Allow specification of the number of search results to return

Add an "l=" parameter to the search query syntax to specify how many
results should be returned.

1 files changed, 13 insertions, 4 deletions

diff --git a/lib/PublicInbox/SearchView.pm b/lib/PublicInbox/SearchView.pm
index 53b88c34..bf4415f0 100644
--- a/lib/PublicInbox/SearchView.pm
+++ b/lib/PublicInbox/SearchView.pm
@@ -35,7 +35,7 @@ sub sres_top_html {
         my $code = 200;
         # double the limit for expanded views:
         my $opts = {
-                limit => $LIM,
+                limit => $q->{l},
                 offset => $q->{o},
                 mset => 1,
                 relevance => $q->{r},
@@ -182,6 +182,7 @@ sub search_nav_bot {
         my $total = $mset->get_matches_estimated;
         my $nr = scalar $mset->items;
         my $o = $q->{o};
+        my $l = $q->{l};
         my $end = $o + $nr;
         my $beg = $o + 1;
         my $rv = '</pre><hr><pre id=t>';
@@ -191,15 +192,15 @@ sub search_nav_bot {
         } else {
                 $rv .= "No more results, only $total";
         }
-        my $n = $o + $LIM;
+        my $n = $o + $l;
 
         if ($n < $total) {
-                my $qs = $q->qs_html(o => $n);
+                my $qs = $q->qs_html(o => $n, l => $l);
                 $rv .= qq{  <a\nhref="?$qs"\nrel=next>next</a>}
         }
         if ($o > 0) {
                 $rv .= $n < $total ? '/' : '       ';
-                my $p = $o - $LIM;
+                my $p = $o - $l;
                 my $qs = $q->qs_html(o => ($p > 0 ? $p : 0));
                 $rv .= qq{<a\nhref="?$qs"\nrel=prev>prev</a>};
         }
@@ -308,10 +309,15 @@ sub new {
         my ($class, $qp) = @_;
 
         my $r = $qp->{r};
+        my $l = $qp->{l} || '200';
+        if (! ($l =~ /(\d+)/ && $l <= $LIM)) {
+                $l = $LIM;
+        }
         bless {
                 q => $qp->{'q'},
                 x => $qp->{x} || '',
                 o => (($qp->{o} || '0') =~ /(\d+)/),
+                l => $l,
                 r => (defined $r && $r ne '0'),
         }, $class;
 }
@@ -334,6 +340,9 @@ sub qs_html {
         if (my $o = $self->{o}) { # ignore o == 0
                 $qs .= "&amp;o=$o";
         }
+        if (my $l = $self->{l}) {
+                $qs .= "&amp;l=$l";
+        }
         if (my $r = $self->{r}) {
                 $qs .= "&amp;r";
         }