/**
* Parse from string using the given timezone as context for
* date based ranges. The formats are:
* - "today"
* - "yesterday"
* - "{date}"
* - "{date},{date}"
* - "{dateTime},{dateTime}"
* - "{dateTime}" // anything after given timestamp
* Throw ParseException is invalid string format.
*/
public static HDateTimeRange make(string str, HTimeZone tz)
{
// handle keywords
str = str.Trim();
if (str.CompareTo("today") == 0)
{
return(make(HDate.today(), tz));
}
if (str.CompareTo("yesterday") == 0)
{
return(make(HDate.today().minusDays(1), tz));
}
// parse scalars
int comma = str.IndexOf(',');
HVal start = null, end = null;
if (comma < 0)
{
start = new HZincReader(str).readVal();
}
else
{
start = new HZincReader(str.Substring(0, comma)).readVal();
end = new HZincReader(str.Substring(comma + 1)).readVal();
}
// figure out what we parsed for start,end
if (start is HDate)
{
if (end == null)
{
return(make((HDate)start, tz));
}
if (end is HDate)
{
return(make((HDate)start, (HDate)end, tz));
}
}
else if (start is HDateTime)
{
if (end == null)
{
return(make((HDateTime)start, HDateTime.now(tz)));
}
if (end is HDateTime)
{
return(make((HDateTime)start, (HDateTime)end));
}
}
throw new FormatException("Invalid HDateTimeRange: " + str);
}
// Get HDate for current time in default timezone
public static HDate today()
{
return(HDateTime.now().date);
}