data/CalendarSeries.cpp
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| 1 | #include "CalendarSeries.h" | ||
| 2 | |||
| 3 | #include "ICalendar.h" | ||
| 4 | #include "RecurrenceExpansion.h" | ||
| 5 | #include "RecurrenceRule.h" | ||
| 6 | |||
| 7 | #include <QTimeZone> | ||
| 8 | |||
| 9 | namespace CalendarSeries { | ||
| 10 | |||
| 11 | namespace { | ||
| 12 | |||
| 13 | 16 | QList<QDateTime> keepFrom(const QList<QDateTime> &values, const QDateTime &anchor, bool allDay, | |
| 14 | bool atOrAfter) { | ||
| 15 | 16 | QList<QDateTime> kept; | |
| 16 |
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19 | for (const QDateTime &value : values) { |
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6 | const bool after = allDay ? value.toUTC().date() >= anchor.toUTC().date() |
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3 | : value.toUTC() >= anchor.toUTC(); |
| 19 |
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3 | if (after == atOrAfter) |
| 20 | ✗ | kept.append(value); | |
| 21 | } | ||
| 22 | 16 | return kept; | |
| 23 | ✗ | } | |
| 24 | |||
| 25 | } // namespace | ||
| 26 | |||
| 27 | 111 | bool isRecurring(const CalendarEvent &event) { | |
| 28 |
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111 | return !event.rrule.trimmed().isEmpty() || !event.rdates.isEmpty(); |
| 29 | } | ||
| 30 | |||
| 31 | 12 | std::optional<int> occurrencesBefore(const CalendarEvent &master, const QDateTime &anchor) { | |
| 32 |
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12 | if (!master.isSchedulable() || !anchor.isValid() || anchor <= master.dtStart) |
| 33 | ✗ | return 0; | |
| 34 | 12 | CalendarEvent probe = master; | |
| 35 |
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12 | probe.exdates.clear(); // COUNT counts excluded occurrences too |
| 36 |
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12 | probe.rdates.clear(); |
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12 | const QDate from = master.allDay ? master.dtStart.toUTC().date() : master.dtStart.toLocalTime().date(); |
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12 | const QDate to = master.allDay ? anchor.toUTC().date() : anchor.toLocalTime().date(); |
| 39 | 12 | int count = 0; | |
| 40 |
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60 | for (const CalendarEvent &occurrence : expandEventsForDisplay({probe}, from, to, false)) { |
| 41 | // S106-145: a cut-off expansion (work cap) undercounts; COUNT | ||
| 42 | // arithmetic on it would be wrong, so the caller learns it is unknown. | ||
| 43 |
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38 | if (occurrence.partialRecurrence) |
| 44 | 2 | return std::nullopt; | |
| 45 |
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72 | if (master.allDay ? occurrence.dtStart.toUTC().date() < anchor.toUTC().date() |
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36 | : occurrence.dtStart.toUTC() < anchor.toUTC()) |
| 47 | 27 | ++count; | |
| 48 | 12 | } | |
| 49 | 10 | return count; | |
| 50 | 24 | } | |
| 51 | |||
| 52 | 4 | bool splittableAt(const CalendarEvent &master, const QDateTime &anchor) { | |
| 53 |
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4 | if (master.rrule.trimmed().isEmpty()) |
| 54 | ✗ | return true; | |
| 55 |
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4 | const RecurrenceRule rule = RecurrenceRule::parse(master.rrule); |
| 56 |
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4 | return !rule.valid || rule.count == 0 || occurrencesBefore(master, anchor).has_value(); |
| 57 | 4 | } | |
| 58 | |||
| 59 | namespace { | ||
| 60 | |||
| 61 | // S106-131: true when the rule's own end (UNTIL or COUNT) already lies | ||
| 62 | // before `anchor` — then "end before the anchor" must not move it later. | ||
| 63 | 6 | bool naturallyEndsBefore(const RecurrenceRule &rule, const CalendarEvent &master, | |
| 64 | const QDateTime &anchor) { | ||
| 65 |
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6 | if (rule.hasUntil()) { |
| 66 |
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1 | const QDateTime naive = rule.untilNaive(QTime(23, 59, 59)); |
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1 | if (!naive.isValid()) |
| 68 | ✗ | return false; | |
| 69 |
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1 | if (master.allDay || rule.untilIsDate()) |
| 70 | ✗ | return naive.date() < (master.allDay ? anchor.toUTC().date() : anchor.toTimeZone(master.dtStart.timeZone()).date()); | |
| 71 |
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1 | const QTimeZone zone = rule.untilIsUtc() ? QTimeZone::utc() : master.dtStart.timeZone(); |
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1 | return QDateTime(naive.date(), naive.time(), zone) < anchor; |
| 73 | 1 | } | |
| 74 |
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5 | if (rule.count > 0) { |
| 75 |
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4 | const auto before = occurrencesBefore(master, anchor); |
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4 | return before && *before >= rule.count; |
| 77 | } | ||
| 78 | 1 | return false; | |
| 79 | } | ||
| 80 | |||
| 81 | } // namespace | ||
| 82 | |||
| 83 | 6 | bool endBefore(CalendarEvent *master, const QDateTime &anchor) { | |
| 84 |
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6 | if (!master || !anchor.isValid() || !master->dtStart.isValid()) |
| 85 | ✗ | return false; | |
| 86 |
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12 | const bool afterStart = master->allDay ? anchor.toUTC().date() > master->dtStart.toUTC().date() |
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6 | : anchor.toUTC() > master->dtStart.toUTC(); |
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6 | if (!afterStart) |
| 89 | ✗ | return false; | |
| 90 |
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6 | if (!master->rrule.trimmed().isEmpty()) { |
| 91 |
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6 | RecurrenceRule rule = RecurrenceRule::parse(master->rrule); |
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6 | if (!rule.valid) |
| 93 | ✗ | return false; | |
| 94 |
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6 | if (!naturallyEndsBefore(rule, *master, anchor)) { |
| 95 | 4 | rule.count = 0; | |
| 96 | 4 | rule.until = master->allDay | |
| 97 |
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20 | ? anchor.toUTC().date().addDays(-1).toString(QStringLiteral("yyyyMMdd")) |
| 98 |
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16 | : anchor.toUTC().addSecs(-1).toString(QStringLiteral("yyyyMMdd'T'HHmmss'Z'")); |
| 99 |
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4 | master->rrule = rule.toString(); |
| 100 | } | ||
| 101 | 6 | } | |
| 102 |
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6 | master->exdates = keepFrom(master->exdates, anchor, master->allDay, false); |
| 103 |
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6 | master->rdates = keepFrom(master->rdates, anchor, master->allDay, false); |
| 104 | 6 | return true; | |
| 105 | } | ||
| 106 | |||
| 107 | 2 | CalendarEvent followingPart(const CalendarEvent &master, const QDateTime &anchor, | |
| 108 | const QString &newUid) { | ||
| 109 | 2 | CalendarEvent part = master; | |
| 110 | 2 | part.id = 0; | |
| 111 | 2 | part.uid = newUid; | |
| 112 | 2 | part.recurrenceId = {}; | |
| 113 | 2 | part.etag.clear(); | |
| 114 | 2 | part.resourceHref.clear(); | |
| 115 | 2 | part.resourceIcal.clear(); | |
| 116 | 2 | part.syncState.clear(); | |
| 117 |
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2 | const qint64 duration = master.dtEnd.isValid() ? master.dtStart.secsTo(master.dtEnd) : -1; |
| 118 |
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2 | if (master.allDay) { |
| 119 | ✗ | part.dtStart = QDateTime(anchor.toUTC().date(), QTime(0, 0), QTimeZone::utc()); | |
| 120 |
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2 | } else if (master.dtStart.timeSpec() == Qt::TimeZone) { |
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1 | part.dtStart = anchor.toTimeZone(master.dtStart.timeZone()); |
| 122 | } else { | ||
| 123 |
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1 | part.dtStart = master.dtStart.timeSpec() == Qt::LocalTime ? anchor.toLocalTime() : anchor.toUTC(); |
| 124 | } | ||
| 125 |
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2 | if (duration >= 0) |
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4 | part.dtEnd = master.allDay ? part.dtStart.addDays(master.dtStart.daysTo(master.dtEnd)) |
| 127 | 2 | : part.dtStart.addSecs(duration); | |
| 128 |
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2 | if (!master.rrule.trimmed().isEmpty()) { |
| 129 |
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2 | RecurrenceRule rule = RecurrenceRule::parse(master.rrule); |
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2 | if (rule.valid && rule.count > 0) { |
| 131 | // splittableAt() is checked first; an unknown count keeps the rule. | ||
| 132 |
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2 | if (const auto before = occurrencesBefore(master, anchor)) { |
| 133 | 2 | rule.count = qMax(1, rule.count - *before); | |
| 134 |
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2 | part.rrule = rule.toString(); |
| 135 | } | ||
| 136 | } | ||
| 137 | 2 | } | |
| 138 |
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2 | part.exdates = keepFrom(master.exdates, anchor, master.allDay, true); |
| 139 |
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2 | part.rdates = keepFrom(master.rdates, anchor, master.allDay, true); |
| 140 |
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2 | ICal::Component component = ICal::parseFirst(master.icalRaw, QStringLiteral("VEVENT")); |
| 141 |
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2 | if (!component.name.isEmpty()) { |
| 142 | ✗ | component.setPropertyValue(QStringLiteral("UID"), ICal::escapeText(newUid)); | |
| 143 | ✗ | component.removeProperties(QStringLiteral("RELATED-TO")); | |
| 144 | ✗ | ICal::Property related; | |
| 145 | ✗ | related.name = QStringLiteral("RELATED-TO"); | |
| 146 | ✗ | related.value = ICal::escapeText(master.uid); | |
| 147 | ✗ | component.appendProperty(related); | |
| 148 | ✗ | part.icalRaw = ICal::serialize(component); | |
| 149 | ✗ | } else { | |
| 150 | 2 | part.icalRaw.clear(); | |
| 151 | } | ||
| 152 | 2 | return part; | |
| 153 | 2 | } | |
| 154 | |||
| 155 | } // namespace CalendarSeries | ||
| 156 |