CMakeLists.txt and .cmake files of significant size
(more than 2 lines according to our check in tst_license.pl)
now have the copyright and license header.
Existing copyright statements remain intact
Task-number: QTBUG-88621
Change-Id: I3b98cdc55ead806ec81ce09af9271f9b95af97fa
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
Replace the current license disclaimer in files by
a SPDX-License-Identifier.
Files that have to be modified by hand are modified.
License files are organized under LICENSES directory.
Task-number: QTBUG-67283
Change-Id: Id880c92784c40f3bbde861c0d93f58151c18b9f1
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
To complement the existing addSecs / MSecs / etc., add a function
that takes any compatible std::chrono::duration.
QTime also features similar functions, but it's also "unique" in that
it uses modular arithmetic (it wraps around in case of "overflow").
I'm not so sure that adding durations to a QTime object therefore
makes sense, and I'm not doing it in this patch.
[ChangeLog][QtCore][QDate] Added addDuration().
[ChangeLog][QtCore][QDateTime] Added addDuration().
Change-Id: I02aa37ff024d7f56fa976dc8f4f73523bdba8d94
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
In C++20, QDateTime is a direct equivalent of a sys_time<milliseconds>
time point. (Before, it might not have been, because system_clock before
C++20 was not guaranteed to be tracking Unix time, AKA UTC time without
leap seconds.) To be specific, sys_time<milliseconds> corresponds to
a QDateTime using the Qt::UTC timespec.
This patch:
1) adds named constructors taking time_points:
* a generic one taking any time_point convertible (via clock_cast) to
a system_clock (this obviously includes system_clock, but also e.g.
utc_clock)
* another couple taking local_time, interpreted as a duration from
1/1/1970 in local time.
2) adds a named constructor from zoned_time (i.e. a sys_time + a
timezone), that we can easily support via QTimeZone.
3) add conversion functions towards sys_time, matching the existing
to(M)SecsSinceEpoch() functions.
[ChangeLog][QtCore][QDateTime] QDateTime can now be constructed
from std::chrono::time_point objects (including local_time), as
well as from std::chrono::zoned_time objects. Moreover, they
can be converted to std::chrono::time_point using system_clock
as their clock.
Change-Id: Ic6409bde43bc3e745d9df6257e0a77157472352d
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
std::chrono::year_month_day and related classes offer very
convenient to specify dates.
This patch adds implicit constructors to QDate to support this
convenience, e.g.:
// YYYY-MM-DD, DD-MM-YYYY, MM-DD-YYYY formats:
QDate d1 = 1985y / December / 8;
QDate d2 = 8d / December / 1985;
QDate d3 = December / 8d / 1985;
// Indexed weekday:
QDate d4 = 2000y / January / Monday[0];
QDate d5 = 2000y / January / Monday[last];
and so on.
These are all implemented using the conversion from the std
calendaring classes to sys_days. Conversions between sys_days
and QDate are also added, since they're basically "for free".
I don't expect "ordinary" users to stumble upon it, but it's
worthy mentioning that std::chrono::year *does* have a year
zero (hence, year_month_day in year 0 or below are offset
by one with the corresponding QDate). I've left a note
in the documentation.
[ChangeLog][QtCore][QDate] QDate (and therefore QDateTime)
is now constructible using the year/month/day/week classes
available in the std::chrono library. Moreover, it now
features conversions from and to std::chrono::sys_days.
Change-Id: I2a4f56423ac7d1469541cbb6a278a65b48878b4a
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
QDateTime represents a specific point in time, so arithmetic
with durations makes perfect sense.
Moreover, we can finally equip QDateTime with a subtraction
operator, to calculate the duration between two QDateTime
objects.
[ChangeLog][QtCore][QDateTime] QDateTime now supports arithmetic
between QDateTime objects and std::chrono::duration objects.
A duration can be added to or subtracted from a QDateTime, yielding
another QDateTime; and two QDateTime objects can be subtracted
from each other, yielding the duration between them.
Change-Id: I656419f3bb9418c49f0e2fd0800c3dbaaf6aff32
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
A time_zone represents a timezone identified by its IANA ID. This
allows for a straightforward conversion to QTimeZone.
[ChangeLog][QtCore][QTimeZone] QTimeZone can now be constructed
from a std::chrono::time_zone pointer.
Change-Id: I093d9fc2e989475d30730a9dcdef491903a2aeb2
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Before the patch we tried to create a java Locale object by passing the
human-readable language, territory and variant strings. However, the
Locale constructor accepts ISO-defined codes.
Fix it by using a factory method Locale.forLanguageTag() [0] that
constructs a Java Locale object based on BCP 47 tag.
[0]: https://developer.android.com/reference/java/util/Locale#forLanguageTag(java.lang.String)
Fixes: QTBUG-101460
Pick-to: 6.3 6.2 5.15
Change-Id: If414c66cf0e5b7e8299ffc3a6038b6f9eb79d5ec
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>
The ASN.1 parser for a date-time had to check the date-time string was
all digits to catch the case of a sign in the month field, which used
to be accepted when it should not be. That bug has now been fixed, so
remove the work-around and add a second date-time test-case, renaming
(and modernising) the existing one for consistency.
Task-number: QTBUG-84349
Change-Id: I649c5129312b6865af08b22ba6893cb4e29243f8
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
The zone name was reported if isValid() failed, but not if
isTimeZoneIdAvailable(), where it also proved useful in uncovering
ICU's use of over-long zone name components.
Change-Id: I4b3b65b1a4a338b638c01fc7ad47294118ee0efc
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
The exception was previously limited to Android, but I now find that
ICU has the same over-long names; it seems likely that's where Android
gets them. Also update the link to the theory page from the TZ DB, as
it now has an official home on www.iana.org.
Task-number: QTBUG-99747
Pick-to: 6.3 6.2
Change-Id: I9af67426d15609dfaf5f335405ceb1218fcf40ff
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
In Qt 7 32-bit builds, the ShortData will be larger than the
d-pointer.
So don't swap() the d-pointer, but a) delegate to Data to swap itself
and b) swap the ShortData there, adding a static_assert in the .cpp
file that triggers when the assumption that ShortData is always at
least as large as a pointer is violated.
Found while porting away from overly-generic qSwap(), so done that,
too.
Task-number: QTBUG-97601
Pick-to: 6.3 6.2
Change-Id: I5139da58d99e9491a582ff2cb2f817cd96952044
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
QDateTimeEdit's default constructor instantiates the start of
1752-09-14 as its default earliest time; however Friedeman has seen
this triggering an assertion. The QDTE tests should be picking that up
anyway, but let's overtly test it in QDate's startOfDay testing, too.
Change-Id: Ifae87f2695ac3a7993c173a7c21809c87d5daa71
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Bring out the asymmetry between date and time more clearly; when date
is valid, an invalid time is ignored in favor of QTime(0, 0). At the
same time, eliminate an un-needed variable from the code that
implements this special handling. (Left over from when the QTime was
passed by const ref, rather than by value.)
Change-Id: I81d8a9026cbb7887a8c638a2761b3db54c088af7
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
It can now use startOfDay()/endOfDay() for the end-points of its
search range; and it should check transit is not empty before
dereferencing transits.at(0).
Change-Id: Ib1568f4d8d6ce301d601071bb58185be906c631a
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
- ICU is not supported by backend.
System supports only a simple named UTC time zone implementation(see QUtcTimeZonePrivate)
Task-number: QTBUG-99123
Pick-to: 6.2 6.3
Change-Id: I4a87fc3d5484d75d55890bf88d012955e5048a0b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The loop used an int counter that was initialized from a size_t,
provoking a warning from MSVC. Since the indexing is irrelevant in any
case, use a ranged-for loop. Since the loop was formerly in decreasing
index order, reverse the table being iterated so that entries remain
in their prior order.
Change-Id: I79b93c5a3f39a502b0cae83215b8e3665d0e17f5
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
The offset fields for tst_QTimeZone::specificTransition() had a
comment claiming they are in minutes; they are in fact in seconds, so
fix that. At the same time, Moscow hasn't had a time-zone change since
2017, so the end-date for one of the test intervals can be nudged a
little closer to the present without harm.
Change-Id: I66822cb758f7e00d6added801466a6745be3e31a
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
While investigating an assertion failure I noticed that the existing
tests didn't even exercise these methods for local time or zone time.
Of course, we can't robustly test these time-specs, due to vagueries
of offset details and zone availability, but we can at least verify
that they return date-times on the specified date. Add a test-case for
the start of 1900, on which the assertions were first seen; it is the
earliest moment representable with tm_year >= 0, after all.
One of these tests fails on 6.2 but the fix for that (as opposed to
the the assertion) requires 6.3's improvements to the handling of
time_t's fuller range - too risky a change to pick back to 6.2.
Pick-to: 6.3
Task-number: QTBUG-99747
Change-Id: I98f5d7850a701972b2d8ea2ce203a2b3e7071354
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
When int is 32-bit, 0x80000000L is int-min, and (consequently)
negating it makes no difference, so MSVC warns about this. Instead of
using an L suffix, wrap the constant in Q_INT64_C(). Do the same for
similar large constants in the same block.
Pick-to: 6.2 6.3
Change-Id: Ib371b932792f170ab7db2e472a4283df3a205af3
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
The QDateTimeData &d it's passed is a copy that's about to be
modified; before we do so, we haven't detached so its internals have a
ref-count of two, contradicting an assertion in the non-const
Data::operator->(); so just directly access d.d->m_timezone, since we
know that spec == TimeZone implies !isShort().
Added test that triggered the assertion and now doesn't.
Fixes: QTBUG-99668
Pick-to: 6.3 6.2 6.2.3 5.15
Change-Id: I07321ad91be5adce524be18e4ab82eee7110dc6a
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
tst_QDate::startOfDay_endOfDay_data() naively assumed some zones would
exist. They don't on QNX, apparently.
Change-Id: I3a364964d03f59f5869b4b7639f089dd303180b1
Reviewed-by: Andreas Buhr <andreas.buhr@qt.io>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
I was briefly confused about why an Etc/GMT+3 test was using GMT as
localtime. Fortunately I worked it out before mis-"correcting" it.
Change-Id: I7b0473c7d3974ef186e1170cf4999aca52aaaf45
Reviewed-by: Andreas Buhr <andreas.buhr@qt.io>
On QNX, tst_QDateTime::fromStringStringFormat_localTimeZone_data()
failed to set up any rows for the data-driven tests to fetch, leading
to an assertion failure on trying to fetch a row.
Change-Id: I7c405b1142a8cb6d445b501ea44fe3d440570cf3
Reviewed-by: Andreas Buhr <andreas.buhr@qt.io>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
This lets it avoid a two-digit year that would clash with month or day.
That shall make fixing up system locale date formatting run cleaner.
Add a test for QGregorianCalendar's two extensions.
Change-Id: I77083ff9d5e4035763250904a59fcf416286545b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Tests of QTimeZone::dispayName() were burying most of what was
interesting in the variations among them by repetition of a large
amount of boilerplate. Package the repetition in a macro so that
the differences between checks are more evident.
Change-Id: I23bcafab641b7d3bed50248ba5313250c150d30c
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Use the Q_INT64_C() macro and qint64()-as-function instead of C-style
casts.
Change-Id: I9d169715da96a49898e9c9e2a6d3ee5182e1d91c
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Where std::numeric_limits<...>::min() is used used as invalid value
for an API return, save it as a named constant so that the comparisons
are against an informative name, rather than leaving the reader to
guess the significance of the min-value.
Change-Id: Ia99c75e21856f65cb4494120d05eed36f5fc2d50
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This was handled correctly when the backend supplies transitions
bracketing the time in question, but the fallback code tried to use
the DST offset at the time with larger offset from UTC; this did not
work when the gap was due to a change in standard time. Discovered by
ANS1 parsing of a date-time with two-digit year, for which the
date-time parser tried to use 1921-05-01T00:00 local time when filling
in the fields it had parsed; but, when run in Europe/Helsinki, there
is no such time due to the 20m 11s skipped when joining EET from the
prior local solar mean time.
Correct the calculation to use the actual change in offset from UTC,
as used in the (far better tested) between-transitions branch of the
code, rather than the DST offset after the transition.
Add a test-case based on the ASN.1 certificate date whose parsing
revealed the issue. Although it seems nothing in Coin can reproduce
the issue, the reporter has verified that the test does indeed fail on
the system where the bug was found and the fix does fix it.
Fixes: QTBUG-96861
Pick-to: 6.2
Change-Id: I12b02bad01daca2073d1a356452cd573684aa688
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This amends commit 68f19fb630 to only
consume one 't' from the format string, to match qlocale.cpp's
serialization of time-zone specifiers, which only consumes one, so
will repeat the time-zone specifier as many times as unquoted t
appears in the format. It's hard to imagine why anyone would want this
behavior, but it's what our serialization has always done and parsing
should match serialization.
Add test-cases for double time-zone specifier.
Delete a lie in the process.
Task-number: QTBUG-95966
Change-Id: I574896040a74085dee89a4fefd8384be44ad827b
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
It is no longer handled separately from Android.
This effectively reverts commit 6d50f746fe
Change-Id: Ic2d75b8c5a09895810913311ab2fe3355d4d2983
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>
The existing a, ap, A and AP specifiers all force the case of the
formatted am/pm indicator. The indicators returned by QLocale's
amText() and pmText() methods are those given in CLDR, with no case
coercion. Application writers may reasonably want these strings used
verbatim, rather than having to chose a case and impose it on the
locale's indicators, in defiance of national custom. For example,
while en_US uses upper-case indicators by default, cs_CZ uses
lower-case ones. An application author writing a time format has been
forced to chose which of these locales to be wrong in.
Add support for aP and Ap specifiers, whose mixed case indicates that
the locale's case is to be respected. Amend an existing test-case of
tst_QLocale's formatDateTime() that used Ap (expecting, of course, an
upper-case indicator followed by a stray p) to now expect the
locale-appropriate-cased indicator. Extend formatTime() to test cases
using aP and Ap, to illustrate the difference between en_US and cs_CZ.
Rework QDateTimeParser to also support the new format specifier. This
required expanding its Case enum, used by the getAmPmText() method,
which was formerly shared with QDateTimeEditPrivate; however, as that
class no longer makes any reference to this method, it and the enum
can be made private, allowing a systematic clean-up of their use.
Added test-cases for both serialization and parsing; and amended some
existing parsing tests to verify am/pm indicators are matched
case-insensitively.
[ChangeLog][QtCore][Important Behavior Changes] Time formats used by
QLocale, QTime and QDateTime's parsing and serialization now recognize
'aP' and 'Ap' format specifiers to obtain an AM/PM indicator, using
the locale-appropriate case for the indicator, where previously the
author of a time format had to pick a case that might conflict with
the user's locale. For QTime and QDateTime the locale is always C,
whose indicators are uppercase. For QLocale, the case will now match
that of amText() or pmText(). Previously, 'aP' would have been read as
a lower-case indicator followed by a 'P' and 'Ap' as an upper-case
indicator followed by a 'p'. The 'P' or 'p' will now be treated as
part of the format specifier: if the prior behavior is desired, either
use 'APp' or 'apP' as format specifier or quote the 'p' or 'P' in the
format. The prior 'a', 'ap', 'A' and 'AP' specifiers are otherwise
unaffected.
Fixes: QTBUG-95790
Change-Id: I26603f70f068e132b5c6aa63214ac8c1774ec913
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Various QDateTime tests relating to transitions
* used a nomenclature that made them confusing to thing about; and
* expected identically-initiallized variables to behave differently.
The latter, naturally, lead to "expected fail" tests.
Rewrote the tests to get the date-times they want to test at by means
that avoid the ambiguities inherent in QDateTime's lack of a way to
distinguish the two passes through the repeated hour in a fall-back
(QTBUG-79923) and added commented-out tests indicating what should be
true once that ambiguity is resolved. Verified the DST status is as
expected in the cases where that's the correct distinction between
date-times with the same date and time. Renamed various things to
(hopefully) make them more intelligible.
In the process, purged some leading 0s from numbers in code.
Fixes: QTBUG-68936
Change-Id: Id7a348995238b70dcb81a96edb8a3fa5315f86fa
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
In my prior attempt to handle the last second of 1969, I forgot that
the QTime we're describing is a local time, so whether *it* thinks
we're at the last second of the day is beside the point. Fortunately,
preceding second should get -2 as return if mktime()'s initial -1
actually meant the last second of 1969, so we can test via that, after
a cheap pre-test to save doing this too often (albeit we only even
attempt the check if mktime() returned -1 in any case).
Restructured qt_mktime() in the process to deal with the error case's
early return promptly instead of doing it in an else clause. Also
repackage the calls to mktime to isolate various quirks and simplify
the logic in qt_mktime(). This also prepares for setting tm_isdst as a
hint when we know when we came from, in massageAdjustedDateTime().
Refined one test, added two more test cases. These didn't fail before
this fix, but a judiciously-placed qDebug() in testing revealed that
localMSecsToEpochMSecs() resorted to its fall-back handling - as if
the date-time were outside the time_t range - due to qt_mktime()
failing, for these test-cases (and several others). This fix evades
that fall-back behavior; a judiciously-placed qDebug() shows none of
our test-cases now fail callMkTime().
Change-Id: I11aa5015191dc4a565c28482307f7bc341c207e7
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
In setMSecsSinceEpoch(), the CET end-of-time is invalid anyway, so a
whole block (rather than just one sub-test of it) was irrelevant for
the max-qint64 test case (aside from verifying cet *is* invalid).
Split out to a separate test the part of a data-driven test that was
the same for all data rows. Reworked several ill-advised ways to use
QSKIP().
Change-Id: If757d3e722c81fc42a87256125ceef605b6bfb64
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
When adding an offset from UTC, arithmetic may overflow. Likewise
when combining a date and time (that have been offset for UTC). Also
check the return from epochMSecsToLocalTime(), as it can fail; and pay
attention to the status stored by setDateTime(), to notice when it
hits an overflow. Fixed some tests that only passed because we
neglected these checks. Extended a test to check we detect overflow in
a couple of cases close to the extremes.
Change-Id: I127a670302f94a07bb9b087b1b9c608b7c08785c
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Øystein Heskestad <oystein.heskestad@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
QDateTime has long followed a convention of ignoring what it knows
about time-zone transitions before the epoch. This produces unhelpful
artefacts (such as an ahistorical spring-forward skipping the first
hour of 1970 in Europe/London, which was in permanent DST at the time)
and complicates the code. It documented that DST transitions were
ignored, but in fact ignored all transitions prior to 1970 and simply
assumed that the current time-zone properties (half a century later)
applied to all times before 1970.
This appears to be based on the fact that the MS APIs using time_t all
limit their range to after 1970. Given that we have to resort to
"other means" to deal with times after the end of time_t, when it's
only 32-bit (and after year 3000, on MS systems), we have the means in
place to handle times outside the range supported by the system APIs,
so have no need to mimic this restriction. (Those means are not as
robust as we might want, but they are less bad than assuming that the
present zone properites were always in effect prior to 1970.) On
macOS, the time_t functions only reach back to the start of 1900; it
reaches to the end of its time_t range and Linux covers the whole
range. Given this variety, the range is now auto-detected the first
time it is needed (based on some quick and dirty heuristics).
Various CET-specific tests now need adjustments in tests of times
before the introduction of time-zones (when they are in fact on LMT,
not CET). The systemZone() test of QTimeZone can now restore its
pre-zone test cases. Various comments on tests needed updates.
[ChangeLog][QtCore][QDateTime] Available time-zone information is now
used to its full extent, where previously QDateTime used LocalTime's
current standard time for all dates before 1970. Where we have
time-zone information, it is considered reliable, so we use it. This
changes the "best efforts" used for times outside the range supported
by the system APIs, in most cases giving less misleading results.
Fixes: QTBUG-80421
Change-Id: I7b1df7622dd9be244b0238ed9c08845fb5b32215
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Previously, if multiplication overflowed when trying to set the date
and time of a formerly short-form QDateTime, its status didn't get set
to reflect the failed validity check. Added a test that now correctly
detects that it's produced an invalid date-time on overflow, where
previously it produced a wrong valid date-time.
Change-Id: Id46ca34d1e32e9b9b0630f3723cefd1c13b5761e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This reverts commit ec8808c302 but
retains its test, as the problem it fixed is now solved by having the
TZ backend validate the ID it's passed, so that it now only accepts
valid POSIX zone-descriptions and valid IANA IDs. The former were
being excluded by this check.
Amended a POSIX test to fail with the check in place; it passes now.
Change-Id: I0d5e8c6e0a315ac2509f3d23bebb52aede8f79d0
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Robert Löhning <robert.loehning@qt.io>
Previously, an apparent POSIX rule would be saved and any defects in
it would only be discovered when trying to use it to generate
transitions. Instead, check that it has the right form during the
initial parsing of its data.
In the process, since checking for DST in the process is trivial,
implement a long-standing TODO to cache hasDaylightTime()'s
answer. The array it scanned was in any case being scanned during
construction, so detecting DST in init()'s scan is trivial; and its
failure to check the POSIX rule mean it failed to notice when zones
entirely specified by a POSIX rule have DST.
Adapt a test using a POSIX-only rule to verify it does know the zone
has DST; it did not, before this change.
Change-Id: I690c013d3331600f7348dae61c35d41e5599da70
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The description necessarily has fake transitions at start and end of
the year, potentially outside the year. These transitions should not
be reported by QTzTimeZonePrivate as transitions, although its data()
must find a "transition" whose data it can use (as in the permanent
standard time case, which could potentially be represented the same
way, although there's a saner way to do so, that the code already
handles) to report the zone's properties.
In the process, fix (and make more straightforward) the convoluted
decision-making code that was deciding which transitions to include in
the returned list. It was assuming invalidMSecs() would be set as the
atMSecsSinceEpoch of a transition, although this is computed in a way
that makes that value most unlikely, even when the result is invalid.
It also rather confusingly mixed < 0 tests as tests for overflow with
the one < 0 test that's about ignoring DST before 1970. Also added
comments to clarify some of what's going on there.
Expanded a recently-added test of a permanent DST zone to verify this
now works correctly.
Change-Id: Ia8d98f433fb1e479dba5479220a62196c30f0244
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
There are two formats for such fields: one with a J prefix on a number
in the range 1 to 365, the other with no prefix and a range from 0 to
365. The code mistakenly treated the latter as if its range were from
1 to 366. The J-form doesn't count Feb 29th, so March always starts on
day 60; the code tried to take that into account, but adjusted in the
wrong direction (and this mislead me, in a recent partial fix, into a
fence-post error).
Add a test-case based on the Africa/Casablanca POSIX rule seen on RHEL
8.2, which tripped over the off-by-one error without a J prefix. This
incidentally also tests the J case.
Change-Id: I692ca511e5c960f91a6c21073d3b2f037f5e445f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
A POSIX rule's transition time is allowed an hour in the range from
-137 to 137; in particular, a negative hour is allowed, and used by
some Greenland zones using Europe's time-of-transition which, as they
are more than two hours west of Greenwich, happens before midnight.
This means the time of transition can't be represented by a QTime(),
so propagate the int that represents it to the code that consumes it;
and treat parsing failure as an error rather than "correcting" it - if
the transition time is given, it must be valid.
Changed tst_QTimeZone::isTimeZoneIdAvailable()'s verification of
validity to report the name of the zone it thought was invalid.
(A later change, validating POSIX rules, caued this to fail for
America/Nuuk without the present fix.)
Change-Id: I5c9127ac34d878554dd0aca1c1c7338c7e0e1c28
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
If the ID isn't even valid, don't waste cycles trying to make sense of
it as identifying a time-zone.
Add test of an invalid ID that provoked an integer overflow on trying
to parse it as a POSIX zone specification.
Fixes: QTBUG-92842
Change-Id: Ib80bbb88c11c0484ce0358acabbdc25c5bd8e0b3
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
