RegEx - Capturing according to a pattern that matches EVEYTHING.. BUT the repetition of the beginnin-CodePudding

I struggle with my regex pattern and I need some help. I'm trying to scrape some javascript content to capture label and value pairs.

I started with this

"label" : "(.*)"[\s\S]*?"value" : "(.*)"

to scrape something like this

"label" : "Something ?",
blabla
blabla2
"value" : "NO"
blabla
"label" : "Foo ?",
blabla
blabla2
"value" : "Bar"

It works, it captures the label in the first group and the value in the second.

Something ? / NO
Foo ? / Bar

My problem is that, sometimes I have a label but NOT a value. In this case I would like to NOT match this isolated label.

Eg :

"label" : "Something ?",
blabla
blabla2
"value" : "NO"
blabla
"label" : "YouMad ?",
blabla
"label" : "Foo ?",
blabla
blabla2
"value" : "Bar"

gives

Something ? / NO
YouMad ? / Bar

I tried Negative Lookahead, some other thing... but i'm stuck

Any help will be appreciated!

Thanks

CodePudding user response：

You should not cross matching label using (?!"label")[\s\S])* and use a negated character class [^ to prevent some backtracking.

"label" : "([^"]*)"(?:(?!"label")[\s\S])*"value" : "([^"]*)"