scripts/feeds: add src-include method

The src-include method allows recursive inclusion of feeds.conf snippets.

This can for example be used for adding static local feeds to
feeds.conf.default without ever having to update the local feeds.conf:

 src-include defaults feeds.conf.default
 src-link custom /usr/local/src/lede/custom

Signed-off-by: Bjørn Mork <bjorn@mork.no>
(cherry picked from commit 7a1b575ac4ede2778bb21cfafa7a1152d9d2555f)

diff --git a/scripts/feeds b/scripts/feeds
index 304ef6cbafd141ff98d6a8afe5de5b371a4cb2a7..a4dfd9e260a8fe713405b288cd4d596dc775ea1f 100755 (executable)
--- a/scripts/feeds
+++ b/scripts/feeds
@@ -41,34 +41,49 @@ my $feed_src = {};
 my $feed_target = {};
 my $feed_vpackage = {};
 
-sub parse_config() {
+sub parse_file($$);
+
+sub parse_file($$) {
+       my ($fname, $name) = @_;
        my $line = 0;
-       my %name;
+       my $fh;
 
-       open FEEDS, "feeds.conf" or
-               open FEEDS, "feeds.conf.default" or
-               die "Unable to open feeds configuration";
-       while (<FEEDS>) {
+       open $fh, $fname or return undef;
+       while (<$fh>) {
                chomp;
                s/#.+$//;
+               $line++;
                next unless /\S/;
                my @line = split /\s+/, $_, 3;
                my @src;
-               $line++;
 
                my $valid = 1;
                $line[0] =~ /^src-[\w-]+$/ or $valid = 0;
                $line[1] =~ /^\w+$/ or $valid = 0;
                @src = split /\s+/, ($line[2] or '');
                @src = ('') if @src == 0;
-               $valid or die "Syntax error in feeds.conf, line: $line\n";
+               $valid or die "Syntax error in $fname, line: $line\n";
 
-               $name{$line[1]} and die "Duplicate feed name '$line[1]', line: $line\n";
-               $name{$line[1]} = 1;
+               $name->{$line[1]} and die "Duplicate feed name '$line[1]' in '$fname' line: $line\n";
+               $name->{$line[1]} = 1;
+
+               if ($line[0] eq "src-include") {
+                       parse_file($line[2], $name) or
+                           die "Unable to open included file '$line[2]'";
+                       next;
+               }
 
                push @feeds, [$line[0], $line[1], \@src];
        }
-       close FEEDS;
+       close $fh;
+       return 1;
+}
+
+sub parse_config() {
+       my %name;
+       parse_file("feeds.conf", \%name) or
+           parse_file("feeds.conf.default", \%name)  or
+           die "Unable to open feeds configuration";
 }
 
 sub update_location($$)