www: avoid `state' usage to perform allocations up-front

[public-inbox.git] / lib / PublicInbox / SolverGit.pm

diff --git a/lib/PublicInbox/SolverGit.pm b/lib/PublicInbox/SolverGit.pm
index 34669dbeeaf97f6c706c7734318b48334647fbbc..f881e16e41c89cfdd74515401ad2b164394dde22 100644 (file)
--- a/lib/PublicInbox/SolverGit.pm
+++ b/lib/PublicInbox/SolverGit.pm
@@ -34,6 +34,12 @@ my $OID_MIN = 7;
 # work fairly.  Other PSGI servers may have trouble, though.
 my $MAX_PATCH = 9999;
 
+my $LF = qr!\r?\n!;
+my $ANY = qr![^\r\n]+!;
+my $MODE = '100644|120000|100755';
+my $FN = qr!(?:("?[^/\n]+/[^\r\n]+)|/dev/null)!;
+my %BAD_COMPONENT = ('' => 1, '.' => 1, '..' => 1);
+
 # di = diff info / a hashref with information about a diff ($di):
 # {
 #      oid_a => abbreviated pre-image oid,
@@ -110,10 +116,6 @@ sub extract_diff ($$) {
                $s =~ s/\r\n/\n/sg;
        }
 
-       state $LF = qr!\r?\n!;
-       state $ANY = qr![^\r\n]+!;
-       state $MODE = '100644|120000|100755';
-       state $FN = qr!(?:("?[^/\n]+/[^\r\n]+)|/dev/null)!;
 
        $s =~ m!( # $1 start header lines we save for debugging:
 
@@ -174,8 +176,7 @@ sub extract_diff ($$) {
 
        # get rid of path-traversal attempts and junk patches:
        # it's junk at best, an attack attempt at worse:
-       state $bad_component = { map { $_ => 1 } ('', '.', '..') };
-       foreach (@a, @b) { return if $bad_component->{$_} }
+       foreach (@a, @b) { return if $BAD_COMPONENT{$_} }
 
        $di->{path_a} = join('/', @a) if @a;
        $di->{path_b} = join('/', @b);