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Duplicate partial line text with vi/vim

I have two lists like these below:

abc.domain.com
defg.domain.com
hijklmn.domain.com

abc.domain.com/sub/
defg.domain.com/anothersub/
hijklmn.domain.com/thirdsub/

I need to make these two lists appear like so:

abc.domain.com?ref=abc
defg.domain.com?ref=defg
hijklmn.domain.com?ref=hijklmn

abc.domain.com/sub/?ref=sub
defg.domain.com/anothersub/?ref=anothersub
hijklmn.domain.com/thirdsub/?ref=thirdsub

How to I accomplish this in vi/vim?

Solution

  • Assume the two lists are in two different buffers. We can do the job using vim's :s command:

    For list1:

    %s/\v([^.]+).*/&?ref=\1/

    For list2:

    %s#\v.*/([^/]+)/$#&?ref=\1#

    If the two lists are mixed in one buffer, you can use :g command to do the substitution only on a certain target.