How do I identify what branches exist in CVS?

Question

I have a legacy CVS repository which shall be migrated to Perforce.

For each module, I need to identify what branches exist in that module.

I just want a list of

Answer 1

You could simply parse log output of cvs log -h. For each file there will be a section named Symbolic names :. All tags listed there that have a revision number that contains a zero as the last but one digit are branches. E.g.:

$ cvs log -h

Rcs file : '/cvsroot/Module/File.pas,v'
Working file : 'File.pas'
Head revision : 1.1
Branch revision : 
Locks : strict
Access :
Symbolic names :
    1.1 : 'Release-1-0'
    1.1.2.4 : 'Release-1-1'
    1.1.0.2 : 'Maintenance-BRANCH'
Keyword substitution : 'kv'
Total revisions : 5
Selected revisions : 0
Description :

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In this example Maintenance-BRANCH is clearly a branch because its revision number is listed as 1.1.0.2. This is also sometimes called a magic branch revision number.