I'm trying to extract a certain part of the text from a file. I'm having trouble making the regular expression match the least number of characters as possible.
Here is an example text file.
UNIQUE
sdkjbskdfb....
UNIQUE
lnasdljnkjn......
UNIQUE
*Text from here is needed*
UNIQUE2
*Text from here is needed*
UNIQUE
My best effort was this. "UNIQUE(.\\*?)UNIQUE2(.\\*?)UNIQUE"
Unfortunately this matches the whole thing because it uses the first UNIQUE
value instead of the third one.
You need a negative lookahead:
UNIQUE((?:(?!UNIQUE).)*?)UNIQUE2(.*?)UNIQUE
This says, find UNIQUE
followed by some string that doesn't contain UNIQUE
again before you hit UNIQUE2
, etc.
Let me know if you need clarification.
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