Regular expression, selects a portion of text inside other

Question

I am a bit clueless about the next task. I wish to select a text between " that its inside a tag but not outside of the tag,i.e. a selection inside another selection.

I have the next tag: <| and |> and i want to select a text only if its between the " and between the tags.

<| blah blah blah "should be selected" not selected "select it too" |> "not selected too"

I think something about

(\<\|)(\").*?(\")(\|\>)   

But it doesn't work.

Answer 1

I've got it to match correctly using two regexes.

var input = '<|a "b"|>c "d"ef<|"g"h "i"|>"j"k l';
var output=input.match(/<\|(.*?)\|>/g)
   .map(function(x){return x.match(/"(.*?)"/g)})
alert(output)

As you can see, correctly matches "b","g","i".

The principle:

1. find all the matches of text between <| and |>
2. for every match from the first step, find matches of text between two quotes.

(used the regex from the second answer from the linked question)

Answer 2

This will do the job in a single regex:

(?<=<\|[^>]*)"[^"]*"

In addition to a comment of nicael: It might be possible that the input string is not tagged correctly. This will help:

(?<=<\|((?!\|>).)*)"[^"]*"

If you need to use it with JavaScript:

(?=("[^"]*"[^"]*)*$)"[^"]*"(?=((?!<\|).)*\|>)