* Subtitle::SSA : minor optimizations

lib/Subtitle/SSA.pm

@@ -36,7 +36,7 @@ sub new_event { ... }
 sub parse {
   my ($self, $lines) = @_;
   my $linenum = 0;
-  my $section;
+  my ($section, $font);
 
   foreach my $line (@$lines) {
     $linenum++;
@@ -46,7 +46,7 @@ sub parse {
     study $line;
 
     # check section switch
-    if ($line =~ m/^\s*\[\s*([a-z0-9+ ]+)\s*\]\s*$/io) {
+    if (index($line, '[') >= 0 and $line =~ m/^\[([a-zA-Z0-9+ ]+)\]\s*$/o) {
       my $name = lc($1);
       if ($name =~ m{script \s+ info}oix) {
         $section = 'header';
@@ -67,25 +67,25 @@ sub parse {
       $self->log(debug => "section changed to [$section] at line $linenum");
       next;
     }
-    #
-    unless ($section) {
-      $self->log(warn => "Line $linenum outside any section, skip");
-      next;
-    }
+    # parse fonts data
     if ($section eq 'fonts') {
-      if ($line =~ m/^fontname:\s*(.*)/i) {
-        my $font = Subtitle::SSA::File->new;
+      if (index($line, 'fontname:') == 0) {
+        $line =~ m/^fontname:\s*(.*)/o;
+        $font = Subtitle::SSA::File->new;
         $font->type('font');
         $font->name($1);
         push @{ $self->{fonts} }, $font;
         next;
-      }
-      my $curr = $self->{fonts}->[-1]
-        or next; # missing 'fontname' line?
-      $curr->add_uue_line($line);
+      } elsif ($font) {
+        $font->add_uue_line($line);
+      } # else: missing 'fontname' line, skip
       next;
     }
     # TODO: graphics section
+    unless ($section) {
+      $self->log(warn => "Line $linenum outside any section, skip");
+      next;
+    }
     # skip comments
     next if $line =~ m{^ \s* ;}xo;
     if ($section eq 'header') {