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Commit | Line | Data |
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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
3d20ed6d | 2 | |
ed47df89 LP |
3 | #include <getopt.h> |
4 | ||
d6b4d1c7 | 5 | #include "build.h" |
5e332028 | 6 | #include "main-func.h" |
06795b02 | 7 | #include "udev-util.h" |
3d20ed6d | 8 | |
ed47df89 LP |
9 | static bool arg_verbose = false; |
10 | ||
11 | static void help(void) { | |
12 | printf("%s\n\n" | |
13 | "Report whether we are connected to an external power source.\n\n" | |
14 | " -h --help Show this help\n" | |
15 | " --version Show package version\n" | |
bc556335 DDM |
16 | " -v --verbose Show state as text\n", |
17 | program_invocation_short_name); | |
ed47df89 LP |
18 | } |
19 | ||
20 | static int parse_argv(int argc, char *argv[]) { | |
21 | ||
22 | enum { | |
23 | ARG_VERSION = 0x100, | |
24 | }; | |
25 | ||
26 | static const struct option options[] = { | |
27 | { "help", no_argument, NULL, 'h' }, | |
28 | { "version", no_argument, NULL, ARG_VERSION }, | |
29 | { "verbose", no_argument, NULL, 'v' }, | |
30 | {} | |
31 | }; | |
32 | ||
33 | int c; | |
34 | ||
35 | assert(argc >= 0); | |
36 | assert(argv); | |
37 | ||
38 | while ((c = getopt_long(argc, argv, "hv", options, NULL)) >= 0) | |
39 | ||
40 | switch (c) { | |
41 | ||
42 | case 'h': | |
43 | help(); | |
44 | return 0; | |
45 | ||
46 | case ARG_VERSION: | |
47 | return version(); | |
48 | ||
49 | case 'v': | |
50 | arg_verbose = true; | |
51 | break; | |
52 | ||
53 | case '?': | |
54 | return -EINVAL; | |
55 | ||
56 | default: | |
04499a70 | 57 | assert_not_reached(); |
ed47df89 LP |
58 | } |
59 | ||
baaa35ad ZJS |
60 | if (optind < argc) |
61 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
62 | "%s takes no arguments.", | |
63 | program_invocation_short_name); | |
ed47df89 LP |
64 | |
65 | return 1; | |
66 | } | |
67 | ||
9a5cedc3 | 68 | static int run(int argc, char *argv[]) { |
06cdd248 LP |
69 | int r; |
70 | ||
71 | /* This is mostly intended to be used for scripts which want | |
72 | * to detect whether AC power is plugged in or not. */ | |
73 | ||
ed47df89 LP |
74 | log_parse_environment(); |
75 | log_open(); | |
76 | ||
77 | r = parse_argv(argc, argv); | |
78 | if (r <= 0) | |
9a5cedc3 | 79 | return r; |
ed47df89 | 80 | |
240dbaa4 | 81 | r = on_ac_power(); |
9a5cedc3 ZJS |
82 | if (r < 0) |
83 | return log_error_errno(r, "Failed to read AC status: %m"); | |
06cdd248 | 84 | |
ed47df89 LP |
85 | if (arg_verbose) |
86 | puts(yes_no(r)); | |
87 | ||
9a5cedc3 | 88 | return r == 0; |
06cdd248 | 89 | } |
9a5cedc3 ZJS |
90 | |
91 | DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); |