Question

At the moment I am trying to match patterns such as

text text date1 date2

So I have regular expressions that do just that. However, the issue is for example if users input data with say more than 1 whitespace or if they put some of the text in a new line etc the pattern does not get picked up because it doesn’t exactly match the pattern set.

Is there a more reliable way for pattern matching? The goal is to make it very simple for the user to write but make it easily matchable on my end. I was considering stripping out all the whitespace/newlines etc and then trying to match the pattern with no spaces i.e. texttextdate1date2.

Anyone got any better solutions?

Update

Here is a small example of the pattern I would need to match:

FIND [e-mail] 01/01/2010 to 10/01/2010

Here is my current regex:

FIND [A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4} [0-9]{1,2}/[0-9]{1,2}/[0-9]{2,4} to [0-9]{1,2}/[0-9]{1,2}/[0-9]{2,4}

This works fine 90% of the time, however, if users submit this information via email it can have all different kinds of formatting and HTML I am not interested in. I am using a combination of the HtmlAgilityPack and a HTML tag removing regex to strip all the HTML from the email, but even at that I can’t seem to get a match on some occassions.

I believe this could be a more parsing related question than pattern matching, but I think maybe there is a better way of doing this…

Answer 1

To match at least one or more whitespace characters (space, tab, newline), use:

\s+

Substitute the above wherever you have the physical space in your pattern and you should be fine.