How to validate certain files are modified on a path in bitbucket/stash

[dineshav]

Hello Friends,

  I need to write a groovy script that will validate a path during pullrequest/merge that certain files has been modified, if yes it should reject the merge.

example:

 Lets say, "properties" directory has got list of file, file-a, file-b, file-c and file-d. And if any one of this file got modified, merge should be allowed, if more than one file is modified it should reject the merge.

Could you please advise ?

Thanks in Advance

Dinesh