RE: How can we find out which one is tag and which one is branch?

Pradeep,
 
You are getting into the internals of CVS and RCS which is unwise.
There are actually at least 3 different things: tags, branches and
vendor branches - and CVSNT also has alias tags and magic branches.
 
From memory in CVS and CVSNT a tag never has a zero, ie: the first is a
branch and the second a tag:
 CVSNT_BRANCH_3_1_01_3292: 1.97.0.2
 CVSNT_2_5_03_3280: 1.1.2.173.4.219
 
Whatever you implement outside of CVS itself is certain to eventually be
incorrect, my preference is to always recommend to system integrators to
call CVS itself to tell you what information you need - in this case a
call like "cvs log -N -rCVSNT_2_5_03_3280. filename.ext" should in
theory generate a warning if it's not a branch - but I've just done some
limited testing and I get rather variable results:   
   warning: no branch `CVSNT_2_5_03_3280' in
`/repo/path/to/filename.ext,v'

I know for CVSNT in the CVSAPI we have a function that calls rlog and
returns an array of structures to tell a calling program what are tags
and what are branches - but that's no help to you...
 
Regards,
 
 
Arthur Barrett
 
 


	-----Original Message-----
	From: [email protected]
[mailto:[email protected]] On
Behalf Of Pradeep Sharma
	Sent: Thursday, 14 May 2009 4:10 PM
	To: [email protected]
	Subject: How can we find out which one is tag and which one is
branch?
	
	

	 

	In CVS, the branch and versions both, are shown as a string of
numerals separated by dot(.) so

	 

	How can we find out which one is tag and which one is branch
without any error or ambiguity using shell script?

	Is there any script, command or way out?

	 

	Thanks and regards,
	Pradeep