add experimental support for a new menuconfig submenu "Package features".

allows selection between multiple packages providing the same feature, which affects dependencies of other packages.
will be used e.g. for choosing between DirectFB and X.org for libraries like GTK2

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18056 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 23 insertions, 1 deletions

diff --git a/scripts/metadata.pm b/scripts/metadata.pm
index dd62b4c04a..8302728be6 100644
--- a/scripts/metadata.pm
+++ b/scripts/metadata.pm
@@ -2,13 +2,14 @@ package metadata;
 use base 'Exporter';
 use strict;
 use warnings;
-our @EXPORT = qw(%package %srcpackage %category %subdir %preconfig clear_packages parse_package_metadata get_multiline);
+our @EXPORT = qw(%package %srcpackage %category %subdir %preconfig %features clear_packages parse_package_metadata get_multiline);
 
 our %package;
 our %preconfig;
 our %srcpackage;
 our %category;
 our %subdir;
+our %features;
 
 sub get_multiline {
 	my $fh = shift;
@@ -28,11 +29,13 @@ sub clear_packages() {
 	%package = ();
 	%srcpackage = ();
 	%category = ();
+	%features = ();
 }
 
 sub parse_package_metadata($) {
 	my $file = shift;
 	my $pkg;
+	my $feature;
 	my $makefile;
 	my $preconfig;
 	my $subdir;
@@ -55,6 +58,7 @@ sub parse_package_metadata($) {
 		};
 		next unless $src;
 		/^Package:\s*(.+?)\s*$/ and do {
+			undef $feature;
 			$pkg = {};
 			$pkg->{src} = $src;
 			$pkg->{makefile} = $makefile;
@@ -69,6 +73,24 @@ sub parse_package_metadata($) {
 			$package{$1} = $pkg;
 			push @{$srcpackage{$src}}, $pkg;
 		};
+		/^Feature:\s*(.+?)\s*$/ and do {
+			undef $pkg;
+			$feature = {};
+			$feature->{name} = $1;
+			$feature->{priority} = 0;
+		};
+		$feature and do {
+			/^Target-Name:\s*(.+?)\s*$/ and do {
+				$features{$1} or $features{$1} = [];
+				push @{$features{$1}}, $feature;
+			};
+			/^Target-Title:\s*(.+?)\s*$/ and $feature->{target_title} = $1;
+			/^Feature-Priority:\s*(\d+)\s*$/ and $feature->{priority} = $1;
+			/^Feature-Name:\s*(.+?)\s*$/ and $feature->{title} = $1;
+			/^Feature-Description:/ and $feature->{description} = get_multiline(\*FILE, "\t\t\t");
+			next;
+		};
+		next unless $pkg;
 		/^Version: \s*(.+)\s*$/ and $pkg->{version} = $1;
 		/^Title: \s*(.+)\s*$/ and $pkg->{title} = $1;
 		/^Menu: \s*(.+)\s*$/ and $pkg->{menu} = $1;