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id128: add option -P to only show value

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We have '-P' in systemctl with similar meaning.

Partially closes https://github.com/systemd/systemd/issues/27514.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2023-08-26 12:12:01 +02:00
parent 6a73a4f7c4
commit 782902f217
3 changed files with 24 additions and 3 deletions
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8
man/systemd-id128.xml
View file

@ -96,6 +96,14 @@
<xi:include href="version-info.xml" xpointer="v240"/></listitem>
</varlistentry>
<varlistentry>
<term><option>-P</option></term>
<term><option>--value</option></term>
<listitem><para>Only print the value. May be combined with
<option>-u</option>/<option>--uuid</option>.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>-a <replaceable>app-id</replaceable></option></term>
<term><option>--app-specific=<replaceable>app-id</replaceable></option></term>

16
src/id128/id128.c
View file

@ -16,6 +16,7 @@
static Id128PrettyPrintMode arg_mode = ID128_PRINT_ID128;
static sd_id128_t arg_app = {};
static bool arg_value = false;
static int verb_new(int argc, char **argv, void *userdata) {
return id128_print_new(arg_mode);
@ -85,7 +86,10 @@ static int show_one(Table **table, const char *name, sd_id128_t uuid, bool first
puts("");
return 0;
} else {
} else if (arg_value)
return id128_pretty_print(uuid, arg_mode);
else {
if (!*table) {
*table = table_new("name", "id");
if (!*table)
@ -191,6 +195,7 @@ static int parse_argv(int argc, char *argv[]) {
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, ARG_VERSION },
{ "pretty", no_argument, NULL, 'p' },
{ "value", no_argument, NULL, 'P' },
{ "app-specific", required_argument, NULL, 'a' },
{ "uuid", no_argument, NULL, 'u' },
{},
@ -201,7 +206,7 @@ static int parse_argv(int argc, char *argv[]) {
assert(argc >= 0);
assert(argv);
while ((c = getopt_long(argc, argv, "hpa:u", options, NULL)) >= 0)
while ((c = getopt_long(argc, argv, "hpa:uP", options, NULL)) >= 0)
switch (c) {
case 'h':
@ -212,6 +217,13 @@ static int parse_argv(int argc, char *argv[]) {
case 'p':
arg_mode = ID128_PRINT_PRETTY;
arg_value = false;
break;
case 'P':
arg_value = true;
if (arg_mode == ID128_PRINT_PRETTY)
arg_mode = ID128_PRINT_ID128;
break;
case 'a':

3
test/units/testsuite-74.id128.sh
View file

@ -9,7 +9,8 @@ set -o pipefail
systemd-id128 --help
systemd-id128 help
systemd-id128 show
systemd-id128 show --pretty | tail -n10
systemd-id128 show --pretty | tail
systemd-id128 show --value | tail
systemd-id128 show 4f68bce3e8cd4db196e7fbcaf984b709 # root-x86-64
systemd-id128 show --pretty 4f68bce3e8cd4db196e7fbcaf984b709