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_sample(const char *name, sd_id128_t id) {
  14        _cleanup_free_ char *man_link = NULL, *mod_link = NULL;
  15         const char *on, *off;
  16         unsigned i;
  17
  18         on = ansi_highlight();
  19         off = ansi_normal();
  20
  21         if (terminal_urlify("man:systemd-id128(1)", "systemd-id128(1)", &man_link) < 0)
  22                 return log_oom();
  23
  24         if (terminal_urlify("https://docs.python.org/3/library/uuid.html", "uuid", &mod_link) < 0)
  25                 return log_oom();
  26
  27         printf("As string:\n"
  28                "%s" SD_ID128_FORMAT_STR "%s\n\n"
  29                "As UUID:\n"
  30                "%s" SD_ID128_UUID_FORMAT_STR "%s\n\n"
  31                "As %s macro:\n"
  32                "%s#define %s SD_ID128_MAKE(",
  33                on, SD_ID128_FORMAT_VAL(id), off,
  34                on, SD_ID128_FORMAT_VAL(id), off,
  35                man_link,
  36                on, name);
  37         for (i = 0; i < 16; i++)
  38                 printf("%02x%s", id.bytes[i], i != 15 ? "," : "");
  39         printf(")%s\n\n", off);
  40
  41         printf("As Python constant:\n"
  42                ">>> import %s\n"
  43                ">>> %s%s = uuid.UUID('" SD_ID128_FORMAT_STR "')%s\n",
  44                mod_link,
  45                on, name, SD_ID128_FORMAT_VAL(id), off);
  46
  47         return 0;
  48 }
  49
  50
  51 int id128_pretty_print(sd_id128_t id, Id128PrettyPrintMode mode) {
  52         assert(mode >= 0);
  53         assert(mode < _ID128_PRETTY_PRINT_MODE_MAX);
  54
  55         if (mode == ID128_PRINT_ID128) {
  56                 printf(SD_ID128_FORMAT_STR "\n",
  57                        SD_ID128_FORMAT_VAL(id));
  58                 return 0;
  59         } else if (mode == ID128_PRINT_UUID) {
  60                 printf(SD_ID128_UUID_FORMAT_STR "\n",
  61                        SD_ID128_FORMAT_VAL(id));
  62                 return 0;
  63         } else
  64                 return id128_pretty_print_sample("XYZ", id);
  65 }
  66
  67 int id128_print_new(Id128PrettyPrintMode mode) {
  68         sd_id128_t id;
  69         int r;
  70
  71         r = sd_id128_randomize(&id);
  72         if (r < 0)
  73                 return log_error_errno(r, "Failed to generate ID: %m");
  74
  75         return id128_pretty_print(id, mode);
  76 }