+sub parse_package_metadata_usergroup($$$$$) {
+ my $makefile = shift;
+ my $typename = shift;
+ my $names = shift;
+ my $ids = shift;
+ my $spec = shift;
+ my $name;
+ my $id;
+
+ # the regex for name is taken from is_valid_name() of package shadow
+ if ($spec =~ /^([a-z_][a-z0-9_-]*\$?)$/) {
+ $name = $spec;
+ $id = -1;
+ } elsif ($spec =~ /^([a-z_][a-z0-9_-]*\$?)=(\d+)$/) {
+ $name = $1;
+ $id = $2;
+ } else {
+ warn "$makefile: invalid $typename spec $spec\n";
+ return 0;
+ }
+
+ if ($id =~ /^[1-9]\d*$/) {
+ if ($id >= 65536) {
+ warn "$makefile: $typename $name id $id >= 65536";
+ return 0;
+ }
+ if (not exists $ids->{$id}) {
+ $ids->{$id} = {
+ name => $name,
+ makefile => $makefile,
+ };
+ } elsif ($ids->{$id}{name} ne $name) {
+ warn "$makefile: $typename $name id $id is already taken by $ids->{$id}{makefile}\n";
+ return 0;
+ }
+ } elsif ($id != -1) {
+ warn "$makefile: $typename $name has invalid id $id\n";
+ return 0;
+ }
+
+ if (not exists $names->{$name}) {
+ $names->{$name} = {
+ id => $id,
+ makefile => $makefile,
+ };
+ } elsif ($names->{$name}{id} != $id) {
+ warn "$makefile: id of $typename $name collides with that defined defined in $names->{$name}{makefile}\n";
+ return 0;
+ }
+ return 1;
+}
+