正则表达式在两个引号之间匹配

Question

Here are the types of strings I want to match

(string are single quotes delimited (think var str = '"hi, what"s up, what a nice day"'; )):

1. ' "This is a str"'
2. ' "This is also a str "
3. '"So is this'
4. '"This should "also match un"til th"e last "'

In each case it should capture whatever is after the first dquote if there's only spaces before it up to a last quote (which is completely optional).

Another thing, a string containing just " shouldn't match ex '""""""""""""' shouldn't match at all.

Also leading and trailing whitespaces are ignored both between the quotes and outside the quotes.

Here's the regex I have so far:

/^\s*\"\s*(.*?)\s*(?:\"\s*)?$

But it also gets '""""""""""""""""' so that's where I'm stuck.

What can I do to not match a whole string of just dquotes?

EDIT:

I think I explained what I want wrong, I want it to match a string of dquotes but not capture any of it

Answer 1

You can alter your regex so that the content contains at least one non-" character:

/^\s*\"\s*(.*?[^"].*?)\s*(?:\"\s*)?$/

Update : If you don't want starting and trailing " to be captured, just allow several of them at the borders:

/^\s*\"+\s*(.*?)\s*(?:\"+\s*)?$/