/*
Parse all the date formats that Firefox can.
The official format is:
expires=ddd(d)?, dd-MMM-yyyy hh:mm:ss GMT
But browsers have been supporting a very wide range of date
strings. To work on many sites we need to support more then
just the official date format.
For reference see Firefox's PR_ParseTimeStringToExplodedTime in
prtime.c. The Firefox date parser is coded in a very complex way
and is slightly over ~700 lines long. While this implementation
will be slightly slower for the non standard dates it is smaller,
more readable, and maintainable.
Or in their own words:
"} // else what the hell is this."
*/
static QDateTime parseDateString(const QByteArray &dateString)
{
QTime time;
// placeholders for values when we are not sure it is a year, month or day
int unknown[3] = {-1, -1, -1};
int month = -1;
int day = -1;
int year = -1;
int zoneOffset = -1;
// hour:minute:second.ms pm
QRegExp timeRx(QLatin1String("(\\d{1,2}):(\\d{1,2})(:(\\d{1,2})|)(\\.(\\d{1,3})|)((\\s{0,}(am|pm))|)"));
int at = 0;
while (at < dateString.length()) {
#ifdef PARSEDATESTRINGDEBUG
qDebug() << dateString.mid(at);
#endif
bool isNum = isNumber(dateString[at]);
// Month
if (!isNum
&& checkStaticArray(month, dateString, at, months, sizeof(months)- 1)) {
++month;
#ifdef PARSEDATESTRINGDEBUG
qDebug() << "Month:" << month;
#endif
at += 3;
continue;
}
// Zone
if (!isNum
&& zoneOffset == -1
&& checkStaticArray(zoneOffset, dateString, at, zones, sizeof(zones)- 1)) {
int sign = (at >= 0 && dateString[at - 1] == '-') ? -1 : 1;
zoneOffset = sign * zoneOffsets[zoneOffset] * 60 * 60;
#ifdef PARSEDATESTRINGDEBUG
qDebug() << "Zone:" << month;
#endif
at += 3;
continue;
}
// Zone offset
if (!isNum
&& (zoneOffset == -1 || zoneOffset == 0) // Can only go after gmt
&& (dateString[at] == '+' || dateString[at] == '-')
&& (at == 0
|| isWhitespace(dateString[at - 1])
|| dateString[at - 1] == ','
|| (at >= 3
&& (dateString[at - 3] == 'g')
&& (dateString[at - 2] == 'm')
&& (dateString[at - 1] == 't')))) {
int end = 1;
while (end < 5 && dateString.length() > at+end
&& dateString[at + end] >= '0' && dateString[at + end] <= '9')
++end;
int minutes = 0;
int hours = 0;
switch (end - 1) {
case 4:
minutes = atoi(dateString.mid(at + 3, 2).constData());
// fall through
case 2:
hours = atoi(dateString.mid(at + 1, 2).constData());
break;
case 1:
hours = atoi(dateString.mid(at + 1, 1).constData());
break;
default:
at += end;
continue;
}
if (end != 1) {
int sign = dateString[at] == '-' ? -1 : 1;
zoneOffset = sign * ((minutes * 60) + (hours * 60 * 60));
#ifdef PARSEDATESTRINGDEBUG
qDebug() << "Zone offset:" << zoneOffset << hours << minutes;
#endif
at += end;
continue;
}
}
// Time
if (isNum && time.isNull()
&& dateString.length() >= at + 3
&& (dateString[at + 2] == ':' || dateString[at + 1] == ':')) {
// While the date can be found all over the string the format
// for the time is set and a nice regexp can be used.
int pos = timeRx.indexIn(QLatin1String(dateString), at);
if (pos != -1) {
QStringList list = timeRx.capturedTexts();
int h = atoi(list.at(1).toLatin1().constData());
int m = atoi(list.at(2).toLatin1().constData());
int s = atoi(list.at(4).toLatin1().constData());
int ms = atoi(list.at(6).toLatin1().constData());
if (h < 12 && !list.at(9).isEmpty())
if (list.at(9) == QLatin1String("pm"))
h += 12;
time = QTime(h, m, s, ms);
#ifdef PARSEDATESTRINGDEBUG
qDebug() << "Time:" << list << timeRx.matchedLength();
#endif
at += timeRx.matchedLength();
continue;
}
}
// 4 digit Year
if (isNum
&& year == -1
&& dateString.length() >= at + 3) {
if (isNumber(dateString[at + 1])
&& isNumber(dateString[at + 2])
&& isNumber(dateString[at + 3])) {
year = atoi(dateString.mid(at, 4).constData());
at += 4;
#ifdef PARSEDATESTRINGDEBUG
qDebug() << "Year:" << year;
#endif
continue;
}
}
// a one or two digit number
// Could be month, day or year
if (isNum) {
int length = 1;
if (dateString.length() > at + 1
&& isNumber(dateString[at + 1]))
++length;
int x = atoi(dateString.mid(at, length).constData());
if (year == -1 && (x > 31 || x == 0)) {
year = x;
} else {
if (unknown[0] == -1) unknown[0] = x;
else if (unknown[1] == -1) unknown[1] = x;
else if (unknown[2] == -1) unknown[2] = x;
}
at += length;
#ifdef PARSEDATESTRINGDEBUG
qDebug() << "Saving" << x;
#endif
continue;
}
// Unknown character, typically a weekday such as 'Mon'
++at;
}
// Once we are done parsing the string take the digits in unknown
// and determine which is the unknown year/month/day
int couldBe[3] = { 0, 0, 0 };
int unknownCount = 3;
for (int i = 0; i < unknownCount; ++i) {
if (unknown[i] == -1) {
couldBe[i] = ADAY | AYEAR | AMONTH;
unknownCount = i;
continue;
}
if (unknown[i] >= 1)
couldBe[i] = ADAY;
if (month == -1 && unknown[i] >= 1 && unknown[i] <= 12)
couldBe[i] |= AMONTH;
if (year == -1)
couldBe[i] |= AYEAR;
}
// For any possible day make sure one of the values that could be a month
// can contain that day.
// For any possible month make sure one of the values that can be a
// day that month can have.
// Example: 31 11 06
// 31 can't be a day because 11 and 6 don't have 31 days
for (int i = 0; i < unknownCount; ++i) {
int currentValue = unknown[i];
bool findMatchingMonth = couldBe[i] & ADAY && currentValue >= 29;
bool findMatchingDay = couldBe[i] & AMONTH;
if (!findMatchingMonth || !findMatchingDay)
continue;
for (int j = 0; j < 3; ++j) {
if (j == i)
continue;
for (int k = 0; k < 2; ++k) {
if (k == 0 && !(findMatchingMonth && (couldBe[j] & AMONTH)))
continue;
else if (k == 1 && !(findMatchingDay && (couldBe[j] & ADAY)))
continue;
int m = currentValue;
int d = unknown[j];
if (k == 0)
qSwap(m, d);
if (m == -1) m = month;
bool found = true;
switch(m) {
case 2:
// When we get 29 and the year ends up having only 28
// See date.isValid below
// Example: 29 23 Feb
if (d <= 29)
found = false;
break;
case 4: case 6: case 9: case 11:
if (d <= 30)
found = false;
break;
default:
if (d > 0 && d <= 31)
found = false;
}
if (k == 0) findMatchingMonth = found;
else if (k == 1) findMatchingDay = found;
}
}
if (findMatchingMonth)
couldBe[i] &= ~ADAY;
if (findMatchingDay)
couldBe[i] &= ~AMONTH;
}
// First set the year/month/day that have been deduced
// and reduce the set as we go along to deduce more
for (int i = 0; i < unknownCount; ++i) {
int unset = 0;
for (int j = 0; j < 3; ++j) {
if (couldBe[j] == ADAY && day == -1) {
day = unknown[j];
unset |= ADAY;
} else if (couldBe[j] == AMONTH && month == -1) {
month = unknown[j];
unset |= AMONTH;
} else if (couldBe[j] == AYEAR && year == -1) {
year = unknown[j];
unset |= AYEAR;
} else {
// common case
break;
}
couldBe[j] &= ~unset;
}
}
// Now fallback to a standardized order to fill in the rest with
for (int i = 0; i < unknownCount; ++i) {
if (couldBe[i] & AMONTH && month == -1) month = unknown[i];
else if (couldBe[i] & ADAY && day == -1) day = unknown[i];
else if (couldBe[i] & AYEAR && year == -1) year = unknown[i];
}
#ifdef PARSEDATESTRINGDEBUG
qDebug() << "Final set" << year << month << day;
#endif
if (year == -1 || month == -1 || day == -1) {
#ifdef PARSEDATESTRINGDEBUG
qDebug() << "Parser failure" << year << month << day;
#endif
return QDateTime();
}
// Y2k behavior
int y2k = 0;
if (year < 70)
y2k = 2000;
else if (year < 100)
y2k = 1900;
QDate date(year + y2k, month, day);
// When we were given a bad cookie that when parsed
// set the day to 29 and the year to one that doesn't
// have the 29th of Feb rather then adding the extra
// complicated checking earlier just swap here.
// Example: 29 23 Feb
if (!date.isValid())
date = QDate(day + y2k, month, year);
QDateTime dateTime(date, time, Qt::UTC);
if (zoneOffset != -1) {
dateTime = dateTime.addSecs(zoneOffset);
}
if (!dateTime.isValid())
return QDateTime();
return dateTime;
}
void CLIProcessor::parseCLIArgsPostConfig(const QStringList& argList, QSettings* confSettings)
{
// Over-ride config file options with command line options
// We should catch exceptions from argsGetOptionWithArg...
int fullScreen, altitude;
float fov;
QString landscapeId, homePlanet, longitude, latitude, skyDate, skyTime;
QString projectionType, screenshotDir, multiresImage, startupScript;
QString lgmode, lgport;
int lgoffset;
try
{
bool dumpOpenGLDetails = argsGetOption(argList, "-d", "--dump-opengl-details");
qApp->setProperty("dump_OpenGL_details", dumpOpenGLDetails);
fullScreen = argsGetYesNoOption(argList, "-f", "--full-screen", -1);
landscapeId = argsGetOptionWithArg(argList, "", "--landscape", "").toString();
homePlanet = argsGetOptionWithArg(argList, "", "--home-planet", "").toString();
altitude = argsGetOptionWithArg(argList, "", "--altitude", -1).toInt();
longitude = argsGetOptionWithArg(argList, "", "--longitude", "").toString();
latitude = argsGetOptionWithArg(argList, "", "--latitude", "").toString();
skyDate = argsGetOptionWithArg(argList, "", "--sky-date", "").toString();
skyTime = argsGetOptionWithArg(argList, "", "--sky-time", "").toString();
fov = argsGetOptionWithArg(argList, "", "--fov", -1.f).toFloat();
projectionType = argsGetOptionWithArg(argList, "", "--projection-type", "").toString();
screenshotDir = argsGetOptionWithArg(argList, "", "--screenshot-dir", "").toString();
multiresImage = argsGetOptionWithArg(argList, "", "--multires-image", "").toString();
startupScript = argsGetOptionWithArg(argList, "", "--startup-script", "").toString();
lgmode = argsGetOptionWithArg(argList, "", "--lg", "").toString();
lgoffset = argsGetOptionWithArg(argList, "", "--lg-offset", 0).toInt();
lgport = argsGetOptionWithArg(argList, "", "--lg-port", "5000").toString();
}
catch (std::runtime_error& e)
{
qCritical() << "ERROR while checking command line options: " << e.what();
exit(0);
}
// Will be -1 if option is not found, in which case we don't change anything.
if (fullScreen==1)
confSettings->setValue("video/fullscreen", true);
else if (fullScreen==0)
confSettings->setValue("video/fullscreen", false);
if (!landscapeId.isEmpty()) confSettings->setValue("location_run_once/landscape_name", landscapeId);
if (!homePlanet.isEmpty()) confSettings->setValue("location_run_once/home_planet", homePlanet);
if (altitude!=-1) confSettings->setValue("location_run_once/altitude", altitude);
if (!longitude.isEmpty()) confSettings->setValue("location_run_once/longitude", StelUtils::getDecAngle(longitude)); // Store longitude in radian
if (!latitude.isEmpty()) confSettings->setValue("location_run_once/latitude", StelUtils::getDecAngle(latitude)); // Store latitude in radian
if (!lgmode.isEmpty()) {
confSettings->setValue("lg/mode", lgmode.toUpper());
confSettings->setValue("lg/port", lgport);
confSettings->setValue("lg/offset", lgoffset);
/// std::cout << "conf values : " << lgmode.toStdString() << " " << lgoffset << std::endl;
} else
confSettings->setValue("lg/mode", "");
if (!skyDate.isEmpty() || !skyTime.isEmpty())
{
// Get the Julian date for the start of the current day
// and the extra necessary for the time of day as separate
// components. Then if the --sky-date and/or --sky-time flags
// are set we over-ride the component, and finally add them to
// get the full julian date and set that.
// First, lets determine the Julian day number and the part for the time of day
QDateTime now = QDateTime::currentDateTime();
double skyDatePart = now.date().toJulianDay();
double skyTimePart = StelUtils::qTimeToJDFraction(now.time());
// Over-ride the skyDatePart if the user specified the date using --sky-date
if (!skyDate.isEmpty())
{
// validate the argument format, we will tolerate yyyy-mm-dd by removing all -'s
QRegExp dateRx("\\d{8}");
if (dateRx.exactMatch(skyDate.remove("-")))
skyDatePart = QDate::fromString(skyDate, "yyyyMMdd").toJulianDay();
else
qWarning() << "WARNING: --sky-date argument has unrecognised format (I want yyyymmdd)";
}
if (!skyTime.isEmpty())
{
QRegExp timeRx("\\d{1,2}:\\d{2}:\\d{2}");
if (timeRx.exactMatch(skyTime))
skyTimePart = StelUtils::qTimeToJDFraction(QTime::fromString(skyTime, "hh:mm:ss"));
else
qWarning() << "WARNING: --sky-time argument has unrecognised format (I want hh:mm:ss)";
}
confSettings->setValue("navigation/startup_time_mode", "preset");
confSettings->setValue("navigation/preset_sky_time", skyDatePart + skyTimePart);
}
if (!multiresImage.isEmpty())
confSettings->setValue("skylayers/clilayer", multiresImage);
else
{
confSettings->remove("skylayers/clilayer");
}
if (!startupScript.isEmpty())
{
qApp->setProperty("onetime_startup_script", startupScript);
}
if (fov>0.0) confSettings->setValue("navigation/init_fov", fov);
if (!projectionType.isEmpty()) confSettings->setValue("projection/type", projectionType);
if (!screenshotDir.isEmpty())
{
try
{
QString newShotDir = QDir::fromNativeSeparators(argsGetOptionWithArg(argList, "", "--screenshot-dir", "").toString());
if (!newShotDir.isEmpty())
StelFileMgr::setScreenshotDir(newShotDir);
}
catch (std::runtime_error& e)
{
qWarning() << "WARNING: problem while setting screenshot directory for --screenshot-dir option: " << e.what();
}
}
else
{
const QString& confScreenshotDir = QDir::fromNativeSeparators(confSettings->value("main/screenshot_dir", "").toString());
if (!confScreenshotDir.isEmpty())
{
try
{
StelFileMgr::setScreenshotDir(confScreenshotDir);
}
catch (std::runtime_error& e)
{
qWarning() << "WARNING: problem while setting screenshot from config file setting: " << e.what();
}
}
else
{
QString screenshotDirSuffix = "/Stellarium";
if (!QStandardPaths::standardLocations(QStandardPaths::PicturesLocation).isEmpty())
screenshotDir = QStandardPaths::standardLocations(QStandardPaths::PicturesLocation)[0].append(screenshotDirSuffix);
else
screenshotDir = StelFileMgr::getUserDir().append(screenshotDirSuffix);
try
{
StelFileMgr::setScreenshotDir(screenshotDir);
confSettings->setValue("main/screenshot_dir", screenshotDir);
}
catch (std::runtime_error &e)
{
qDebug("Error: cannot create screenshot directory: %s", e.what());
}
}
}
}
