I'm attempting to run a regex to capture the key and value of the following string:
name="Evoke Sprite" parent="EvokeObjects" instance=ExtResource( 5 ) id=5
Here are some syntax notes for each are as follows:
- Keys: a string of letters, no spaces
Values:
- May have quotation marks eg. "EvokeObjects"
- May have spaces within the quotation marks
- May have special characters within the quotation marks eg "hello/world@!18"
- May have a function like string ("ExtResource( 5 )").
- The function string will have spaces within the brackets
I've gotten as far as having spaces within quotes with this:
(.*?)=(?:"(.*?)"|(.*?))(?: |$)
So this will work with name="Evoke Sprite" parent="EvokeObjects" id=5
regex101 to test: https://regex101.com/r/xkRRsD/1
The problem occurs when I add the ExtResource( 5 ) because it has the space within the brackets. Then the previous regex code fails.
As a possible workaround I was thinking maybe I could remove the spaces altogether from the brackets by doing a string replace in code. But I was wondering if there was a regex solution to this?
In the second part of the alternation, you match until a space or the end of the string so that would match ExtResource(
What you could do is either match not a parenthesis or match from an opening till a closing parenthesis.
Instead of using non greedy quantifiers, you might use a negated character class.
([^=\s]+)=(?:"([^"]+)"|((?:[^\s()"]|\([^()]*\))+))
Explanation
([^=]+)=Capture group 1, match any char except=, then match=(?:Non capturing groups"([^"]*)"Match ", then capture any char except " in group 2, then match "|Or(Capture group 3(?:Non capturing group[^\s()"]Match any char except(,),"or a whitespace char|Or\([^()]*\)Match from opening till closing parenthesis
)+Close non capturing group and repeat 1+ times
)Close group 3
)Close non capturing group