fix spurious line from previous year in sh/ann

[spider.git] / perl / RingBuf.pm

diff --git a/perl/RingBuf.pm b/perl/RingBuf.pm
index e9b1052a92f8e42566b02b91aa608c6cd69c7116..b55c19aae908c7a74c5fdea3339bfac97557f7a2 100644 (file)
--- a/perl/RingBuf.pm
+++ b/perl/RingBuf.pm
@@ -28,7 +28,7 @@ sub new
        # 3 - start
        # 4 - pos
        # 5 - buffer []
-       return bless [$size, 0, 0, 0, 0, []], (ref $pkg || $pkg);
+       return bless [$size+1, 0, 0, 0, 0, []], (ref $pkg || $pkg);
 }
 
 sub write
@@ -37,10 +37,7 @@ sub write
 
        $self->[5]->[$self->[2]++] = shift;
        $self->[2] = 0 if $self->[2] >= $self->[0];
-       if ($self->[1] < $self->[0]) {
-               $self->[1] = ++$self->[1];
-       }
-       $self->[2] = $self->[2];
+       $self->[1]++ if $self->[1] < $self->[0];
        if ($self->[1] == $self->[0] && $self->[2] == $self->[3]) {
                $self->[3] = $self->[2]+1;
                $self->[3] = 0 if $self->[3] >= $self->[0];