How to extend/override an existing configuration (sun, google)

[binkley]

I'd like to slightly modify the existing sun_checks.xml without copying it into my project. This way I'd pick up improvements in newer version of checkstyle for Sun style (or Google as well), and only keep my modifications.

In particular, I'd like to set NewLineAtEndOfFile property lineSeparator to lf rather than use the system ending. The code base uses UNIX endings regardless of developer platform.

Perhaps this is a limitation of the maven plugin, and not in checkstyle? Trying to provide configuration of both configLocation and checkstyleRules (inline config in pom.xml) is not supported.

Any suggestions would be appreciated!

[rnveach]

I'd like to slightly modify the existing sun_checks.xml without copying it into my project.

This is not possible right now. You must physically copy the file right now and make changes as you wish.

There was a discussion of providing a way to allow this at #2873 , but it hasn't gone anywhere.

Perhaps this is a limitation of the maven plugin, and not in checkstyle?

This is a limitation of checkstyle. Plugins could still do 'hacks' to somehow allow it, but CS doesn't allow it at this time.

[romani]

@binkley ,

I'd like to slightly modify the existing sun_checks.xml

just FYI, this config is not complete coverage of sun code convention. It is some state that might be very similar. Detailed coverage http://checkstyle.sourceforge.net/sun_style.html is not done yet.
We have good coverage only for google style guide - http://checkstyle.sourceforge.net/google_style.html