--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/deprecated/buildtools/buildsystemtools/lib/XML/Handler/PrintEvents.pm	Mon Oct 18 16:16:46 2010 +0800
@@ -0,0 +1,67 @@
+#
+# This PerlSAX handler prints out all the PerlSAX events/callbacks
+# it receives. Very useful when debugging.
+#
+
+package XML::Handler::PrintEvents;
+use strict;
+use XML::Filter::SAXT;
+
+my @EXTRA_HANDLERS = ( 'ignorable_whitespace' );
+
+sub new
+{
+    my ($class, %options) = @_;
+    bless \%options, $class;
+}
+
+sub print_event
+{
+    my ($self, $event_name, $event) = @_;
+
+    printf "%-22s ", $event_name;
+    if (defined $event)
+    {
+	print join (", ", map { "$_ => [" . 
+				(defined $event->{$_} ? $event->{$_} : "(undef)") 
+				. "]" } keys %$event);
+    }
+    print "\n";
+}
+
+#
+# This generates the PerlSAX handler methods for PrintEvents.
+# They basically forward the event to print_event() while adding the callback
+# (event) name.
+#
+for my $cb (@EXTRA_HANDLERS, map { @{$_} } values %XML::Filter::SAXT::SAX_HANDLERS)
+{
+    eval "sub $cb { shift->print_event ('$cb', \@_) }";
+}
+
+1;	# package return code
+
+__END__
+
+=head1 NAME
+
+XML::Handler::PrintEvents - Prints PerlSAX events (for debugging)
+
+=head1 SYNOPSIS
+
+use XML::Handler::PrintEvents;
+
+my $pr = new XML::Handler::PrintEvents;
+
+=head1 DESCRIPTION
+
+This PerlSAX handler prints the PerlSAX events it receives to STDOUT.
+It can be useful when debugging PerlSAX filters.
+It supports all PerlSAX handler including ignorable_whitespace.
+
+=head1 AUTHOR
+
+Send bug reports, hints, tips, suggestions to Enno Derksen at
+<F<enno@att.com>>. 
+
+=cut