92 lines
1.9 KiB
Perl
92 lines
1.9 KiB
Perl
#!/usr/bin/perl -- # -*-Perl-*-
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#
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# $Id: cln_hist.pl,v 1.1 1992/04/10 03:04:15 berliner Exp $
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# Contributed by David G. Grubbs <dgg@ksr.com>
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#
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# Clean up the history file. 10 Record types: MAR OFT WUCG
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#
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# WUCG records are thrown out.
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# MAR records are retained.
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# T records: retain only last tag with same combined tag/module.
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#
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# Two passes: Walk through the first time and remember the
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# 1. Last Tag record with same "tag" and "module" names.
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# 2. Last O record with unique user/module/directory, unless followed
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# by a matching F record.
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#
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$r = $ENV{"CVSROOT"};
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$c = "$r/CVSROOT";
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$h = "$c/history";
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eval "print STDERR \$die='Unknown parameter $1\n' if !defined \$$1; \$$1=\$';"
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while ($ARGV[0] =~ /^(\w+)=/ && shift(@ARGV));
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exit 255 if $die; # process any variable=value switches
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%tags = ();
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%outs = ();
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#
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# Move history file to safe place and re-initialize a new one.
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#
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rename($h, "$h.bak");
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open(XX, ">$h");
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close(XX);
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#
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# Pass1 -- remember last tag and checkout.
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#
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open(HIST, "$h.bak");
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while (<HIST>) {
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next if /^[MARWUCG]/;
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# Save whole line keyed by tag|module
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if (/^T/) {
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@tmp = split(/\|/, $_);
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$tags{$tmp[4] . '|' . $tmp[5]} = $_;
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}
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# Save whole line
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if (/^[OF]/) {
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@tmp = split(/\|/, $_);
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$outs{$tmp[1] . '|' . $tmp[2] . '|' . $tmp[5]} = $_;
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}
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}
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#
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# Pass2 -- print out what we want to save.
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#
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open(SAVE, ">$h.work");
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open(HIST, "$h.bak");
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while (<HIST>) {
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next if /^[FWUCG]/;
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# If whole line matches saved (i.e. "last") one, print it.
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if (/^T/) {
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@tmp = split(/\|/, $_);
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next if $tags{$tmp[4] . '|' . $tmp[5]} ne $_;
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}
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# Save whole line
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if (/^O/) {
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@tmp = split(/\|/, $_);
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next if $outs{$tmp[1] . '|' . $tmp[2] . '|' . $tmp[5]} ne $_;
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}
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print SAVE $_;
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}
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#
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# Put back the saved stuff
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#
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system "cat $h >> $h.work";
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if (-s $h) {
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rename ($h, "$h.interim");
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print "history.interim has non-zero size.\n";
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} else {
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unlink($h);
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}
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rename ("$h.work", $h);
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exit(0);
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