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