lei_store: simplify git_epoch_max, slightly

This follows how we detect the max epoch for v2 and shard count
in Xapian.

1 files changed, 7 insertions, 8 deletions

diff --git a/lib/PublicInbox/LeiStore.pm b/lib/PublicInbox/LeiStore.pm
index b5b49efb..d3667d29 100644
--- a/lib/PublicInbox/LeiStore.pm
+++ b/lib/PublicInbox/LeiStore.pm
@@ -18,6 +18,7 @@ use PublicInbox::V2Writable;
 use PublicInbox::ContentHash qw(content_hash);
 use PublicInbox::MID qw(mids);
 use PublicInbox::LeiSearch;
+use List::Util qw(max);
 
 sub new {
         my (undef, $dir, $opt) = @_;
@@ -42,15 +43,13 @@ sub git_pfx { "$_[0]->{priv_eidx}->{topdir}/local" };
 
 sub git_epoch_max  {
         my ($self) = @_;
-        my $pfx = $self->git_pfx;
-        my $max = 0;
-        return $max unless -d $pfx ;
-        opendir my $dh, $pfx or die "opendir $pfx: $!\n";
-        while (defined(my $git_dir = readdir($dh))) {
-                $git_dir =~ m!\A([0-9]+)\.git\z! or next;
-                $max = $1 + 0 if $1 > $max;
+        if (opendir(my $dh, $self->git_pfx)) {
+                max(map {
+                        substr($_, 0, -4) + 0; # drop ".git" suffix
+                } grep(/\A[0-9]+\.git\z/, readdir($dh))) // 0;
+        } else {
+                $!{ENOENT} ? 0 : die("opendir ${\$self->git_pfx}: $!\n");
         }
-        $max;
 }
 
 sub importer {