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, bool pretty) {
  14         unsigned i;
  15         _cleanup_free_ char *man_link = NULL, *mod_link = NULL;
  16         const char *on, *off;
  17
  18         if (!pretty) {
  19                 printf(SD_ID128_FORMAT_STR "\n",
  20                        SD_ID128_FORMAT_VAL(id));
  21                 return 0;
  22         }
  23
  24         on = ansi_highlight();
  25         off = ansi_normal();
  26
  27         if (terminal_urlify("man:systemd-id128(1)", "systemd-id128(1)", &man_link) < 0)
  28                 return log_oom();
  29
  30         if (terminal_urlify("https://docs.python.org/3/library/uuid.html", "uuid", &mod_link) < 0)
  31                 return log_oom();
  32
  33         printf("As string:\n"
  34                "%s" SD_ID128_FORMAT_STR "%s\n\n"
  35                "As UUID:\n"
  36                "%s%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x%s\n\n"
  37                "As %s macro:\n"
  38                "%s#define MESSAGE_XYZ SD_ID128_MAKE(",
  39                on, SD_ID128_FORMAT_VAL(id), off,
  40                on, SD_ID128_FORMAT_VAL(id), off,
  41                man_link,
  42                on);
  43         for (i = 0; i < 16; i++)
  44                 printf("%02x%s", id.bytes[i], i != 15 ? "," : "");
  45         printf(")%s\n\n", off);
  46
  47         printf("As Python constant:\n"
  48                ">>> import %s\n"
  49                ">>> %sMESSAGE_XYZ = uuid.UUID('" SD_ID128_FORMAT_STR "')%s\n",
  50                mod_link,
  51                on, SD_ID128_FORMAT_VAL(id), off);
  52
  53         return 0;
  54 }
  55
  56 int id128_print_new(bool pretty) {
  57         sd_id128_t id;
  58         int r;
  59
  60         r = sd_id128_randomize(&id);
  61         if (r < 0)
  62                 return log_error_errno(r, "Failed to generate ID: %m");
  63
  64         return id128_pretty_print(id, pretty);
  65 }