nntp: simplify the long_response API

We we worked around the default range/termination conditions of
long_response in many cases to reduce calls to SQLite or Xapian.
So continue that trend and become more like the PSGI API
which doesn't force callers to specify an article range or
work inside a loop.

1 files changed, 12 insertions, 0 deletions

diff --git a/lib/PublicInbox/Msgmap.pm b/lib/PublicInbox/Msgmap.pm
index 26565d45..c6a73155 100644
--- a/lib/PublicInbox/Msgmap.pm
+++ b/lib/PublicInbox/Msgmap.pm
@@ -196,6 +196,18 @@ ORDER BY num ASC LIMIT 1000
         $ids;
 }
 
+sub msg_range {
+        my ($self, $beg, $end) = @_;
+        my $dbh = $self->{dbh};
+        my $attr = { Columns => [] };
+        my $mids = $dbh->selectall_arrayref(<<'', $attr, $$beg, $end);
+SELECT num,mid FROM msgmap WHERE num >= ? AND num <= ?
+ORDER BY num ASC
+
+        $$beg = $mids->[-1]->[0] + 1 if @$mids;
+        $mids
+}
+
 # only used for mapping external serial numbers (e.g. articles from gmane)
 # see scripts/xhdr-num2mid or PublicInbox::Filter::RubyLang for usage
 sub mid_set {