Timespan-Regex with Days-Portion

问题

I've just tried several hundreds (if not thousands...) of RegEx's available to get what I want... But none of them worked.

I'm simply looking for a Regular expression, that represents a TimeSpan days.hours:minutes:seconds: 7.00:00:00 would represent "7 Days"

This one sadly doesn't work:

(\d\d).(\d\d):(([0-6][0])|([0-5][0-9])):(([0-6][0])|([0-5][1-9]))

回答1:

That's because your Regex pattern is expecting 2 digits for days and you only have 1 digit. Just make the first digit optional with ?

(\d?\d)\.(\d\d):(60|([0-5][0-9])):(60|([0-5][0-9]))

or better yet just use + to match one or more because that pattern would still not match 100 days

(\d+)\.(\d\d):(60|([0-5][0-9])):(60|([0-5][0-9]))

回答2:

The accepted answer doesn't seem to work for the basic case.

Following the TimeSpan parsing rule I have come up with this pattern.

^((?:-?0*\d+\.)?(?:0*)(?:2[0-3]|1[0-9]|[0-9]))(?::0*([0-5]?[0-9]))?(?::0*((?:[0-5]?[0-9])(?:\.\d{0,7})?))?$

Note This pattern will pass the 10.12 format while MSDN marks this as an invalid format. This should be a valid format IMO.

回答3:

This one is technically more correct and probably more efficient too:

\d+\.((0?\d)|(1\d)|(2[0-3]))(:[0-5]\d){2}

回答4:

This one worked pretty well for me.

^(\d{1,2}|\d\.\d{2}):([0-5]\d):([0-5]\d)(\.\d+)?$

Here are the validation results for different inputs.

+-----------------------+-------+
| Input                 | Valid |
+-----------------------+-------+
| 1.10:14:15.1          | True  |
+-----------------------+-------+
| .10:14:15.1           | False |
+-----------------------+-------+
| 1.10:14:15.           | False |
+-----------------------+-------+
| 1.10:14:15.123haha456 | False |
+-----------------------+-------+
| 10:14:15.1            | True  |
+-----------------------+-------+
| 100:14:15.1           | False |
+-----------------------+-------+
| 6:14:15.1             | True  |
+-----------------------+-------+
| :14:15.1              | False |
+-----------------------+-------+
| 00:14:15              | True  |
+-----------------------+-------+

来源：https://stackoverflow.com/questions/12438861/timespan-regex-with-days-portion

标签

regex

timespan