introduced header_property in info output -- Daniel.Pocock barclayscapital.com

[rrdtool.git] / bindings / perl-piped / RRDp.pm

diff --git a/bindings/perl-piped/RRDp.pm b/bindings/perl-piped/RRDp.pm
index 9f57774..c3fbf91 100644 (file)
--- a/bindings/perl-piped/RRDp.pm
+++ b/bindings/perl-piped/RRDp.pm
@@ -45,6 +45,9 @@ start RRDtool. The argument must be the path to the RRDtool executable
 pass commands on to RRDtool. check the RRDtool documentation for
 more info on the RRDtool commands.
 
 pass commands on to RRDtool. check the RRDtool documentation for
 more info on the RRDtool commands.
 

+B<Note>: Due to design limitations, B<RRDp::cmd> does not support the
+C<graph -> command - use C<graphv -> instead.
+

 =item $answer = B<RRDp::read>
 
 read RRDtool's response to your command. Note that the $answer variable will
 =item $answer = B<RRDp::read>
 
 read RRDtool's response to your command. Note that the $answer variable will


@@ -121,7 +124,7 @@ sub cmd (@);
 sub end ();
 sub read ();
 
 sub end ();
 sub read ();
 

-$VERSION=1.3001;
+$VERSION=1.3002;

 
 sub start ($){
   croak "rrdtool is already running"
 
 sub start ($){
   croak "rrdtool is already running"


@@ -187,6 +190,13 @@ sub cmd (@){
   }
   $cmd =~ s/\n/ /gs;
   $cmd =~ s/\s/ /gs;
   }
   $cmd =~ s/\n/ /gs;
   $cmd =~ s/\s/ /gs;

+
+  # The generated graphs aren't necessarily terminated by a newline,
+  # causing RRDp::read() to wait for a line matching '^OK' forever.
+  if ($cmd =~ m/^\s*graph\s+-\s+/) {
+    croak "RRDp does not support the 'graph -' command - "
+        . "use 'graphv -' instead";
+  }

   print RRDwriteHand "$cmd\n";
 }
 
   print RRDwriteHand "$cmd\n";
 }