| 139 | } // namespace |
| 140 | |
| 141 | ParsedRule parseRule(const QString& rrule) |
| 142 | { |
| 143 | ParsedRule rule; |
| 144 | const QStringList parts = rrule.trimmed().split(';', Qt::SkipEmptyParts); |
| 145 | QString byDay; |
| 146 | |
| 147 | for (const QString& part : parts) { |
| 148 | const int eq = part.indexOf('='); |
| 149 | if (eq < 0) |
| 150 | continue; |
| 151 | const QString key = part.left(eq).trimmed().toUpper(); |
| 152 | const QString val = part.mid(eq + 1).trimmed(); |
| 153 | |
| 154 | if (key == "FREQ") { |
| 155 | const QString f = val.toUpper(); |
| 156 | if (f == "DAILY") |
| 157 | rule.freq = ParsedRule::Freq::Daily; |
| 158 | else if (f == "WEEKLY") |
| 159 | rule.freq = ParsedRule::Freq::Weekly; |
| 160 | else if (f == "MONTHLY") |
| 161 | rule.freq = ParsedRule::Freq::Monthly; |
| 162 | } else if (key == "INTERVAL") { |
| 163 | bool ok = false; |
| 164 | const int n = val.toInt(&ok); |
| 165 | if (ok && n > 0) |
| 166 | rule.interval = n; |
| 167 | } else if (key == "BYDAY") { |
| 168 | byDay = val; |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | if (!rule.isValid()) |
| 173 | return rule; |
| 174 | |
| 175 | if (rule.freq == ParsedRule::Freq::Monthly) { |
| 176 | // BYDAY for MONTHLY is a single ordinal weekday, e.g. "1SU" or "-1WE". |
| 177 | const QString token = byDay.trimmed().toUpper(); |
| 178 | int idx = 0; |
| 179 | bool negative = false; |
| 180 | if (token.startsWith('-')) { |
| 181 | negative = true; |
| 182 | idx = 1; |
| 183 | } else if (token.startsWith('+')) { |
| 184 | idx = 1; |
| 185 | } |
| 186 | int digitsEnd = idx; |
| 187 | while (digitsEnd < token.size() && token.at(digitsEnd).isDigit()) |
| 188 | ++digitsEnd; |
| 189 | if (digitsEnd > idx) { |
| 190 | int ord = token.mid(idx, digitsEnd - idx).toInt(); |
| 191 | if (negative) |
| 192 | ord = -ord; |
| 193 | rule.monthlyOrdinal = ord; |
| 194 | rule.monthlyWeekday = weekdayFromCode(token.mid(digitsEnd)); |
| 195 | } |
| 196 | if (rule.monthlyWeekday == 0 || rule.monthlyOrdinal == 0) |
| 197 | rule.freq = ParsedRule::Freq::Invalid; |
| 198 | return rule; |