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time-util: extract parse_calendar_date() from sysupdate

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Move the YYYY-MM-DD date parsing and validation logic from
sysupdate-resource.c into a shared parse_calendar_date() function
in time-util, so it can be reused by other subsystems.
This commit is contained in:
Dylan M. Taylor
2026-03-18 09:39:06 -04:00
parent fb2cf9f557
commit 770958e24a
4 changed files with 59 additions and 17 deletions
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src/test/test-time-util.c
+26
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@@ -1281,4 +1281,30 @@ static int intro(void) {
return EXIT_SUCCESS;
}
TEST(parse_calendar_date) {
usec_t usec;
/* Valid dates */
ASSERT_OK(parse_calendar_date("2000-01-01", &usec));
ASSERT_OK(parse_calendar_date("1970-01-01", &usec));
ASSERT_EQ(usec, 0u); /* epoch */
ASSERT_OK(parse_calendar_date("2000-02-29", &usec)); /* leap year */
/* NULL ret is allowed (validation only) */
ASSERT_OK(parse_calendar_date("2000-06-15", NULL));
/* Non-normalized dates */
ASSERT_ERROR(parse_calendar_date("2023-02-29", &usec), EINVAL); /* not a leap year */
ASSERT_ERROR(parse_calendar_date("2023-04-31", &usec), EINVAL); /* April has 30 days */
ASSERT_ERROR(parse_calendar_date("2023-13-01", &usec), EINVAL); /* month 13 */
ASSERT_ERROR(parse_calendar_date("2023-00-01", &usec), EINVAL); /* month 0 */
/* Malformed input */
ASSERT_ERROR(parse_calendar_date("", &usec), EINVAL);
ASSERT_ERROR(parse_calendar_date("not-a-date", &usec), EINVAL);
ASSERT_ERROR(parse_calendar_date("2023-06-15T00:00:00", &usec), EINVAL); /* trailing time */
ASSERT_ERROR(parse_calendar_date("2023/06/15", &usec), EINVAL); /* wrong separator */
ASSERT_ERROR(parse_calendar_date("06-15-2023", &usec), EINVAL); /* wrong order */
}
DEFINE_TEST_MAIN_WITH_INTRO(LOG_INFO, intro);