  -v, --version          Show the version number and quit.\n"
		"  -s, --socket <socket>  Connect to sway via socket.\n"
		"  -b, --bar_id <id>      Bar ID for which to get the configuration.\n"
		"  -d, --debug            Enable debugging.\n"
		"\n"
		" PLEASE NOTE that swaybar will be automatically started by sway as\n"
		" soon as there is a 'bar' configuration block in your config file.\n"
		" You should never need to start it manually.\n";

	int c;
	while (1) {
		int option_index = 0;
		c = getopt_long(argc, argv, "hvs:b:d", long_options, &option_index);
		if (c == -1) {
			break;
		}
		switch (c) {
		case 's': // Socket
			socket_path = strdup(optarg);
			break;
		case 'b': // Type
			bar_id = strdup(optarg);
			break;
		case 'v':
#if defined SWAY_GIT_VERSION && defined SWAY_GIT_BRANCH && defined SWAY_VERSION_DATE
			fprintf(stdout, "sway version %s (%s, branch \"%s\")\n", SWAY_GIT_VERSION, SWAY_VERSION_DATE, SWAY_GIT_BRANCH);
#else
			fprintf(stdout, "version not detected\n");
#endif
			exit(EXIT_SUCCESS);
			break;
		case 'd': // Debug
			debug = true;
			break;
		default:
			fprintf(stderr, "%s", usage);
			exit(EXIT_FAILURE);
		}
	}

	if (!bar_id) {
		sway_abort("No bar_id passed. Provide --bar_id or let sway start swaybar");
	}

	if (debug) {
		init_log(L_DEBUG);
	} else {
		init_log(L_ERROR);
	}

	if (!socket_path) {
		socket_path = get_socketpath();
		if (!socket_path) {
			sway_abort("Unable to retrieve socket path");
		}
	}

	signal(SIGTERM, sig_handler);

	bar_setup(&swaybar, socket_path, bar_id);

	free(socket_path);
	free(bar_id);

	bar_run(&swaybar);

	// gracefully shutdown swaybar and status_command
	bar_teardown(&swaybar);

	return 0;
}