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locale: honour new env var $SYSTEMD_UTF8=

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This is useful to force off fancy unicode glyph use (i.e. use "->"
instead of "→"), which is useful in tests where locales might be
missing, and thus control via $LC_CTYPE is not reliable.

Use this in TEST-58, to ensure the output checks we do aren't confused
by missing these glyphs being unicode or not.
This commit is contained in:
Lennart Poettering 2022-11-10 17:18:50 +01:00
parent 5db8b0bcad
commit 71ea84369e
3 changed files with 26 additions and 9 deletions
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6
docs/ENVIRONMENT.md
View File

@ -85,6 +85,12 @@ All tools:
* `$SYSTEMD_MEMPOOL=0` — if set, the internal memory caching logic employed by
hash tables is turned off, and libc `malloc()` is used for all allocations.
* `$SYSTEMD_UTF8=` — takes a boolean value, and overrides whether to generate
non-ASCII special glyphs at various places (i.e. "→" instead of
"->"). Usually this is deterined automatically, based on $LC_CTYPE, but in
scenarios where locale definitions are not installed it might make sense to
override this check explicitly.
* `$SYSTEMD_EMOJI=0` — if set, tools such as `systemd-analyze security` will
not output graphical smiley emojis, but ASCII alternatives instead. Note that
this only controls use of Unicode emoji glyphs, and has no effect on other

10
src/basic/locale-util.c
View File

@ -286,8 +286,9 @@ void init_gettext(void) {
}
bool is_locale_utf8(void) {
const char *set;
static int cached_answer = -1;
const char *set;
int r;
/* Note that we default to 'true' here, since today UTF8 is
* pretty much supported everywhere. */
@ -295,6 +296,13 @@ bool is_locale_utf8(void) {
if (cached_answer >= 0)
goto out;
r = getenv_bool_secure("SYSTEMD_UTF8");
if (r >= 0) {
cached_answer = r;
goto out;
} else if (r != -ENXIO)
log_debug_errno(r, "Failed to parse $SYSTEMD_UTF8, ignoring: %m");
if (!setlocale(LC_ALL, "")) {
cached_answer = true;
goto out;

19
test/units/testsuite-58.sh
View File

@ -14,6 +14,9 @@ fi
export SYSTEMD_LOG_LEVEL=debug
export PAGER=cat
# Disable use of special glyphs such as →
export SYSTEMD_UTF8=0
seed=750b6cd5c4ae4012a15e7be3c29e6a47
if ! systemd-detect-virt --quiet --container; then
@ -327,7 +330,7 @@ EOF
output=$(systemd-repart --definitions="$defs" --empty=create --size=100M --json=pretty "$imgs/zzz")
diff <(echo "$output") - <<EOF
diff -u <(echo "$output") - <<EOF
[
{
"type" : "swap",
@ -338,10 +341,10 @@ EOF
"offset" : 1048576,
"old_size" : 0,
"raw_size" : 33554432,
"size" : "→ 32.0M",
"size" : "-> 32.0M",
"old_padding" : 0,
"raw_padding" : 0,
"padding" : "→ 0B",
"padding" : "-> 0B",
"activity" : "create",
"drop-in_files" : [
"$defs/root.conf.d/override1.conf",
@ -382,7 +385,7 @@ EOF
output=$(systemd-repart --definitions="$defs/1" --definitions="$defs/2" --empty=create --size=100M --json=pretty "$imgs/zzz")
diff <(echo "$output") - <<EOF
diff -u <(echo "$output") - <<EOF
[
{
"type" : "swap",
@ -393,10 +396,10 @@ EOF
"offset" : 1048576,
"old_size" : 0,
"raw_size" : 33554432,
"size" : "→ 32.0M",
"size" : "-> 32.0M",
"old_padding" : 0,
"raw_padding" : 0,
"padding" : "→ 0B",
"padding" : "-> 0B",
"activity" : "create"
},
{
@ -408,10 +411,10 @@ EOF
"offset" : 34603008,
"old_size" : 0,
"raw_size" : 33554432,
"size" : "→ 32.0M",
"size" : "-> 32.0M",
"old_padding" : 0,
"raw_padding" : 0,
"padding" : "→ 0B",
"padding" : "-> 0B",
"activity" : "create"
}
]