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5b5139a9da
an empty addenda section. Handle kernel configs that lack a "machine" line by guessing at the location of GENERIC (assuming that it is in the same directory as the config file)
137 lines
3.8 KiB
Perl
Executable file
137 lines
3.8 KiB
Perl
Executable file
#!/usr/bin/perl -w
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#-
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# Copyright (c) 2004 Dag-Erling Coïdan Smørgrav
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer
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# in this position and unchanged.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. The name of the author may not be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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use strict;
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use Getopt::Std;
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sub EMPTY() {}
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MAIN:{
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my %opts;
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getopts('c', \%opts);
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my %config;
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my $machine;
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my $ident;
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while (<>) {
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chomp();
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s/\s*(\#.*)?$//;
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next unless $_;
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my ($keyword, $values) = split(' ', $_, 2);
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foreach my $value (split(/,\s*/, $values)) {
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if ($keyword eq 'machine') {
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$machine = $value;
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} elsif ($keyword eq 'ident') {
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$ident = $value;
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} elsif ($keyword eq 'options' && $value =~ m/(\w+)=(.+)/) {
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$config{$keyword}->{$1} = $2;
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} else {
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$config{$keyword}->{$value} = \&EMPTY;
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}
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}
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}
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my $generic;
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if ($machine) {
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$generic = "/usr/src/sys/$machine/conf/GENERIC";
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} else {
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($generic = $ARGV) =~ s|([^/])+$|GENERIC|;
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}
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local *GENERIC;
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open(GENERIC, "<", $generic)
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or die("$generic: $!\n");
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my $blank = 0;
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while (<GENERIC>) {
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my $line = $_;
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chomp();
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if ($opts{'c'} && m/^\s*\#/) {
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if ($blank) {
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print "\n";
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$blank = 0;
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}
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print $line;
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next;
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}
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++$blank unless $_;
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s/\s*(\#.*)?$//;
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next unless $_;
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my ($keyword, $value) = split(' ', $_);
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if ($keyword eq 'machine') {
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die("$generic is for $value, not $machine\n")
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unless ($value eq $machine);
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} elsif ($keyword eq 'ident') {
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$line =~ s/$value/$ident/;
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} elsif ($keyword eq 'options' && $value =~ m/(\w+)=(.+)/ &&
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$config{$keyword} && $config{$keyword}->{$1} &&
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$config{$keyword}->{$1} != \&EMPTY) {
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$value = $1;
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if ($config{$keyword}->{$value} ne $2) {
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my ($old, $new) = ($2, $config{$keyword}->{$value});
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$line =~ s{=$old}{=$new};
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}
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delete($config{$keyword}->{$value});
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delete($config{$keyword})
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unless %{$config{$keyword}};
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} elsif ($config{$keyword} && $config{$keyword}->{$value}) {
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delete($config{$keyword}->{$value});
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delete($config{$keyword})
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unless %{$config{$keyword}};
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} else {
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next;
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}
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if ($blank) {
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print "\n";
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$blank = 0;
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}
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print $line;
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}
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close(GENERIC);
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if (%config) {
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print "\n# Addenda\n";
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foreach my $keyword (sort(keys(%config))) {
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foreach my $value (sort(keys(%{$config{$keyword}}))) {
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print "$keyword";
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if (length($keyword) < 7) {
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print "\t";
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} elsif (length($keyword) == 7) {
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print " ";
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}
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print "\t$value";
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print "=$config{$keyword}->{$value}"
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unless $config{$keyword}->{$value} == \&EMPTY;
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print "\n";
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}
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}
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}
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exit(0);
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}
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