Systemd/src/shared/id128-print.c
Lennart Poettering 394fda4caf id128: drop "MESSAGE_" prefix of pretty output
Using these IDs for message identication is one use case, but there are
others, hence let's drop the prefix, it only made sense to have while
the tool was part of journalctl.
2019-11-15 19:07:05 +01:00

73 lines
2.1 KiB
C

/* SPDX-License-Identifier: LGPL-2.1+ */
#include <stdio.h>
#include "sd-id128.h"
#include "alloc-util.h"
#include "id128-print.h"
#include "log.h"
#include "pretty-print.h"
#include "terminal-util.h"
int id128_pretty_print(sd_id128_t id, Id128PrettyPrintMode mode) {
_cleanup_free_ char *man_link = NULL, *mod_link = NULL;
const char *on, *off;
unsigned i;
assert(mode >= 0);
assert(mode < _ID128_PRETTY_PRINT_MODE_MAX);
if (mode == ID128_PRINT_ID128) {
printf(SD_ID128_FORMAT_STR "\n",
SD_ID128_FORMAT_VAL(id));
return 0;
} else if (mode == ID128_PRINT_UUID) {
printf(SD_ID128_UUID_FORMAT_STR "\n",
SD_ID128_FORMAT_VAL(id));
return 0;
}
on = ansi_highlight();
off = ansi_normal();
if (terminal_urlify("man:systemd-id128(1)", "systemd-id128(1)", &man_link) < 0)
return log_oom();
if (terminal_urlify("https://docs.python.org/3/library/uuid.html", "uuid", &mod_link) < 0)
return log_oom();
printf("As string:\n"
"%s" SD_ID128_FORMAT_STR "%s\n\n"
"As UUID:\n"
"%s" SD_ID128_UUID_FORMAT_STR "%s\n\n"
"As %s macro:\n"
"%s#define XYZ SD_ID128_MAKE(",
on, SD_ID128_FORMAT_VAL(id), off,
on, SD_ID128_FORMAT_VAL(id), off,
man_link,
on);
for (i = 0; i < 16; i++)
printf("%02x%s", id.bytes[i], i != 15 ? "," : "");
printf(")%s\n\n", off);
printf("As Python constant:\n"
">>> import %s\n"
">>> %sXYZ = uuid.UUID('" SD_ID128_FORMAT_STR "')%s\n",
mod_link,
on, SD_ID128_FORMAT_VAL(id), off);
return 0;
}
int id128_print_new(Id128PrettyPrintMode mode) {
sd_id128_t id;
int r;
r = sd_id128_randomize(&id);
if (r < 0)
return log_error_errno(r, "Failed to generate ID: %m");
return id128_pretty_print(id, mode);
}