[PATCH 2/2] nntp: add "newsgroup" parameter and sort grouplist

[Eric Wong <e@80x24.org>]

Using non-hierarchical mailing list names for newsgroups
might confuse traditional newsreader software and perhaps
some humans.  Allow administrators to configure newsgroups
names and hierarchies to their liking.

Sorting the grouplist alphabetically should probably be
done anyways to improve usability for some clients which
won't sort themselves.
---
 lib/PublicInbox/NNTP.pm | 12 ++++++------
 public-inbox-nntpd      | 26 +++++++++++++++++++-------
 2 files changed, 25 insertions(+), 13 deletions(-)

diff --git a/lib/PublicInbox/NNTP.pm b/lib/PublicInbox/NNTP.pm
index 8f86685..79f2c2f 100644
--- a/lib/PublicInbox/NNTP.pm
+++ b/lib/PublicInbox/NNTP.pm
@@ -93,7 +93,7 @@ sub list_overview_fmt ($$) {
 sub list_active ($;$) {
 	my ($self, $wildmat) = @_;
 	wildmat2re($wildmat);
-	foreach my $ng (values %{$self->{nntpd}->{groups}}) {
+	foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
 		$ng->{name} =~ $wildmat or next;
 		group_line($self, $ng);
 	}
@@ -102,7 +102,7 @@ sub list_active ($;$) {
 sub list_active_times ($;$) {
 	my ($self, $wildmat) = @_;
 	wildmat2re($wildmat);
-	foreach my $ng (values %{$self->{nntpd}->{groups}}) {
+	foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
 		$ng->{name} =~ $wildmat or next;
 		my $c = eval { $ng->mm->created_at } || time;
 		more($self, "$ng->{name} $c $ng->{address}");
@@ -112,7 +112,7 @@ sub list_active_times ($;$) {
 sub list_newsgroups ($;$) {
 	my ($self, $wildmat) = @_;
 	wildmat2re($wildmat);
-	foreach my $ng (values %{$self->{nntpd}->{groups}}) {
+	foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
 		$ng->{name} =~ $wildmat or next;
 		my $d = $ng->description;
 		more($self, "$ng->{name} $d");
@@ -137,7 +137,7 @@ sub cmd_list ($;$$) {
 		$arg->($self, @args);
 	} else {
 		more($self, '215 list of newsgroups follows');
-		foreach my $ng (values %{$self->{nntpd}->{groups}}) {
+		foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
 			group_line($self, $ng);
 		}
 	}
@@ -200,7 +200,7 @@ sub cmd_newgroups ($$$;$$) {
 
 	# TODO dists
 	more($self, '231 list of new newsgroups follows');
-	foreach my $ng (values %{$self->{nntpd}->{groups}}) {
+	foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
 		my $c = eval { $ng->mm->created_at } || 0;
 		next unless $c > $ts;
 		group_line($self, $ng);
@@ -249,7 +249,7 @@ sub cmd_newnews ($$$$;$$) {
 	ngpat2re($keep);
 	ngpat2re($skip);
 	my @srch;
-	foreach my $ng (values %{$self->{nntpd}->{groups}}) {
+	foreach my $ng (@{$self->{nntpd}->{grouplist}}) {
 		$ng->{name} =~ $keep or next;
 		$ng->{name} =~ $skip and next;
 		my $srch = $ng->search or next;
diff --git a/public-inbox-nntpd b/public-inbox-nntpd
index b66de58..0395e98 100644
--- a/public-inbox-nntpd
+++ b/public-inbox-nntpd
@@ -298,7 +298,7 @@ sub event_read {
 package PublicInbox::NNTPD;
 use strict;
 use warnings;
-use fields qw(groups err out);
+use fields qw(groups grouplist err out);
 
 sub new {
 	my ($class) = @_;
@@ -306,6 +306,7 @@ sub new {
 	$self->{groups} = {};
 	$self->{err} = \*STDERR;
 	$self->{out} = \*STDOUT;
+	$self->{grouplist} = [];
 	$self;
 }
 
@@ -314,26 +315,37 @@ sub refresh_groups {
 	require PublicInbox::Config;
 	my $pi_config = PublicInbox::Config->new;
 	my $new = {};
+	my @list;
 	foreach my $k (keys %$pi_config) {
 		$k =~ /\Apublicinbox\.([^\.]+)\.mainrepo\z/ or next;
 		my $g = $1;
 		my $git_dir = $pi_config->{$k};
-		my $address = $pi_config->{"publicinbox.$g.address"};
-		my $ng = PublicInbox::NewsGroup->new($g, $git_dir, $address);
+		my $addr = $pi_config->{"publicinbox.$g.address"};
+		my $ngname = $pi_config->{"publicinbox.$g.newsgroup"};
+		if (defined $ngname) {
+			next if ($ngname eq ''); # disabled
+			$g = $ngname;
+		}
+		my $ng = PublicInbox::NewsGroup->new($g, $git_dir, $addr);
 		my $old_ng = $self->{groups}->{$g};
 
-		# Reuse the old one if possible since it can hold references
-		# to valid mm and gcf objects
+		# Reuse the old one if possible since it can hold
+		# references to valid mm and gcf objects
 		if ($old_ng) {
 			$old_ng->update($ng);
 			$ng = $old_ng;
 		}
 
 		# Only valid if Msgmap works
-		$new->{$g} = $ng if $ng->mm(1);
+		if ($ng->mm(1)) {
+			$new->{$g} = $ng;
+			push @list, $ng;
+		}
 	}
+	@list =	sort { $a->{name} cmp $b->{name} } @list;
+	$self->{grouplist} = \@list;
 	# this will destroy old groups that got deleted
 	%{$self->{groups}} = %$new;
-};
+}
 
 1;
-- 
EW