TMtech
0
I have come up with a regex pattern to match a part of a Json value. But only PRCE engine is supporting this. I want to know the Java equalent of this regex.
Simplified version
cif:\K.*(?=(.+?){4})
Matches part of the value, leaving the last 4 characters.
cif:test1234
Matched value will be test
https://regex101.com/r/xV4ZNa/1
Note: I can only define the regex and the replace text. I don't have access to the Java code since it's handle by a propriotery log masking framework.
You can use a lookbehind assertion instead:
(?<=cif:).*(?=(.+?){4})
You can write simplify the pattern to:
(?<=cif:).*(?=....)
Explanation
(?<=cif:) Positive lookbehind, assert cif: to the left.* Match 0+ times any character without newlines(?=....) Positive lookahead, assert 4 characters (which can include spaces)See a regex demo.
If you don't want to match empty strings, then you can use .+ instead
(?<=cif:).+(?=....)