2 files changed, 20 insertions, 7 deletions

diff --git a/lib/Nagios/Plugin/Functions.pm b/lib/Nagios/Plugin/Functions.pm
index 74a7c6b..ffa23f0 100644
--- a/lib/Nagios/Plugin/Functions.pm
+++ b/lib/Nagios/Plugin/Functions.pm
@@ -12,7 +12,7 @@ use Params::Validate qw(:types validate);
 use Math::Calc::Units;
 
 # Remember to update Nagios::Plugins as well
-our $VERSION = "0.28";
+our $VERSION = "0.29";
 
 our @STATUS_CODES = qw(OK WARNING CRITICAL UNKNOWN DEPENDENT);
 
diff --git a/lib/Nagios/Plugin/Performance.pm b/lib/Nagios/Plugin/Performance.pm
index a7655fc..a9f9198 100644
--- a/lib/Nagios/Plugin/Performance.pm
+++ b/lib/Nagios/Plugin/Performance.pm
@@ -70,18 +70,22 @@ sub parse_perfstring {
 
 sub rrdlabel {
         my $self = shift;
+        my $name = $self->clean_label;
+        # Shorten
+        return substr( $name, 0, 19 );
+}
+
+sub clean_label {
+        my $self = shift;
         my $name = $self->label;
         if ($name eq "/") {
                 $name = "root";
-    }
-        # If filesystem name, remove initial / and convert subsequent "/" to "_"
-        elsif ($name =~ s/^\///) {
+        } elsif ( $name =~ s/^\/// ) {
                 $name =~ s/\//_/g;
         }
-        # Convert bad chars
+        # Convert all other characters
         $name =~ s/\W/_/g;
-        # Shorten
-        return substr( $name, 0, 19 );
+        return $name;
 }
 
 # Backward compatibility: create a threshold object on the fly as requested
@@ -212,9 +216,18 @@ Returns a string based on 'label' that is suitable for use as dataset name of
 an RRD i.e. munges label to be 1-19 characters long with only characters 
 [a-zA-Z0-9_].
 
+This calls $self->clean_label and then truncates to 19 characters.
+
 There is no guarantee that multiple N:P:Performance objects will have unique 
 rrdlabels.
 
+=item clean_label
+
+Returns a "clean" label for use as a dataset name in RRD, ie, it converts
+characters that are not [a-zA-Z0-9_] to _.
+
+It also converts "/" to "root" and "/{name}" to "{name}".
+
 =item perfoutput
 
 Outputs the data in Nagios::Plugin perfdata format i.e.