X-Git-Url: http://www.git.stargrave.org/?a=blobdiff_plain;f=lib%2FPublicInbox%2FHval.pm;h=fb21041acafcaa534c3563a1f191f902acc631df;hb=0d38f65c490466837ae091afa7a7b6f59d04ce7c;hp=46a839160c3f996e25eb4e0b91b4a1a82fdfabef;hpb=4da62f284003d75abe7cb35594414eb2224f42bc;p=public-inbox.git

diff --git a/lib/PublicInbox/Hval.pm b/lib/PublicInbox/Hval.pm
index 46a83916..fb21041a 100644
--- a/lib/PublicInbox/Hval.pm
+++ b/lib/PublicInbox/Hval.pm
@@ -10,7 +10,8 @@ use Encode qw(find_encoding);
 use PublicInbox::MID qw/mid_clean mid_escape/;
 use base qw/Exporter/;
 our @EXPORT_OK = qw/ascii_html obfuscate_addrs to_filename src_escape
-		to_attr prurl mid_href/;
+		to_attr prurl mid_href fmt_ts ts2str/;
+use POSIX qw(strftime);
 my $enc_ascii = find_encoding('us-ascii');
 
 # safe-ish acceptable filename pattern for portability
@@ -94,12 +95,12 @@ sub obfuscate_addrs ($$;$) {
 
 # like format_sanitized_subject in git.git pretty.c with '%f' format string
 sub to_filename ($) {
-	my ($s, undef) = split(/\n/, $_[0]);
+	my $s = (split(/\n/, $_[0]))[0] // return; # empty string => undef
 	$s =~ s/[^A-Za-z0-9_\.]+/-/g;
 	$s =~ tr/././s;
 	$s =~ s/[\.\-]+\z//;
 	$s =~ s/\A[\.\-]+//;
-	$s
+	$s eq '' ? undef : $s;
 }
 
 # convert a filename (or any string) to HTML attribute
@@ -123,4 +124,10 @@ sub to_attr ($) {
 	$first . $str;
 }
 
+# for the t= query parameter passed to overview DB
+sub ts2str ($) { strftime('%Y%m%d%H%M%S', gmtime($_[0])) };
+
+# human-friendly format
+sub fmt_ts ($) { strftime('%Y-%m-%d %k:%M', gmtime($_[0])) }
+
 1;