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# All credit to https://github.com/hakanensari
# Taken from https://gist.github.com/hakanensari/3078932
require 'benchmark'
require 'stringio'
require 'nokogiri'
require 'ox'
io = StringIO.new %{
<?xml version="1.0" encoding="UTF-8"?>
<ItemLookupResponse>
<Items>
<Item>
<ASIN>0816614024</ASIN>
<ItemAttributes>
<Creator Role="Author">Gilles Deleuze</Creator>
<Creator Role="Contributor">Felix Guattari</Creator>
<Title>Thousand Plateaus</Title>
</ItemAttributes>
</Item>
<Item>
<ASIN>0231081596</ASIN>
<ItemAttributes>
<Creator Role="Author">Gilles Deleuze</Creator>
<Title>Difference and Repetition</Title>
</ItemAttributes>
</Item>
</Items>
</ItemLookupResponse>
}.strip.gsub(/>\s+</, '><')
class OxHandler < Ox::Sax
attr_reader :root
def initialize
super
@stack = [@node = @root = {}]
end
def attr(key, val)
@node[key] = val
end
def end_element(key)
child = @stack.pop
@node = @stack.last
case @node[key]
when Array
@node[key] << child
when Hash
@node[key] = [@node[key], child]
else
if child.keys == [:__content__]
@node[key] = child[:__content__]
else
@node[key] = child
end
end
end
def start_element(key)
@stack << @node = {}
end
def text(val)
@node[:__content__] = val
end
end
class NokogiriHandler < Nokogiri::XML::SAX::Document
attr_reader :root
def characters(val)
(@node['__content__'] ||= '') << val
end
def end_element(key)
child = @stack.pop
@node = @stack.last
case @node[key]
when Array
@node[key] << child
when Hash
@node[key] = [@node[key], child]
else
if child.keys == ['__content__']
@node[key] = child['__content__']
else
@node[key] = child
end
end
end
def start_element(key, attrs = [])
@stack << @node = {}
attrs.each do |attr|
key, val = *attr
@node[key] = val
end
end
def start_document
@stack = [@root = {}]
end
end
n = 10_000
Benchmark.bmbm do |b|
b.report('ox') do
n.times do
io.rewind
handler = OxHandler.new
Ox.sax_parse handler, io
end
end
b.report('nokogiri') do
n.times do
io.rewind
handler = NokogiriHandler.new
parser = Nokogiri::XML::SAX::Parser.new handler
parser.parse io
end
end
end
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