Extract one word from String

Question

I am struggling with a REGEX and I can't find a solution. I have the following strings:

LSUS_GDIS_SHIP_0211e947-1587-11de-9967-99f27557554e.txt
LSUS_GDIS_REC_0211e947-1587-11de-9967-99f27557554e.txt
LSUS_GDIS_CAPACITY_0211e947-1587-11de-9967-99f27557554e.txt

I need to match each line except SHIP or REC or CAPACITY.

I came up with

(?!.*\bSHIP\b|\bREC\b|\bCAPACITY\b).*

How can I exclude SHIP or REC or CAPACITY? When I do

(SHIP|REC|CAPACITY)

I only match these strings but I want to exclude them.

You may *remove* them with your pattern. Please clarify your scenario. — Wiktor Stribiżew, Dec 20 '18 at 13:48
Also, please tell us which language or regex tool you are using. There are more than one way to approach this. — Tim Biegeleisen, Dec 20 '18 at 13:49
Hello both, it is a java system but I can't code it myself. I only have the possibility of setting a regex expression and then a "replacement" value. I need to replace everything but SHIP, REC or CAPACITY. — Peter, Dec 20 '18 at 13:50
If the "duplicate" link I provided does not solve your problem, please add more details to your question. — PM 77-1, Dec 20 '18 at 13:51
Replace with what? please show expected outputs on those three lines. — revo, Dec 20 '18 at 13:57
I would split it into two parts: Replace the string before the mentioned words and then replace after the words. Regex for before; `(.+?)(?=((SHIP)|(REC)|(CAPACITY)))` and after `(?<=(SHIP)|(REC)|(CAPACITY)).+` whereas the positive look-behind (`?<=`) may not be supported. — LittleBit, Dec 20 '18 at 14:14

score 2 · Answer 1 · edited Nov 14 '21 at 12:05

2

Each line can be broken into three parts with the regex

([A-Z_]+)(SHIP|REC|CAPACITY)([_a-z\d-\.]+)

Then you can use replacement as

replacement1+$2+replacement2

edited Nov 14 '21 at 12:05

Nimantha

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answered Dec 20 '18 at 14:10

Brij Raj Kishore

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score 1 · Accepted Answer · answered Dec 20 '18 at 14:19

Use regular expression to match group wise:

^([\s\S]*?)(SHIP|REC|CAPACITY)([\s\S]*?)$.*

Description: For result check this link

^ « Matches the start of a string without consuming any characters. If multiline mode is used, this will also match immediately after a newline character.
1st,3rd Capturing Groups ([\s\S]*?)
- \s « Matches any space, tab or newline character.
- \S « Matches anything other than a space, tab or newline.
- [\s\S] « match any character
- *? Quantifier — Matches between zero and unlimited times, as few times as possible, expanding as needed (lazy)
2nd Capturing Group (SHIP|REC|CAPACITY), matches these words as 2nd group
$ asserts position at the end of a line
- .* matches any character (except for line terminators)

Extract one word from String

2 Answers2