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/* SPDX-License-Identifier: LGPL-2.1+ */
/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <getopt.h>
#include "util.h"
static bool arg_verbose = false;
static void help(void) {
printf("%s\n\n"
"Report whether we are connected to an external power source.\n\n"
" -h --help Show this help\n"
" --version Show package version\n"
" -v --verbose Show state as text\n"
, program_invocation_short_name);
}
static int parse_argv(int argc, char *argv[]) {
enum {
ARG_VERSION = 0x100,
};
static const struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, ARG_VERSION },
{ "verbose", no_argument, NULL, 'v' },
{}
};
int c;
assert(argc >= 0);
assert(argv);
while ((c = getopt_long(argc, argv, "hv", options, NULL)) >= 0)
switch (c) {
case 'h':
help();
return 0;
case ARG_VERSION:
return version();
case 'v':
arg_verbose = true;
break;
case '?':
return -EINVAL;
default:
assert_not_reached("Unhandled option");
}
if (optind < argc) {
log_error("%s takes no arguments.", program_invocation_short_name);
return -EINVAL;
}
return 1;
}
int main(int argc, char *argv[]) {
int r;
/* This is mostly intended to be used for scripts which want
* to detect whether AC power is plugged in or not. */
log_parse_environment();
log_open();
r = parse_argv(argc, argv);
if (r <= 0)
goto finish;
r = on_ac_power();
if (r < 0) {
log_error_errno(r, "Failed to read AC status: %m");
goto finish;
}
if (arg_verbose)
puts(yes_no(r));
finish:
return r < 0 ? EXIT_FAILURE : !r;
}
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