Regexp: match and exclude

Question

In this list:

I would like to match only those images that BEGIN with the word image BUT do not contain the word small.

The regex should then return:

So far I have:

/^image(?!.*small)/m

Your Regex works. I changed it a bit so you grab the entire filename: [RegexPal](http://regexpal.com/?flags=gm&regex=^%28image%28%3F!.*small%29.*%29&input=image_1.png%0Aimage_1_small.png%0Aimage_2.png%0Aimage_2_small.png%0Aantoher_image.png) — f605dcf7dc5542e93ae9cd76f, Aug 14 '13 at 14:15
@HamZa I noticed that you keep using `(?!.*small)`, why the `.*` before small ?. Isn't `(?!small)` enough ? — Ibrahim Najjar, Aug 14 '13 at 14:18
@Sniffer `(?!small)` will only prevent "imagesmall" from matching. It would still match "image_1_small". — Michelle, Aug 14 '13 at 14:24
@Robit: i'm using cakephp folder api (http://book.cakephp.org/2.0/fr/core-utility-libraries/file-folder.html) to list files. It returned empty value. — hjrshng, Aug 14 '13 at 14:51
If that's the list, just use `^image_\d+\.png$`, why do you have to intentionally exclude "Small", and what is the Math in this? I think you could have a much more efficient solution if you gave more details. — Suamere, Aug 14 '13 at 16:18
@Suamere: i meant 'match' (edited). image_*small*.png are auto generated, so i don't want them to be shown in the user file manager. Your regex won't work because it should return ALL the images that begin with **image**, so it should match **image_three.png** too. — hjrshng, Aug 16 '13 at 13:18
That makes sense then, throw that up in the question as one of the examples to match. — Suamere, Aug 16 '13 at 14:57

score 1 · Answer 1 · edited May 23 '17 at 12:11

1

I tested this with your single lines from the list

 ^image(?!.*_small.*).*\.png$

see also this discussion on how to exclude keywords in regex

edited May 23 '17 at 12:11

Community

answered Aug 14 '13 at 14:36

576i

1 Answers1