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/* Copyright (C) 2019, 2020 C. McEnroe <june@causal.agency>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#import <Cocoa/Cocoa.h>
#import <err.h>
#import <signal.h>
#import <stdio.h>
#import <stdlib.h>
#import <sysexits.h>
#import <unistd.h>
typedef unsigned uint;
static pid_t pid;
static void spawn(char *argv[]) {
pid = fork();
if (pid < 0) err(EX_OSERR, "fork");
if (pid) return;
execvp(argv[0], argv);
err(EX_CONFIG, "%s", argv[0]);
}
static void handler(int signal) {
(void)signal;
int status;
pid_t pid = wait(&status);
if (pid < 0) _exit(EX_OSERR);
_exit(status);
}
int main(int argc, char *argv[]) {
uint delay = 8;
for (int opt; 0 < (opt = getopt(argc, argv, "t:"));) {
switch (opt) {
break; case 't': delay = strtoul(optarg, NULL, 10);
break; default: return EX_USAGE;
}
}
argc -= optind;
argv += optind;
if (!argc) errx(EX_USAGE, "command required");
NSWorkspace *workspace = [NSWorkspace sharedWorkspace];
NSNotificationCenter *notifCenter = [workspace notificationCenter];
[notifCenter addObserverForName:NSWorkspaceWillSleepNotification
object:nil
queue:nil
usingBlock:^(NSNotification *notif) {
(void)notif;
signal(SIGCHLD, SIG_IGN);
int error = kill(pid, SIGHUP);
if (error) err(EX_UNAVAILABLE, "kill");
int status;
wait(&status);
}];
[notifCenter addObserverForName:NSWorkspaceDidWakeNotification
object:nil
queue:nil
usingBlock:^(NSNotification *notif) {
(void)notif;
warnx("waiting %u seconds...", delay);
sleep(delay);
signal(SIGCHLD, handler);
spawn(argv);
}];
signal(SIGCHLD, handler);
spawn(argv);
[[NSApplication sharedApplication] run];
}
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