Class: XMLRowFinder

Inherits:
Object
  • Object
show all
Defined in:
lib/xml_row_finder.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(raws, debug: false) ⇒ XMLRowFinder

Returns a new instance of XMLRowFinder.



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# File 'lib/xml_row_finder.rb', line 12

def initialize(raws, debug: false)

  @debug = debug

  doc = Nokorexi.new(raws, filter: true).to_doc

  @doc = Rexle.new(doc.root.xml)

  a = []

  doc.root.each_recursive do |e|
    e.attributes.delete
    a << e.backtrack.to_xpath
  end

  @to_a = a2 = a.map {|e| [a.count(e), e] }.uniq
  xpath = a2.max_by(&:first).last

  a3 = xpath.split('/')
  a4 = [xpath]
  p1 = []

  until (a3.length < 1) do
    p1 << a3.pop; a4 << a3.join('/') + "[%s]" % p1.reverse.join('/')
  end

  # using Nokogiri since Rexle has a bug with xpath predicates
  #
  @doc2 = Nokogiri::XML(doc.root.xml)

  a5 = a4[0..-2].map do |xpath2|
    [@doc2.xpath(xpath2).length, xpath2]
  end

  puts 'a5: ' + a5.inspect if @debug
  rows_xpath = a5.reverse.detect {|num, xpath2| num > 1}.last
  doc3 = Document.new @doc.root.xml
  @rows = XPath.match(doc3, rows_xpath)
  @xpath = rows_xpath
  #@xpath = BacktrackXPath.new(@rows.first).to_xpath.gsub("[@class='']",'')

  last_row = XPath.match(doc3, @xpath).last
  puts '@xpath: ' + @xpath.inspect

  # find the container element
  xpath = @xpath[/^[^\[]+/]
  axpath = xpath.split('/')

  e = XPath.first(doc3, xpath)
  puts 'e: ' + e.to_s

  until (e.nil? or e.to_s.include?(last_row.to_s)) do
    axpath.pop
    e = XPath.first(doc3, axpath.join('/'))
  end

  @cont_xpath = axpath.join('/')

end

Instance Attribute Details

#to_a ⇒ Object (readonly)

Returns the value of attribute to_a.



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# File 'lib/xml_row_finder.rb', line 10

def to_a
  @to_a
end

Instance Method Details

#body ⇒ Object

returns the container element for all rows



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# File 'lib/xml_row_finder.rb', line 74

def body()
  Rexle.new(@doc.element(@cont_xpath).xml)
end

#body_xpath ⇒ Object

returns the xpath pointing to the container element for all rows



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# File 'lib/xml_row_finder.rb', line 80

def body_xpath()
  @cont_xpath
end

#rows ⇒ Object

returns rows object returned: An array of Nokogiri XML Element object



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# File 'lib/xml_row_finder.rb', line 87

def rows()
  @rows
end

#to_xpath ⇒ Object Also known as: rows_xpath

returns the xpath pointing to the rows



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# File 'lib/xml_row_finder.rb', line 93

def to_xpath()
  @xpath
end