Regex: Find words with multiple periods

Question

I am given a task that will require regex to find a string out of a paragraph. I need to find a string that looks something.like.this but is not limited to looking.something.like.this.also.

Using the paragraph above as an example, this expression would have pulled out "something.like.this" and "looking.something.like.this.also"

Must me A-z, no =+[]{}\/?*&^%$#@!*, can include .()-

I thought about checking to see if there are multiple periods between spaces.

Answer 1

Is this regex what you're looking for?

(?:[A-Za-z(\)-]+(?:\.[A-Za-z\(\)-]+)+){2,}

Additional criterias in comments

• Cannot match ... .

  This would also match ... which is not included in the OP's requirements. – juharr

  @Zsw i didnt think about it, but @juharr is correct, i cannot have ... – Bernie

• Cannot match consecutive periods.

  What about consecutive periods like this..has...multiple....periods - juharr

  @juharr i should also ignore this, but it will be highly unlikely that will appear in any of the text it will run against. – Bernie

• Cannot match one.two.

  @Zsw one.two cannot be matched. I found using [A-Za-z.()-]+.[A-Za-z.()-]+.[A-Za-z.()-]+ works for this, but how do i ignore the ... or this...this..this? – Bernie