src/shared/service-util.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <getopt.h>
   4 #include <stdio.h>
   5
   6 #include "alloc-util.h"
   7 #include "pretty-print.h"
   8 #include "service-util.h"
   9 #include "terminal-util.h"
  10 #include "util.h"
  11
  12 static int help(const char *program_path, const char *service, const char *description, bool bus_introspect) {
  13         _cleanup_free_ char *link = NULL;
  14         int r;
  15
  16         r = terminal_urlify_man(service, "8", &link);
  17         if (r < 0)
  18                 return log_oom();
  19
  20         printf("%s [OPTIONS...]\n\n"
  21                "%s%s%s\n\n"
  22                "This program takes no positional arguments.\n\n"
  23                "%sOptions%s:\n"
  24                "  -h --help                 Show this help\n"
  25                "     --version              Show package version\n"
  26                "     --bus-introspect=PATH  Write D-Bus XML introspection data\n"
  27                "\nSee the %s for details.\n"
  28                , program_path
  29                , ansi_highlight(), description, ansi_normal()
  30                , ansi_underline(), ansi_normal()
  31                , link
  32         );
  33
  34         return 0; /* No further action */
  35 }
  36
  37 int service_parse_argv(
  38                 const char *service,
  39                 const char *description,
  40                 const BusObjectImplementation* const* bus_objects,
  41                 int argc, char *argv[]) {
  42
  43         enum {
  44                 ARG_VERSION = 0x100,
  45                 ARG_BUS_INTROSPECT,
  46         };
  47
  48         static const struct option options[] = {
  49                 { "help",           no_argument,       NULL, 'h'                },
  50                 { "version",        no_argument,       NULL, ARG_VERSION        },
  51                 { "bus-introspect", required_argument, NULL, ARG_BUS_INTROSPECT },
  52                 {}
  53         };
  54
  55         int c;
  56
  57         assert(argc >= 0);
  58         assert(argv);
  59
  60         while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
  61                 switch(c) {
  62
  63                 case 'h':
  64                         return help(argv[0], service, description, bus_objects);
  65
  66                 case ARG_VERSION:
  67                         return version();
  68
  69                 case ARG_BUS_INTROSPECT:
  70                         return bus_introspect_implementations(
  71                                         stdout,
  72                                         optarg,
  73                                         bus_objects);
  74
  75                 case '?':
  76                         return -EINVAL;
  77
  78                 default:
  79                         assert_not_reached("Unknown option code.");
  80                 }
  81
  82         if (optind < argc)
  83                 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
  84                                        "This program takes no arguments.");
  85
  86         return 1; /* Further action */
  87 }