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Re: hitory of the tags

From: Christian Brechbuehler
Subject: Re: hitory of the tags
Date: Mon, 27 Nov 2000 20:55:19 -0500 (EST)

Excerpt of message (sent 27 November 2000) by Larry Jones:
> Anner Adrian writes:
> > how can I get the list of the dates of the tags.
> CVS doesn't directly track the date that a tag is applied to a file (and
> note that the dates in separate files might be quite different).

You can get the commit date of the revision corresponding to a tag out
of the cvs log.  This date will be earlier than the application of the
tag.  To post-process the output of cvs log, put the script below into
a file, say tag-date, make it executable, and run

  cvs log my_file | tag-date

* Branch tags don't have a checked-in revision associated with them.
* Dates are reordered into format, as in the example of
  Adrian Anner (with email in .ch).  Personally, I'd include the time.
* The script expects the cvs log output from a single file.  It could
  be extended.

  Christian Brechb├╝hler


#!/usr/local/bin/perl -w

# first read the whole log and remember what matters.

while (<>) {
  if (/^\t([a-z][-_\w]*): ([\d.]*(\d+)\.\d+)$/) {
    $tag_rev{$1} = $2;                                  # build tag -> rev hash
    $date{$2} = "(branch)" unless $3;                   # no date on branch tags
  } elsif (/^revision ([\d.]+)$/) {
    $rev = $1;                                          # remember revision
  } elsif (m"^date: (\d{4})/(\d{2})/(\d{2}) ") {
    $date{$rev} = "$3.$2.$1";                           # build rev -> date hash

# now report what we found.

while (($tag, $rev) = each %tag_rev) {
  print "$tag   $date{$rev}\n"

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