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.

diff --git a/lib/PublicInbox/SearchView.pm b/lib/PublicInbox/SearchView.pm
index 53b88c34d284f67194e53272b3a3bf2a1a95db3e..bf4415f011b8ea79603a1de8c4da348b312e9d08 100644 (file)
--- 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";
        }