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RE: How to find out the CVSROOT and location in the repository of a w o

From: Reinstein, Shlomo
Subject: RE: How to find out the CVSROOT and location in the repository of a w orking directory
Date: Tue, 25 Jun 2002 11:38:33 +0300

About the first possibility below, this was the first thing that I tried
before I sent the message to the mailing list.
I noticed that I have a problem with sticky dates: I cannot take the sticky
date from the output of "cvs status" and just use "cvs update -D
<sticky-date>". I need to do a format conversion, and moreover, I need to
translate the timezone!

I preferred not to use the 2nd option because then I would need to add
support for each OS/shell. (The copy command would be different.)

Just FYI, I am no longer interested in a solution for this because I am now
taking a different approach to my problem, which avoids the need in any CVS
operations. However, I have learned a few very valuable and interesting
things during this discussion...


-----Original Message-----
From: Eric Siegerman [mailto:address@hidden
Sent: Tuesday, June 25, 2002 1:31 AM
To: 'address@hidden'
Subject: Re: How to find out the CVSROOT and location in the repository of a
w orking directory

> To be more specific about what I need (maybe there's a way to do it
> caring for the CVSROOT and location), I have a file in each module that
> a fixed name and is used by my script to enable users to "lock" the module
> for a short time. Whenever a new branch is created for a module, this file
> should be "initialized" for that branch, to indicate that the branch is
> locked". To do this, the script should modify it and commit a new revision
> of it into the branch. (This is needed because the file might indicate
> "locked" state for the root of the branch.) In order to do this, I want to
> check-out a fresh copy of that file (okay, with its whole directory) to a
> temporary directory, and then do these things on the copy in the temporary
> directory. In order to check it out, I need the CVSROOT and location
> the repository.

Three possibilities:
 1. Do this in place, without using a temporary directory:
      - use "cvs status lock-file" (no -t needed) to learn which 
        is the sticky branch or date for the file, if any

      - use "cvs update -r <new-branch> lock-file" to put the 
        lock file onto the correct branch

      - make your changes, and commit

      - use "cvs update -C" (and either -D/-r or -A) to restore
        the lock file to its previous state

 2. Use the temporary directory, but copy it from the working
    directory rather than checking it out fresh.
      - Use something like this shell pseudocode to set up the
        temporary directory: 
          cd working-dir
          mkdir /tmp/foo$$
          cp -pR lock-file CVS /tmp/foo$$
        (Note that we only copy the lock file itself, not the
        rest of the directory's contents.)

      - Make your changes to the temporary copy

      - Commit.  You'll have to name the file explicitly:
          cvs commit lock-file
        Otherwise the up-to-date check will fail, because all
        the other files in the (temporary) working directory
        will be missing.

  3. As Larry Jones says, give in and use CVS/Root and


|  | /\
|-_|/  >   Eric Siegerman, Toronto, Ont.        address@hidden
|  |  /
Anyone who swims with the current will reach the big music steamship;
whoever swims against the current will perhaps reach the source.
        - Paul Schneider-Esleben

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