regex to match everything until it finds 2 upper case characters?

Question

so far I have this

(?:(?![A-Z]{2,}).)*

which matches everything until HTTPHEADER, however I want it to stop when it sees HttpHeader

how to do that?

so if I have string like Http is an HttpHeader

it should match Http is an

Does that mean you want to step the match when it sees the same two upper case characters? And does that mean that the match in `HttpHeader` should be `HttpH`? — Jerry, Dec 21 '13 at 10:24
So, if the string is: `Http is a Nice Header`, it should match `Http is a Nice `? And if you have `Http is a Nice thiNg to Have`, should it match `Http is a Nice thi`? — Jerry, Dec 21 '13 at 10:30
@Jerry not it should match Http is a Nice thiNg to Have, it does not matter where the capital letter is just that there is no 2 capital letters in any word — user3117904, Dec 21 '13 at 10:35
Then I think the string in your question is wrong; it should be `Http is an HttpHeader`, right? — Jerry, Dec 21 '13 at 10:41

score 0 · Accepted Answer · answered Dec 21 '13 at 10:40

0

You could perhaps use this:

^(?:(?!(?:\S*[A-Z]){2}).)+

(?:\S*[A-Z]){2} will match only if a word has two uppercase characters.

And since this is in a negative lookahead, the match will stop only if a word with two uppercase characters is found ahead.

answered Dec 21 '13 at 10:40

Jerry

It might actually be a bit faster if you use `[^\sA-Z]*` instead of `\S*` there. – Jerry Dec 21 '13 at 10:45

score 0 · Answer 2 · answered Dec 21 '13 at 17:16

0

using Jerry's suggestion and this pattern is much more efficient
^.*(?=\b(?:[^\sA-Z]*[A-Z]){2}) Demo

answered Dec 21 '13 at 17:16

alpha bravo

score 0 · Answer 3 · answered Dec 22 '13 at 08:16

0

(.*?(?=[A-Z]\S*[A-Z]))

Why should we make it hard?! Live demo

answered Dec 22 '13 at 08:16

revo

3 Answers3