src/shared/id128-print.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <stdio.h>
   4
   5 #include "sd-id128.h"
   6
   7 #include "alloc-util.h"
   8 #include "id128-print.h"
   9 #include "log.h"
  10 #include "pretty-print.h"
  11 #include "terminal-util.h"
  12
  13 int id128_pretty_print(sd_id128_t id, Id128PrettyPrintMode mode) {
  14         _cleanup_free_ char *man_link = NULL, *mod_link = NULL;
  15         const char *on, *off;
  16         unsigned i;
  17
  18         assert(mode >= 0);
  19         assert(mode < _ID128_PRETTY_PRINT_MODE_MAX);
  20
  21         if (mode == ID128_PRINT_ID128) {
  22                 printf(SD_ID128_FORMAT_STR "\n",
  23                        SD_ID128_FORMAT_VAL(id));
  24                 return 0;
  25         } else if (mode == ID128_PRINT_UUID) {
  26                 printf(SD_ID128_UUID_FORMAT_STR "\n",
  27                        SD_ID128_FORMAT_VAL(id));
  28                 return 0;
  29         }
  30
  31         on = ansi_highlight();
  32         off = ansi_normal();
  33
  34         if (terminal_urlify("man:systemd-id128(1)", "systemd-id128(1)", &man_link) < 0)
  35                 return log_oom();
  36
  37         if (terminal_urlify("https://docs.python.org/3/library/uuid.html", "uuid", &mod_link) < 0)
  38                 return log_oom();
  39
  40         printf("As string:\n"
  41                "%s" SD_ID128_FORMAT_STR "%s\n\n"
  42                "As UUID:\n"
  43                "%s" SD_ID128_UUID_FORMAT_STR "%s\n\n"
  44                "As %s macro:\n"
  45                "%s#define XYZ SD_ID128_MAKE(",
  46                on, SD_ID128_FORMAT_VAL(id), off,
  47                on, SD_ID128_FORMAT_VAL(id), off,
  48                man_link,
  49                on);
  50         for (i = 0; i < 16; i++)
  51                 printf("%02x%s", id.bytes[i], i != 15 ? "," : "");
  52         printf(")%s\n\n", off);
  53
  54         printf("As Python constant:\n"
  55                ">>> import %s\n"
  56                ">>> %sXYZ = uuid.UUID('" SD_ID128_FORMAT_STR "')%s\n",
  57                mod_link,
  58                on, SD_ID128_FORMAT_VAL(id), off);
  59
  60         return 0;
  61 }
  62
  63 int id128_print_new(Id128PrettyPrintMode mode) {
  64         sd_id128_t id;
  65         int r;
  66
  67         r = sd_id128_randomize(&id);
  68         if (r < 0)
  69                 return log_error_errno(r, "Failed to generate ID: %m");
  70
  71         return id128_pretty_print(id, mode);
  72 }