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- #! /usr/bin/perl
- # -*-Perl-*-
- #
- # Contributed by David G. Grubbs <dgg@ksr.com>
- #
- # Clean up the history file. 10 Record types: MAR OFT WUCG
- #
- # WUCG records are thrown out.
- # MAR records are retained.
- # T records: retain only last tag with same combined tag/module.
- #
- # Two passes: Walk through the first time and remember the
- # 1. Last Tag record with same "tag" and "module" names.
- # 2. Last O record with unique user/module/directory, unless followed
- # by a matching F record.
- #
-
- $r = $ENV{"CVSROOT"};
- $c = "$r/CVSROOT";
- $h = "$c/history";
-
- eval "print STDERR \$die='Unknown parameter $1\n' if !defined \$$1; \$$1=\$';"
- while ($ARGV[0] =~ /^(\w+)=/ && shift(@ARGV));
- exit 255 if $die; # process any variable=value switches
-
- %tags = ();
- %outs = ();
-
- #
- # Move history file to safe place and re-initialize a new one.
- #
- rename($h, "$h.bak");
- open(XX, ">$h");
- close(XX);
-
- #
- # Pass1 -- remember last tag and checkout.
- #
- open(HIST, "$h.bak");
- while (<HIST>) {
- next if /^[MARWUCG]/;
-
- # Save whole line keyed by tag|module
- if (/^T/) {
- @tmp = split(/\|/, $_);
- $tags{$tmp[4] . '|' . $tmp[5]} = $_;
- }
- # Save whole line
- if (/^[OF]/) {
- @tmp = split(/\|/, $_);
- $outs{$tmp[1] . '|' . $tmp[2] . '|' . $tmp[5]} = $_;
- }
- }
-
- #
- # Pass2 -- print out what we want to save.
- #
- open(SAVE, ">$h.work");
- open(HIST, "$h.bak");
- while (<HIST>) {
- next if /^[FWUCG]/;
-
- # If whole line matches saved (i.e. "last") one, print it.
- if (/^T/) {
- @tmp = split(/\|/, $_);
- next if $tags{$tmp[4] . '|' . $tmp[5]} ne $_;
- }
- # Save whole line
- if (/^O/) {
- @tmp = split(/\|/, $_);
- next if $outs{$tmp[1] . '|' . $tmp[2] . '|' . $tmp[5]} ne $_;
- }
-
- print SAVE $_;
- }
-
- #
- # Put back the saved stuff
- #
- system "cat $h >> $h.work";
-
- if (-s $h) {
- rename ($h, "$h.interim");
- print "history.interim has non-zero size.\n";
- } else {
- unlink($h);
- }
-
- rename ("$h.work", $h);
-
- exit(0);
-