######################################################################
#
# The Apache Software License, Version 1.1
# 
# Copyright (c) 1999-2000 The Apache Software Foundation.  All rights 
# reserved.
# 
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer. 
# 
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in
#    the documentation and/or other materials provided with the
#    distribution.
# 
# 3. The end-user documentation included with the redistribution,
#    if any, must include the following acknowledgment:  
#       "This product includes software developed by the
#        Apache Software Foundation (http://www.apache.org/)."
#    Alternately, this acknowledgment may appear in the software itself,
#    if and wherever such third-party acknowledgments normally appear.
# 
# 4. The names "Xerces" and "Apache Software Foundation" must
#    not be used to endorse or promote products derived from this
#    software without prior written permission. For written 
#    permission, please contact apache\@apache.org.
# 
# 5. Products derived from this software may not be called "Apache",
#    nor may "Apache" appear in their name, without prior written
#    permission of the Apache Software Foundation.
# 
# THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
# ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
# ====================================================================
# 
# This software consists of voluntary contributions made by many
# individuals on behalf of the Apache Software Foundation, and was
# originally based on software copyright (c) 1999, International
# Business Machines, Inc., http://www.ibm.com .  For more information
# on the Apache Software Foundation, please see
# <http://www.apache.org/>.
#
######################################################################
#
# DOMCount
#
# This sample is modeled after its XML4C counterpart.  You give it an
# XML file and it parses it into a DOM tree and counts the nodes.
#
######################################################################

use strict;
use XML::Xerces;
use Getopt::Long;
use Benchmark;
use vars qw(%OPTIONS);

#
# Read and validate command line args
#

my $USAGE = <<EOU;
USAGE: $0 [-v=xxx][-n] file
Options:
    -v=xxx      Validation scheme [always | never | auto*]
    -n          Enable namespace processing. Defaults to off.
    -s          Enable schema processing. Defaults to off.

  * = Default if not provided explicitly

EOU
my $VERSION = q[$Id: DOMCount.pl,v 1.12 2002/03/25 00:48:21 jasons Exp $ ];

my $rc = GetOptions(\%OPTIONS,
		    'v=s',
		    'n',
		    's');

die $USAGE unless $rc;

die $USAGE unless scalar @ARGV;

my $file = $ARGV[0];
-f $file or die "File '$file' does not exist!\n";

my $namespace = $OPTIONS{n} || 0;
my $schema = $OPTIONS{s} || 0;
my $validate = $OPTIONS{v} || 'auto';

if (uc($validate) eq 'ALWAYS') {
  $validate = $XML::Xerces::DOMParser::Val_Always;
} elsif (uc($validate) eq 'NEVER') {
  $validate = $XML::Xerces::DOMParser::Val_Never;
} elsif (uc($validate) eq 'AUTO') {
  $validate = $XML::Xerces::DOMParser::Val_Auto;
} else {
  die("Unknown value for -v: $validate\n$USAGE");
}


#
# Count the nodes
#

my $parser = XML::Xerces::DOMParser->new();
$parser->setValidationScheme ($validate);
$parser->setDoNamespaces ($namespace);
$parser->setCreateEntityReferenceNodes(1);
$parser->setDoSchema ($schema);

my $error_handler = XML::Xerces::PerlErrorHandler->new();
$parser->setErrorHandler($error_handler);

my $t0 = new Benchmark;
eval {
  $parser->parse ($file);
};
if ($@) {
  if (ref $@) {
    die $@->getMessage();
  } else {
    die $@;
  }
}
my $doc = $parser->getDocument ();
my $element_count = $doc->getElementsByTagName("*")->getLength();
my $t1 = new Benchmark;
my $td = timediff($t1, $t0);

print STDOUT "$file: duration: ", timestr($td), "\n";
print STDOUT "\t($element_count elems)\n";


__END__
