my $mod_plus = shift;
my %config;
- open FILE, "$file" or die "can't open file";
+ open FILE, "$file" or die "can't open file '$file'";
while (<FILE>) {
chomp;
/^$PREFIX(.+?)=(.+)/ and do {
my %cfg = %$_;
foreach my $config (keys %cfg) {
- next if $mod_plus and $config{$config} and $config{$config} eq "y";
+ if ($mod_plus and $config{$config}) {
+ next if $config{$config} eq "y";
+ next if $cfg{$config} eq '#undef';
+ }
$config{$config} = $cfg{$config};
}
}
return \%config;
}
-sub config_diff($$) {
+sub config_diff($$$) {
my $cfg1 = shift;
my $cfg2 = shift;
+ my $new_only = shift;
my %config;
foreach my $config (keys %$cfg2) {
if (!defined($cfg1->{$config}) or $cfg1->{$config} ne $cfg2->{$config}) {
+ next if $new_only and !defined($cfg1->{$config}) and $cfg2->{$config} eq '#undef';
$config{$config} = $cfg2->{$config};
}
}
} elsif ($arg eq '>') {
my $arg1 = parse_expr($pos);
my $arg2 = parse_expr($pos);
- return config_diff($arg1, $arg2);
+ return config_diff($arg1, $arg2, 0);
+ } elsif ($arg eq '>+') {
+ my $arg1 = parse_expr($pos);
+ my $arg2 = parse_expr($pos);
+ return config_diff($arg1, $arg2, 1);
} elsif ($arg eq '-') {
my $arg1 = parse_expr($pos);
my $arg2 = parse_expr($pos);