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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <getopt.h>
#include "battery-util.h"
#include "build.h"
#include "main-func.h"
static bool arg_verbose = false;
static enum {
ACTION_AC_POWER,
ACTION_LOW,
} arg_action = ACTION_AC_POWER;
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"
" --low Check if battery is discharging and low\n",
program_invocation_short_name);
}
static int parse_argv(int argc, char *argv[]) {
enum {
ARG_VERSION = 0x100,
ARG_LOW,
};
static const struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, ARG_VERSION },
{ "verbose", no_argument, NULL, 'v' },
{ "low", no_argument, NULL, ARG_LOW },
{}
};
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 ARG_LOW:
arg_action = ACTION_LOW;
break;
case '?':
return -EINVAL;
default:
assert_not_reached();
}
if (optind < argc)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"%s takes no arguments.",
program_invocation_short_name);
return 1;
}
static int run(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)
return r;
if (arg_action == ACTION_AC_POWER) {
r = on_ac_power();
if (r < 0)
return log_error_errno(r, "Failed to read AC status: %m");
} else {
r = battery_is_discharging_and_low();
if (r < 0)
return log_error_errno(r, "Failed to read battery discharging + low status: %m");
}
if (arg_verbose)
puts(yes_no(r));
return r == 0;
}
DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run);
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