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#!/usr/bin/env ruby
# This example demonstrates the use of the Ox.sax_parse method. An XML string
# is parsed and a list of element names if built.
# Use the current repo if run from the examples directory.
ox_dir = File.dirname(File.dirname(File.expand_path(__FILE__)))
$LOAD_PATH << File.join(ox_dir, 'ext')
$LOAD_PATH << File.join(ox_dir, 'lib')
require 'ox'
# First create a handler for the SAX callbacks. A Hash is used to collect the
# element names. This is a quick way to make sure the collected names are
# unique. Only the start_element is implemented as that is all that is needed
# to collect names. There is no need to inherit from Ox::Sax but tht class
# includes the private version of all the methods that can be made publis.
class Saxy
def initialize
# super
@names = {}
end
def names
@names.keys
end
def start_element(name)
@names[name] = nil
end
end
# The XML can be a string or a IO instance.
xml = %{
<?xml version="1.0"?>
<Park.Animal>
<type>mutant</type>
<friends type="Hash">
<i>5</i>
<Park.Animal>
<type>dog</type>
</Park.Animal>
</friends>
</Park.Animal>
}
# Create an instance of the handler.
handler = Saxy.new
Ox.sax_html(handler, xml)
puts "element names: #{handler.names}"
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