XML::Handler::PrintEvents - Prints PerlSAX events (for debugging)

XML-Handler-PrintEvents documentation Contained in the XML-Handler-PrintEvents distribution.

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NAME

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XML::Handler::PrintEvents - Prints PerlSAX events (for debugging)

SYNOPSIS

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use XML::Handler::PrintEvents;

my $pr = new XML::Handler::PrintEvents;

DESCRIPTION

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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.

AUTHOR

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Enno Derksen is the original author.

Send bug reports, hints, tips, suggestions to T.J. Mather at <tjmather@tjmather.com>.

XML-Handler-PrintEvents documentation Contained in the XML-Handler-PrintEvents distribution. 
#
# 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;

use vars qw($VERSION);
$VERSION = 0.01;

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__