apkbuild-cpan.in: fix missing variables fails and remove empty vars

aports convention is to delete empty variables from APKBUILD files
this causes and issue with updating existing APKBUILD files
new depends, makedepends or checkdepends are added to process the file
properly.  Empty variables are then deleted once the file processes correctly

1 files changed, 11 insertions, 3 deletions

diff --git a/apkbuild-cpan.in b/apkbuild-cpan.in
index 6a7ff52..cc1b416 100755
--- a/apkbuild-cpan.in
+++ b/apkbuild-cpan.in
@@ -302,11 +302,19 @@ sub do_depends {
 			die "Can't find license line in APKBUILD";
 	}
 	$text =~ s/^depends=\"([^\"]*)\"$/depends=\"$deps\"/mg or
-		die "Can't find depends line in APKBUILD";
+		$text =~ s/(license=.*\n)/$1depends=\"$deps\"\n/gm or
+			die "Can't insert depends line in APKBUILD";
+
 	$text =~ s/^makedepends=\"([^\"]*)\"$/makedepends=\"perl-dev $makedeps\"/mg or
-		die "Can't find makedepends line in APKBUILD";
+		$text =~ s/(depends=.*\n)/$1makedepends=\"$makedeps\"\n/gm or
+			die "Can't insert makedepends line in APKBUILD";
+
 	$text =~ s/^checkdepends=\"([^\"]*)\"$/checkdepends=\"$checkdeps\"/mg or
-		die "Can't find checkdepends line in APKBUILD";
+		$text =~ s/(makedepends=.*\n)/$1checkdepends=\"$checkdeps\"\n/gm or
+			die "Can't insert checkdepends line in APKBUILD";
+
+	# remove empty variables
+	$text =~ s/.*=""\n//g;
 
 	open my $fh, '>', "APKBUILD" or die;
 	print $fh $text;