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#!/usr/bin/perl -w
# take a solaris8 patch list and a solaris9 patch list and merge them
# together, removing duplicates
# we are looking for patches that have the same major revision
# number and release OS. We only want to keep the one with the highest
# minor revision number
# key is the major patch number
# the value is a hash ref which has two keys 'iminor' and 'val'
# the value of key 'iminor' is the minor patch number
# the system keeps track of all revisions (minor number) for each patch (major number)
# we only want to list the highest revision, since on Solaris higher revisions include
# and supersede lower revisions
# the value of key 'val' is the string to print out
%patches = ();
@lines = ();
for $file (@ARGV) {
open IN, $file or die "Error: could not open $file: $!";
while (<IN>) {
if (/^\s*\{(\d+),(\d+),\d,(\d+),/) {
$major = $1;
$minor = $2;
$rel = $3;
my $h = { 'val' => $_ };
$patches{$major}{$rel}{$minor} = $h;
if (! $patches{$major}{$rel}{highestminor}) {
$patches{$major}{$rel}{highestminor} = $minor;
} elsif ($patches{$major}{$rel}{highestminor} <= $minor) { # highest minor rev is lt or eq new minor
my $oldminor = $patches{$major}{$rel}{highestminor};
$patches{$major}{$rel}{$oldminor}->{skip} = 1;
$patches{$major}{$rel}{highestminor} = $minor;
} elsif ($patches{$major}{$rel}{highestminor} > $minor) {
# skip the new one
$h->{skip} = 1;
}
push @lines, $h; # put a hash ref into lines
} else {
push @lines, $_; # put the scalar value into lines
}
}
close IN;
}
for (@lines) {
if (ref($_)) {
if ($_->{skip}) {
chomp $_->{val};
print "/* duplicate or superseded ", $_->{val}, " */\n";
} else {
print $_->{val};
}
} else {
print;
}
}
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