double integerFromString(const QString &str, int radix)
{
QByteArray ba = str.trimmed().toLatin1();
return integerFromString(ba.constData(), ba.size(), radix);
}
DateTimeComponents KDateTimeParser::parseDatePosix(const QString &inputString,
const QString &formatString,
const KCalendarSystem *calendar,
const KLocale *locale,
KLocale::DigitSet digitSet,
KLocale::DateTimeFormatStandard standard) const
{
QString str = inputString.simplified().toLower();
QString fmt = formatString.simplified();
int dd = -1;
int mm = -1;
int yy = 0;
bool parsedYear = false;
int ey = -1;
QString ee;
int dayInYear = -1;
int isoWeekNumber = -1;
int dayOfIsoWeek = -1;
int strpos = 0;
int fmtpos = 0;
int readLength; // Temporary variable used when reading input
bool error = false;
while (fmt.length() > fmtpos && str.length() > strpos && !error) {
QChar fmtChar = fmt.at(fmtpos++);
if (fmtChar != QLatin1Char('%')) {
if (fmtChar.isSpace() && str.at(strpos).isSpace()) {
strpos++;
} else if (fmtChar.toLower() == str.at(strpos)) {
strpos++;
} else {
error = true;
}
} else {
int j;
QString shortName, longName;
QChar modifierChar;
// remove space at the beginning
if (str.length() > strpos && str.at(strpos).isSpace()) {
strpos++;
}
fmtChar = fmt.at(fmtpos++);
if (fmtChar == QLatin1Char('E')) {
modifierChar = fmtChar;
fmtChar = fmt.at(fmtpos++);
}
switch (fmtChar.unicode()) {
case 'a': // Weekday Name Short
case 'A': // Weekday Name Long
error = true;
j = 1;
while (error && j <= calendar->d_ptr->daysInWeek()) {
shortName = calendar->weekDayName(j, KCalendarSystem::ShortDayName).toLower();
longName = calendar->weekDayName(j, KCalendarSystem::LongDayName).toLower();
if (str.mid(strpos, longName.length()) == longName) {
strpos += longName.length();
error = false;
} else if (str.mid(strpos, shortName.length()) == shortName) {
strpos += shortName.length();
error = false;
}
++j;
}
break;
case 'b': // Month Name Short
case 'h': // Month Name Short
case 'B': // Month Name Long
error = true;
j = 1;
while (error && j <= calendar->d_ptr->maxMonthsInYear()) {
// This may be a problem in calendar systems with variable number of months
// in the year and/or names of months that change depending on the year, e.g
// Hebrew. We really need to know the correct year first, but we may not have
// read it yet and will be using the current year instead
int monthYear;
if (parsedYear) {
monthYear = yy;
} else {
monthYear = calendar->year(QDate::currentDate());
}
if (calendar->locale()->dateMonthNamePossessive()) {
shortName = calendar->monthName(j, monthYear, KCalendarSystem::ShortNamePossessive).toLower();
longName = calendar->monthName(j, monthYear, KCalendarSystem::LongNamePossessive).toLower();
} else {
shortName = calendar->monthName(j, monthYear, KCalendarSystem::ShortName).toLower();
longName = calendar->monthName(j, monthYear, KCalendarSystem::LongName).toLower();
}
if (str.mid(strpos, longName.length()) == longName) {
mm = j;
strpos += longName.length();
error = false;
} else if (str.mid(strpos, shortName.length()) == shortName) {
mm = j;
strpos += shortName.length();
error = false;
}
++j;
}
break;
case 'd': // Day Number Long
case 'e': // Day Number Short
dd = calendar->dayStringToInteger(str.mid(strpos), readLength);
strpos += readLength;
error = readLength <= 0;
break;
case 'n':
// PosixFormat %n is Newline
// KdeFormat %n is Month Number Short
if (standard == KLocale::KdeFormat) {
mm = calendar->monthStringToInteger(str.mid(strpos), readLength);
strpos += readLength;
error = readLength <= 0;
}
// standard == KLocale::PosixFormat
// all whitespace already 'eaten', no action required
break;
case 'm': // Month Number Long
mm = calendar->monthStringToInteger(str.mid(strpos), readLength);
strpos += readLength;
error = readLength <= 0;
break;
case 'Y': // Year Number Long
case 'y': // Year Number Short
if (modifierChar == QLatin1Char('E')) { // Year In Era
if (fmtChar == QLatin1Char('y')) {
ey = calendar->yearStringToInteger(str.mid(strpos), readLength);
strpos += readLength;
error = readLength <= 0;
} else {
error = true;
j = calendar->eraList()->count() - 1; // Start with the most recent
while (error && j >= 0) {
QString subFormat = calendar->eraList()->at(j).format();
QString subInput = str.mid(strpos);
DateTimeComponents subResult = parseDatePosix(subInput, subFormat, calendar, locale, digitSet, standard);
if (!subResult.error) {
if (subResult.parsedYear) {
yy = subResult.year;
parsedYear = true;
error = false;
strpos += subResult.inputPosition;
} else if (!subResult.eraName.isEmpty() && subResult.yearInEra >= 0) {
ee = subResult.eraName;
ey = subResult.yearInEra;
error = false;
strpos += subResult.inputPosition;
}
}
--j;
}
}
} else {
yy = calendar->yearStringToInteger(str.mid(strpos), readLength);
strpos += readLength;
if (fmtChar == QLatin1Char('y')) {
yy = calendar->applyShortYearWindow(yy);
}
error = readLength <= 0;
if (!error) {
parsedYear = true;
}
}
break;
case 'C': // Era
error = true;
if (modifierChar == QLatin1Char('E')) {
j = calendar->eraList()->count() - 1; // Start with the most recent
while (error && j >= 0) {
shortName = calendar->d_ptr->m_eraList->at(j).name(KLocale::ShortName).toLower();
longName = calendar->eraList()->at(j).name(KLocale::LongName).toLower();
if (str.mid(strpos, longName.length()) == longName) {
strpos += longName.length();
ee = longName;
error = false;
} else if (str.mid(strpos, shortName.length()) == shortName) {
strpos += shortName.length();
ee = shortName;
error = false;
}
--j;
}
}
break;
case 'j': // Day Of Year Number
dayInYear = integerFromString(str.mid(strpos), 3, readLength);
strpos += readLength;
error = readLength <= 0;
break;
case 'V': // ISO Week Number
isoWeekNumber = integerFromString(str.mid(strpos), 2, readLength);
strpos += readLength;
error = readLength <= 0;
break;
case 'u': // ISO Day Of Week
dayOfIsoWeek = integerFromString(str.mid(strpos), 1, readLength);
strpos += readLength;
error = readLength <= 0;
break;
}
}
}
DateTimeComponents result;
result.error = error;
result.inputPosition = strpos;
result.formatPosition = fmtpos;
if (error) {
result.day = -1;
result.month = -1;
result.year = 0;
result.parsedYear = false;
result.eraName.clear();
result.yearInEra = -1;
result.dayInYear = -1;
result.isoWeekNumber = -1;
result.dayOfIsoWeek = -1;
} else {
result.day = dd;
result.month = mm;
result.year = yy;
result.parsedYear = parsedYear;
result.eraName = ee;
result.yearInEra = ey;
result.dayInYear = dayInYear;
result.isoWeekNumber = isoWeekNumber;
result.dayOfIsoWeek = dayOfIsoWeek;
}
return result;
}
