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Christopher ScheneFlag for United States of America asked on

Need regular expression to test

I need a regular expression that will match on the following conditions:
1. Needs to match any string that contains “Application1 myCompany M117 Corp_LA”
2. Needs to match any string that contains “Application2 myCompany M117 Corp_LA”
3. Needs to match any string that contains “Application3 myCompany M117 Corp_LA”
4. Needs to match any string that starts with an underscore. For example _app1 or _app_2, but NOT app_3

I’ve tried:
(Application1 myCompany M117|Application2 myCompany M117 Corp_LA|Application3 myCompany M117 Corp_LA)|^(_.*)

This seems to work in an online regex tester, but doesn’t work in the actual application.
SoftwareMicrosoft Office

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Amick

8/22/2022 - Mon
ozo

What application, and how is it used in the actual application?
ASKER
Christopher Schene

It is actually a home grown internal application......but the app is using boost RegEx
SOLUTION
Amick

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ozo

Do you know exactly what parameters are being passed to the boost RegEx function?
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William Peck
Amick

Lacking a multi-line mode you might also try

Application[1-3] myCompany M117 Corp_LA|\n_.*

OR

Application[1-3] myCompany M117 Corp_LA|\r_.*
kaufmed

@Amick

You may want to adjust your last offering since it wouldn't account for the first line starting with an underscore  ; )
Amick

@kaufmed - Excellent point!

I had my eye on those cases where multi-line mode might be necessary and not available, but clearly the unique first-line case can be addressed by appending the original |^_.* as in:

Application[1-3] myCompany M117 Corp_LA|\r_.*|^_.*
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