Swift Regex for extracting words between parenthesis

Question

Hello i wanna extract the text between ().

For example :

(some text) some other text -> some text
(some) some other text      -> some
(12345)          


        

Answer 1

This will work

\((?=.{0,10}\)).+?\)

Regex Demo

This will also work

\((?=.{0,10}\))([^)]+)\)

Regex Demo

Regex Breakdown

\( #Match the bracket literally
(?=.{0,10}\)) #Lookahead to check there are between 0 to 10 characters till we encounter another )
([^)]+) #Match anything except )
\) #Match ) literally

Answer 2

You can use

"(?<=\\()[^()]{1,10}(?=\\))"

See the regex demo

The pattern:

• (?<=\\() - asserts the presence of a ( before the current position and fails the match if there is none
• [^()]{1,10} - matches 1 to 10 characters other than ( and ) (replace [^()] with \w if you need to only match alphanumeric / underscore characters)
• (?=\\)) - checks if there is a literal ) after the current position, and fail the match if there is none.

If you can adjust your code to get the value at Range 1 (capture group) you can use a simpler regex:

"\\(([^()]{1,10})\\)"

See the regex demo. The value you need is inside Capture group 1.